STEVAL-ILL029V2 STMicroelectronics, STEVAL-ILL029V2 Datasheet
STEVAL-ILL029V2
Specifications of STEVAL-ILL029V2
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STEVAL-ILL029V2 Summary of contents
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Features ■ capacitive sensor inputs ■ Independent and configurable automatic calibration on all channels ■ resolution, 512 steps with 30 pF auto- tuning ■ external reference capacitor ■ 2 units of ...
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Contents Contents 1 Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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STMPE16M31, STMPE24M31 13.3 Auto-tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Pin assignment 1 Pin assignment Figure 1. STMPE24M31 pin out 4/85 Doc ID 16174 Rev 3 STMPE16M31, STMPE24M31 ...
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STMPE16M31, STMPE24M31 Figure 2. STMPE16M31 pin out Table 2. STMPE16M31 and STMPE24M31 pin description STMPE24M31 STMPE16M31 pin number Pin name Voltage domain pin number 1 GPIO-0 ...
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Pin assignment Table 2. STMPE16M31 and STMPE24M31 pin description (continued) STMPE24M31 STMPE16M31 Pin number ...
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STMPE16M31, STMPE24M31 Figure 3. Block diagram Doc ID 16174 Rev 3 Pin assignment 7/85 ...
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Pin assignment Figure 4. Sample application - notebook multimedia bar Table 3. Limitations on intrinsic capacitance on PCB / flexi PCB Cmax-Cmin (Difference between highest and lowest channel capacitance) < < > 30 pF, < 60 ...
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STMPE16M31, STMPE24M31 1.1 Power scheme The STMPE24M31/16M31 is powered by a 2.7- 5.5 V supply. An internal voltage regulator regulates this supply into 1.8 V for core operation recommended to connect a 1 µF capacitor ...
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Pin assignment Figure 6. Power states Host command HIBERNATE 1. STMPExxM31 remains in active mode when PWM is running. Table 4. Functions available in each power state GPIO hotkey PWM Capacitive sensing Ratio engine 1. When the ...
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STMPE16M31, STMPE24M31 interface module The STMPE24M31/16M31 has 2 physical I settings. 2 Table address pins Address The features that are supported by the I 2 – ...
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I C interface module Acknowledge bit (ACK) The acknowledge bit is used to indicate a successful byte transfer. The bus transmitter releases the SDA after sending eight bits of data. During the ninth bit, the receiver pulls the SDA ...
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STMPE16M31, STMPE24M31 Figure 7. Read and write modes (random and sequential ...
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I C interface module Figure 8. Flow diagram for read and write modes 14/85 Doc ID 16174 Rev 3 STMPE16M31, STMPE24M31 ...
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STMPE16M31, STMPE24M31 3 Read operations Read operations for one or more bytes A write is first performed to load the base register address into the address counter but without sending a Stop condition. Then, the bus master sends a reStart ...
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Write operations 4 Write operations 4.1 Write operations for one or more bytes A write is first performed to load the base register address into the Address Counter without sending a Stop condition. After the bus master receives an acknowledgement ...
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STMPE16M31, STMPE24M31 5 General call address A general call address is a transaction with the slave address of 0x00 and R When a general call address is made, the GPIO expander responds to this transaction with an acknowledgement ...
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Register map and function description 6 Register map and function description This section lists and describes the registers of the STMPE16M31 and STMPE24M31 devices, starting with a register map and then provides detailed descriptions of register types. Table 8. Register ...
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STMPE16M31, STMPE24M31 Table 8. Register map (continued) Address 0x27 0x28 0x29 0x2A 0x2B 0x2C 0x2D 0x2E 0x2F 0x30 0x40 0x41 0x42 0x43 0x44 0x45 0x46 0x47 0x48 0x49 0x4A 0x4B 0x4C 0x4D 0x4E 0x4F 0x50 0x51 0x52 Register name Reset ...
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Register map and function description Table 8. Register map (continued) Address 0x53 0x54 0x55 0x56 0x57 0x58 0x59 0x5A 0x5B 0x5C 0x5D 0x5E 0x5F 0x70 0x71 0x72 0x76 0x77 0x78 0x7C 0x80 0x81 0x82 0x83 0x84 0x87 0x90 20/85 Register ...
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STMPE16M31, STMPE24M31 Table 8. Register map (continued) Address 0x92 0x96 0x9A 0xB4 0xC0 0xC2 0xC4 0xC6 0xC8 0xCA 0xCC 0xCE 0xD0 0xD2 0xD4 0xD6 0xD8 0xDA 0xDC 0xDE 0xE0 0xE2 0xE4 0xE6 0xE8 0xEA 0xEC 0xEE Register name Reset value ...
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System controller 7 System controller The system controller contains the registers that control the following functions: – Device identification – Version identification – Power state management – Clock speed management – Clock gating to various modules Table 9. System controller ...
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STMPE16M31, STMPE24M31 SYSCON-1 Address: 0x03 Type: R/W Reset: 0x00 Description: The general system control register (SYSCON-1) controls the operation state and clock speed of the device RESERVED RESERVED RESERVED [7:5] RESERVED: Do not write ...
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System controller SYSCON-2 Address: 0x04 Type: R/W Reset: 0xFE Description: Sensor and PWM clock divider. The SYSCON-2 register controls the sensor and PWM clock speed, and the clock gating of various functional modules. This bit will always read '0'. as ...
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STMPE16M31, STMPE24M31 7.1 Interrupt system This module controls the interruption to the host based on the activity of other modules in the system, such as the capacitive sensing, GPIO and PWM modules. Figure 9. Interrupt system Table 10. Interrupt system ...
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System controller INT_CTRL Address: 0x06 Type: R/W Reset: 0x00 Description: INT_CTRL controls the interrupt signal generation RESERVED [7:3] RESERVED [2] INT_POL: Interrupt polarity 0: Active low 1: Active high [1] INT_TYPE: Interrupt trigger type ...
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STMPE16M31, STMPE24M31 INT_STA Address: 0x08 Type: R/W Reset: 0x00 Description: This register holds interrupt status from each event GPIO PWM WAKEUP [7] GPIO: Activity in GPIO Read ‘1’ if GPIO event occurs Write ‘1’ ...
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System controller INT_EN Address: 0x09 Type: R/W Reset: 0x00 Description: Controls interrupt source enable GPIO PWM WAKEUP [7] GPIO: Activity in GPIO Write ‘1’ to enable interrupt signal from GPIO Write ‘0’ to disable ...
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STMPE16M31, STMPE24M31 GPIO_INT_STA Address: 0x0A – 0x0B Type: R/W Reset: 0x0000 Description: This register reflects the status of GPIO that has been configured as input. When there is a change in GPIO state, the corresponding bit will be set to ...
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System controller GPIO_INT_EN Address: 0x0C – 0x0D Type: R/W Reset: 0x0000 Description: This register is used to enable the generation of interrupt signal, at the INT pin. LSB (0x0C IO-7 IO MSB (0x0D) 7 ...
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STMPE16M31, STMPE24M31 PWM_INT_EN Address: 0x0F Type: R/W Reset: 0x00 Description: Writing ‘1’ to this register enables the generation of INT by the corresponding PWM channel PWM-7 PWM [7:0] PWM - X Enable of PWM ...
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Interrupt service routine 8 Interrupt service routine On receiving an interrupt, system software should: Read InterruptStatus If (GPIO.bit==1) { Read InterruptStatusGPIO Process GPIO INT Write InterruptStatusGPIO to clear the corresponding bit Write InterruptStatus to clear the corresponding bit } If ...
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STMPE16M31, STMPE24M31 9 GPIO controller A total of 16 GPIOs are available in the STMPE24M31/STMPE16M31. Most of the GPIOs are sharing physical pins with some alternate functions. The GPIO controller contains the registers that allow the host system to configure ...
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GPIO controller GPIO_MP_STA Address: 0x12 – 0x13 Type: R Reset: 0x00 Description: Contains the state of all GPIO. LSB (0x12 IO-7 IO MSB (0x13 IO-15 IO- [7:0] IO ...
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STMPE16M31, STMPE24M31 GPIO_SET_PIN Address: 0x14 – 0x15 Type: RW Reset: 0x00 Description: Setting of the I/O output state. LSB (0x14 IO-7 IO MSB (0x15 IO-15 IO- [7:0] IO ...
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GPIO controller GPIO_AF Address: 0x16 – 0x17 Type: RW Reset: 0x00 Description: Setting of the GPIO function. LSB (0x16 IO-7 IO MSB (0x17 IO-15 IO- [7: ...
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STMPE16M31, STMPE24M31 10 PWM array controller The STMPE24M31 integrates 8 independent PWM controllers capable of blinking and brightness control. Each of the PWM controllers can be programmed to execute a series of blinking/brightness control actions. One PWM controller could be ...
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PWM array controller GPIOn_PWM_CFG Address: 0x20-2F Type: RW Reset: 0x00 Description: This register controls the routing network which connects each PWM channel to any GPIO channel. GPIOn_PWM_CFG register (n=0-15, represent the GPIO channel number OUT_EN RESERVED RW RW ...
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STMPE16M31, STMPE24M31 11 PWM controller The PWM controller allows to control the brightness, ramping/fading and blinking of LEDs. The STMPE24M31/16M31 features 8 independent PWM controllers. The PWM controllers outputs are connected to the GPIO through the PWM array controller. The ...
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PWM controller Table 12. PWM function registers (continued) Address 0x50 0x51 0x52 0x53 0x54 0x55 0x56 0x57 0x58 0x59 0x5A 0x5B 0x5C 0x5D 0x5E 0x5F PWM_MASTER_EN Address: 0x30 Type: RW Reset: 0x00 Description: ENABLE/DISABLE setting of all PWM channels. 7 ...
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STMPE16M31, STMPE24M31 PWM_n_SET Address: 0x40, 0x44, 0x48, 0x4C, 0x50, 0x54, 0x58, 0x5C Type: RW Reset: 0x00 Description: Setting of brightness, time unit and ramp-mode BRIGTHNESS [7:4] BRIGHTNESS: It defines the duty cycle during the ...
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PWM controller PWM_n_CTRL Address: 0x41, 0x45, 0x49, 0x4D, 0x51, 0x55, 0x59, 0x5D Type: RW Reset: 0x00 Description: Setting of ON/OFF period, repetition, and ON/OFF order Period [7:6] Period 0 Define the ON time ...
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STMPE16M31, STMPE24M31 PWM_n_RAMP_RATE Address: 0x42, 0x46, 0x4A, 0x4E, 0x52, 0x56, 0x5A, 0x5E Type: RW Reset: 0x00 Description: Setting of ramp rate 7 6 INV Reserved [7] INV LED driving/sinking mode Write ‘1’ for LED sinking mode ...
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PWM controller PWM_n_TRIG Address: 0x43, 0x47, 0x4B, 0x4F, 0x53, 0x57, 0x5B, 0x5F Type: RW Reset: 0x00 Description: Setting of touch sensor-triggered PWM RESERVED [7:6] RESERVED [6:5] EN: Write ‘1’ to enable touch sensor-triggered ...
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STMPE16M31, STMPE24M31 12 Basic PWM programming The PWM controllers are capable of generating the following brightness patterns: Figure 11. Pulses with programmable brightness, ON/OFF period and repetition The registers need to be programmed for this sequence: – On period = ...
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Basic PWM programming The registers need to be programmed for this sequence : – On Period = Period 0[1:0] * Time Unit [3:0] – Off Period = Period 1[1:0] * Time Unit [3:0] – Duty cycle during On Period = ...
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STMPE16M31, STMPE24M31 12.1 Interrupt on basic PWM controller A basic PWM controller could be programmed to generate interrupt on completion of blinking sequence. User needs to consider: a) Each basic PWM controller has its own bit in interrupt enable/status registers. ...
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... Touch sensor controller 13 Touch sensor controller The STMPE16M31 and STMPE24M31 devices use the STMicroelectronics’ patent pending capacitive front end. The capacitive sensor is configure by the following registers: Table 13. Touch sensor controller registers Address Register Name 0x70 CH_SEN_CTRL RATIO_ENG_REPT 0x71 0x72 0x76 ...
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STMPE16M31, STMPE24M31 Figure 14. Touch sensing module flowchart 13.1 Sampling rate calculation The capacitive sensor operates with a 2 MHz base clock, a single capacitive sensor scans active channels. The SCLK_DIV divides the sensor clock by 64-1024, ...
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Touch sensor controller The impedance reading is the output of an internal MAF (median averaging filter samples are taken for each reading, the impedance reading is the sum 9-bit samples. To allow maximum ...
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STMPE16M31, STMPE24M31 13.4 Locked impedance Locked impedance is data available in channel data the moment 0x06 is written into “channel data type register”. Writing a different value into the “channel data type register” allows the locked impedance to be refreshed. ...
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Touch sensor controller CAP_SEN_CTRL Address: 0x70 Type: RW Reset: 0x00 Description: This register controls the capacitive sensor’s operation CS_EN [7] CS_EN Write ‘1’ to enable the capacitive sensor module Write ‘0’ to disable the ...
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STMPE16M31, STMPE24M31 RATIO_ENG_REPT_CTRL 7 6 MaxRptDrop 0 Address: 0x71 Type: RW Reset: 0x00 Description: This register controls the report of movement in the ration engine. [7:4] MaxRptDrop Maximum number of report that is dropped (due to displacement < MinDisp). If ...
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Touch sensor controller [7:0] S-X Write ‘1’ to enable the corresponding capacitive sensor channel Write ‘0’ to disable the corresponding capacitive sensor channel 54/85 Doc ID 16174 Rev 3 STMPE16M31, STMPE24M31 ...
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STMPE16M31, STMPE24M31 CAL_INT Address: 0x76 Type: RW Reset: 0x00 Description: This register configures the interval between successive calibrations MULTIPLIER [7:6] MULTIPLIER Set the multiplier value for calibration interval set in Interval[5:0] ‘00’ for 8 ...
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Touch sensor controller CAL_MOD Address: 0x77 Type: RW Reset: 0x00 Description: This register configures the way calibration samples are collected, and the model of calibration algorithm CSInterval [7:3] CSInterval Set the interval between samples ...
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STMPE16M31, STMPE24M31 MAF_SET Address: 0x78 Type: RW Reset: 0x00 Description: This register chooses the median averaging filter mode Reserved [2:1] MAF_Mode ‘00’ to collect 10 samples, remove 2 samples ‘01’ to collect 18 samples, ...
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Touch sensor controller CH_DATA-n Address: 0xC0-0xEF Type: RW Reset: 0x00 Description: Capacitive sensor channel data. The type of data represented by this register depends on the channel data type register (0x7C). LSB, address : 0xC0 + (2*N channel ...
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STMPE16M31, STMPE24M31 13.6 Definition of data accessible through channel data register Table 14. Types of data accessible through the channel data register Data name TVR EVR Channel delay Impedance Calibrated Impedance Locked impedance TVR (touch variance register threshold ...
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Touch sensor controller 13.7 Ratiometric engine The STMPE16M31/24M31 support ratiometric slider/wheel implementation where a very high number of steps could be obtained from relatively few physical sensing channels. The high number of steps is derived from the ratio of capacitance ...
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STMPE16M31, STMPE24M31 RATIO_ENG_SET Address: 0x80 Type: RW Reset: 0x00 Description: Operation setup of ratio engine RESERVED DATAMODE RE2FilterEn [7] RESERVED [6] DATAMODE Setting of data presentation ‘1’ to display 1 byte position data in ...
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Touch sensor controller RATIO_ENG-n_CFG Address: 0x81, 0x82 Type: RW Reset: 0x00 Description: Configure the channels used in ratio engine 1 and RANGE [7:5] RANGE: ‘Number of channels used in ratio engine. Maximum is ...
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STMPE16M31, STMPE24M31 RATIO_ENG_STA Address: 0x83 Type: R Reset: 0x00 Description: This register report the event of multi touch in the ratio engine [7:2] RESERVED [1] MT2 Read ‘1’ when more than 1 touch is ...
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Touch sensor controller 3rd byte [23:16 Touch [9:0] POS Position of the touch in ratio engine sensors [15:10] MOV Movement of the touch location as a function of POS1 – POS0, where POS1 is ...
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STMPE16M31, STMPE24M31 RATIO_ENG_DATA_n (production silicon) Address: 0x84-0x86, 0x87-0x89 Type: R Reset: 0x0000 Description: Position of the touch as calculation output of Ratio Engine 1 and 2 Data is organized as a "packet" bytes. The data is backed by ...
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Touchkey controller 14 Touchkey controller The touchkey controller processes raw capacitance measurement data into “touch/no- touch” boolean data for easy usage. The 2 key filter units provides additional flexibility by allowing the system to define a maximum number of keys ...
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STMPE16M31, STMPE24M31 KEY_FILT_CFG Address: 0x90 Type: RW Reset: 0x00 Description: Setting of key filter unit RESERVED [7:4] RESERVED Position of the touch in ratio engine sensors [3:2] Mode_KFU2 ‘00’ for no filter ‘01’ for ...
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Touchkey controller Bit 15-8 (0x93 for KFGROUP-1, 0x97 for KFGROUP- S15 S14 Bit 23-16 (0x94 for KFGROUP-1, 0x98 for KFGROUP- S23 S22 [23:0] S-X Write ‘1’ to include ...
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STMPE16M31, STMPE24M31 Bit 23-16 (0x9C S23 S22 [23:0] S-X Read ‘1’ if the corresponding sensor channel status is ‘touched’. TOUCH_DET Address: 0xB4-B6 Type: RW Reset: 0x000000 Description: Represents the real time status of the ...
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Touchkey controller Bit 23-16 (0xB6 S23 S22 [7:0] S-X Read ‘1’ if the corresponding sensor channel status is ‘touched’ 70/ S21 S20 S19 Doc ID ...
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STMPE16M31, STMPE24M31 15 Maximum rating Stressing the device above the rating listed in the “Absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other ...
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DC electrical characteristics 16 DC electrical characteristics - unless stated otherwise. °C Table 19. DC electrical characteristics Symbol Vcc Core supply voltage Vio IO supply voltage Iactive ACTIVE current Iactive ACTIVE current Isleep SLEEP current Ihibernate HIBERNATE current ...
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STMPE16M31, STMPE24M31 16.1 Capacitive sensor specification - unless stated otherwise. °C Symbol Capacitive sensor Cs sensitivity Variance of Cs across Csvr channels Parameter Test conditions V = 2.7 - 5.5 V, internal IO V REG V = 2.7 ...
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Application information 17 Application information 17.1 Average current consumption In application unlikely that touch event occurs 100% of the time. Power consumption for STMPExxM31 can be reduced significantly with the proper use of the available device Sleep mode. ...
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STMPE16M31, STMPE24M31 18 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: ...
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Package mechanical data Figure 21. Package outline for QFN40 ( mm) - pitch 0.4 mm 76/85 Doc ID 16174 Rev 3 STMPE16M31, STMPE24M31 ...
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STMPE16M31, STMPE24M31 Table 20. Package mechanical data for QFN40 ( mm) - pitch 0.4 mm Symbol Figure 22. QFN40 recommended footprint without ground pad VIA Millimeters Min Typ ...
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Package mechanical data Figure 23. QFN40 recommended footprint with ground pad VIA 78/85 0.68 1.27 0.30 1.27 0.68 Via Doc ID 16174 Rev 3 STMPE16M31, STMPE24M31 ...
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STMPE16M31, STMPE24M31 Figure 24. Tape information for QFN40 ( mm) - pitch 0.4 mm Doc ID 16174 Rev 3 Package mechanical data 79/85 ...
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Package mechanical data Figure 25. Reel information for QFN40 ( mm) - pitch 0.4 mm 80/85 Doc ID 16174 Rev 3 STMPE16M31, STMPE24M31 ...
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STMPE16M31, STMPE24M31 Figure 26. Package outline for QFN32 ( mm) - pitch 0.4 mm Doc ID 16174 Rev 3 Package mechanical data 81/85 ...
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Package mechanical data Table 21. Package mechanical data for QFN32 ( mm) - pitch 0.4 mm Symbol e/2 L Figure 27. Footprint recommendation for QFN32 ( mm) ...
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STMPE16M31, STMPE24M31 Figure 28. Reel information for QFN32 ( mm) - pitch 0.4 mm Doc ID 16174 Rev 3 Package mechanical data 83/85 ...
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Revision history 19 Revision history Table 22. Document revision history Date 02-Nov-2009 08-Feb-2010 12-Jan-2011 84/85 Revision 1 Initial release. Document status promoted from preliminary data to datasheet. 2 Updated: low operating current values, Section 13. Updated: Section 2 3 and ...
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... STMPE16M31, STMPE24M31 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...