參數(shù)資料
型號： M38B43M9H-XXXXFP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機
文件頁數(shù)： 58/78頁
文件大?。?/td> 1214K
代理商： M38B43M9H-XXXXFP
58
38B4 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
BUZZER OUTPUT CIRCUIT
The 38B4 group has a buzzer output circuit. One of 1 kHz, 2 kHz and
4 kHz (at X
IN
= 4.19 MHz) frequencies can be selected by the buzzer
output control register (address 0EFD
16
). Either P4
3
/B
UZ01
or P2
0
/
B
UZ02
/FLD
0
can be selected as a buzzer output port by the output
port selection bits (b2 and b3 of address 0EFD
16
).
The buzzer output is controlled by the buzzer output ON/OFF bit
(b4).
Fig. 66 Block diagram of buzzer output circuit
Fig. 67 Structure of buzzer output control register
f(
X
I
N
)
1
1
1
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