Datasheet > PCA9553DP/02-T

PCA9553DP/02-T

更新时间： 2024-02-25 17:17:55

品牌	Logo	应用领域
恩智浦 - NXP		光电二极管
页数	文件大小	规格书
26页	133K
描述
4-bit I2C-bus LED driver with programmable blink rates

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PCA9553DP/02-T 技术参数

Source Url Status Check Date：	2013-06-14 00:00:00	是否无铅：	含铅
是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	TSSOP, TSSOP8,.19	Reach Compliance Code：	unknown
风险等级：	5.69	JESD-30 代码：	R-PDSO-G8
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP8,.19
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：	2.5/5 V	认证状态：	Not Qualified
子类别：	Display Drivers	表面贴装：	YES
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
Base Number Matches：	1

PCA9553DP/02-T 数据手册

PCA9553

4-bit I²C-bus LED driver with programmable blink rates

Rev. 06 — 29 December 2008

Product data sheet

1. General description

The PCA9553 LED blinker blinks LEDs in I²C-bus and SMBus applications where it is

necessary to limit bus trafﬁc or free up the I²C-bus master's (MCU, MPU, DSP, chip set,

etc.) timer. The uniqueness of this device is the internal oscillator with two programmable

blink rates. To blink LEDs using normal I/O expanders like the PCF8574 or PCA9554, the

bus master must send repeated commands to turn the LED on and off. This greatly

increases the amount of trafﬁc on the I²C-bus and uses up one of the master's timers. The

PCA9553 LED blinker instead requires only the initial set-up command to program

BLINK RATE 1 and BLINK RATE 2 (i.e., the frequency and duty cycle). From then on, only

one command from the bus master is required to turn each individual open-drain output

ON, OFF, or to cycle at BLINK RATE 1 or BLINK RATE 2. Maximum output sink current is

25 mA per bit and 100 mA per package.

Any bits not used for controlling the LEDs can be used for General Purpose Parallel

Input/Output (GPIO) expansion.

Power-On Reset (POR) initializes the registers to their default state, all zeroes, causing

the bits to be set HIGH (LED off).

Due to pin limitations, the PCA9553 is not featured with hardware address pins. The

PCA9553/01 and the PCA9553/02 have different ﬁxed I²C-bus addresses allowing

operation of both on the same bus.

2. Features

I 4 LED drivers (on, off, ﬂashing at a programmable rate)

I 2 selectable, fully programmable blink rates (frequency and duty cycle) between

0.172 Hz and 44 Hz (5.82 seconds and 0.023 seconds)

I Input/outputs not used as LED drivers can be used as regular GPIOs

I Internal oscillator requires no external components

I I²C-bus interface logic compatible with SMBus

I Internal power-on reset

I Noise ﬁlter on SCL/SDA inputs

I 4 open-drain outputs directly drive LEDs to 25 mA

I Controlled edge rates to minimize ground bounce

I No glitch on power-up

I Supports hot insertion

I Low standby current

I Operating power supply voltage range of 2.3 V to 5.5 V

I 0 Hz to 400 kHz clock frequency

12 3 4 5 6 7...26

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与PCA9553DP/02-T相关器件

型号	品牌	描述	获取价格	数据表
PCA9553DP01	NXP	4-bit I2C LED driver with programmable blink rates	获取价格
PCA9553DP02	NXP	4-bit I2C LED driver with programmable blink rates	获取价格
PCA9553TK	NXP	4-bit I2C-bus LED driver with programmable blink rates	获取价格
PCA9553TK,118	NXP	PCA9553 - 4-bit I2C-bus LED driver with programmable blink rates SON 8-Pin	获取价格
PCA9553TK/02	NXP	4-bit I2C-bus LED driver with programmable blink rates	获取价格
PCA9553TK-T	NXP	4-bit I2C-bus LED driver with programmable blink rates - # of Addresses: 1 ; I2C-bus: 400	获取价格

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