ADUC7126 Analog Devices, ADUC7126 Datasheet - Page 19

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ADUC7126

Manufacturer Part Number
ADUC7126
Description
Precision Analog Microcontroller, 12-Bit Analog I/O, Large Memory, ARM7TDMI MCU with Enhanced IRQ Handler
Manufacturer
Analog Devices
Datasheet

Specifications of ADUC7126

Mcu Core
ARM7 TDMI
Mcu Speed (mips)
40
Gpio Pins
40
Adc # Channels
16
Other
PWM

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Pin No.
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Mnemonic
DAC0/ADC12
DAC1/ADC13
DAC2/ADC14
DAC3/ADC15
TMS
TDI
P0.1/PWM4/BLE
XCLKO
XCLKI
BM/P0.0/CMP
DGND
LV
IOV
IOGND
P4.6/AD14/PLAO[14]
P4.7/AD15/PLAO[15]
P0.6/T1/MRST/PLAO[3]/MS3
TCK
TDO
P0.2/PWM5/BHE
P3.0/AD0/PWM0/PLAI[8]
P3.1/AD1/PWM1/PLAI[9]
P3.2/AD2/PWM2/PLAI[10]
DD
DD
OUT
/PLAI[7]/MS0
Description
DAC0 Voltage Output (DAC0).
Single-Ended or Differential Analog Input 12 (ADC12).
DAC1 Voltage Output (DAC1).
Single-Ended or Differential Analog Input 13 (ADC13).
DAC2 Voltage Output (DAC2).
Single-Ended or Differential Analog Input 14 (ADC14).
DAC3 Voltage Output (DAC3).
Single-Ended or Differential Analog Input 15 (ADC15).
JTAG Test Port Input, Test Mode Select. Debug and download access.
JTAG Test Port Input, Test Data In. Debug and download access.
General-Purpose Input and Output Port 0.1 (P0.1).
PWM Phase 4 (PWM4).
External Memory Byte Low Enable ( BLE).
Output from the Crystal Oscillator Inverter.
Input to the Crystal Oscillator Inverter and Input to the Internal Clock Generator
Circuits.
Multifunction I/O Pin.
Boot Mode Entry Pin (BM). The ADuC7126 enters UART download mode if BM is low at
reset and executes code if BM is pulled high at reset through a 1 kΩ resistor.. The
ADuC7126 enters I
flash address of 0x800014 = 0xFFFFFFFFF. The ADuC7126 executes code if BM is pulled
high at reset or if BM is low at reset with a flash address 0x800014 ≠ 0xFFFFFFFFF.
General-Purpose Input and Output Port 0.0 (P0.0).
Voltage Comparator Output/Programmable Logic Array Input Element 7 (CMP
External Memory Select 0 (MS0). By default, this pin is configured as GPIO.
Ground for Core Logic.
2.6 V Output of the On-Chip Voltage Regulator. This output must be connected to a 0.47
µF capacitor to DGND only.
3.3 V Supply for GPIO and Input of the On-Chip Voltage Regulator.
Ground for GPIO. Typically connected to DGND.
General-Purpose Input and Output Port 4.6 (P4.6).
External Memory Interface (AD14).
Programmable Logic Array Output Element 14 (PLAO[14]).
General-Purpose Input and Output Port 4.7 (P4.7).
External Memory Interface (AD15).
Programmable Logic Array Output Element 15 (PLAO[15]).
Multifunction Pin, Driven Low After Reset.
General-Purpose Output Port 0.6 (P0.6).
Timer1 Input (T1).
Power-On Reset Output (MRST).
Programmable Logic Array Output Element 3 (PLAO[3]).
External Memory Select 3 (MS3).
JTAG Test Port Input, Test Clock. Debug and download access.
JTAG Test Port Output, Test Data Out. Debug and download access.
General-Purpose Input and Output Port 0.2 (P0.2).
PWM Phase 5 (PWM5).
External Memory Byte High Enable ( BHE).
General-Purpose Input and Output Port 3.0 (P3.0).
External Memory Interface (AD0).
PWM Phase 0 (PWM0).
Programmable Logic Array Input Element 8 (PLAI[8]).
General-Purpose Input and Output Port 3.1 (P3.1).
External Memory Interface (AD1).
PWM Phase 1 (PWM1).
Programmable Logic Array Input Element 9 (PLAI[9]).
General-Purpose Input and Output Port 3.2 (P3.2).
External Memory Interface (AD2).
PWM Phase 2 (PWM2).
Programmable Logic Array Input Element 10 (PLAI[10]).
Rev. B | Page 19 of 104
2
C download mode in I
2
C version parts if BM is low at reset with a
ADuC7124/ADuC7126
OUT
).

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