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부품번호 | PCA9552PW 기능 |
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기능 | 16-bit I2C LED driver with programmable blink rates | ||
제조업체 | NXP Semiconductors | ||
로고 | |||
전체 21 페이지수
INTEGRATED CIRCUITS
PCA9552
16-bit I2C LED driver with programmable
blink rates
Product data sheet
Supersedes data of 2003 May 02
2004 Oct 01
Philips
Semiconductors
Philips Semiconductors
16-bit I2C LED driver with programmable blink rates
Product data sheet
PCA9552
BLOCK DIAGRAM
PCA9552
SCL
SDA
INPUT
FILTERS
A2 A1 A0
I2C-BUS
CONTROL
INPUT
REGISTER
LED SELECT (LSx)
REGISTER
VDD
RESET
VSS
POWER-ON
RESET
OSCILLATOR
PRESCALER 0
REGISTER
PRESCALER 1
REGISTER
0
1
PWM0
REGISTER
PWM1
REGISTER
BLINK0
BLINK1
NOTE: ONLY ONE I/O SHOWN FOR CLARITY
Figure 3. Block diagram
LEDx
SW00787
2004 Oct 01
4
4페이지 Philips Semiconductors
16-bit I2C LED driver with programmable blink rates
Product data sheet
PCA9552
CHARACTERISTICS OF THE I2C-BUS
The I2C-bus is for 2-way, 2-line communication between different ICs
or modules. The two lines are a serial data line (SDA) and a serial
clock line (SCL). Both lines must be connected to a positive supply
via a pull-up resistor when connected to the output stages of a device.
Data transfer may be initiated only when the bus is not busy.
Bit transfer
One data bit is transferred during each clock pulse. The data on the
SDA line must remain stable during the HIGH period of the clock
pulse as changes in the data line at this time will be interpreted as
control signals (see Figure 6).
Start and stop conditions
Both data and clock lines remain HIGH when the bus is not busy. A
HIGH-to-LOW transition of the data line, while the clock is HIGH is
defined as the start condition (S). A LOW-to-HIGH transition of the
data line while the clock is HIGH is defined as the stop condition (P)
(see Figure 7).
System configuration
A device generating a message is a transmitter: a device receiving
is the receiver. The device that controls the message is the master
and the devices which are controlled by the master are the slaves
(see Figure 8).
SDA
SCL
data line
stable;
data valid
change
of data
allowed
SW00363
Figure 6. Bit transfer
SDA
SDA
SCL
S
SCL
P
START condition
STOP condition
Figure 7. Definition of start and stop conditions
SW00365
SDA
SCL
MASTER
TRANSMITTER/
RECEIVER
SLAVE
RECEIVER
SLAVE
TRANSMITTER/
RECEIVER
MASTER
TRANSMITTER
MASTER
TRANSMITTER/
RECEIVER
SLAVE
Figure 8. System configuration
I2C
MULTIPLEXER
SW00366
2004 Oct 01
7
7페이지 | |||
구 성 | 총 21 페이지수 | ||
다운로드 | [ PCA9552PW.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 |
PCA9552PW | 16-bit I2C LED driver with programmable blink rates | NXP Semiconductors |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |