MB90420/5 (A) SERIES F
2
MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
19-4
19.2 Configuration of 8-/10-bit A/D Converter
The 8-/10-bit A/D converter consists of following nine blocks.
•
A/D control status register (ADCS)
•
A/D data register (ADCR)
•
Decoder
•
Analog channel selector
•
Sample hold circuit
•
D/A converter
•
Comparator
•
Controller
n
Block diagram of 8-/10-bit A/D converter
Fig. 19.1 Block Diagram of 8-/10-bit A/D Converter
Input circuit
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
MPX
D/A converter
A/D data register
Decoder
A/D control status register 0 (higher)
A/D status register 1 (lower)
Prescaler
Comparator
Sample & Hold circuits
AV
CC
AVRH
AV
SS
ADCRH, L
ADCSH, L
16-bit reload timer 1
P50/ADTG
φ
Operation clock
F
MC-16LX bus
Sequential comparison
register
Timer start
Trigger start
Содержание MB90420/5 (A) Series
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