MAX7302ATE+T Maxim Integrated Products, MAX7302ATE+T Datasheet

IC LED DRIVER LINEAR 16-TQFN

MAX7302ATE+T

Manufacturer Part Number
MAX7302ATE+T
Description
IC LED DRIVER LINEAR 16-TQFN
Manufacturer
Maxim Integrated Products
Type
Linear (I²C Interface)r
Datasheet

Specifications of MAX7302ATE+T

Topology
Open Drain, PWM
Number Of Outputs
9
Internal Driver
Yes
Type - Primary
Backlight, LED Blinker
Type - Secondary
White LED
Frequency
1MHz
Voltage - Supply
1.62 V ~ 3.6 V
Mounting Type
Surface Mount
Package / Case
16-TQFN Exposed Pad
Operating Temperature
-40°C ~ 125°C
Current - Output / Channel
25mA
Internal Switch(s)
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Efficiency
-
Lead Free Status / Rohs Status
 Details
The MAX7302 I
peripheral features 9 level-translating I/Os, and operates
from a 1.62V to 3.6V power supply. The MAX7302 fea-
tures a port supply V
ports to operate from a separate power supply from 1.62V
to 5.5V. An address select input, AD0, allows up to four
unique slave addresses for the device.
The MAX7302 ports P2–P9 can be configured as inputs,
push-pull outputs, and open-drain outputs. Port P1 can
be configured as a general-purpose input, open-drain
output, or an open-drain INT output. Ports P2–P9 can be
configured as OSCIN and OSCOUT, respectively. Ports
P2–P9 can also be used as configurable logic arrays
(CLAs) to form user-defined logic gates, replacing exter-
nal discrete gates. Outputs are capable of sinking up to
25mA, and sourcing up to 10mA when configured as
push-pull outputs.
The MAX7302 includes an internal oscillator for PWM,
blink, and key debounce, or to cascade multiple
MAX7302s. The external clock can be used to set a spe-
cific PWM and blink timing. The RST input asynchronous-
ly clears the 2-wire interface and terminates a bus lockup
involving the MAX7302.
All ports configured as an output feature a 33-step PWM,
allowing any output to be set from fully off, 1/32 to 31/32
duty cycle, to fully on. All output ports also feature LED
blink control, allowing blink periods of 1/8s, 1/4s, 1/2s, 1s,
2s, 4s, or 8s. Any port can blink during this period with a
1/16 to 15/16 duty cycle.
The MAX7302 is specified over the -40°C to +125°C
temperature range and is available in 16-pin QSOP and
16-pin TQFN (3mm x 3mm) packages.
19-0749; Rev 1; 12/07
Pin Configurations appear at end of data sheet.
SMBus is a trademark of Intel Corp.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
Level-Translating GPIO and LED Driver with CLA
Cell Phones
Servers
System I/O Ports
LCD/Keypad Backlights
LED Status Indicators
2
C-/SMBus™-compatible, serial-interfaced
________________________________________________________________ Maxim Integrated Products
LA
that allows level-translation on I/O
General Description
Applications
SMBus/I
♦ 1.62V to 5.5V I/O Level-Translation Port Supply (V
♦ 1.62V to 3.6V Power Supply
♦ 9 Individually Configurable GPIO Ports
♦ Individual 33-Step PWM Intensity Control
♦ Blink Controls with 15 Steps on Outputs
♦ 1kHz PWM Period Provides Flicker-Free LED
♦ 25mA (max) Port Output Sink Current (100mA
♦ Inputs Overvoltage Protected Up to 5.5V (V
♦ Transition Detection with Optional Interrupt Output
♦ Optional Input Debouncing
♦ I/O Ports Configurable as Logic Gates (CLA)
♦ External RST Input
♦ Oscillator Input and Output Enable Cascading
♦ Low 0.75µA (typ) Standby Current
+Denotes lead-free package.
*EP = Exposed paddle.
MAX7302AEE+
MAX7302ATE+
Intensity Control
max Ground Current)
Multiple Devices
μC
P1 Open-Drain I/O
P2–P9 Push-Pull or Open-Drain I/Os
PART
SDA
SCL
RST
2
INT
C Interfaced 9-Port,
Typical Operating Circuit
SDA
SCL
RST
P1/INT
ADO
-40°C to +125°C
-40°C to +125°C
+1.8V
TEMP RANGE
V
DD
MAX7302
Ordering Information
GND
+4.5V
V
LA
P2
P3
P4
P5
P6
P7
P8
P9
PIN-
PACKAGE
16 QSOP
16 TQFN-EP*
(3mm x 3mm)
1.8V OPEN-DRAIN OUTPUT
4.5V PUSH-PULL OUTPUT
4.5V LOGIC INPUT
3.3V LOGIC INPUT
2.5V LOGIC INPUT
Features
T1633-4
LA
CODE
E16-4
PKG
)
LA
1
)

Related parts for MAX7302ATE+T

MAX7302ATE+T Summary of contents

Page 1

... System I/O Ports LCD/Keypad Backlights LED Status Indicators Pin Configurations appear at end of data sheet. SMBus is a trademark of Intel Corp. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. 2 SMBus/I C Interfaced 9-Port, ♦ ...

Page 2

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND.) V ..........................................................................-0. SCL, SDA, AD0, RST, P1..................................-0. P2–P9 ............................................................-0. P1–P9 ...

Page 3

Level-Translating GPIO and LED Driver with CLA PORT, INTERRUPT (INT), AND RESET (RST) TIMING CHARACTERISTICS (V = 1.62V to 3.6V MAX DD MIN (Figures 10, 15, 16 and 17) PARAMETER Oscillator Frequency Port Output ...

Page 4

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA (V = 3.3V 3.3V and T = +25°C, unless otherwise noted STANDBY CURRENT vs. TEMPERATURE 2.0 INTERFACE IDLE 1.8 INTERNAL OSCILLATOR DISABLED 1.6 ...

Page 5

Level-Translating GPIO and LED Driver with CLA (V = 3.3V 3.3V and T = +25°C, unless otherwise noted STAGGERED PWM OUTPUTS MAX7302 toc09 PORT2 5V/div PORT3 5V/div PORT4 5V/div PORT5 5V/div 400μs/div _______________________________________________________________________________________ 2 SMBus/I ...

Page 6

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA PIN NAME QSOP TQFN AD0 RST P1/INT 5 3 P2/OSCIN 6 4 P3/OSCOUT ...

Page 7

Level-Translating GPIO and LED Driver with CLA MAX7302 AD0 SCL SDA RST REGISTER Detailed Description The MAX7302 9-port, general-purpose port expander operates from a 1.62V to 3.6V power supply. Port P1 can be configured as an input and an open-drain ...

Page 8

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA Table 1. Register Address Map REGISTER Port P1 or INT Output Port P2 or OSCIN Input Port P3 or OSCOUT Output Port P4 Port P5 Port P6 Port ...

Page 9

Level-Translating GPIO and LED Driver with CLA Table 3. Configuration Register (0x26) REGISTER BIT DESCRIPTION Interrupt status flag D7 (read only) Transition flag D6 (read only) D5 Reserved Blink prescalor bits D4, D3, D2 RST timer D1 RST POR D0 ...

Page 10

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA The MAX7302 is set to one of four I using the address input AD0 (see Table 5) and is 2 accessed over SMBus serial ...

Page 11

Level-Translating GPIO and LED Driver with CLA PORT_ [2] (DEBOUNCE) PORT_ [0] 0 (PORTIN) 1 TRANSITION DETECTION INT Figure 1. Input Port Structure Table 7. Port I/O Registers (I/O Port Set as an Output, Registers 0x01 to 0x09) REGISTER BIT ...

Page 12

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA 3-BIT PRESCALER CLOCK CONFIG26 [4:2] Figure 2. Output Port Structure SELECT INPUT OUTPUT P1 Figure 3. Port I/O Structure Ports P2–P9 are overvoltage protected to ...

Page 13

Level-Translating GPIO and LED Driver with CLA Table 8. Port Lock Registers ADDRESS CODE D7 D6 Port Port 0x72 P5 P4 0x73 — — When debouncing is enabled for a port input, transition detection applies to the stored debounced input ...

Page 14

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA Port P1 can be configured as a latching interrupt out- put, INT, that flags any transients on any combination of selected ports configured as inputs. Configurable logic gate ...

Page 15

Level-Translating GPIO and LED Driver with CLA 0 TO 1MHz EXTERNAL P2/OSCIN OSCILLATOR 0 TO 1MHz EXTERNAL P2/OSCIN OSCILLATOR Figure 5. Synchronizing Multiple MAX7302s (External Clock) Table 9. PWM Settings on Output Port PWM SETTINGS Port static ...

Page 16

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA PORT REGISTER VALUE 0b0X000000 OUTPUT STATIC LOW (STATIC LOGIC-LOW OUTPUT OR LED DRIVE ON) 0b0X000001 OUTPUT LOW 1/32 DUTY PWM 0b0X000010 OUTPUT LOW 2/32 DUTY PWM 0b0X000011 OUTPUT ...

Page 17

Level-Translating GPIO and LED Driver with CLA Table 10. Blink and PWM Frequencies BLINK OR PWM SETTING 0.125H z) Blink period is 4s (0.25Hz) Blink period is 2s (0.5Hz) ...

Page 18

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA Table 12. CLA0 (P2–P5) Configuration Register Setting (0x28) (continued) FUNCTION 2 input AND/OR P2 and P3 noninverted 2 input AND/OR P2 and P3 inverted 2 input AND/OR P2 ...

Page 19

Level-Translating GPIO and LED Driver with CLA Table 14. CLA1 (P6–P9) Configuration Register Setting (0x29) (continued) FUNCTION 2 input AND/OR P6 and P8 noninverted 2 input AND/OR P6 and P8 inverted 2 input AND/OR P6 inverted and P8 2 input ...

Page 20

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA Table 18. Port I/O Registers (I/O Port 5 and 9 Configured as CLA Outputs, Registers 0x05 and 0x09) REGISTER BIT DESCRIPTION D7 Don’t care Port supply D6 reference ...

Page 21

Level-Translating GPIO and LED Driver with CLA ENABLE P2 DEBOUNCE PIN P2 INVERT P2 DEBOUNCE PIN P3 INVERT P3 ENABLE P3 ENABLE P4 DEBOUNCE PIN P4 INVERT P4 INVERT P5 P5 OUTPUT REGISTER PIN CLA/GPIO ENABLE EXOR23 ...

Page 22

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA Serial Interface Serial Addressing The MAX7302 operates as a slave that sends and 2 receives data through an I C-compatible, 2-wire inter- face. The interface uses a serial-data ...

Page 23

Level-Translating GPIO and LED Driver with CLA The acknowledge bit is a clocked 9th bit that the recipi- ent uses to handshake receipt of each byte of data (see Figure 13). Thus, each effectively transferred byte requires 9 bits. The ...

Page 24

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA WRITE TO OUTPUT PORTS REGISTERS (P4) SCL SLAVE ADDRESS SDA START CONDITION P9 ...

Page 25

Level-Translating GPIO and LED Driver with CLA Applications Information Serial interfaces SDA, SCL, and AD0 remain high impedance with asserted on them when the MAX7302 is powered down (V = 0V) independent of DD the voltages on ...

Page 26

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA TOP VIEW + ADO 2 RST 3 MAX7302 P1/INT 4 P2/OSCIN 5 P3/OSCOUT QSOP Chip Information PROCESS: BiCMOS 26 ______________________________________________________________________________________ ...

Page 27

Level-Translating GPIO and LED Driver with CLA (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ 2 SMBus/I C Interfaced 9-Port, Package Information 27 ...

Page 28

SMBus/I C Interfaced 9-Port, Level-Translating GPIO and LED Driver with CLA (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) E MARKING E/2 AAAA D/2 ...

Page 29

Level-Translating GPIO and LED Driver with CLA (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) PKG 8L 3x3 12L 3x3 REF. MIN. NOM. MAX. MIN. ...

Page 30

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 30 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products ...

Related keywords