參數(shù)資料
型號: CAT9555WI-T1
廠商: ON Semiconductor
文件頁數(shù): 14/16頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C 16B 24SOIC
標(biāo)準(zhǔn)包裝: 1
接口: I²C,串行,SMBus
輸入/輸出數(shù): 16
中斷輸出:
頻率 - 時鐘: 400kHz
電源電壓: 2.3 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 24-SOIC
包裝: 標(biāo)準(zhǔn)包裝
包括: POR
產(chǎn)品目錄頁面: 806 (CN2011-ZH PDF)
其它名稱: CAT9555WI-T1DKR
CAT9555WI-T2DKR
CAT9555WI-T2DKR-ND
CAT9555
http://onsemi.com
7
INT: Interrupt Output
The opendrain interrupt output is activated when one of
the port pins configured as an input changes state (differs
from the corresponding input port register bit state). The
interrupt is deactivated when the input returns to its previous
state or the input port register is read.
Since there are two 8bit ports that are read independently,
the interrupt caused by Port 0 will not be cleared by a read
of Port 1, or vice versa.
Changing an I/O from an output to an input may cause a
false interrupt if the state of the pin does not match the
contents of the input port register.
Output Port
Register Data
Input Port
Register Data
Polarity
Register Data
Polarity
Inversion Register
Write
Polarity
Register
Data from
Shift Register
Read Pulse
Write Pulse
Write
Configuration
Data from
Shift Register
Data from
Shift Register
Configuration
Register
D
Q
FF
D
Q
FF
D
Q
LATCH
D
Q
FF
Q1
Q2
Output Port
Register
Input Port
Register
Figure 6. Simplified Schematic of I/Os
Pulse
Q
CK
Q
CK
Q
CK
To INT
VSS
VCC
I/O Pin
100 kW
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