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| 型号： | S1C63158D0A010P |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4-BIT, FLASH, 4 MHz, MICROCONTROLLER, UUC53 |
| 封装： | DIE-53 |
| 文件页数： | 15/159页 |
| 文件大小： | 1200K |
| 代理商： | S1C63158D0A010P |
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S1C63808 TECHNICAL MANUAL
EPSON
103
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Sound Generator)
SHTPW: One-shot buzzer pulse width setting register (FF6DHD0)
Selects the output time of the one-shot buzzer.
When "1" is written: 125 msec
When "0" is written: 31.25 msec
Reading: Valid
Writing "1" into SHTPW causes the one-short output time to be set at 125 msec, and writing "0" causes it
to be set to 31.25 msec. It does not affect normal buzzer output.
At initial reset, this register is set to "0".
BZSHT: One-shot buzzer trigger/status (FF6DHD1)
Controls the one-shot buzzer output.
When writing
When "1" is written: Trigger
When "0" is written: No operation
Writing "1" into BZSHT causes the one-short output circuit to operate and a buzzer signal to be output.
This output is automatically turned off after the time set by SHTPW has elapsed. The one-shot output is
only valid when the normal buzzer output is off (BZE = "0") and will be invalid when the normal buzzer
output is on (BZE = "1"). When a re-trigger is assigned during a one-shot output, the one-shot output time
set with SHTPW is measured again from that point (time extension).
When reading
When "1" is read: BUSY
When "0" is read: READY
During reading BZSHT shows the operation status of the one-shot output circuit. During one-shot
output, BZSHT becomes "1" and the output goes off, it shifts to "0".
At initial reset, this bit is set to "0".
BZSTP: One-shot buzzer stop (FF6DHD2)
Stops the one-shot buzzer output.
When "1" is written: Stop
When "0" is written: No operation
Reading: Always "0"
Writing "1" into BZSTP permits the one-shot buzzer output to be turned off prior to the elapsing of the
time set by SHTPW. Writing "0" is invalid and writing "1" is also invalid except during one-shot output.
This bit is dedicated for writing, and is always "0" for reading.
4.11.7 Programming notes
(1) When using the R01 port as the BZ output port, fix the data register R01 at "1" and the high imped-
ance control register R01HIZ at "0" (data output).
(2) Since it generates a buzzer signal that is out of synchronization with the BZE register, hazards may at
times be produced when the signal goes on/off due to the setting of the BZE register.
(3) The one-shot output is only valid when the normal buzzer output is off (BZE = "0") and will be invalid
when the normal buzzer output is on (BZE = "1").
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