ADUC7021BCP62 datasheet(11/78 Pages) AD

Part #	ADUC7021BCP62

Description	Precision Analog Microcontroller 12-bit Analog I/O, ARM7TDMI MCU

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Preliminary Technical Data

ADuC702x Series

Rev. PrA | Page 11 of 78

Pin# ADuC702X

7020

7021

7022

Mnemonic

Type*

Function

24

23

XCLKO

O

Output to the crystal oscillator inverter

25

24

XCLKI

I

Input to the crystal oscillator inverter and input to the internal clock

generator circuits

26

25

P1.7/SPM7/PLAO[

0]

I/O

Serial Port Multiplexed:

General Purpose Input-Output Port 1.7 / UART / SPI / Programmable

Logic Array Output Element 0

27

26

P1.6/SPM6/PLAI[6]

I/O

Serial Port Multiplexed:

General Purpose Input-Output Port 1.6 / UART / SPI / Programmable

Logic Array Input Element 6

28

27

P1.5/SPM5/PLAI[5]

I/O

Serial Port Multiplexed:

General Purpose Input-Output Port 1.5 / UART / SPI / Programmable

Logic Array Input Element 5

29

28

P1.4/SPM4/PLAI[4]

I/O

Serial Port Multiplexed:

General Purpose Input-Output Port 1.4 / UART / SPI / Programmable

Logic Array Input Element 4

30

29

P1.3/SPM3/PLAI[3]

I/O

Serial Port Multiplexed:

General Purpose Input-Output Port 1.3/ UART / I2C1 /Programmable

Logic Array Input Element 3

31

30

P1.2/SPM2/PLAI[2]

I/O

Serial Port Multiplexed:

General Purpose Input-Output Port 1.2 / UART / I2C1 /Programmable

Logic Array Input Element 2

32

31

P1.1/SPM1/PLAI[1]

I/O

Serial Port Multiplexed:

General Purpose Input-Output Port 1.1 / UART / I2C0 / Programmable

Logic Array Input Element 1

33

32

P1.0/T1/SPM0/PLA

I[0]

I/O

Serial Port Multiplexed:

General Purpose Input-Output Port 1.0/ Timer 1 Input / UART / I2C0 /

Programmable Logic Array Input Element 0

34

-

P4.2/PLAO[10]

I/O

General Purpose Input-Output Port 4.2 / Programmable Logic Array

Output Element 10

35

34

33

VREF

I/O

2.5V internal Voltage Reference. Must be connected to a 0.47uF capacitor

when using the internal reference.

36

35

34

AGND

S

Analog Ground. Ground reference point for the analog circuitry

37

36

35

AVDD

S

3.3V Analog Power

* I = Input, O = Output, S = Supply.

- No pin assigned.

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