ADUC7121BBCZ-RL Analog Devices Inc, ADUC7121BBCZ-RL Datasheet - Page 41

• Manufacturer Part Number: ADUC7121BBCZ-RL
• Description: PRECISION ANALOG MCU I.C
• Manufacturer: Analog Devices Inc
• Series: MicroConverter® ADuC7xxxr

Specifications of ADUC7121BBCZ-RL

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 41.78MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 126KB (63K x 16)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 9x12b, D/A 4x12b
• Oscillator Type: Internal
• Operating Temperature: -10°C ~ 95°C
• Package / Case: 108-LFBGA, CSPBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ADUC7121BBCZ-RL; ADUC7121BBCZ-RLTR

OTHER ANALOG PERIPHERALS
DIGITAL-TO-ANALOG CONVERTERS
The ADuC7121 incorporates four buffered 12-bit voltage output
string digital-to-analog converters (DACs) on chip. Each DAC has
a rail-to-rail voltage output buffer capable of driving 5 kΩ/100 pF.
Each DAC has three selectable ranges: 0 V to V
band gap 2.5 V reference), 0 V to AV
INT_REF
DAC_REBUF
+
–
EXT_REF
UCLK
AV
DD
TIMER1
HCLK
16/32
DIV
DD
STRING
DAC
, and 0 V to EXT_REF
SW_D0
SW_A0
INTERPOLATOR
DATA_REG
16
REF
(internal
SW_C0
DAC_BUF
SW_B0
12
Figure 28. DAC User Functionality
Figure 27. DAC Configuration
12
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. . . . . .
. . . . . .
DAC0
INT_REF
STRING
DAC
(see Figure 27). The signal range is 0 V to AV
DAC can also operate in interpolation mode.
MMR Interfaces
Each DAC is independently configurable through a control
register and a data register. These two registers are identical for
the 12 DACs. Only DAC0CON and DAC0DAT are described in
detail in this section.
DAC_REBUF
+
–
EXT_REF
SW_C
AV
DD
DAC_BUF
SW_B
STRING
DAC
SW_D11
SW_A12
DACOUT
SW_C11
DAC_BUF
SW_B11
DD
. Note that the
ADuC7121
DAC12