MC68HC908RF2MFA Freescale Semiconductor, MC68HC908RF2MFA Datasheet - Page 97

• Manufacturer Part Number: MC68HC908RF2MFA
• Description: IC MCU 2K FLASH 4MHZ 32-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908RF2MFA

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: LVD, POR, PWM, RF Mod
• Number Of I /o: 12
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

MC68HC908RF2 — Rev. 4.0
MOTOROLA
NOTE:
If the MODEI bit is clear, the IRQ pin is falling-edge sensitive only. With MODEI
clear, a vector fetch or software clear immediately clears the IRQ1 latch.The IRQ1F
bit in the INTKBSCR register can be used to check for pending interrupts. The
IRQ1F bit is not affected by the IMASKI bit, which makes it useful in applications
where polling is preferred.
Use the BIH or BIL instruction to read the logic level on the IRQ pin.
When using the level-sensitive interrupt trigger, avoid false interrupts by masking
interrupt requests in the interrupt routine.
Freescale Semiconductor, Inc.
For More Information On This Product,
YES
Keyboard/External Interrupt Module (KBI)
Go to: www.freescale.com
INSTRUCTION?
INSTRUCTION?
INSTRUCTION
FROM RESET
INTERRUPT?
FETCH NEXT
I BIT SET?
Figure 7-4. IRQ Interrupt Flowchart
SWI
RTI
NO
NO
NO
NO
YES
YES
YES
LOAD PC WITH INTERRUPT VECTOR
UNSTACK CPU REGISTERS
EXECUTE INSTRUCTION
STACK CPU REGISTERS
Keyboard/External Interrupt Module (KBI)
SET I BIT
Functional Description
Data Sheet
97