M38227ECFP Renesas Electronics America, M38227ECFP Datasheet - Page 15

• Manufacturer Part Number: M38227ECFP
• Description: IC 740 MCU EPROM 48K 80QFP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M38227ECFP

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: LCD
• Number Of I /o: 49
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: OTP
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Fig. 10 Register push and pop at interrupt generation and subroutine call
Table 7 Push and pop instructions of accumulator or processor status register
12
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
POP return
address from stack
Note: Condition for acceptance of an interrupt
M ( S )
( P C
M ( S )
( P C
E x e c u t e R T S
Subroutine
( S )
( S )
(S)
Interrupt request
(S)
L
H
)
)
( S ) – 1
(S)– 1
( S ) + 1
(S) + 1
( P C
M ( S )
( P C
M ( S )
H
L
(Note)
)
)
O n - g o i n g R o u t i n e
Push instruction to stack
E x e c u t e J S R
PHA
PHP
Interrupt enable flag is “1”
I n t e r r u p t d i s a b l e f l a g i s “ 0 ”
M ( S )
Service Routine
M (S)
M ( S )
(PC
(PC
(PS)
Execute RTI
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
( S )
( S )
( S )
( S )
( S )
( S )
Interrupt
H
L
)
)
( S ) – 1
( S ) – 1
( P S )
( S ) – 1
( S ) + 1
( S ) + 1
( S ) + 1
(PC
( P C
M (S)
M (S)
M (S)
MITSUBISHI MICROCOMPUTERS
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
3822 Group