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参数资料
型号： S1C88862F0A0100
元件分类： 微控制器/微处理器
英文描述： MICROCONTROLLER, PQFP128
封装： PLASTIC, QFP-128
文件页数： 18/160页
文件大小： 1244K
代理商： S1C88862F0A0100
106
EPSON
S1C88832/88862 TECHNICAL MANUAL
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Sound Generator)
5.12.6 Control of sound generator
Table 5.12.6.1 shows the sound generator control bits.
Table 5.12.6.1 Sound generator control bits
BZON: 00FF44HD0
Controls the buzzer (BZ and BZ) signal output.
When "1" is written: Buzzer signal output ON
When "0" is written: Buzzer signal output OFF
Reading:
Valid
BZON is the output control register for buzzer
signal. When "1" is set to the register, the BZ (BZ)
signal is output from the output port terminal R50
(R51). When "0" is set, the R50 goes LOW (VSS) and
the R51 goes HIGH (VDD).
To output the BZ signal, "0" must always be set for
the data register R50D. The data register R51D does
not affect the BZ output.
At initial reset, BZON is set to "0" (output OFF).
The BZ signal can be output from R51 only when
the function is selected by mask option.
BZFQ0–BZFQ2: 00FF45HD0–D2
Selects the buzzer signal frequency.
Table 5.12.6.2 Buzzer frequency settings
BZFQ2
Buzzer frequency (Hz)
0
1
4096.0
3276.8
2730.7
2340.6
2048.0
1638.4
1365.3
1170.3
BZFQ1
0
1
0
1
BZFQ0
0
1
0
1
0
1
0
1
The buzzer frequency can be selected from among
the above 8 types that have divided the OSC1 clock.
At initial reset, this register is set at "0" (4096.0 Hz).
Address Bit
Name
SR R/W
Function
Comment
10
00FF44 D7
D6
D5
D4
D3
D2
D1
D0
–
BZSTP
BZSHT
SHTPW
ENRTM
ENRST
ENON
BZON
–
One-shot buzzer forcibly stop
One-shot buzzer trigger/status
One-shot buzzer duration width selection
Envelope attenuation time
Envelope reset
Envelope On/Off control
Buzzer output control
Constantry "0" when
being read
"0" when being read
*1
–
0
–
0
W
R/W
W
R/W
–
Forcibly stop
Busy
Trigger
125 msec
1 sec
Reset
On
–
No operation
Ready
No operation
31.25 msec
0.5 sec
No operation
Off
00FF45 D7
D6
D5
D4
D3
D2
D1
D0
–
DUTY2
DUTY1
DUTY0
–
BZFQ2
BZFQ1
BZFQ0
–
Buzzer signal duty ratio selection
–
Buzzer frequency selection
"0" when being read
–
0
–
0
R/W
–
0
1
R
W
0
1
0
1
0
1
0
1
0
1
0
1
8/16
7/16
6/16
5/16
4/16
3/16
2/16
1/16
4096.0
2048.0
8/20
7/20
6/20
5/20
4/20
3/20
2/20
1/20
3276.8
1638.4
12/24
11/24
10/24
9/24
8/24
7/24
6/24
5/24
2730.7
1365.3
12/28
11/28
10/28
9/28
8/28
7/28
6/28
5/28
2340.6
1170.3
210
Buzzer frequency (Hz)
DUTY2–1
BZFQ2
0
1
BZFQ1
0
1
0
1
BZFQ0
0
1
0
1
0
1
0
1
Frequency (Hz)
4096.0
3276.8
2730.7
2340.6
2048.0
1638.4
1365.3
1170.3
*1 Reset to "0" during one-shot output.
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