SM59D03G2 Datasheet, PDF (59/67 Pages) SyncMOS Technologies,Inc – 8-Bits Micro-controller

14 Power Management
SM59D03G2
8-Bits Micro-controller
8KB+ ISP Flash & 1KB RAM embedded
14.1 Idle Mode
The user can enter the idle mode by setting the IDLE bit in the PCON register. In the idle mode, the
internal clock to the CPU part is stopped but the clock still remains for the peripherals and the
interrupt logic continues. The CPU part will exit idle mode when either an interrupt or a reset occurs.
14.2 Power down mode
When the PD bit in the PCON register is set, the CPU enters the power-down mode as idle mode
does. But the peripherals are also stopped. To exit from power down mode is done by a hardware
reset or external interrupts.
14.3 SFR description
Mnemonic Description
PCON
Power Control
Direct Bit 7
87h SMOD
Bit 6 Bit 5 Bit 4
Power Management
-
-
-
Bit 3
GF1
Bit 2
GF0
Bit 1
PD
Bit 0 RESET
IDLE 00h
Mnemonic: PCON
7
6
5
SMOD
-
Address: 87h
4
3
2
1
0 Reset
GF1 GF0 PD IDLE 00h
GF1: General-purpose flag bit.
GF0: General-purpose flag bit.
PD: When set to “1”, the MCU will into Power-down mode.
IDLE: When set to “1”, the MCU will into IDLE mode.
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M030
59
Ver.C SM59D03G2 07/2009