MC68HC908LJ12CFU Freescale Semiconductor, MC68HC908LJ12CFU Datasheet - Page 143

• Manufacturer Part Number: MC68HC908LJ12CFU
• Description: IC MCU 12K FLASH 8MHZ 64-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908LJ12CFU

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: IRSCI, SPI
• Peripherals: LCD, LVD, POR, PWM
• Number Of I /o: 32
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

MC68HC908LJ12
Freescale Semiconductor
—
Rev. 2.1
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).
(See
Figure
AS MANY INTERRUPTS
System Integration Module (SIM)
AS EXIST ON CHIP
9-10.)
YES
Figure 9-10. Interrupt Processing
INSTRUCTION?
INSTRUCTION?
INSTRUCTION
FROM RESET
INTERRUPT?
FETCH NEXT
INTERRUPT?
I-BIT SET?
I BIT SET?
BREAK
SWI
IRQ
RTI
NO
NO
NO
NO
NO
YES
YES
YES
YES
LOAD PC WITH INTERRUPT VECTOR
UNSTACK CPU REGISTERS
STACK CPU REGISTERS
EXECUTE INSTRUCTION
System Integration Module (SIM)
SET I-BIT
Technical Data
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