Siemens EF 88H Series Manual de usuario descargar pdf (Pagina 47)

Semiconductor Group 5 - 12

On-Chip Peripheral Components

The following table 5-4 lists the SFR’s with their addresses and default values after reset which are

used in compare mode 2:

Table 5-4, Compare Mode 2, used SFR’s and their default Reset Value

The compare registers COMSET and COMCLR have their dedicated interrupt vectors. The

corresponding request flags are ICS for register COMSET and ICR for register COMCLR. The flags

are set by a match in registers COMSET and COMCLR, when enabled. As long as the match

condition is valid the request flags can’t be reset (neither by hardware nor software). The request

flags are located in SFR CTCON.

Special Function Register CTCON

The default value of CTCON after reset is 0X00 0000B

SFR Address Default Value after Reset

COMSETL 0A1

COMSETH 0A2

COMCLRL 0A3

COMCLRH 0A4

SETMSK 0A5

CLRMSK 0A6

CTCON 0E1

0X00 0000

CC4EN 0C9

Bit Function

CLK0

CLK1

CLK2

CTF

Same function as SAB 80C517

ICS Interrupt request flag for Compare register COMSET. ICS is set when a compare

match occured. Cleared when interrupt is processed.

ICR Interrupt request flag for Compare register COMRES. ICR is set when a compare

match occured. Cleared when interrupt is processed.

T2PS1 Prescaler select bit for Timer 2. See table 5-5

76543210

MSB LSBBit No.

CTCON0BA

T2PS1

–

ICR ISC CTF CLK2 CLK1 CLK0

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Siemens EF 88H Series Manual de usuario Pagina 47