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参数资料
型号： SX1509BULTRT
厂商： Semtech
文件页数： 26/41页
文件大小： 0K
描述： IC GPIO EXPANDER I2C 16CH 28QFN
特色产品： SX1508/SX1509 GPIO Expanders
标准包装： 1
接口： I²C
输入/输出数： 16
中断输出： 是
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： 28-UFQFN 裸露焊盘
供应商设备封装： 28-QFN-UT（4x4）
包装： 标准包装
包括： LED 驱动器 / 小键盘引擎
其它名称： SX1509IULDKR
SX1509IULDKR-ND
ADVANCED COMMUNICATIONS & SENSING
Rev 1 – 30
th Oct. 2009
32
www.semtech.com
SX1507/SX1508/SX1509
World’s Lowest Voltage Level Shifting GPIO
with LED Driver and Keypad Engine
Addr
Name
Default
Bits
Description
0x00
RegInputDisableB
0x00
7:0
Disables the input buffer of each IO
0 : Input buffer is enabled (input actually being used)
1 : Input buffer is disabled (input actually not being used or LED connection)
0x01
RegInputDisableA
0x00
7:0
Disables the input buffer of each IO
0 : Input buffer is enabled (input actually being used)
1 : Input buffer is disabled (input actually not being used, LED connection)
0x02
RegLongSlewB
0x00
7:0
Enables increased slew rate of the output buffer of each [output-configured] IO
0 : Increased slew rate is disabled
1 : Increased slew rate is enabled
0x03
RegLongSlewA
0x00
7:0
Enables increased slew rate of the output buffer of each [output-configured] IO
0 : Increased slew rate is disabled
1 : Increased slew rate is enabled
0x04
RegLowDriveB
0x00
7:0
Enables reduced drive of the output buffer of each [output-configured] IO
0 : Reduced drive is disabled
1 : Reduced drive is enabled
0x05
RegLowDriveA
0x00
7:0
Enables reduced drive of the output buffer of each [output-configured] IO
0 : Reduced drive is disabled
1 : Reduced drive is enabled
0x06
RegPullUpB
0x00
7:0
Enables the pull-up for each IO
0 : Pull-up is disabled
1 : Pull-up is enabled
0x07
RegPullUpA
0x00
7:0
Enables the pull-up for each IO
0 : Pull-up is disabled
1 : Pull-up is enabled
0x08
RegPullDownB
0x00
7:0
Enables the pull-down for each IO
0 : Pull-down is disabled
1 : Pull-down is enabled
0x09
RegPullDownA
0x00
7:0
Enables the pull-down for each IO
0 : Pull-down is disabled
1 : Pull-down is enabled
0x0A
RegOpenDrainB
0x00
7:0
Enables open drain operation for each [output-configured] IO
0 : Regular push-pull operation
1 : Open drain operation
0x0B
RegOpenDrainA
0x00
7:0
Enables open drain operation for each [output-configured] IO
0 : Regular push-pull operation
1 : Open drain operation
0x0C
RegPolarityB
0x00
7:0
Enables polarity inversion for each IO
0 : Normal polarity : RegData[x] = IO[x]
1 : Inverted polarity : RegData[x] = !IO[x] (for both input and output configured IOs)
0x0D
RegPolarityA
0x00
7:0
Enables polarity inversion for each IO
0 : Normal polarity : RegData[x] = IO[x]
1 : Inverted polarity : RegData[x] = !IO[x] (for both input and output configured IOs)
0x0E
RegDirB
0xFF
7:0
Configures direction for each IO.
0 : IO is configured as an output
1 : IO is configured as an input
0x0F
RegDirA
0xFF
7:0
Configures direction for each IO.
0 : IO is configured as an output
1 : IO is configured as an input
0x10
RegDataB
0xFF
7:0
Write: Data to be output to the output-configured IOs
Read: Data seen at the IOs, independent of the direction configured.
0x11
RegDataA
0xFF
7:0
Write: Data to be output to the output-configured IOs
Read: Data seen at the IOs, independent of the direction configured.
0x12
RegInterruptMaskB
0xFF
7:0
Configures which [input-configured] IO will trigger an interrupt on NINT pin
0 : An event on this IO will trigger an interrupt
1 : An event on this IO will NOT trigger an interrupt
0x13
RegInterruptMaskA
0xFF
7:0
Configures which [input-configured] IO will trigger an interrupt on NINT pin
0 : An event on this IO will trigger an interrupt
1 : An event on this IO will NOT trigger an interrupt
7:6
Edge sensitivity of RegData[15]
5:4
Edge sensitivity of RegData[14]
3:2
Edge sensitivity of RegData[13]
0x14
RegSenseHighB
0x00
1:0
Edge sensitivity of RegData[12]
00 : None
01 : Rising
10 : Falling
11 : Both
7:6
Edge sensitivity of RegData[11]
5:4
Edge sensitivity of RegData[10]
3:2
Edge sensitivity of RegData[9]
0x15
RegSenseLowB
0x00
1:0
Edge sensitivity of RegData[8]
00 : None
01 : Rising
10 : Falling
11 : Both
7:6
Edge sensitivity of RegData[7]
5:4
Edge sensitivity of RegData[6]
3:2
Edge sensitivity of RegData[5]
0x16
RegSenseHighA
0x00
1:0
Edge sensitivity of RegData[4]
00 : None
01 : Rising
10 : Falling
11 : Both
0x17
RegSenseLowA
0x00
7:6
Edge sensitivity of RegData[3]
00 : None
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