32
8Bit Single Chip Microcontroller
DMC73C168
8) BEEP REGISTER
PF NAME : BEEP
R/W
: BEEP CONTROL REGISTER
BIT 7
T250MS T125MS T100MS T5MS
NOT USED WTSL1 WTSLO TFEN
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
P50
READ
TFEN
BPEN FSEL1 FSEL0
>0132
WRITE
RESET VALUE
** CAUTION 1 "TFEN" bit must be set "1" before HALT mode.
Base clock
O
O
O
O
O
O
O
O
(1 KHz)
TFEN
T5MS
5mS
read
T250MS, T125MS, T100MS, T5MS : Interval timer flag bits.
read
This read bits is set by warm-up timer after 250ms, 125ms, 100ms, and 5ms respectively after
"TFEN" bit is set.
These flags are cleared by read operations.
WTSLn
:
Warm-up time select bits
WTSL1 WSTL0 WARM-UP TIME
0
0
1
1
0
1
0
1
25 ms
50 ms
100 ms
NO USE
TFEN
BPEN
:
:
Warm-up timer enable bit.
This read/write bit determines warm-up timer is enabled or not
0 = Warm-up timer is disabled.
1 = Warm-up timer is enabled.
0 = Beep out disable
1 = Beep out enable
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