M37544G2AGP Renesas Electronics America, M37544G2AGP Datasheet - Page 12

• Manufacturer Part Number: M37544G2AGP
• Description: MCU 2/5V 8K 32-LQFP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M37544G2AGP

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: WDT
• Number Of I /o: 25
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: QzROM
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 6x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Rev.1.04
REJ03B0012-0104Z
7544 Group
Fig. 10 Register push and pop at interrupt generation and subroutine call
Table 3 Push and pop instructions of accumulator or processor status register
Accumulator
Processor status register
Store Return Address
on Stack
Restore Return
Address
2004.06.08
Note : The condition to enable the interrupt
page 10 of 66
M (S)
M (S)
(PC
(PC
Execute RTS
Subroutine
(S)
(S)
(S)
(S)
Interrupt request
L
H
)
) M (S)
(PC
(S – 1)
(S – 1)
(S + 1)
(S + 1)
(PC
M (S)
H
L
(Note)
)
)
Push instruction to stack
On-going Routine
Execute JSR
PHA
PHP
Interrupt enable bit is “1”
Interrupt disable flag is “0”
Service Routine
(PC
M (S)
M (S)
(PC
M (S)
(PS)
Execute RTI
(S)
(S)
(S)
(S)
(S)
(S)
Interrupt
H
L
)
) M (S)
(S + 1)
(S + 1)
(S + 1)
(S – 1)
(S – 1)
(S – 1)
(PC
(PC
(PS)
M (S)
M (S)
H
L
)
)
Pop instruction from stack
Store Return Address
on Stack
Store Contents of Processor
Status Register on Stack
Restore Contents of
Processor Status Register
Restore Return
Address
I Flag “0” to “1”
Fetch the Jump Vector
PLA
PLP