ADUC7121 Analog Devices, ADUC7121 Datasheet - Page 55

• Manufacturer Part Number: ADUC7121
• Description: Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI MCU
• Manufacturer: Analog Devices

Specifications of ADUC7121

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 8192Bytes
• Gpio Pins: 32
• Adc # Channels: 9

Table 74. GPxCON MMR Bit Designations
Bit
31:30
29:28
27:26
25:24
23:22
21:20
19:18
17:16
15:14
13:12
11:10
9:8
7:6
5:4
3:2
1:0
GPxPAR Registers
The GPxPAR registers program the parameters for Port 0, Port 1,
Port 2, and Port 3. Note that the GPxDAT MMR must always be
written after changing the GPxPAR MMR.
Name:
Address:
Default value:
Access:
Name:
Address:
Default value:
Access:
Name:
Address:
Default value:
Access:
Name:
Address:
Default value:
Access:
Description
Reserved
Select function of the Px.7 pin
Reserved
Select function of the Px.6 pin
Reserved
Select function of the Px.5 pin
Reserved
Select function of the Px.4 pin
Reserved
Select function of the Px.3 pin
Reserved
Select function of the Px.2 pin
Reserved
Select function of the Px.1 pin
Reserved
Select function of the Px.0 pin
GP0PAR
0xFFFF0D2C
0x20000000
Read and write
GP1PAR
0xFFFF0D3C
0x00000000
Read and write
GP2PAR
0xFFFF0D4C
0x00000000
Read and write
GP3PAR
0xFFFF0D5C
0x00222222
Read and write
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Table 75. GPxPAR MMR Bit Designations
Bit
31:29
28
27:25
24
23:21
20
19:17
16
15:13
12
11:9
8
7:5
4
3:1
0
GPxDAT Register
GPxDAT is a Port x configuration and data register. It configures
the direction of the GPIO pins of Port x, sets the output value
for the pins configured as output, and receives and stores the
input value of the pins configured as inputs.
Name:
Address:
Default value:
Access:
Name:
Address:
Default value:
Access:
Name:
Address:
Default value:
Access:
Description
Reserved
Pull-up disable Px.7 pin
Set to 1 to enable the pull-up
Clear to 0 to disable the pull-up
Reserved
Pull-up disable Px.6 pin
Reserved
Pull-up disable Px.5 pin
Reserved
Pull-up disable Px.4 pin
Reserved
Pull-up disable Px.3 pin
Reserved
Pull-up disable Px.2 pin
Reserved
Pull-up disable Px.1 pin
Reserved
Pull-up disable Px.0 pin
GP0DAT
0xFFFF0D20
0x000000XX
Read and write
GP1DAT
0xFFFF0D30
0x000000XX
Read and write
GP2DAT
0xFFFF0D40
0x000000XX
Read and write
ADuC7121