Z51F3220FNX Datasheet, PDF (107/312 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F3220
Product Specification
BITCR (Basic Interval Timer Control Register) : 8BH
7
6
5
4
BITIFR
BITCK1
BITCK0
–
R/W
R/W
R/W
–
3
BCLR
R/W
2
BCK2
R/W
1
BCK1
R/W
0
BCK0
R/W
Initial value : 01H
BITIFR
BITCK[1:0]
BCLR
BCK[2:0]
When BIT Interrupt occurs, this bit becomes ‘1’. For clearing bit, write ‘0’
to this bit or auto clear by INT_ACK signal.
0
BIT interrupt no generation
1
BIT interrupt generation
Select BIT clock source
BITCK1 BITCK0 Description
0
0
fx/4096
0
1
fx/1024
1
0
fx/128
1
1
fx/16
If this bit is written to ‘1’, BIT Counter is cleared to ‘0’
0
Free Running
1
Clear Counter
Select BIT overflow period
BCK2 BCK1 BCK0 Description
0
0
0
Bit 0 overflow (BIT Clock * 2)
0
0
1
Bit 1 overflow (BIT Clock * 4) (default)
0
1
0
Bit 2 overflow (BIT Clock * 8)
0
1
1
Bit 3 overflow (BIT Clock * 16)
1
0
0
Bit 4 overflow (BIT Clock * 32)
1
0
1
Bit 5 overflow (BIT Clock * 64)
1
1
0
Bit 6 overflow (BIT Clock * 128)
1
1
1
Bit 7 overflow (BIT Clock * 256)
PS029902-0212
PRELIMINARY
104