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參數(shù)資料
| 型號： | PCA9536 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 4-bit I2C and SMBus I/O port |
| 中文描述： | 4位I2C和SMBus I / O端口 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 153K |
| 代理商： | PCA9536 |
Philips Semiconductors
Objective data sheet
PCA9536
4-bit I
2
C and SMBus I/O port
2004 Aug 20
4
REGISTERS
Command Byte
Command
Protocol
Function
0
Read byte
Input port register
1
Read/write byte
Output port register
2
Read/write byte
Polarity inversion register
3
Read/write byte
Configuration register
The command byte is the first byte to follow the address byte during
a write transmission. It is used as a pointer to determine which of the
following registers will be written or read.
Register 0 – Input Port Register
bit
X
X
X
X
I3
I2
I1
I0
default
1
1
1
1
1
1
1
1
This register is a read only port. It reflects the incoming logic levels
of the pins, regardless of whether the pin is defined as an input or an
output by Register 3. Writes to this register have no effect.
“X” are “don’t care” bits and can be programmed with either “0”
or “1”.
Register 1 – Output Port Register
bit
X
X
X
X
O3
O2
O1
O0
default
1
1
1
1
1
1
1
1
This register reflects the outgoing logic levels of the pins defined as
outputs by Register 3. Bit values in this register have no effect on
pins defined as inputs. Reads from this register return the value that
is in the flip-flop controlling the output selection, NOT the actual pin
value.
“X” are “don’t care” bits and can be programmed with either “0”
or “1”.
Register 2 – Polarity Inversion Register
bit
X
X
X
X
N3
N2
N1
N0
default
0
0
0
0
0
0
0
0
This register allows the user to invert the polarity of the Input Port
Register data. If a bit in this register is set (written with ‘1’), the
corresponding Input Port data is inverted. If a bit in this register is
cleared (written with a ‘0’), the Input Port data polarity is retained.
“X” are “don’t care” bits and can be programmed with either “0”
or “1”.
Register 3 – Configuration Register
bit
X
X
X
X
C3
C2
C1
C0
default
1
1
1
1
1
1
1
1
This register configures the directions of the I/O pins. If a bit in this
register is set, the corresponding port pin is enabled as an input with
high impedance output driver. If a bit in this register is cleared, the
corresponding port pin is enabled as an output. At reset, the I/Os are
configured as inputs with a weak pull-up to V
DD
.
“X” are “don’t care” bits and can be programmed with either “0”
or “1”.
Power-on Reset
When power is applied to V
DD
, an internal power-on reset holds the
PCA9536 in a reset condition until V
DD
has reached V
POR
. At that
point, the reset condition is released and the PCA9536 registers and
state machine will initialize to their default states. Thereafter, V
DD
must be lowered below 0.2 V to reset the device.
For a power reset cycle, V
DD
must be lowered below 0.2 V and then
restored to the operating voltage.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9536D | 功能描述:接口-I/O擴展器 Remote 4-Bit I2C and 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9536D,112 | 功能描述:接口-I/O擴展器 4-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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9536D,118 | 功能描述:接口-I/O擴展器 I2C/SMBUS 4BIT 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9536D,118-CUT TAPE | 制造商:NXP 功能描述:PCA9536 Series 400 Khz 4-bit I? GPIO Bus and SMBus I/O Port - SOIC - 8 |
| PCA9536D | 制造商:Texas Instruments 功能描述:I/O EXPANDER IC |
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