C515C_9711 Datasheet, PDF (217/268 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

Power Saving Modes
C515C
Special Function Register PCON1 (Mapped Addr. 88H) Reset Val. C515C-8R : 0XXXXXXXB
Reset Val. C515C-8E : 0XX0XXXXB
Bit No. MSB
LSB
7
6
5
4
3
2
1
0
88H EWPD –
–
WS
–
–
–
– PCON1
Symbol
EWPD
WS
–
Function
External wake-up from power down enable bit
Setting EWPD before entering power down mode, enables the external wake-
up from power down mode capability via the pin P3.2/INT0 (more details see
section 9.2).
Wake-up from software power down mode source select
WS = 0 : wake-up via pin P3.2/INT0 selected (default after reset)
WS = 1 : wake-up via pin P4.7/RXDC selected
Reserved bits for future use.
Semiconductor Group
9-2
1997-11-01