MAX7313ATG-T Maxim Integrated, MAX7313ATG-T Datasheet

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MAX7313ATG-T

Manufacturer Part Number
MAX7313ATG-T
Description
Interface - I/O Expanders 16-Bit I/O Port Expander
Manufacturer
Maxim Integrated
Series
MAX7313r
Datasheet

Specifications of MAX7313ATG-T

Maximum Operating Frequency
400 KHz
Operating Supply Voltage
2 V to 3.6 V
Operating Temperature Range
- 40 C to + 125 C
Mounting Style
SMD/SMT
Package / Case
TQFN-24 EP
Output Current
50 mA
Power Dissipation
761 mW
The MAX7313 I
eral 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 5; 6/11
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.
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
C-compatible serial interfaced periph-
________________________________________________________________ Maxim Integrated Products
16-Port I/O Expander with LED Intensity
General Description
Applications
o 400kbs, 2-Wire Serial Interface, 5.5V Tolerant
o 2V to 3.6V Operation
o Overall 8-Bit PWM LED Intensity Control
o Two-Phase LED Blinking
o High Output Current (50mA max Per Port)
o Outputs are 5.5V-Rated Open Drain
o Supports Hot Insertion
o Inputs are Overvoltage Protected to 5.5V
o Transition Detection with Interrupt Output
o 1.2µA (typ), 3.6µA (max) Standby Current
o Small 4mm x 4mm TQFN Package
o -40°C to +125°C Temperature Range
o All Ports Can Be Configured as Inputs or Outputs
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed Pad.
MAX7313ATG+
MAX7313AEG+
Pin Configurations continued at end of data sheet.
Global 16-Step Intensity Control
Individual 16-Step Intensity Controls
TOP VIEW
PART
INT/O16
*CONNECT EP TO GND
SDA
SCL
AD1
AD2
V+
19
20
21
22
23
24
+
18
1
-40°C to +125°C
-40°C to +125°C
17
4mm x 4mm
2
TEMP RANGE
Ordering Information
MAX7313ATG
TQFN
16
3
Pin Configurations
15
4
14
5
*EP
13
6
12
11
10
9
8
7
PIN-PACKAGE
24 TQFN-EP*
24 QSOP
Features
P10
P9
P8
GND
P7
P6
1

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MAX7313ATG-T Summary of contents

Page 1

... MAX7313AEG+ -40°C to +125°C + Denotes a lead(Pb)-free/RoHS-compliant package Exposed Pad. Pin Configurations TOP VIEW SCL SDA MAX7313ATG INT/O16 22 AD1 23 *EP AD2 TQFN 4mm x 4mm *CONNECT EP TO GND Pin Configurations continued at end of data sheet. ...

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 P0–P15, INT/O16 Output Low-Voltage SDA V OLSDA PWM Clock ...

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 TQFN- 21 18, 23, 24 4–11, 13–20 1–8, 10– — — DATA FROM SHIFT REGISTER ...

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 S SLAVE ADDRESS Figure 7. Command Byte Received HOW COMMAND BYTE AND DATA BYTE MAP INTO MAX7313'S REGISTERS ACKNOWLEDGE FROM MAX7313 S ...

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 P7–P0 are inputs ...

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 The 17th output, O16, is controlled through 2 bits in the configuration register, which provide the same static or blink control as the other 16 output ports. PWM Intensity ...

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 blink phases (Tables 8 and 9). The effect of setting an output’s blink phase x register bit shown in Table 12. LEDs can be ...

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 Load Currents Higher than 50mA The MAX7313 can be used to drive loads drawing more than 50mA, like relays and high-current white LEDs, by paralleling outputs. Use at ...

Page 25

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

Page 26

... 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. 26 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2011 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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