mb91307r Fujitsu Microelectronics, Inc., mb91307r Datasheet - Page 60

• Manufacturer Part Number: mb91307r
• Description: 32-bit Microcontroller Cmos Fr60 Mb91307 Series
• Manufacturer: Fujitsu Microelectronics, Inc.

60
MB91307 Series
7. A/D Converter (Sequential comparison type)
(1) Overview
(2) Register List
• Control status register (ADCS)
• Data register (ADCR)
This A/D converter is a module that coverts analog input voltages to digital values, and provides the following
features.
• Minimum conversion time
• Built-in sample & hold circuit
• Resolution
• Analog input: 4 channels by program selection
• DMA transfer start from interrupt enabled
• Start sources can be selected from software, external trigger (falling edge), reload timer (rising edge).
Single conversion mode: Conversion on 1 select channel
Scan conversion mode: Select continuous multiple channels. Up to 4 channels can be selected by program.
Continuous conversion mode: Continuous conversion on selected channel
Stop conversion mode: 1-channel conversion then pause and wait until the next start is applied
10 bits (8-bit accuracy)
bit
bit
bit
bit
BUSY
MD1
15
⎯
15
7
7
7
(enables synchronized conversion start)
MD0
5.4 µs/ch (at machine clock 33 MHz-CKLP)
INT
14
⎯
14
6
6
6
ANS2
INTE
13
⎯
13
5
5
5
ANS1
PAUS
12
12
4
⎯
4
4
ANS0
STS1
11
⎯
11
3
3
3
ANE2
STS0
10
⎯
10
2
2
2
ANE1
STRT
1
9
9
1
1
9
ANE0
⎯
8
0
0
8
0
8