s3c72m9 Samsung Semiconductor, Inc., s3c72m9 Datasheet - Page 208
s3c72m9
Manufacturer Part Number
s3c72m9
Description
The S3c72m5/s3c72m7/s3c72m9 Single-chip Cmos Microcontroller Has Been Designed For High Performance Using Samsung S
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.S3C72M9.pdf
(382 pages)
- Current page: 208 of 382
- Download datasheet (2Mb)
OSCILLATOR CIRCUITS
F
1. Switch from the main system clock to the subsystem clock:
2. Switch from the subsystem clock to the main system clock:
6-8
MA2SUB BITS
DLY80
DEL1
SUB2MA BITR
PROGRAMMING TIP — Switching Between Main System and Subsystem Clock
CALL
BITS
RET
LD
NOP
NOP
DECS
JR
RET
CALL
BITR
RET
SCMOD.0
DLY80
SCMOD.3
A,#0FH
A
DEL1
SCMOD.3
DLY80
SCMOD.0
; Switches to subsystem clock
; Delay 80 machine cycles
; Stop the main system clock
; Start main system clock oscillation
; Delay 80 machine cycles
; Switch to main system clock
S3C72M5/C72M7/C72M9/P72M9 (Preliminary Spec)
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