参数资料
型号: ISL22429WFU10Z
厂商: Intersil
文件页数: 3/13页
文件大小: 0K
描述: IC POT DGTL 128TP LN LP 10-MSOP
标准包装: 50
系列: XDCP™
接片: 128
电阻(欧姆): 10k
电路数: 2
温度系数: 标准值 ±50 ppm/°C
存储器类型: 非易失
接口: 4 线 SPI(芯片选择)
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件
11
FN6332.2
May 28, 2009
FIGURE 12. THREE BYTE WRITE SEQUENCE
FIGURE 13. THREE BYTE READ SEQUENCE
Applications Information
Communicating with ISL22429
Communication with ISL22429 proceeds using SPI interface
through the ACR (address 1000b), IVRi (addresses 0000b,
0001b) and WRi (addresses 0000b, 0001b) registers.
The wiper of the potentiometer is controlled by the WRi
register. Writes and reads can be made directly to these
registers to control and monitor the wiper position without
any non-volatile memory changes. This is done by setting
MSB bit at address 1000b to 1.
The non-volatile IVRi stores the power up value of the wiper.
IVRs are accessible when MSB bit at address 1000b is set
to 0. Writing a new value to the IVRi register will set a new
power up position for the wiper. Also, writing to this register
will load the same value into the corresponding WRi as the
IVRi. Reading from the IVRi will not change the WRi, if its
contents are different.
0
1
0
1
0
I3
I2
I1
I0
R3
R2
R1 R0
SCK
SDI
0
D6
D5D4
D3
D2
D1D0
CS
00
0
101
00
I3
I2
I1
I0
R3
R2
R1 R0
SCK
SDI
CS
00
SDO
0
D6
D5D4
D3
D2
D1D0
Don’t Care
0
ISL22429
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