M38517F8FP Renesas Electronics America, M38517F8FP Datasheet - Page 10

• Manufacturer Part Number: M38517F8FP
• Description: MCU 8-Bit 740 CISC 32KB Flash 5V 42-Pin SSOP
• Manufacturer: Renesas Electronics America

Specifications of M38517F8FP

• Package: 42SSOP
• Family Name: 740
• Maximum Speed: 8 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 34
• Interface Type: I2C-BUS
• On-chip Adc: 5-chx10-bit
• Operating Temperature: -20 to 85 °C
• Number Of Timers: 4

Fig. 6 Register push and pop at interrupt generation and subroutine call
Table 5 Push and pop instructions of accumulator or processor status register
3851 Group
Rev.1.01
Accumulator
Processor status register
P u s h r e t u r n a d d r e s s
o n s t a c k
P O P r e t u r n
a d d r e s s f r o m s t a c k
Oct 15, 2003
(Built-in 24 KB or more ROM)
Note: Condition for acceptance of an interrupt
page 8 of 89
M (S)
( P C
M ( S )
( P C
E x e c u t e R T S
S u b r o u t i n e
I n t e r r u p t r e q u e s t
( S )
(S)
( S )
( S )
H
L
)
)
( S ) – 1
(S)– 1
( S ) + 1
( S ) + 1
(PC
M ( S )
( P C
M ( S )
H
L
(Note)
)
)
On-going Routine
Push instruction to stack
E x e c u t e J S R
PHA
PHP
Interrupt enable flag is “1”
Interrupt disable flag is “0”
M ( S )
S e r v i c e R o u t i n e
M (S)
M (S)
(PC
(PC
( P S )
E x e c u t e R T I
(S)
(S)
(S)
(S)
(S)
(S)
I n t e r r u p t
H
L
)
)
( P S )
(S) + 1
(S) + 1
(S) + 1
(PC
(S) – 1
(S) – 1
(PC
(S) – 1
M (S)
M (S)
M ( S )
H
L
)
)
Push return address
on stack
Push contents of processor
status register on stack
POP contents of
processor status
register from stack
POP return
address
from stack
Pop instruction from stack
I Flag is set from “0” to “1”
Fetch the jump vector
PLA
PLP