参数资料
型号: SX1508IULTRT
厂商: Semtech
文件页数: 4/41页
文件大小: 0K
描述: IC GPIO EXPANDER I2C 8CH 20QFN
特色产品: SX1508/SX1509 GPIO Expanders
标准包装: 1
接口: I²C
输入/输出数: 8
中断输出:
频率 - 时钟: 400kHz
电源电压: 1.2 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-UFQFN 裸露焊盘
供应商设备封装: 20-QFN-UT(3x3)
包装: 标准包装
包括: LED 驱动器 / 小键盘引擎
其它名称: SX1508IULDKR
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 30
th Oct. 2009
12
www.semtech.com
SX1507/SX1508/SX1509
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
4
BLOCK DETAILED DESCRIPTION
4.1
SX1507 4-channel I
2C GPIO with LED Driver
Input
Filter
Reset
VDDM
I
2C Bus
Control
NRESET
SCL
SDA
Interrupt
4-Bit
VCC1
I/O[0]
I/O[1]
I/O[2]
I/O[3]
R/W
GND
LED Driver
Blink (Timer)
Breath (Ramp)
Intensity (PWM)
Clock Mgmt
Internal
Oscillator
I/O Bank A
A
SX1507
NINT
OSCIO
External
Clock
ADDR1
ADDR0
Figure 4 – 4-channel Low Voltage GPIO with LED Driver
4.2
SX1508 8-channel I
2C GPIO with LED Driver and Keypad Engine
Input
Filter
Reset
VDDM
I
2C Bus
Control
VCC1
NRESET
SCL
SDA
Interrupt
8-Bit
I/O[0]
I/O[1]
I/O[2]
I/O[3]
R/W
I/O[4]
I/O[5]
I/O[6]
I/O[7]
ADDR1
GND
VCC2
LED Driver
Blink (Timer)
Breath (Ramp)
Intensity (PWM)
Clock Mgmt
Internal
Oscillator
External
Clock
I/O Bank A
A
I/O Bank B
A
SX1508
NINT
OSCIO
ADDR0
Keypad
Engine
16 Keys Max
Figure 5 – 8-channel Low Voltage GPIO with LED Driver and Keypad Engine
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