M30621ECGP MITSUBISHI [Mitsubishi Electric Semiconductor], M30621ECGP Datasheet - Page 46

• Manufacturer Part Number: M30621ECGP
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Interrupt
46
Table 1.10.5. Time required for executing the interrupt sequence
Note 1: Add 2 cycles in the case of a DBC interrupt; add 1 cycle in the case either of an address coincidence
Note 2: Locate an interrupt vector address in an even address, if possible.
Figure 1.10.5. Time required for executing the interrupt sequence
Table 1.10.6. Relationship between interrupts without interrupt priority levels and IPL
Interrupt vector address
Variation of IPL when Interrupt Request is Accepted
BCLK
R
Address bus
Data bus
W
Time (a) is dependent on the instruction under execution. Thirty cycles is the maximum required for the
DIVX instruction (without wait).
Time (b) is as shown in Table 1.10.5.
If an interrupt request is accepted, the interrupt priority level of the accepted interrupt is set in the IPL.
If an interrupt request, that does not have an interrupt priority level, is accepted, one of the values shown
in Table 1.10.6 is set in the IPL.
Watchdog timer, NMI
Reset
Other
Odd (Note 2)
Odd (Note 2)
interrupt or of a single-step interrupt.
Interrupt sources without priority levels
Even
Even
The indeterminate segment is dependent on the queue buffer.
If the queue buffer is ready to take an instruction, a read cycle occurs.
1
_______
Address
0000
information
2
Interrupt
Stack pointer (SP) value
3
4
Even
Even
Odd
Odd
________
Indeterminate
Indeterminate
5
Indeterminate
6
7
16-Bit bus, without wait
8
18 cycles (Note 1)
19 cycles (Note 1)
19 cycles (Note 1)
20 cycles (Note 1)
SP-2
9
contents
SP-2
10
SP-4
11
contents
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Value set in the IPL
SP-4
12
Not changed
13
vec
contents
M16C / 62 Group (80-pin)
vec
7
0
8-Bit bus, without wait
14
20 cycles (Note 1)
20 cycles (Note 1)
20 cycles (Note 1)
20 cycles (Note 1)
vec+2
15
Mitsubishi microcomputers
contents
vec+2
16
17
PC
18