參數(shù)資料
型號： S1C88848D0A0100
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.2 MHz, MICROCONTROLLER, UUC192
封裝： DIE-192
文件頁數(shù)： 22/174頁
文件大?。?/td> 1304K
代理商： S1C88848D0A0100
110
EPSON
S1C88848 TECHNICAL MANUAL
5 PERIPHERAL CIRCUITS AND THEIR OPERATION (Sound Generator)
DUTY0–DUTY2: 00FF45HD4–D6
Selects the duty ratio of the buzzer signal.
Table 5.12.6.3 Duty ratio settings
ENRST: 00FF44HD2
Resets the envelope.
When "1" is written: Reset
When "0" is written: No operation
Reading:
Always "0"
The envelope is reset by writing "1" to ENRST and
the duty ratio returns to level 1 (maximum).
Writing "0" to ENRST and writing "1" when an
envelope has not been added become invalid. Since
ENRST is exclusively for writing, it always becomes
"0" during reading.
ENON: 00FF44HD1
Controls the addition of an envelope to the buzzer
signal.
When "1" is written: ON
When "0" is written: OFF
Reading:
Valid
By writing "1" to ENON, an envelope can be added
to buzzer signal output. When "0" is written, an
envelope is not added and the buzzer signal is fixed
at the duty ratio selected in DUTY0–DUTY2.
At initial reset and when "1" is written to BZSHT,
ENON is set to "0" (OFF).
ENRTM: 00FF44HD3
Selects the envelope attenuation time that is added
to the buzzer signal.
When "1" is written: 1.0 sec
(125 msec
× 7 = 875 msec)
When "0" is written: 0.5 sec
(62.5 msec
× 7 = 437.5 msec)
Reading:
Valid
The attenuation time of the digital envelope is
determined by the time for changing the duty ratio.
The duty ratio is changed in 125 msec (8 Hz) units
when "1" is written to ENRTM and in 62.5 msec (16
Hz) units, when "0" is written.
This setting becomes invalid when an envelope has
been set to OFF (ENON = "0").
At initial reset, ENRTM is set to "0" (0.5 sec).
SHTPW: 00FF44HD4
Selects the output duration width of the one-shot
buzzer.
When "1" is written: 125 msec
When "0" is written: 31.25 msec
Reading:
Valid
The one-shot buzzer output duration width is set to
125 msec when "1" is written to SHTPW and 62.5
msec, when "0" is written.
At initial reset, SHTPW is set to "0" (31.25 msec).
The buzzer sound level can be adjusted by selecting the duty ratio from among the
above 8 types. However, when the envelope has been set to ON (ENON = "1"), this
setting becomes invalid.
At initial reset, this register is set to "0" (level 1).
Level
Level 1 (Max)
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8 (Min)
12/28
11/28
10/28
9/28
8/28
7/28
6/28
5/28
4096.0
2048.0
3276.8
1638.4
2730.7
1365.3
2340.6
1170.3
DUTY0
DUTY2
DUTY1
8/20
7/20
6/20
5/20
4/20
3/20
2/20
1/20
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
12/24
11/24
10/24
9/24
8/24
7/24
6/24
5/24
0
1
0
1
Duty ratio by buzzer frequencies (Hz)
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