M37542F8FP#U0 Renesas Electronics America, M37542F8FP#U0 Datasheet - Page 16

• Manufacturer Part Number: M37542F8FP#U0
• Description: IC 740 MCU FLASH 32K 36SSOP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M37542F8FP#U0

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SIO, UART/USART
• Peripherals: WDT
• Number Of I /o: 29
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 36-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

7542 Group
Fig. 12 Register push and pop at interrupt generation and subroutine call
Table 4 Push and pop instructions of accumulator or processor status register
Rev.3.03
REJ03B0006-0303
Accumulator
Processor status register
Store Return Address
on Stack
Jul 11, 2008
Restore Return
Address
Note : The condition to enable the interrupt
Page 14 of 117
M (S)
(PC
M (S)
(PC
Execute RTS
Subroutine
(S)
(S)
(S)
(S)
Interrupt request
H
L
)
)
(S – 1)
(S – 1)
(S + 1)
(S + 1)
(PC
(PC
M (S)
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
M (S)
M (S)
(PC
(PC
M (S)
Execute RTI
(PS)
(S)
(S)
(S)
(S)
(S)
(S)
Interrupt
H
L
)
)
(S – 1)
(S – 1)
(S – 1)
(S + 1)
(S + 1)
(S + 1)
(PC
M (S)
(PC
M (S)
(PS)
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