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TIMERS and TIMER/COUNTERS KS57C2308/P2308/C2316/P2316
11-24
8
Selector
Circuit
IRQW
fxt fxx/128
fw
(32.768 kHz)
MUX
fw/2
(256 Hz)
7
fw/2 (2Hz)
14
Enable/Disable
Clock
Selector
fx = Main System Clock (4.19 MHz)
fxt = Subsystem Clock (32.768 kHz)
fw = Watch Timer Frequency
fxx = System Clock
BUZ
WMOD.7
WMOD.6
WMOD.5
WMOD.4
WMOD.3
WMOD.2
WMOD.1
WMOD.0
P2.3 PM2
fw/8
(4 kHz)
fw/4
(8 kHz)
fw/2
(16 kHz)
Frequency
Dividing
Circuit
fw/2 (512 Hz)
6
fLCD
fw/16
(2 kHz)
Figure 11-4. Watch Timer Circuit Diagram