tmp88cs38ng TOSHIBA Semiconductor CORPORATION, tmp88cs38ng Datasheet - Page 27

• Manufacturer Part Number: tmp88cs38ng
• Description: Cmos 8-bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

INT5
INTTBT
IL
IL
IMF
Execution
Address
bus
PC
SP
RBS
INF
15
6
1-machine cycle
Note 1: a: Return address, b: Entry address, c: Address which the RETI instruction is stored
Note 2: The maximum response time from when an IL is set until an interrupt acceptance processing starts is 62/fc
Figure 1.5.3 Timing Chart of Interrupt Acceptance and Interrupt Return Instruction
Instruction
a
[s] with interrupt enabled.
a
IMF
Execution
Address
bus
PC
SP
RBS
INF
a + 1
a + 1
c
n
n − 5
c + 1
c
FFFE4
(b) Return from interrupt instruction
c + 1 n − 4 n − 3 n − 2 n − 1
FFFE5 FFFE6 FFFE7
(a) Interrupt acceptance
Interrupt service task
n − 4 n − 3 n − 2 n − 1
i
88CS38-27
k
Interrupt acceptance
C + 2
a
RETI instruction
n − 1 n −2 n − 3 n − 4
n
n − 1
n
n − 2
a
a + 1
a
n − 3
TMP88CS38/CM38A/CP38A
n
a + 1
a + 2
i
n − 4
b
Interrupt service task
b + 1
b
k = i + (FFFE7H). 3 − 0
n − 5
b + 1
b + 2
Instruction
2007-09-12
b + 2
b + 3