HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 167

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

5.4.5
The H8S/2245 Group is capable of fast word transfer instruction to on-chip memory, and the
program area is provided in on-chip ROM and the stack area in on-chip RAM, enabling high-
speed processing.
Table 5.8 shows interrupt response times - the interval between generation of an interrupt request
and execution of the first instruction in the interrupt handling routine. The execution status
symbols used in table 5.8 are explained in table 5.9.
Table 5.8
Notes: 1. Two states in case of internal interrupt.
Table 5.9
Legend:
m: Number of wait states in an external device access.
No.
1
2
3
4
5
6
Total (using on-chip memory)
Symbol
Instruction fetch
Branch address read
Stack manipulation
Execution Status
Interrupt priority determination*
Number of wait states until executing
instruction ends*
PC, CCR stack save
Vector fetch
Instruction fetch*
Internal processing*
2. Refers to MULXS and DIVXS instructions.
3. Prefetch after interrupt acceptance and interrupt handling routine prefetch.
4. Internal processing after interrupt acceptance and internal processing after vector fetch.
Interrupt Response Times
Interrupt Response Times
Number of States in Interrupt Handling Routine Execution Statuses
2
3
4
S
S
S
I
J
K
Internal
Memory
1
1
2-State
Access
4
Normal Mode
INTM1 = 0
3
1 to 19+2·S
2·S
S
2·S
2
11 to 31
I
K
I
8 Bit Bus
Rev.3.00 Mar. 26, 2007 Page 125 of 772
Object of Access
3-State
Access
6+2m
I
External Device
Section 5 Interrupt Controller
Advanced Mode
INTM1 = 0
3
1 to 19+2·S
2·S
2·S
2·S
2
12 to 32
2-State
Access
2
K
I
I
REJ09B0355-0300
16 Bit Bus
I
3-State
Access
3+m