GMS84512 Datasheet, PDF (36/123 Pages) Hynix Semiconductor – 8-BIT SINGLE CHIP MICROCOMPUTER

GMS 84512 / 84524
3.2 CLOCK GENERATION CIRCUIT
The clock generation circuit of GMS84512/84524 is consist of oscillation circuit for CPU clock, prescaler for
peripheral clock and Basic Interval Timer Clock. Basic Interval Timer for reference time, and water Dog
Timer for detecting S/W overrun.
OSC
Circuit
Clock Pulse Generator
Internal System Clock
ENPCK
PRESCALER (11)
8
MUX
0
7
Basic Interval Timer(8)
11 ^{PERIPHERAL CIRCUIT}
0
5
Watch Dog Timer(6)
IFBIT
WDTCL
BTCL
CKCTLR 0 1 2 3 4 5
6
8
6
COMPARATOR
6 WDTON
0
5
6
WDTR
WDT
CL
7
IFWDT
to RESET
CIRCUIT
Internal DATA BUS
FIG.3.2.1 Clock Generation Circuit Block Diagram
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