When the power supply is applied to VCC " />
參數(shù)資料
型號(hào): CAT9554AHV4I-GT2
廠商: ON Semiconductor
文件頁數(shù): 2/14頁
文件大?。?/td> 0K
描述: IC I/O EXPANDER I2C SMBUS 16TQFN
標(biāo)準(zhǔn)包裝: 2,000
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
安裝類型: 表面貼裝
封裝/外殼: 16-WQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 16-TQFN(4x4)
包裝: 帶卷 (TR)
包括: POR
CAT9554, CAT9554A
http://onsemi.com
10
PowerOn Reset Operation
When the power supply is applied to VCC pin, an internal
poweron reset pulse holds the CAT9554/9554A in a reset
state until VCC reaches VPOR level. At this point, the reset
condition is released and the internal state machine and the
CAT9554/9554A registers are initialized to their default
state.
12
34
5
6
7
8
9
SCL
SDA
READ FROM
PORT
DATA INTO
PORT
S 0100 A2
A0 1
A
A1
A
DATA 4
NA P
no acknowledge
from master
acknowledge
from master
acknowledge
from slave
slave address
data from port
start condition
stop
condition
DATA 2
DATA 3
DATA 4
DATA 1
data from port
DATA 1
DATA
S 0100 A2
A0 0
A
A1
0 1 0 0 A2 A1 A0
A
DATA
A
acknowledge from master
acknowledge from slave
slave address
data from register
COMMAND BYTE
AS
1
acknowledge from slave
At this moment mastertransmitter becomes
masterreceiver and slavereceiver
becomes slavetransmitter
NA
no acknowledge
from master
data from register
P
last byte
first byte
Figure 12. Read from Register
Figure 13. Read Input Port Register
tIR
tIV
INT
tPH
R/W
tPS
R/W
相關(guān)PDF資料
PDF描述
CAT9554AHV4I-T2 IC I/O EXPANDER I2C/SMBUS 16TQFN
CAT9555HV6I-G IC I/O EXPANDER 16BI 2C 24TQFN
CC-2401K2A-CS MODEM 2400BAUD SECURE 3.3V
CC-2434K2-CS5 MODEM FAX 33K 5V
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