參數(shù)資料
型號: μPD78070AY
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 24/72頁
文件大?。?/td> 524K
代理商: ΜPD78070AY
μ
PD78070AY
24
5.5
Buzzer Output Control Circuit
This circuit can output clocks of the following frequencies that can be used for driving buzzers:
1.2 kHz/2.4 kHz/4.9 kHz/9.8 kHz (at main system clock frequency of 5.0 MHz)
Figure 5-8. Buzzer Output Control Circuit Block Diagram
5.7
D/A Converter
The D/A converter consists of two 8-bit resolution channels.
The conversion method is the R-2R resistor ladder method.
5.6
A/D Converter
The A/D converter consists of eight 8-bit resolution channels.
A/D conversion can be started by the following two methods:
Hardware starting
Software starting
Figure 5-9. A/D Converter Block Diagram
S
Output Control
Circuit
BUZ/P36
f
XX
/2
9
f
XX
/2
10
f
XX
/2
11
INTP3/P03
T
ANI0/P10
ANI2/P12
ANI3/P13
ANI4/P14
ANI5/P15
ANI6/P16
ANI7/P17
ANI1/P11
AV
DD
AV
REF0
AV
SS
INTAD
INTP3
Series Resistor String
S
Sample & Hold Circuit
Voltage Comparator
Successive Approximation
Register (SAR)
Edge
Detector
Control
Circuit
A/D Conversion Result
Register (ADCR)
Internal Bus
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μPD78074B 8 Bit Single Chip Microcontrollers(8位單片微控制器)
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