MC68HC908GR8CD Freescale Semiconductor, MC68HC908GR8CD Datasheet - Page 50

• Manufacturer Part Number: MC68HC908GR8CD
• Description: 8-bit Microcontrollers - MCU 8 Bit 8MHz
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC908GR8CD

• Product Category: 8-bit Microcontrollers - MCU
• Rohs: yes
• Core: HC08
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 384 B
• Operating Supply Voltage: 3 V to 5 V
• Package / Case: SOIC-28
• Mounting Style: SMD/SMT
• Data Rom Size: 64 KB
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 21
• Program Memory Type: Flash

Resets and Interrupts
4.3.2.1 SWI Instruction
The software interrupt instruction (SWI) causes a non-maskable interrupt.
50
A software interrupt pushes PC onto the stack. An SWI does not push
PC – 1, as a hardware interrupt does.
YES
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
INSTRUCTION
INSTRUCTION
FETCH NEXT
INSTRUCTION
INTERRUPTS
FROM RESET
INTERRUPT
Figure 4-5. Interrupt Processing
INTERRUPT
INTERRUPT
I BIT SET?
I BIT SET?
OTHER
BREAK
CGM
IRQ
SWI
RTI
?
?
?
?
?
?
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
NOTE
LOAD PC WITH INTERRUPT VECTOR
UNSTACK CPU REGISTERS
EXECUTE INSTRUCTION
STACK CPU REGISTERS
SET I BIT
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