Siemens EF 88H Series Bedienungsanleitung PDF herunterladen (Seite 100)

Device Specification

Semiconductor Group 7-38

Reload of Timer 2

A 16-bit reload can be performed with the 16-bit CRC register, which is a concatenation of the

8-bit registers CRCL and CRCH. There are two modes from which to select:

Mode 0: Reload is caused by a timer overflow (auto-reload).

Mode 1: Reload is caused in response to a negative transition at pin T2EX (P1.5),

which can also request an interrupt.

Timer/Counters 0 and 1

These timer/counters are fully compatible with timer/counter 0 or 1 of the SAB 8051 and can

operate in four modes:

Mode 0: 8-bit timer/counter with 32:1 prescaler

Mode 1: 16-bit timer/counter

Mode 2: 8-bit timer/counter with 8-bit auto reload

Mode 3: Timer/counter 0 is configured as one 8-bit timer;

timer/counter 1 in this mode holds its count.

External inputs INT0 and INT1 can be programmed to function as a gate for timer/counters

0 and 1 to facilitate pulse width measurements.

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Siemens EF 88H Series Bedienungsanleitung Seite 100