參數(shù)資料
型號(hào): S1C60L02F
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 0.08 MHz, MICROCONTROLLER, PQFP60
封裝: PLASTIC, QFP6-60
文件頁(yè)數(shù): 52/102頁(yè)
文件大?。?/td> 674K
代理商: S1C60L02F
S1C60N02 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 S1C60N02 Series has a CR oscillation type A/D con-
verter. This A/D converter is equipped with two CR oscilla-
tion 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 fre-
quency 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
TH
RS
CS
RS
TH
VSS
ADOUT
VSS
CAD
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