|
PCA9655EDWR2G Datasheet, PDF (1/20 Pages) ON Semiconductor – Remote 16-bit I/O Expander for I2C Bus with Interrupt | |||
|
PCA9655E
Remote 16-bit I/O Expander
for I2C Bus with Interrupt
The PCA9655E provides 16 bits of General Purpose parallel Input /
Output (GPIO) expansion through the I2Câbus / SMBus.
The PCA9655E consists of two 8âbit Configuration (Input or
Output selection); Input, Output and Polarity Inversion (activeâHIGH
or activeâLOW operation) registers. At power on, all I/Os default to
inputs. Each I/O may be configured as either input or output by writing
to its corresponding I/O configuration bit. The data for each Input or
Output is kept in its corresponding Input or Output register. The
Polarity Inversion register may be used to invert the polarity of the
read register. All registers can be read by the system master.
The PCA9655E provides an openâdrain interrupt output which is
activated when any input state differs from its corresponding input
port register state. The interrupt output is used to indicate to the system
master that an input state has changed. The powerâon reset sets the
registers to their default values and initializes the device state
machine.
Three hardware pins (AD0, AD1, AD2) are used to configure the
I2Câbus slave address of the device. Up to 64 devices are allowed to
share the same I2Câbus / SMBus.
Features
⢠VDD Operating Range: 1.65 V to 5.5 V
⢠SDA Sink Capability: 30 mA
⢠5.5 V Tolerant I/Os
⢠Polarity Inversion Register
⢠Active LOW Interrupt Output
⢠Low Standby Current
⢠Noise Filter on SCL/SDA Inputs
⢠No Glitch on Powerâup
⢠Internal Powerâon Reset
⢠64 Programmable Slave Addresses Using Three Address Pins
⢠16 I/O Pins Which Default to 16 Inputs
⢠I2C SCL Clock Frequencies Supported:
Standard Mode: 100 kHz
Fast Mode: 400 kHz
Fast Mode +: 1 MHz
⢠ESD Performance: 2000 V Human Body Model,
200 V Machine Model
⢠These are PbâFree Devices
http://onsemi.com
MARKING
DIAGRAMS
SOICâ24
DW SUFFIX
CASE 751E
PCA9655E
AWLYYWWG
TSSOPâ24
DT SUFFIX
CASE 948H
PCA96
55EG
AWLYYWW
1
WQFN24
MT SUFFIX
CASE 485BG
PCA
9655E
ALYWG
G
XXXX = Specific Device Code
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
G or G = PbâFree Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
© Semiconductor Components Industries, LLC, 2012
1
May, 2012 â Rev. 1
Publication Order Number:
PCA9655E/D
|
▷ |