MB91350A Datasheet, PDF (75/111 Pages) Fujitsu Component Limited. – 32-Bit Proprietary Microcontroller

MB91350A Series
14. A/D Converter
(1) Description
The A/D converter converts the analog input voltage into a digital value. It has the following features:
• Conversion time: 1.48 µs minimum per channel
• Employing serial/parallel conversion type for sample & hold circuit
• 10-bit resolution (switchable between 8 and 10 bits)
• Program selection of the analog input from among 12 channels
• Conversion mode
Single conversion mode : Convert 1 selected channel
Scan conversion mode : Scan up to 4 channels.
• Converted data is stored in the data buffer.
• An interrupt request to the CPU can be generated upon completion of A/D conversion. The interrupt can be
used to start DMA transfer.
• The startup source can be selected from among software, external trigger (falling edge), and reload timer ch2
(rising edge).
(2) Register list
15
87
0
Control status register (ADCS2/ADSC1)
ADCS2
ADCS1
Conversion time setting resister (ADCT)
Converted data register 0 (ADTH0/ADTL0)
Converted data register 1 (ADTH1/ADTL1)
Converted data register 2 (ADTH2/ADTL2)
Converted data register 3 (ADTH3/ADTL3)
ADTH0
ADTH1
ADTH2
ADTH3
ADTL0
ADTL1
ADTL2
ADTL3
75