M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 238

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

A-D CONVERTER
8.6 Repeat mode
Fig. 8.6.1 Initial setting example of repeat mode
8–18
Note : Write the each bit (except bit 6) of the A-D control regiter when the A-D conversion stops (before
trigger occurs).
b7
A-D control register
b7
Port P7 direction register
b7
Set A-D conversion start bit to “1”
0
Selecting internal trigger
1
0 1
7702/7703 Group User’s Manual
b0
Operation start
b0
Trigger occur
b0
b2
Repeat mode
0 : Internal trigger
1 : External triggeer
A-D conversion start bit
0: Stop A-D conversion
A-D conversion frequency (
select bit
0 : f
1 : f
Trigger select bit
0 0 0 : AN
0 0 1 : AN
0 1 0 : AN
0 1 1 : AN
1 0 0 : AN
1 0 1 : AN
1 1 0 : AN
1 1 1 : AN
Analog input select bits
A-D control register (address 1E
AN
AN
AN
AN
AN
AN
AN
AN
Port P7 direction register (address 11
b1 b0
2
2
A-D control register (address 1E
A-D conversion start bit
0
1
2
3
4
5
6
7
divided by 4
divided by 2
Selecting external trigger
Set the bits corresponding
to analog input pins to “0.”
Set bit 7 to “0” when
selecting external trigger.
0
1
2
3
4
5
6
7
selected
selected
selected
selected
selected
selected
selected
selected
Input falling edge to
AD
TRG
AD
16
)
)
16
pin
16
)
)