SN8P2614 Datasheet, PDF (48/99 Pages) SONiX Technology Company – 8-Bit Micro-Controller

SN8P2614 Series
8-Bit Micro-Controller
4.3 OSCM REGISTER
The OSCM register is an oscillator control register. It controls oscillator status, system mode.
0CAH
OSCM
Read/Write
After reset
Bit 7
0
-
-
Bit 6
0
-
-
Bit 5
0
-
-
Bit 4
CPUM1
R/W
0
Bit 3
CPUM0
R/W
0
Bit 2
CLKMD
R/W
0
Bit 1
STPHX
R/W
0
Bit 1
STPHX: External high-speed oscillator control bit.
0 = External high-speed oscillator free run.
1 = External high-speed oscillator free run stop. Internal low-speed RC oscillator is still running.
Bit 2
CLKMD: System high/Low clock mode control bit.
0 = Normal (dual) mode. System clock is high clock.
1 = Slow mode. System clock is internal low clock.
Bit[4:3]
CPUM[1:0]: CPU operating mode control bits.
00 = normal.
01 = sleep (power down) mode.
10 = green mode.
11 = reserved.
Bit 0
0
-
-
¾ Example: Stop high-speed oscillator
B0BSET FSTPHX
; To stop external high-speed oscillator only.
¾ Example: When entering the power down mode (sleep mode), both high-speed oscillator and internal
low-speed oscillator will be stopped.
B0BSET FCPUM0
; To stop external high-speed oscillator and internal low-speed
; oscillator called power down mode (sleep mode).
SONiX TECHNOLOGY CO., LTD
Page 48
Preliminary Version 0.3