ADUC7122 Analog Devices, ADUC7122 Datasheet - Page 43

• Manufacturer Part Number: ADUC7122
• Description: Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI® MCU
• Manufacturer: Analog Devices

Specifications of ADUC7122

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 8192Bytes
• Gpio Pins: 32
• Adc # Channels: 13

OTHER ANALOG PERIPHERALS
DAC
The ADuC7122 incorporates 12 buffered, 12-bit voltage output
string DACs on chip. Each DAC has a rail-to-rail voltage output
buffer capable of driving 5 kΩ/100 pF.
Each DAC has two selectable ranges: 0 V to V
gap 2.5 V reference) and 0 V to AV
range is 0 V to AV
Table 64. DACxCON Registers
Name
DAC0CON
DAC1CON
DAC2CON
DAC3CON
DAC4CON
DAC5CON
DAC6CON
DAC7CON
DAC8CON
DAC9CON
DAC10CON
DAC11CON
V
DD
REF
.
DAC_REBUF
TIMER1
Address
0xFFFF0580
0xFFFF0588
0xFFFF0590
0xFFFF0598
0xFFFF05A0
0xFFFF05A8
0xFFFF05B0
0xFFFF05B8
0xFFFF05C0
0xFFFF05C8
0xFFFF05D0
0xFFFF05D8
AVDD
HCLK
DD
. The maximum signal
STRING
DAC
REF
SW_D0
SW_A0
DATA_REG
(internal band
Figure 28. DAC User Functionality
SW_C0
Figure 27. DAC Configuration
DAC_BUF
SW_B0
V
REF
12
Rev. 0 | Page 43 of 96
STRING
DAC_REBUF
DAC
Default Value
0x100
0x100
0x100
0x100
0x100
0x100
0x100
0x100
0x100
0x100
0x100
0x100
DAC0
AVDD
MMRs Interface
Each DAC is independently configurable through a control
register and a data register. These two registers are identical
for the 12 DACs. DACxCON and DACxDAT (see Table 64 to
Table 67) are described in detail in this section.
SW_C
STRING
DAC
SW_D11
DAC_BUF
SW_B
SW_A12
SW_C11
DAC_BUF
SW_B11
DACx
DAC11
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
ADuC7122