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参数资料
| 型号： | PCA9506DGG,512 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 1/34页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 40B 56TSSOP |
| 产品培训模块： | I²C Bus Fundamentals |
| 特色产品： | NXP - I2C Interface |
| 标准包装： | 35 |
| 接口： | I²C |
| 输入/输出数： | 40 |
| 中断输出： | 是 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 2.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 56-TFSOP（0.240"，6.10mm 宽） |
| 供应商设备封装： | 56-TSSOP |
| 包装： | 管件 |
| 包括： | POR |
| 产品目录页面： | 824 (CN2011-ZH PDF) |
| 其它名称： | 568-3354-5 935280798512 PCA9506DGG |
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1.
General description
The PCA9505/PCA9506 provide 40-bit parallel input/output (I/O) port expansion for
I2C-bus applications organized in 5 banks of 8 I/Os. At 5 V supply voltage, the outputs are
capable of sourcing 10 mA and sinking 15 mA with a total package load of 600 mA to
allow direct driving of 40 LEDs. Any of the 40 I/O ports can be configured as an input or
output. Output ports are totem-pole and their logic state changes at the Acknowledge
(bank change). The PCA9505 is identical to the PCA9506 except that it includes 100 k
Ω
internal pull-up resistors on all the I/Os. The PCA9506 does not include the internal
pull-ups on the I/Os to reduce power consumption when used as outputs or when the
input is driven by a push-pull driver.
The device can be configured to have each input port to be masked in order to prevent it
from generating interrupts when its state changes and to have the I/O data logic state to
be inverted when read by the system master.
An open-drain interrupt (INT) output pin allows monitoring of the input pins and is asserted
each time a change occurs in one or several input ports (unless masked).
The Output Enable (OE) pin 3-states any I/O selected as an output and can be used as an
input signal to blink or dim LEDs (PWM with frequency > 80 Hz and change duty cycle).
The internal Power-On Reset (POR) or hardware reset (RESET) pin initializes the 40 I/Os
as inputs. Three address select pins configure one of 8 slave addresses.
The PCA9506 is available in 56-pin TSSOP and HVQFN packages, while the PCA9505 is
available only in a TSSOP package. They are both specified over the
40 °Cto+85 °C
industrial temperature range.
2.
Features and benefits
Standard mode (100 kHz) and Fast mode (400 kHz) compatible I2C-bus serial
interface
2.3 V to 5.5 V operation with 5.5 V tolerant I/Os
40 configurable I/O pins that default to inputs at power-up
PCA9505 includes 100 k
Ω internal pull-up resistors on all the I/Os
Outputs:
Totem-pole (10 mA source, 15 mA sink) with controlled edge rate output structure
Active LOW output enable (OE) input pin 3-states all outputs
Output state change on Acknowledge
Open-drain active LOW interrupt (INT) output pin allows monitoring of logic level
change of pins programmed as inputs
PCA9505/06
40-bit I2C-bus I/O port with RESET, OE and INT
Rev. 4 — 3 August 2010
Product data sheet
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