參數資料
型號: μPD780021
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: 24/64頁
文件大?。?/td> 487K
代理商: ΜPD780021
24
μ
PD780021, 780022, 780023, 780024
Preliminary Data Sheet
5.5 A/D Converter
An A/D converter of 8-bit resolution
×
8 channels is incorporated.
The following two types of the A/D conversion operation start-up methods are available.
Hardware start
Software start
Figure 5-8. Block Diagram of A/D Converter
Tap
selector
INTAD
AV
DD
INTP3
Internal bus
AV
REF
A/D conversion
result register (ADCR0)
Control
circuit
Succesive approximation
register (SAR)
Edge
detection
circuit
ANI0/P10
ANI1/P11
ANI2/P12
ANI3/P13
ANI4/P14
ANI5/P15
ANI6/P16
ANI7/P17
INTP3/ADTRG/P03
Selector
Sample & hold circuit
Voltage comparator
Series resistor string
AV
SS
Edge
detection
circuit
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