C508_01 Datasheet, PDF (238/267 Pages) Infineon Technologies AG – 8-Bit CMOS Microcontroller

C508
Power Saving Modes
Symbol
GF0
PDE
IDLE
Function
General purpose flag 0
Power-Down Enable bit
When set, starting of the power down is enabled
IDLe mode Enable bit
When set, starting of the idle mode is enabled
Special Function Register PCON1
(Mapped Address 88_H)
Reset Value: 0XX0XXXX_B
Bit No. MSB
LSB
7
6
5
4
3
2
1
0
88_H 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 (more details see
Chapter 9.4.2).
Wake-up from power-down source Select
WS = 0: wake-up via pin P3.2/INT0.
WS = 1: wake-up via pin P5.7/INT7.
Pin P3.2/INT0 is selected as the default wake-up source after reset.
Reserved bits for future use. Read by CPU returns undefined values.
User’s Manual
9-2
2001-05