參數(shù)資料
型號(hào): S1C60L05D
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 0.08 MHz, MICROCONTROLLER, UUC53
封裝: DIE-53
文件頁(yè)數(shù): 54/104頁(yè)
文件大?。?/td> 697K
代理商: S1C60L05D
S1C60N05 TECHNICAL MANUAL
EPSON
45
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (A/D Converter)
Configuration of A/D
converter
4.8
Fig. 4.8.1
Configuration of
A/D converter
A/D Converter
The S1C60N05 Series has a CR oscillation type A/D
converter with two input channels. This A/D converter is
equipped with two CR oscillation circuit systems and a
counter that measures their oscillation frequency. Counted
values represent connected resistance values converted into
digital values. Connect a reference resistance that does not
change oscillation frequency according to temperature
between the RS and CS terminals and a sensor that does
change resistance values according to temperature between
the TH and CS terminals. Then, oscillate them alternately.
The difference in the counted value can be evaluated as the
difference between the respective oscillation frequencies.
Therefore, various sensor circuit such as a temperature-
measuring circuit using a thermistor can be easily created,
for example.
The configuration of the A/D converter is shown in Figure
4.8.1.
Tr2
Multiplying
circuit
Interrupt
request
OSC1
clock
32 kHz or 65 kHz
TC15
–TC12
TC11
–TC8
TC7
–TC4
TC3
–TC0
Up/down counter
ADCLK
C15
–C12
C11
–C8
C7
–C4
C3
–C0
Start/Stop
ADRUN
Controller
Up-counter
Start/Stop
control
Up/Down
control
Data bus
Start/Stop
control
Interrupt
controller
IAD
EIAD
VDD
Tr1
Tr3
TH1
RS
CS
RS
TH1
TH2
VSS
ADOUT
Tr4
VDD
TH2
VSS
CAD
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