ADUC7121 Analog Devices, ADUC7121 Datasheet - Page 19

• 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

Pin No.
A6
A8
A7
C8
A5
C5
B4
A4
A1
A3
A2
B1
A12
A9
A11
A10
B12
B11
B10
B9
M1
M6
L1
M7
M12
B6
L12
C7
B7
G1
G12
F1
F12
H1
J1
H12
J12
G2
H2
F10
E10
1
A is analog, D is digital, I is input, O is output, and S is supply, NC is no connect.
Mnemonic
C
IDAC3
PVDD_IDAC3
C
IDAC2
PVDD_IDAC2
C
IDAC1
IDAC1
PVDD_IDAC1
PVDD_IDAC1
C
IDAC0
IDAC0
PVDD_IDAC0
PVDD_IDAC0
C
IDAC_TST
PGND
PGND
AGND
AGND
AVDD
AVDD
AGND
AGND
AVDD
AVDD
AVDD_IDAC
DVDD
DVDD
DGND
DGND
IOVDD
IOGND
IOVDD
IOGND
XTALO
XTALI
TCK
TMS
DAMP
DAMP
DAMP
DAMP
DAMP
_IDAC4
_IDAC3
_IDAC2
_IDAC1
_IDAC0
Type
AI
AO
S
AI
AO
S
AI
AO
AO
S
S
AI
AO
AO
S
S
AI
AI/O
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
DO
DI
DI
DI
1
Description
Damping Capacitor Pin for IDAC4.
IDAC3 Output. The maximum output for this pin is 45 mA.
2.0 V Power for IDAC3.
Damping Capacitor Pin for IDAC3.
IDAC2 Output. The maximum output for this pin is 80 mA.
2.0 V Power for the IDAC2.
Damping Capacitor for IDAC2.
IDAC1 Output. The maximum output is 200 mA.
IDAC1 Output. The maximum output is 200 mA.
Power for IDAC1.
Power for IDAC1.
Damping Capacitor for IDAC1.
IDAC0 Output. The maximum output is 250 mA.
IDAC0 Output. The maximum output is 250 mA.
Power for IDAC0.
Power for IDAC0.
Damping Capacitor Pin for IDAC0.
IDAC Test Purposes.
Power Ground.
Power Ground.
Analog Ground.
Analog Ground.
Analog Supply (3.3 V).
Analog Supply (3.3 V).
Analog Ground.
Analog Ground.
Analog Supply (3.3 V).
Analog Supply (3.3 V).
Output of 2.5 V LDO regulator for internal IDACs. A 470 nF capacitor to AGND must be
connected to this pin.
Output of 2.6 V On-Chip LDO Regulator. A 470 nF capacitor to DGND must be
connected to this pin.
Output of 2.6 V On-Chip LDO Regulator. A 470 nF capacitor to DGND must be
connected to this pin.
Digital Ground.
Digital Ground.
3.3 V GPIO Supply.
3.3 V GPIO Ground.
3.3 V GPIO Supply.
3.3 V GPIO Ground.
Crystal Oscillator Inverter Output. If an external crystal is not being used, this pin can
remain unconnected.
Crystal Oscillator Inverter Input and Internal Clock Generator Circuits Input. If an
external crystal is not being used, connect this pin to the DGND system ground.
JTAG Test Port Input, Test Clock. Debug and download access.
JTAG Test Port Input, Test Mode Select. Debug and download access.
Rev. 0 | Page 19 of 96
ADuC7121