MAX7313AEG+ Maxim Integrated Products, MAX7313AEG+ Datasheet

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MAX7313AEG+

Manufacturer Part Number
MAX7313AEG+
Description
I/O Expander 24-Pin QSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX7313AEG+

Package
24QSOP
Operating Temperature
-40 to 125 °C
The MAX7313 I
peripheral provides microprocessors with 16 I/O ports.
Each I/O port can be individually configured as either
an open-drain current-sinking output rated at 50mA and
5.5V, or a logic input with transition detection. A 17th
port can be used for transition detection interrupt, or as
a general-purpose output. The outputs are capable of
driving LEDs, or providing logic outputs with external
resistive pullup up to 5.5V.
PWM current drive is integrated with 8 bits of control.
Four bits are global control and apply to all LED outputs
to provide coarse adjustment of current from fully off to
fully on with 14 intensity steps. Each output then has
individual 4-bit control, which further divides the global-
ly set current into 16 more steps. Alternatively, the cur-
rent control can be configured as a single 8-bit control
that sets all outputs at once.
The MAX7313 is pin and software compatible with the
MAX7311, PCA9535, and PCA9555.
Each output has independent blink timing with two blink
phases. All LEDs can be individually set to be on or off
during either blink phase, or to ignore the blink control.
The blink period is controlled by a register.
The MAX7313 supports hot insertion. All port pins, the
INT output, SDA, SCL, and the slave-address inputs
ADO-2 remain high impedance in power-down (V+ =0V)
with up to 6V asserted upon them.
The MAX7313 is controlled through the 2-wire
I
any one of 64 I
19-3059; Rev 4; 4/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Typical Application Circuit appears at end of data sheet.
2
C/SMBus serial interface, and can be configured to
Control, Interrupt, and Hot-Insertion Protection
LCD Backlights
LED Status Indication
Portable Equipment
Keypad Backlights
RGB LED Drivers
Notebook Computers
2
C addresses.
2
________________________________________________________________ Maxim Integrated Products
C-compatible serial interfaced
16-Port I/O Expander with LED Intensity
General Description
Applications
♦ 400kbs, 2-Wire Serial Interface, 5.5V Tolerant
♦ 2V to 3.6V Operation
♦ Overall 8-Bit PWM LED Intensity Control
♦ Two-Phase LED Blinking
♦ High Output Current (50mA max Per Port)
♦ Outputs are 5.5V-Rated Open Drain
♦ Supports Hot Insertion
♦ Inputs are Overvoltage Protected to 5.5V
♦ Transition Detection with Interrupt Output
♦ 1.2µA (typ), 3.6µA (max) Standby Current
♦ Small 4mm x 4mm Thin QFN Package
♦ -40°C to +125°C Temperature Range
♦ All Ports Can Be Configured as Inputs or Outputs
MAX7313ATG
MAX7313AEG
Pin Configurations continued at end of data sheet.
PART
Global 16-Step Intensity Control
Individual 16-Step Intensity Controls
TOP VIEW
INT/O16
SDA
SCL
AD1
AD2
V+
19
20
21
22
23
24
-40°C to +125°C
-40°C to +125°C 24 QSOP
TEMP RANGE
18
1
17
2
Ordering Information
MAX7313ATG
THIN QFN
16
3
Pin Configurations
15
4
14
PIN-
PACKAGE
24 Thin QFN
4mm x 4mm
x 0.8mm
5
13
6
12
11
10
9
8
7
Features
P10
P9
P8
GND
P7
P6
PKG
CODE
T2444-4
1

Related parts for MAX7313AEG+

MAX7313AEG+ Summary of contents

Page 1

... Keypad Backlights RGB LED Drivers Notebook Computers Typical Application Circuit appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ 400kbs, 2-Wire Serial Interface, 5.5V Tolerant ♦ ...

Page 2

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection ABSOLUTE MAXIMUM RATINGS Voltage (with respect to GND) V+ .............................................................................-0.3V to +4V SCL, SDA, AD0, AD1, AD2, P0–P15 ........................-0.3V to +6V INT/O16 ....................................................................-0.3V to +8V DC Current on P0–P15, ...

Page 3

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection ELECTRICAL CHARACTERISTICS (continued) (Typical Operating Circuit 3.6V, T (Note 1) PARAMETER SYMBOL Output Low Voltage V OL P0–P15, INT/O16 Output Low-Voltage SDA V OLSDA PWM ...

Page 4

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection TIMING CHARACTERISTICS (continued) (Typical Operating Circuit 3.6V, T (Note 1) PARAMETER Interrupt Valid Interrupt Reset Output Data Valid Input Data Setup Time Input Data Hold ...

Page 5

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection (T = +25°C, unless otherwise noted.) A PORT OUTPUT LOW VOLTAGE WITH 50mA LOAD CURRENT vs. TEMPERATURE 0.6 0 2. ...

Page 6

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection PIN QSOP QFN 18, 23, 24 4–11, 13–20 1–8, 10– — PAD Exposed pad DATA FROM ...

Page 7

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection as an input or an output. Reading an input ports regis- ter latches the current-input logic level of the affected eight ports. Transition detection allows all ports config- ured ...

Page 8

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection only as an input. A pullup resistor, typically 4.7kΩ, is required on SCL if there are multiple masters on the 2- wire interface the master in a ...

Page 9

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection 2 Table 1. MAX7313 I C Slave Address Map PIN AD2 PIN AD1 PIN AD0 GND SCL GND GND SCL V+ GND SDA GND GND SDA V+ V+ SCL ...

Page 10

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection 2 Table 1. MAX7313 I C Slave Address Map (continued) PIN AD2 PIN AD1 PIN AD0 SCL SCL GND SCL SCL V+ SCL SDA GND SCL SDA V+ SDA ...

Page 11

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection COMMAND BYTE IS STORED ON RECEIPT OF ACKNOWLEDGE FROM MAX7313 S SLAVE ADDRESS Figure 7. Command Byte Received HOW COMMAND BYTE AND DATA BYTE MAP INTO MAX7313'S REGISTERS ACKNOWLEDGE ...

Page 12

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection WRITE TO OUTPUT PORTS REGISTERS (BLINK PHASE 0 REGISTERS/BLINK PHASE 1 REGISTERS) SCL SLAVE ADDRESS COMMAND BYTE SDA S A6 ...

Page 13

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 2. Register Address Map REGISTER Read input ports P7–P0 Read input ports P15–P8 Blink phase 0 outputs P7–P0 Blink phase 0 outputs P15–P8 Ports configuration P7–P0 Ports configuration ...

Page 14

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 3. Power-Up Configuration REGISTER FUNCTION POWER-UP CONDITION Blink phase 0 outputs P7–P0 High-impedance outputs Blink phase 0 outputs P15–P8 High-impedance outputs Ports configuration P7–P0 Ports configuration P15–P8 Ports ...

Page 15

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 4. Configuration Register (continued) REGISTER CONFIGURATION Write device configuration Read back device configuration Disable global intensity control—intensity is set by registers 0x10–0x17 for ports P0 through P15 when ...

Page 16

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 5. Ports Configuration Registers REGISTER Ports configuration P7– input output) Read back ports configuration P7–P0 Ports configuration P15– input output) ...

Page 17

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Blink Phase Registers When the blink function is disabled, the two blink phase 0 registers set the logic levels of the 16 ports (P0 through P15) when configured as ...

Page 18

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 10. PWM Application Scenarios APPLICATION All outputs static without PWM A mix of static and PWM outputs, with PWM outputs using different PWM settings A mix of static ...

Page 19

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection MASTER INTENSITY TIMESLOT Figure 15. Individual (or Global) Set to 1/16 MASTER INTENSITY TIMESLOT Figure ...

Page 20

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Using PWM Intensity Controls with Blink Disabled When blink is disabled (Table 7), the blink phase 0 reg- isters specify each output’s logic level during the PWM on-time (Table ...

Page 21

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 13. Master, O16 Intensity Register REGISTER MASTER AND GLOBAL INTENSITY Write master and global intensity Read back master and global intensity Master intensity duty cycle is 0/15 (off); ...

Page 22

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 14. Output Intensity Registers REGISTER OUTPUTS P1, P0 INTENSITY Write output P1, P0 intensity Read back output P1, P0 intensity Output P1 intensity duty cycle is 1/16 Output ...

Page 23

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 14. Output Intensity Registers (continued) REGISTER OUTPUTS P9, P8 INTENSITY Write output P9, P8 intensity Read back output P9, P8 intensity OUTPUTS P11, P10 INTENSITY Write output P11, ...

Page 24

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Driving LED Loads When driving LEDs, a resistor in series with the LED must be used to limit the LED current to no more than 50mA. Choose the resistor ...

Page 25

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection 0.047μF μC SDA SDA SCL SCL I/O INT/O16 AD0 AD1 AD2 Pin Configurations (continued) TOP VIEW INT/O16 1 AD1 2 AD2 MAX7313AEG ...

Page 26

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection (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.) 26 ______________________________________________________________________________________ Package Information ...

Page 27

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 27 © 2005 Maxim Integrated Products ...

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