SAB80C517 Datasheet, PDF (8/61 Pages) Siemens Semiconductor Group – 8-Bit CMOS Single-Chip Microcontroller

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
V_AREF
11
V_AGND
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 V_SS.
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