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M 5 2 2 1 0 D E M O
U S E R
G U I D E
A U G U S T
2 1 ,
2 0 0 7
Potentiometer
A 5k ohm, single-turn, thumb-wheel type, potentiometer at RV1 provides continuous, variable
resistance input for user applications. The output is the result of a voltage divider that changes
as the thumb-wheel is turned. The potentiometer is connected between VDD and GND with
the center tap providing the divider output. This center tap is connected to the MCU on input
AN0. The potentiometer may be disconnected from AN0 by means of the POT_EN option
header.
Figure 13: POT_EN Option Header
?
?
ON
User POT enabled *
POT_EN
?
?
OFF
User POT disabled
POT_EN
* Default shipping configuration
I/O PORT CONNECTOR
Connector J1 provides access to M52210DEMO I/O signals. Signal positions not shown are
not connected (NC).
Figure 14: Connector J1
VDD
GND
UTXD1
URXD1
URTS1*
UCTS1*
AN2
AN3
QSPI_DOUT
QSPI_DIN
QSPI_SCK
QSPI_CS0
UTXD0
URXD0
URTS0*
UCTS0*
IRQ1*
VRH
VRL
IRQ7*
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
IRQ4*
RSTI*
RSTO*
NC
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
SCL
SDA
NC
NC
DTIN0
DTIN1
DTIN2
DTIN3
18
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相关代理商/技术参数
M52210DEMO 制造商:Freescale Semiconductor 功能描述:MCF5221X and MCF521XX ColdFire
M52211EVB 功能描述:开发板和工具包 - COLDFIRE KIRIN 0 FULL FEATURED EV RoHS:否 制造商:Freescale Semiconductor 产品:Development Kits 工具用于评估:MCF53017 核心:ColdFire V3 接口类型:Ethernet, UART, USB 工作电源电压:12 V
M52221DEMO 功能描述:开发板和工具包 - COLDFIRE MCF52221 DEMO BOARD RoHS:否 制造商:Freescale Semiconductor 产品:Development Kits 工具用于评估:MCF53017 核心:ColdFire V3 接口类型:Ethernet, UART, USB 工作电源电压:12 V
M52221DEMO 制造商:Freescale Semiconductor 功能描述:MCF52221 Demonstration Board
M52223EVB 功能描述:开发板和工具包 - COLDFIRE MCF52223 EVALUATION BOARD RoHS:否 制造商:Freescale Semiconductor 产品:Development Kits 工具用于评估:MCF53017 核心:ColdFire V3 接口类型:Ethernet, UART, USB 工作电源电压:12 V
M52223EVB 制造商:Freescale Semiconductor 功能描述:MCF52223 EVALUATION BOAR
M5222FP 制造商:Panasonic Industrial Company 功能描述:IC
M52230DEMO 功能描述:开发板和工具包 - COLDFIRE MCF52230 LOW COST EVALUA RoHS:否 制造商:Freescale Semiconductor 产品:Development Kits 工具用于评估:MCF53017 核心:ColdFire V3 接口类型:Ethernet, UART, USB 工作电源电压:12 V