MAX7315ATE+ Maxim Integrated Products, MAX7315ATE+ Datasheet

IC I/O EXPANDER I2C 8B 16TQFN-EP

MAX7315ATE+

Manufacturer Part Number
MAX7315ATE+
Description
IC I/O EXPANDER I2C 8B 16TQFN-EP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX7315ATE+

Interface
I²C, SMBus
Number Of I /o
8
Interrupt Output
Yes
Frequency - Clock
400kHz
Voltage - Supply
2 V ~ 3.6 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-TQFN Exposed Pad
Operating Supply Voltage
2 V to 3.6 V
Power Dissipation
1176 mW
Operating Temperature Range
- 40 C to + 125 C
Input Voltage
1.08 V to 1.4 V
Maximum Clock Frequency
400 KHz
Mounting Style
SMD/SMT
Output Voltage
0.15 V
Chip Configuration
8 Bit
Bus Frequency
400kHz
Ic Interface Type
I2C, SMBus
No. Of I/o's
8
Supply Voltage Range
2V To 3.6V
Digital Ic Case Style
TQFN
No. Of Pins
16
Filter Terminals
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX7315 I
peripheral provides microprocessors with 8 I/O ports.
Each I/O port can be individually configured as either an
open-drain current-sinking output rated at 50mA at 5.5V,
or a logic input with transition detection. A ninth port can
be used for transition detection interrupt or as a general-
purpose output. The outputs are capable of directly dri-
ving 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 in 14 intensity steps. Each output then has indi-
vidual 4-bit control, which further divides the globally
set current into 16 more steps. Alternatively, the current
control can be configured as a single 8-bit control that
sets all outputs at once.
The MAX7315 is pin and software compatible with the
PCA9534 and PCA9554(A).
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 MAX7315 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 MAX7315 is controlled through the 2-wire I
serial interface, and can be configured to one of 64 I
addresses.
19-3056; Rev 3; 1/05
Typical Application Circuit appears at end of data sheet.
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.
Control, Interrupt, and Hot-Insertion Protection
LCD Backlights
LED Status Indication
Portable Equipment
Laptop Computers
2
C-/SMBus-compatible serial interfaced
________________________________________________________________ Maxim Integrated Products
8-Port I/O Expander with LED Intensity
General Description
Keypad Backlights
RGB LED Drivers
Cellular Phones
Applications
2
C/SMBus
2
C
o 400kbps, 2-Wire Serial Interface, 5.5V Tolerant
o 2V to 3.6V Operation
o Overall 8-Bit PWM LED Intensity Control
o Automatic Two-Phase LED Blinking
o 50mA Maximum Port Output Current
o Supports Hot Insertion
o Outputs Are 5.5V-Rated Open Drain
o Inputs Are Overvoltage Protected to 5.5V
o Transition Detection with Interrupt Output
o Low Standby Current (1.2µA typ; 3.3µA max)
o Tiny 3mm x 3mm, Thin QFN Package
o -40°C to +125°C Temperature Range
o All Ports Can Be Configured as Inputs or Outputs
MAX7315ATE -40°C to +125°C
MAX7315AEE -40°C to +125°C 16 QSOP
MAX 7315AU E -40°C to +125°C 16 TSSOP
Pin Configurations continued at end of data sheet.
PART
TOP VIEW
Global 16-Step Intensity Control
Plus Individual 16-Step Intensity Control
SDA
ADO
AD1
V+
RANGE
13
14
15
16
TEMP
Ordering Information
12
1
MAX7315ATE
THIN QFN
11
Pin Configurations
2
10
PIN-
PACKAGE
16 Thin QFN
3mm x 3mm
x 0.8mm
3
9
4
8
7
6
5
P5
P4
GND
P3
MARK
Features
TOP
AAU
T1633-4
CODE
PKG
1

Related parts for MAX7315ATE+

MAX7315ATE+ Summary of contents

Page 1

... Portable Equipment Cellular Phones Laptop 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. o 400kbps, 2-Wire Serial Interface, 5.5V Tolerant 3.6V Operation ...

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–P7 ..........................-0.3V to +6V INT/O8 .....................................................................-0.3V to +8V DC Current on P0–P7, ...

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–P7, INT/O8 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/TSSOP QFN 15, 16, 1 4–7, 9–12 2–5, 7– — PAD DATA FROM SHIFT REGISTER ...

Page 7

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection ports register latches the current-input logic level of the affected eight ports. Transition detection allows all ports configured as inputs to be monitored for changes in their logic status. ...

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. MAX7315 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. MAX7315 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 MAX7315'S REGISTERS ACKNOWLEDGE FROM MAX7315 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 Blink phase 0 outputs Ports configuration Blink phase 1 outputs Master, O8 intensity Configuration Outputs intensity P1, P0 Outputs intensity ...

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 Ports configuration P7–P0 Ports P7–P0 are inputs Blink phase 1 outputs P7–P0 High-impedance outputs ...

Page 15

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 4. Configuration register (continued) REGISTER CONFIGURATION Disable data change interrupt—INT/O8 output is controlled by the O0 and O1 bits Enable data change interrupt—INT/O8 output is controlled by port ...

Page 16

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 5. Ports Configuration Register REGISTER Ports configuration (1 = input output) Read-back ports configuration Table 6. Input Ports Register REGISTER Read input ports Reading a blink ...

Page 17

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Using PWM Intensity Controls with Blink Enabled When blink is enabled (Table 7), the blink phase 0 regis- ter and blink phase 1 register specify each output’s logic level ...

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 where the resistance of the resistor in series with the LED LED (Ω). V is the supply voltage used to drive the LED (V). SUPPLY V is ...

Page 21

I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection Table 13. Master, O8 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 15. MAX7311, PCA9535, and PCA9555 Register Compatibility PCA9534, PCA9554(A) ADDRESS REGISTER Inputs 0x00 Inputs registers Outputs 0x01 Blink phase 0 registers Not implemented; register writes are Polarity inversion ...

Page 24

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.) 24 ______________________________________________________________________________________ Package Information ...

Page 25

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.) MARKING D/2 D 0.10 C PKG ...

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 © 2005 Maxim Integrated Products ...

Related keywords