MEMORY MAPKS57C2308/P2308/C2316/P2316

BMOD — Basic Timer Mode Register

F85H

Bit

Identifier

RESET Value

Read/Write

Bit Addressing

.3

3

2

1

0

.3

.2

.1

.0

 

 

 

 

0

0

0

0

W

W

W

W

1/4

4

4

4

Basic Timer Restart Bit

1

Restart basic timer, then clear IRQB flag, BCNT and BMOD.3 to logic zero

.2–.0

Input Clock Frequency and Signal Interrupt Interval Time Control Bits

 

0

0

0

Input clock frequency:

fxx/212 (1.02 kHz)

 

 

 

 

Interrupt interval time (wait time):

220/fxx (250 ms)

 

0

1

1

Input clock frequency:

fxx/29

(8.18 kHz)

 

 

 

 

Interrupt interval time (wait time):

217/fxx (31.3 ms)

 

1

0

1

Input clock frequency:

fxx/27

(32.7 kHz)

 

 

 

 

Interrupt interval time (wait time):

215/fxx (7.82 ms)

 

1

1

1

Input clock frequency:

fxx/25

(131 kHz)

 

 

 

 

Interrupt interval time (wait time):

213/fxx (1.95 ms)

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

Page 48
Image 48
Samsung KS57C2308 manual Bmod Basic Timer Mode Register, Bit Identifier, Read/Write Bit Addressing Basic Timer Restart Bit