SM59R02G1 Datasheet, PDF (50/57 Pages) SyncMOS Technologies,Inc – Instruction-set compatible with MCS-51

SM59R02G1
8-Bit Micro-controller
8KB with ISP Flash
& 256B RAM embedded
11. Power Management Unit
Power management unit serves two power management modes, IDLE and STOP, for the users to do power saving
function.
Mnemonic: PCON
Address: 87h
7
6
5
4
3
2
1
0
Reset
SMOD
-
-
-
-
-
STOP IDLE 40h
STOP: Stop mode control bit. Setting this bit turning on the Stop Mode.
Stop bit is always read as 0
IDLE: Idle mode control bit. Setting this bit turning on the Idle Mode.
Idle bit is always read as 0
11.1. Idle mode
Setting the IDLE bit of PCON register invokes the IDLE mode. The IDLE mode leaves internal clocks and peripherals
running. Power consumption drops because the CPU is not active. The CPU can exit the IDLE state with any interrupts or
a reset.
11.2. Stop mode
Setting the STOP bit of PCON register invokes the STOP mode. All internal clocking in this mode is turn off. The CPU will
exit this state from a no-clocked interrupt (external INT0/1) or WDT Interrupt or a reset (WDT, LVR) condition. Internally
generated interrupts (timer, serial port ...) have no effect on stop mode since they require clocking activity.
Specifications subject to change without notice contact your sales representatives for the most recent information.
ISSFD-M061
50
Ver.G SM59R02G1 09/2015