Siemens EF 88H Series Manual de usuario descargar pdf (Pagina 69)

Device Specification

Semiconductor Group 7-7

Pin Definitions and Functions (cont’d)

Symbol Pin Number

I/O

Function

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

RESET 10 73 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 V

AREF

11 78 Reference voltage for the A/D con-

verter.

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

1 2 ... 64 65 66 67 68 69 70 71 72 73 74 ... 136 137

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Siemens EF 88H Series Manual de usuario Pagina 69