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參數(shù)資料
型號: PCA9575PW2,118
廠商: NXP Semiconductors
文件頁數(shù): 15/38頁
文件大?。?/td> 0K
描述: IC I2C/SMBUS 16BIT GPIO 28TSSOP
產品培訓模塊: I²C Bus Fundamentals
特色產品: NXP - I2C Interface
標準包裝: 1
接口: I²C,SM 總線
輸入/輸出數(shù): 16
中斷輸出:
頻率 - 時鐘: 400kHz
電源電壓: 1.1 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 28-TSSOP
包裝: 標準包裝
包括: POR
其它名稱: 568-6647-6
PCA9575_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 9 November 2009
22 of 38
NXP Semiconductors
PCA9575
16-bit I2C-bus and SMBus, level translating, low voltage GPIO
9.
Bus transactions
Data is transmitted to the PCA9575 registers using ‘Write Byte’ transfers (see Figure 13
Data is read from the PCA9575 registers using ‘Read Byte’ transfers (see Figure 15 and
(1) Slave address shown in this example is for the 24-pin version.
Fig 13. Write to Output port register
0
A
S
slave address(1)
START condition
R/W
acknowledge
from slave
002aad569
0001010
0
command byte
A
acknowledge
from slave
12345678
SCL
9
SDA
DATA 1
A
write to port
data out from port
tv(Q)
acknowledge
from slave
DATA 1 VALID
data to port
100000
0
P
STOP
condition
(1) Slave address shown in this example is for the 24-pin version.
Fig 14. Write to Polarity inversion, Bus-hold enable, Pull-up/pull-down select, Conguration, Interrupt mask and
Interrupt status registers
0
A
S
slave address(1)
START condition
R/W
acknowledge
from slave
002aad570
0
XXXX
0
command byte
A
acknowledge
from slave
12345678
SCL
9
SDA
DATA
A
data to register
acknowledge
from slave
data to register
100000
0
P
STOP
condition
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