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参数资料
| 型号： | 935269195118 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8 I/O, PIA-GENERAL PURPOSE, PDSO16 |
| 封装： | 7.50 MM, PLASTIC, MS-013, SOT-162-1, SO-16 |
| 文件页数： | 8/15页 |
| 文件大小： | 140K |
| 代理商： | 935269195118 |
Philips Semiconductors
Product data
PCA9554/PCA9554A
8-bit I2C and SMBus I/O port with interrupt
2
2002 Jul 26
853-2243 28672
FEATURES
Operating power supply voltage range of 2.3 to 5.5 V
5 V tolerant I/Os
Polarity inversion register
Active low interrupt output
Low stand-by current
Noise filter on SCL/SDA inputs
No glitch on power-up
Internal power-on reset
8 I/O pins which default to 8 inputs
0 to 400 kHz clock frequency
ESD protection exceeds 2000 V HBM per JESD22-A114,
200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
Latch-up testing is done to JESDEC Standard JESD78 which
exceeds 100 mA
Four packages offered: SO16, SSOP16, TSSOP16, and
HVQFN16
DESCRIPTION
The PCA9554 and PCA9554A are 16-pin CMOS devices that
provide 8 bits of General Purpose parallel Input/Output (GPIO)
expansion for I2C/SMBus applications and were developed to
enhance the Philips family of I
@C I/O expanders. The improvements
include higher drive capability, 5V I/O tolerance, lower supply
current, individual I/O configuration, 400 kHz clock frequency, and
smaller packaging. I/O expanders provide a simple solution when
additional I/O is needed for ACPI power switches, sensors,
pushbuttons, LEDs, fans, etc..
The PCA9554/54A consist of an 8-bit Configuration register (Input or
Output selection); 8-bit Input register, 8-bit Output register and an
8-bit Polarity inversion register (Active high or Active low operation).
The system master can enable the I/Os as either inputs or outputs
by writing to the I/O configuration bits. The data for each Input or
Output is kept in the corresponding Input or Output register. The
polarity of the read register can be inverted with the Polarity
Inversion Register. All registers can be read by the system master.
Although pin to pin and I2C address compatible with the PCF8574
series, software changes are required due to the enhancements and
are discussed in Application Note AN469.
The PCA9554/54A open-drain interrupt output is activated when any
input state differs from its corresponding input port register state and
is used to indicate to the system master that an input state has
changed. The power-on reset sets the registers to their default
values and initializes the device state machine.
Three hardware pins (A0, A1, A2) vary the fixed I2C address and
allow up to eight devices to share the same I2C/SMBus. The
PCA9554A is identical to the PCA9554 except that the fixed I2C
address is different allowing up to sixteen of these devices (eight of
each) on the same I2C/SMBus.
ORDERING INFORMATION
PACKAGES
TEMPERATURE
RANGE
ORDER CODE
TOPSIDE MARK
DRAWING NUMBER
16-Pin Plastic SO (wide)
–40 to +85
°C
PCA9554D
SOT162-1
16-Pin Plastic SSOP
–40 to +85
°C
PCA9554DB
9554DB
SOT338-1
16-Pin Plastic TSSOP
–40 to +85
°C
PCA9554PW
9554DH
SOT403-1
16-Pin Plastic HVQFN
–40 to +85
°C
PCA9554BS
9554
SOT629-1
16-Pin Plastic SO (wide)
–40 to +85
°C
PCA9554AD
SOT162-1
16-Pin Plastic SSOP
–40 to +85
°C
PCA9554ADB
9554A
SOT338-1
16-Pin Plastic TSSOP
–40 to +85
°C
PCA9554APW
9554ADH
SOT403-1
16-Pin Plastic HVQFN
–40 to +85
°C
PCA9554ABS
554A
SOT629-1
Standard packing quantities and other packaging data are available at www.philipslogic.com/packaging.
I2C is a trademark of Philips Semiconductors Corporation.
SMBus as specified by the Smart Battery System Implementers Forum is a derivative of the Philips I2C patent.
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