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參數(shù)資料
| 型號(hào)： | S1C62920D |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 1.3 MHz, MICROCONTROLLER, UUC63 |
| 封裝： | DIE-63 |
| 文件頁數(shù)： | 25/78頁 |
| 文件大?。?/td> | 874K |
| 代理商： | S1C62920D |
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S1C62920 TECHNICAL MANUAL
EPSON
23
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Output Ports)
BZ (R03)
BZ is the buzzer signal output for driving the piezo-electric buzzer, and the BZ output can be selected by
the mask option.
When BZ output has been set, turning the BZ signal ON and OFF can be controlled using the R03 register.
When the R03 register is set to "1", the BZ signal is output from the R03 terminal. When "0" is set, the R03
terminal goes low level (VSS).
The buzzer frequency can be selected as 2,048 Hz or 4,096 Hz by the mask option.
Note: A hazard may occur when the BZ signal is turned ON or OFF.
Figure 4.5.3.2 shows the output waveform of BZ.
R03 register
BZ output (R03)
01
0
Fig. 4.5.3.2 Output waveform of BZ
4.5.4 Programming notes
(1) When BZ and FOUT are selected, a hazard may be observed in the output waveform when the data of
the output register changes.
(2) When selecting fOSC3 as the FOUT clock frequency, it is necessary to control the OSC3 oscillation circuit.
See Section 4.3, "Oscillation Circuit" for details of the control.
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