MC68HC908JL3ECP Freescale Semiconductor, MC68HC908JL3ECP Datasheet - Page 56

• Manufacturer Part Number: MC68HC908JL3ECP
• Description: IC MCU 4K FLASH 8MHZ 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908JL3ECP

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 23
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Connectivity: -

System Integration Module (SIM)
Interrupts are latched, and arbitration is performed in the SIM at the start of interrupt processing. The
arbitration result is a constant that the CPU uses to determine which vector to fetch. Once an interrupt is
latched by the SIM, no other interrupt can take precedence, regardless of priority, until the latched
interrupt is serviced (or the I bit is cleared).
56
(As many interrupts as exist on chip)
YES
BREAK INTERRUPT?
MC68HC908JL3E Family Data Sheet, Rev. 4
INSTRUCTION?
INSTRUCTION?
INSTRUCTION
Figure 5-8. Interrupt Processing
FROM RESET
INTERRUPT?
INTERRUPT?
FETCH NEXT
I BIT SET?
I BIT SET?
TIMER
SWI
IRQ
RTI
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
LOAD PC WITH INTERRUPT VECTOR.
UNSTACK CPU REGISTERS.
STACK CPU REGISTERS.
EXECUTE INSTRUCTION.
SET I BIT.
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