Configuration Of 8-/10-Bit A/D Converter; Fig. 19.1 Block Diagram Of 8-/10-Bit A/D Converter - Fujitsu MB90420/5 (A) Series Hardware Manual

MB90420/5 (A) SERIES F

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
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
16-bit reload timer 1
2
MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
MPX
Sample & Hold circuits
Timer start
Trigger start
P50/ADTG
φ

Fig. 19.1 Block Diagram of 8-/10-bit A/D Converter

AV
CC
D/A converter
Sequential comparison
Comparator
A/D data register
ADCRH, L
A/D control status register 0 (higher)
A/D status register 1 (lower)
Prescaler
19-4
AVRH
AV
SS
register
ADCSH, L
Operation clock