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부품번호 | PCA9554N 기능 |
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기능 | 8-bit I2C and SMBus I/O port with interrupt | ||
제조업체 | NXP Semiconductors | ||
로고 | |||
전체 20 페이지수
INTEGRATED CIRCUITS
PCA9554/PCA9554A
8-bit I2C and SMBus I/O port with interrupt
Product data sheet
Supersedes data of 2002 Jul 26
2004 Sep 30
Philips
Semiconductors
Philips Semiconductors
8-bit I2C and SMBus I/O port with interrupt
Product data sheet
PCA9554/PCA9554A
BLOCK DIAGRAM
A0
A1
A2
SCL
SDA
VDD
VSS
INPUT
FILTER
POWER-ON
RESET
I2C/SMBUS
CONTROL
8-BIT
WRITE pulse
INPUT/
OUTPUT
PORTS
READ pulse
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
VCC
LP
FILTER
NOTE: ALL I/Os ARE SET TO INPUTS AT RESET
Figure 3. Block diagram
INT
SU01411
2004 Sep 30
4
4페이지 Philips Semiconductors
8-bit I2C and SMBus I/O port with interrupt
Product data sheet
PCA9554/PCA9554A
Device address
SLAVE ADDRESS
0 1 0 0 A2 A1 A0 R/W
FIXED
HARDWARE SELECTABLE
su01669
Figure 5. PCA9554 address
slave address
0 1 1 1 A2 A1 A0 R/W
fixed
programmable
su01418
Figure 6. PCA9554A address
Bus transactions
Data is transmitted to the PCA9554/PCA9554A registers using the write mode as shown in Figures 7 and 8. Data is read from the
PCA9554/PCA9554A registers using the read mode as shown in Figures 9 and 10. These devices do not implement an auto-increment function
so once a command byte has been sent, the register which was addressed will continue to be accessed by reads until a new command byte
has been sent.
SCL
1 2345 6 78 9
slave address
command byte
data to port
SDA S 0 1 0 0 A2 A1 A0 0 A 0 0 0 0 0 0 0 1 A
start condition
R/W acknowledge
from slave
acknowledge
from slave
WRITE TO
PORT
DATA 1
AP
acknowledge
from slave
DATA OUT
FROM PORT
Figure 7. WRITE to output port register
DATA 1 VALID
tpv
su01421
SCL
1 2345 6 78 9
slave address
command byte
data to register
SDA S 0 1 0 0 A2 A1 A0 0 A 0 0 0 0 0 0 1 1/0 A
start condition
DATA TO
REGISTER
R/W acknowledge
from slave
acknowledge
from slave
DATA
Figure 8. WRITE to configuration or polarity inversion registers
AP
acknowledge
from slave
su01422
2004 Sep 30
7
7페이지 | |||
구 성 | 총 20 페이지수 | ||
다운로드 | [ PCA9554N.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
PCA9554 | 8-bit I2C and SMBus I/O port with interrupt | NXP Semiconductors |
PCA9554 | PCA9554 Remote 8-Bit I2C and SMBus I/O Expander With Interrupt Output (Rev. C) | Texas Instruments |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |