S3CK215 Datasheet, PDF (146/245 Pages) Samsung semiconductor – CalmRISC 8-Bit CMOS Microcontroller

S3CK215/FK215
Stop Release
INT
CLOCK CIRCUIT
Stop Release
INT
Main-System
Oscillator
Circuit
Stop
OSCCON.3
OSCCON.0
fx
fxt
Selector 1
Sub-System
Oscillator
Circuit
Watch Timer
LCD Controller
fxx
1/1 - 1/4096
Frequency
Dividing
Circuit
1/1 1/2 1/4 1/8 1/16 1/32 1/64 1/128
Stop
OSCCON.2
Basic Timer,
Timer/Counter 0,1,2,3
Watch Timer
LCD Controller
BLD
SIO
A/D Converter
D/A Converter
Amplifiers
PCON.2 - .0
SYS #05H Idle
SYS #0AH Stop
Selector 2
Oscillator
Control
Circuit
CPU Stop Signal
by Idle or Stop
Figure 8-4. System Clock Circuit Diagram
CPU
8-3