Samsung KS57C2308 Manual page 48

MEMORY MAP
BMOD
— Basic Timer Mode Register
Bit
Identifier
Value
RESET
Read/Write
Bit Addressing
.3
.2–.0
NOTES:
1. When a RESET occurs, the oscillator stabilization wait time is 31.3 ms (217/fxx) at 4.19 MHz.
2. "fxx" is the system clock rate given a clock frequency of 4.19 MHz.
4-6
3 2
.3 .2
0 0
W W
1/4 4
Basic Timer Restart Bit
1 Restart basic timer, then clear IRQB flag, BCNT and BMOD.3 to logic zero
Input Clock Frequency and Signal Interrupt Interval Time Control Bits
0 0 0 Input clock frequency:
Interrupt interval time (wait time):
0 1 1 Input clock frequency:
Interrupt interval time (wait time):
1 0 1 Input clock frequency:
Interrupt interval time (wait time):
1 1 1 Input clock frequency:
Interrupt interval time (wait time):
1 0
.1 .0
0 0
W W
4 4
KS57C2308/P2308/C2316/P2316
12
fxx/2 (1.02 kHz)
20
2 /fxx (250 ms)
9
fxx/2 (8.18 kHz)
17
2 /fxx (31.3 ms)
7
fxx/2 (32.7 kHz)
15
2 /fxx (7.82 ms)
5
fxx/2 (131 kHz)
13
2 /fxx (1.95 ms)
F85H