M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 77

• 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

4.6 Interrupt priority level detection time
After sampling had started, an interrupt priority level detection time has elapses before an interrupt request
is accepted. The interrupt priority level detection time can be selected by software. Figure 4.6.1 shows the
interrupt priority level detection time.
As the interrupt priority level detection time, normally select “2 cycles of internal clock .”
Fig. 4.6.1 Interrupt priority level detection time
(1) Interrupt priority detection time select bits
(2) Interrupt priority level detection time
b7
Interrupt priority level
Note: Pulse exists when “2 cycles of
b6
0
detection time
b5
b4
Op code fetch cycle
Sampling pulse
b3
(a) 7 cycles
(b) 4 cycles
(c) 2 cycles
b2
b5, b4
b1
7702/7703 Group User’s Manual
b0
0 0
0 1
1 0
1 1
” is selected.
Processor mode bits
Wait bit
Fix to “0.”
Processor mode register (Address 5E
Software reset bit
Clock
7 cycles of
4 cycles of
Do not select
2 cycles of
Interrupt priority detection time select bits
1
4.6 Interrupt priority level detection time
output select bit
[(a) shown below]
[(b) shown below]
[(c) shown below]
(Note)
INTERRUPTS
16
)
4–13