M38D59GCHP#U0 Renesas Electronics America, M38D59GCHP#U0 Datasheet - Page 15

• Manufacturer Part Number: M38D59GCHP#U0
• Description: IC 740/38D5 MCU QZ-ROM 80LQFP
• Manufacturer: Renesas Electronics America
• Series: 740/38000r

Specifications of M38D59GCHP#U0

• Core Processor: 740
• Core Size: 8-Bit
• Speed: 12.5MHz
• Connectivity: SIO, UART/USART
• Peripherals: LCD, LED, PWM, WDT
• Number Of I /o: 59
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: QzROM
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 80-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

38D5 Group
Rev.3.04
REJ03B0158-0304
Fig. 7 Register push and pop at interrupt generation and subroutine call
Table 7
Accumulator
Processor status register
Push return address
on stack
POP return address
from stack
Note1: Condition for acceptance of an interrupt request here → Interrupt disable flag is “0” and
Push and pop instructions of accumulator or processor status register
May 20, 2008 Page 13 of 134
Execute RTS
(PC
(PC
M(S)
(S)
M(S)
(S)
(S)
(S)
Subroutine
←
←
H
←
←
L
)
)
←
←
(S) − 1
(S) − 1
(S) + 1
←
(S) + 1
←
(PC
(PC
M(S)
M(S)
H
L
)
Interrupt request
)
On-going Routine
Push instruction to stack
Execute JSR
(1)
→
PHA
PHP
Interrupt enable bit corresponding to each interrupt source is “1”
Interrupt Service
M(S)
(S)
M(S)
(S)
(S)
(S)
(S)
(PC
(S)
(PC
Execute RTI
M(S)
(PS)
Routine
←
←
←
←
←
←
L
H
)
)
←
←
←
←
(S) − 1
(S) − 1
(S) − 1
(S) + 1
(S) + 1
←
(S) + 1
←
(PC
(PC
M(S)
(PS)
M(S)
M(S)
H
L
Pop instruction from stack
)
)
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
I Flag is set from “0” to “1”
Fetch the jump vector
PLA
PLP