參數(shù)資料
型號(hào)： PCA9557
廠商： NXP Semiconductors N.V.
英文描述： 8-bit I2C and SMBus I/0 port with reset
中文描述： 8位I2C和SMBus I / 0端口復(fù)位
文件頁(yè)數(shù)： 2/16頁(yè)
文件大?。?/td> 127K
代理商： PCA9557
Philips Semiconductors
Product data
PCA9557
8-bit I
2
C and SMBus I/0 port with reset
2
2001 Dec 12
853-2308 27449
FEATURES
Lower voltage, higher performance migration path for the
PCA9556
8 general purpose input/output expander/collector
Input/output configuration register
Active HIGH polarity inversion register
I
2
C and SMBus interface logic
Internal power-on reset
Noise filter on SCL/SDA inputs
Active LOW reset input
3 address pins allowing up to 8 devices on the I
2
C/SMBus
High impedance open drain on I/O0
No glitch on power-up
Power-up with all channels configured as inputs
Low standby current
Operating power supply voltage range of 2.3 V to 5.5 V
5 V tolerant inputs/outputs
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
Package offer: SO 16, TSSOP 16
DESCRIPTION
The PCA9557 is a silicon CMOS circuit which provides parallel
input/output expansion for SMBus and I
2
C applications. The
PCA9557 consists of an 8-bit input port register, 8-bit output port
register, and an I
2
C/SMBus interface. It has low current
consumption and a high impedance open drain output pin, I/O0.
The system master can enable the PCA9557’s I/O as either input or
output by writing to the configuration register.
The system master can also invert the PCA9557 inputs by writing to
the active HIGH polarity inversion register.
Finally, the system master can reset the PCA9557 in the event of a
timeout by asserting a LOW in the reset input.
The power-on reset puts the registers in their default state and
initializes the I
2
C/SMBus state machine. The RESET pin causes the
same reset/initialization to occur without depowering the part.
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
su01045
SCL
SDA
A0
A1
A2
I/O0
I/O1
V
SS
V
DD
RESET
I/O7
I/O6
I/O5
I/O4
I/O3
I/O2
Figure 1. Pin configuration
PIN DESCRIPTION
PIN
NUMBER
1
SYMBOL
FUNCTION
SCL
Serial clock line
2
SDA
Serial data line
3
A0
Address input 0
4
A1
Address input 1
5
A2
Address input 2
6
I/O0
I/O0 (open drain)
7
I/O1
I/O1
8
V
SS
I/O2
Supply ground
9
I/O2
10
I/O3
I/O3
11
I/O4
I/O4
12
I/O5
I/O5
13
I/O6
I/O6
14
I/O7
I/O7
15
RESET
Active low reset input
16
V
DD
Supply voltage
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
ORDER CODE
DRAWING NUMBER
16-Pin Plastic SO (narrow)
–40 to +85
°
C
–40 to +85
°
C
PCA9557D
SOT109-1
16-Pin Plastic TSSOP
Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.
SMBus as specified by the Smart Battery System Implementers Forum is a derivative of the Philips I
2
C patent.
I
2
C is a trademark of Philips Semiconductors Corporation.
PCA9557PW
SOT403-1
相關(guān)PDF資料
PDF描述
PCA9558 8-bit I2C and SMBus I/O port with 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM and 2 k bit EEPROM
PCA9559 5-bit multiplexed/1-bit latched 6-bit I I C EEPROM(5位多路的/1位鎖存的6位IIC EEPROM)
PCA9564 Parallel bus to I2C-bus controller
PCA9665 Fm+ parallel bus to I2C-bus controller
PCA9665N Fm+ parallel bus to I2C-bus controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9557BS 制造商:NXP Semiconductors 功能描述:
PCA9557BS,118 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM TP GPIO RST RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9557D 功能描述:接口-I/O擴(kuò)展器 Remote 8B I2C & SMBus I/O Expander RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9557D,112 功能描述:接口-I/O擴(kuò)展器 OCT SMBUS/I2C INTRFC RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9557D,118 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM TP GPIO RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
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