M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 235

• 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

Fig. 8.5.1 Initial setting example of one-shot mode
Note : Write each bit (except bit 6) of the A-D control register when the A-D conversion
b7
Port P7 direction register
b7
Interrupt priority level
b7
stops (before trigger occurs).
A-D control register
0
0 0
b0
b0
b0
AN
AN
AN
AN
AN
AN
AN
AN
Port P7 direction register (address 11
Interrupt priority level select bits
Set to a level between 1 to 7 when using this interrupt.
Set to a level 0 when disabling this interrupt.
b2
A-D conversion interrupt control register (address 70
One-shot mode
Trigger select bit
0 : Internal trigger
1 : External trigger
A-D conversion start bit
0: Stop A-D conversion
A-D conversion frequency (
select bit
0 : f
1 : f
Analog input select bits
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
A-D control register (address 1E
0
1
2
3
5
6
7
4
b1 b0
2
2
divided by 4
divided by 2
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
7702/7703 Group User’s Manual
16
AD
)
)
16
)
Selecting external trigger
16
Input falling edge to
AD
)
TRG
b7
Set A-D conversion start bit to “1”
pin
1
A-D CONVERTER
Operation start
Trigger occur
b0
A-D control register (address 1E
A-D conversion start bit
Selecting internal trigger
8.5 One-shot mode
16
)
8–15