參數資料
型號: UPD17147
廠商: NEC Corp.
英文描述: SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 小,通用4位單晶片微控制器
文件頁數: 48/102頁
文件大?。?/td> 408K
代理商: UPD17147
48
μ
PD17145(A1), 17147(A1), 17149(A1)
(1) Timing in successive mode (A/D conversion)
Figure 14-3. Timing in Successive Mode (A/D Conversion)
Caution
Sampling is performed eight times while A/D conversion is executed once.
If the analog input voltage changes heavily during A/D conversion, A/D conversion cannot
be performed accurately. To obtain an accurate conversion result, it is necessary to
minimize the changes in the analog input voltage during A/D conversion.
Remark
One sampling time = 14/f
x
(1.75
μ
s, at 8 MHz)
Sampling repeat cycle = 48/f
x
(6
μ
s, at 8 MHz)
Sampling capacitor capacitance = 100 pF (MAX.)
Sampling
Sampling
Sampling
ADCSTRT executed
ADCR read
Number of executed instructions (instruction cycle)
ADCSTRT
ADCEND
8-bit data
registerPrevious data
Initial value:80H
Highest 1 bit
determined
All 8 bits
determined
POKE
1
2
3
4
5
6
7
8
9
24
GET
Highest 2 bits
determined
相關PDF資料
PDF描述
UPD17149GT SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
UPD17149CTA1 SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
UPD17147CT SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
UPD17147CTA1 SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
UPD17149 SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
相關代理商/技術參數
參數描述
UPD17147CT 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
UPD17147CTA1 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
UPD17147GT 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
UPD17147GTA1 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS
UPD17149 制造商:NEC 制造商全稱:NEC 功能描述:SMALL, GENERAL-PURPOSE 4-BIT SINGLE-CHIP MICROCONTROLLERS