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參數(shù)資料
型號(hào): PCA9534BS3,118
廠商: NXP Semiconductors
文件頁(yè)數(shù): 21/25頁(yè)
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 8B 16HVQFN
特色產(chǎn)品: NXP - I2C Interface
標(biāo)準(zhǔn)包裝: 1
接口: I²C,SM 總線
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時(shí)鐘: 400kHz
電源電壓: 2.3 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 16-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 16-HVQFN
包裝: 標(biāo)準(zhǔn)包裝
包括: POR
其它名稱(chēng): 568-8706-6
PCA9534_3
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 6 November 2006
5 of 25
NXP Semiconductors
PCA9534
8-bit I2C-bus and SMBus low power I/O port with interrupt
6.1.3 Register 1 - Output Port register
This register reects the outgoing logic levels of the pins dened as outputs by Register 3.
Bit values in this register have no effect on pins dened as inputs. Reads from this register
return the value that is in the ip-op controlling the output selection, not the actual pin
value.
6.1.4 Register 2 - Polarity Inversion register
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.
Table 4.
Register 0 - Input Port register bit description
Bit
Symbol
Access
Value
Description
7
I7
read only
X
determined by externally applied logic level
6
I6
read only
X
5
I5
read only
X
4
I4
read only
X
3
I3
read only
X
2
I2
read only
X
1
I1
read only
X
0
I0
read only
X
Table 5.
Register 1 - Output Port register bit description
Legend: * default value.
Bit
Symbol
Access
Value
Description
7
O7
R
1*
reects outgoing logic levels of pins dened as
outputs by Register 3
6O6
R
1*
5O5
R
1*
4O4
R
1*
3O3
R
1*
2O2
R
1*
1O1
R
1*
0O0
R
1*
Table 6.
Register 2 - Polarity Inversion register bit description
Legend: * default value.
Bit
Symbol
Access
Value
Description
7
N7
R/W
0*
inverts polarity of Input Port register data
0 = Input Port register data retained (default value)
1 = Input Port register data inverted
6
N6
R/W
0*
5
N5
R/W
0*
4
N4
R/W
0*
3
N3
R/W
0*
2
N2
R/W
0*
1
N1
R/W
0*
0
N0
R/W
0*
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