Q67120-C722 查看數據表（PDF） - Siemens AG

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Q67120-C722

High-Performance 8-Bit CMOS Single-Chip Microcontroller

Siemens AG 

SAB 80C517/80C537

Pin Definitions and Functions (cont’d)

Symbol

Pin Number

I/O *) Function

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

RESET

10

73

VAREF

11

VAGND

12

P7.7 -P7.0 13 - 20

78

79

80 - 87

* I = Input

O = Output

I

RESET

A low level on this pin for the duration of

one machine cycle while the oscillator is

running resets the SAB 80C517. 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.

Reference ground for the A/D

converter.

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.

Semiconductor Group

7

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