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PCA9553DPのメーカーはNXP Semiconductorsです、この部品の機能は「4-bit I2C LED driver with programmable blink rates」です。 |
部品番号 | PCA9553DP |
| |
部品説明 | 4-bit I2C LED driver with programmable blink rates | ||
メーカ | NXP Semiconductors | ||
ロゴ | |||
このページの下部にプレビューとPCA9553DPダウンロード(pdfファイル)リンクがあります。 Total 18 pages
INTEGRATED CIRCUITS
PCA9553
4-bit I2C LED driver with programmable
blink rates
Product data sheet
Supersedes data of 2003 May 02
2004 Oct 01
Philips
Semiconductors
1 Page Philips Semiconductors
4-bit I2C LED driver with programmable blink rates
Product data sheet
PCA9553
BLOCK DIAGRAM
PCA9553
SCL
SDA
INPUT
FILTERS
I2C-BUS
CONTROL
INPUT
REGISTER
LED SELECT (LSx)
REGISTER
VDD
POWER-ON
RESET
OSCILLATOR
VSS
PRESCALER 0
REGISTER
PRESCALER 1
REGISTER
0
1
PWM0
REGISTER
PWM1
REGISTER
BLINK0
BLINK1
NOTE: ONLY ONE I/O SHOWN FOR CLARITY
Figure 2. Block diagram
LEDx
SW01036
2004 Oct 01
3
3Pages Philips Semiconductors
4-bit I2C LED driver with programmable blink rates
Product data sheet
PCA9553
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
6
6 Page | |||
ページ | 合計 : 18 ページ | ||
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PDF ダウンロード | [ PCA9553DP データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
PCA9553D | 4-bit I2C LED driver with programmable blink rates | NXP Semiconductors |
PCA9553D01 | 4-bit I2C LED driver with programmable blink rates | NXP Semiconductors |
PCA9553D02 | 4-bit I2C LED driver with programmable blink rates | NXP Semiconductors |
PCA9553DP | 4-bit I2C LED driver with programmable blink rates | NXP Semiconductors |