SAB-80C517A-M18 Просмотр технического описания (PDF) - Siemens AG

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SAB-80C517A-M18

High-Performance 8-Bit CMOS Single-Chip Microcontroller

Siemens AG 

SAB 80C517A/83C517A-5

Pin Definitions and Functions (cont’d)

Symbol

Pin Number

I/O *) Function

P-LCC-84 P-MQFP-100-2

RESET

10

73

V AREF

11

78

I

RESET

A low level on this pin for the duration of

one machine cycle while the oscillator is

running resets the SAB 80C517A. A

small internal pull-up resistor permits

power-on reset using only a capacitor

connected to VSS.

Reference voltage for the A/D con-

verter.

V AGND

12

79

Reference ground for the A/D

converter.

P7.7 -P7.0 13 - 20

80 - 87

I

Port 7

is an 8-bit unidirectional input port. Port

pins can be used for digital input, if

voltage levels meet the specified input

high/low voltages, and for the lower 8-

bit of the multiplexed analog inputs of

the A/D converter, simultaneously.

* I = Input

O = Output

Semiconductor Group

8

1994-05-01

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