参数资料
型号: MCP42050-I/P
厂商: Microchip Technology
文件页数: 13/28页
文件大小: 0K
描述: IC POT DGTL 50K 2CH SPI 14-DIP
标准包装: 30
接片: 256
电阻(欧姆): 50k
电路数: 2
温度系数: 标准值 800 ppm/°C
存储器类型: 易失
接口: 3 线串行(芯片选择)
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 通孔
封装/外壳: 14-DIP(0.300",7.62mm)
供应商设备封装: 14-PDIP
包装: 管件
产品目录页面: 676 (CN2011-ZH PDF)
其它名称: MCP42050-I/PR
MCP42050-I/PR-ND
MCP41XXX/42XXX
DS11195C-page 20
2003 Microchip Technology Inc.
FIGURE 5-4:
Daisy-Chain Configuration.
Microcontroller
SO
CS
SCK
SI
SO
CS
SCK
SI
CS
SCK
SI
CS
SCK
SO
Device 1
Device 2
Device 3*
If you want to load the following
command/data into each part
in the chain.
Device 1
XX10XX11
Device 2
XX01XX10
Device 3
XX10XX00
EXAMPLE:
Start by setting CS low and
clocking in the command and
data that will end up in Device
3 (16 clocks).
After 16 clocks, Device 2 and
Device 3 will both have all
zeros clocked in from the
previous part’s shift register.
Clock-In the command and
data for Device 2 (16 more
clocks). The data that was pre-
viously loaded gets shifted to
the next device on the chain.
After 32 clocks, Device 2 has
the data previously loaded
into Device 1 and Device 3
gets 16 more zeros.
Clock-In the data for Device 1
(16 more clocks). The data that
was previously loaded into
Device 1 gets shifted into
Device 2 and Device 3 contains
the first byte loaded. Raise the
CS line to execute the com-
mands for all 3 devices at the
same time.
After 48 clocks, all 3 devices
have the proper command/
data loaded into their shift
registers.
* Last device on a daisy-chain may be a single channel MCP41XXX device.
11001100
11110000
10101010
Device 1
XX10XX00
Device 2
00000000
Device 3
00000000
10101010
00000000
Device 1
XX01XX10
Device 2
XX10XX00
Device 3
00000000
11110000
10101010
00000000
Device 1
XX10XX11
Device 2
XX01XX10
Device 3
XX10XX00
11001100
11110000
10101010
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