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TMP89FS60 Datasheet(PDF) 307 Page - Toshiba Semiconductor

Part # TMP89FS60
Description  8 Bit Microcontroller
PDF  410 Pages
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Manufacturer  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMP89FS60 Datasheet(HTML) 307 Page - Toshiba Semiconductor

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Page 293
TMP89FS60
RA001
20. 10-bit AD Converter (ADC)
The TMP89FS60 has a 10-bit successive approximation type AD converter.
20.1 Configuration
The circuit configuration of the 10-bit AD converter is shown in Figure 20-1.
It consists of control registers ADCCR1 and ADCCR2, converted value registers ADCDRL and ADCDRH, a DA
converter, a sample-hold circuit, a comparator, a successive comparison circuit, etc.
Figure 20-1 10-bit AD Converter
Note 1: Before using the AD converter, set an appropriate value to the I/O port register which is also used as an analog
input port. For details, see the section on "I/O ports".
Note 2: The DA converter current (IREF) is automatically cut off at times other than during AD conversion.
2
4
10
10
8
2
AINEN
R/2
R/2
R
ACK
AMD
AD converted value registers 1 and 2
AD converter control registers 1 and 2
INTADC
SAIN
n
Successive
approximation circuit
ADCCR2
ADCDRL
ADCDRH
ADCCR1
Sample-hold
circuit
A
S EN
Shift clock
DA converter
Input selector
Y
Reference
voltage
Analog
comparator
3
Control circuit
VSS
VAREF
AVDD
AIN0
AIN15



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