Abov MC96F6432A, User Manual

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MC96F6432A ABOV Semiconductor Co., Ltd.
11.2.4 Basic Interval Timer Register Description
The basic interval timer register consists of basic interval timer counter register (BITCNT) and basic interval timer
control register (BITCR). If BCLR bit is set to
‘1’, BITCNT becomes ‘0’ and then counts up. After 1 machine cycle,
BCLR bit is cleared to
‘0’ automatically.
11.2.5 Register Description for Basic Interval Timer
BITCNT (Basic Interval Timer Counter Register): 8CH
7 6 5 4 3 2 1 0
BITCNT7 BITCNT6 BITCNT5 BITCNT4 BITCNT3 BITCNT2 BITCNT1 BITCNT0
R R R R R R R R
Initial value: 00H
BITCNT[7:0] BIT Counter
BITCR (Basic Interval Timer Control Register): 8BH
7 6 5 4 3 2 1 0
BITIFR BITCK1 BITCK0
–
BCLR BCK2 BCK1 BCK0
R/W R/W R/W
–
R/W R/W R/W R/W
Initial value: 01H
BITIFR
When BIT Interrupt occurs, this bit becomes
‘1’. For clearing bit, write ‘0’ to this bit or
auto clear by INT_ACK signal. Writing
“1” has no effect.
0 BIT interrupt no generation
1 BIT interrupt generation
BITCK[1:0]
Select BIT clock source
BITCK1 BITCK0 Description
0 0 fx/4096
0 1 fx/1024
1 0 fx/128
1 1 fx/16
BCLR If this bit is written to
‘1’, BIT Counter is cleared to ‘0’
0 Free Running
1 Clear Counter
BCK[2:0]
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)