M30620FCAFP#D3 Renesas Electronics America, M30620FCAFP#D3 Datasheet - Page 59
![IC M16C MCU FLASH 128K 100LQFP](/photos/28/61/286112/100-bqfp__prqp0100jb-a_sml.jpg)
M30620FCAFP#D3
Manufacturer Part Number
M30620FCAFP#D3
Description
IC M16C MCU FLASH 128K 100LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/60r
Specifications of M30620FCAFP#D3
Core Processor
M16C/60
Core Size
16-Bit
Speed
16MHz
Connectivity
SIO, UART/USART
Peripherals
DMA, PWM, WDT
Number Of I /o
85
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
10K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 10x10b, D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Interrupt
56
Figure 1.11.6. State of stack before and after acceptance of interrupt request
Saving Registers
In the interrupt sequence, only the contents of the flag register (FLG) and that of the program counter
(PC) are saved in the stack area.
First, the processor saves the four higher-order bits of the program counter, and 4 upper-order bits and 8
lower-order bits of the FLG register, 16 bits in total, in the stack area, then saves 16 lower-order bits of the
program counter. Figure 1.11.6 shows the state of the stack as it was before the acceptance of the
interrupt request, and the state the stack after the acceptance of the interrupt request.
Save other necessary registers at the beginning of the interrupt routine using software. Using the
PUSHM instruction alone can save all the registers except the stack pointer (SP).
Address
m – 4
m – 3
m – 2
m – 1
Stack status before interrupt request
is acknowledged
m + 1
m
MSB
Content of previous stack
Content of previous stack
Stack area
LSB
[SP]
Stack pointer
value before
interrupt occurs
Address
m – 4
m – 3
m – 2
m – 1
m
m + 1
Stack status after interrupt request
is acknowledged
MSB
Flag register
Content of previous stack
Content of previous stack
Program counter (PC
Program counter (PC
(FLG
Flag register (FLG
Stack area
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
H
)
counter (PC
Program
L
)
L
M
)
)
LSB
H
)
M16C / 62A Group
Mitsubishi microcomputers
[SP]
New stack
pointer value
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