MC68HC705C8AB Freescale Semiconductor, MC68HC705C8AB Datasheet - Page 59

• Manufacturer Part Number: MC68HC705C8AB
• Description: IC MCU 8K OTP 2.1MHZ 42-SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705C8AB

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 304 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 42-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

MC68HC705C8A — Rev. 3
MOTOROLA
Figure 4-5. Reset and Interrupt Processing Flowchart
YES
CCR REGISTER
INSTRUCTION?
INSTRUCTION?
INSTRUCTION
Freescale Semiconductor, Inc.
FETCH NEXT
INTERRUPT?
INTERRUPT?
INTERRUPT?
INTERRUPT?
EXTERNAL
I BIT IN
RESET
TIMER
For More Information On This Product,
FROM
SET?
IRQ
SCI
SWI
SPI
RTI
NO
NO
NO
NO
NO
NO
NO
Go to: www.freescale.com
YES
YES
YES
YES
YES
YES
Interrupts
RESTORE REGISTERS FROM STACK:
CLEAR IRQ REQUEST LATCH
EXECUTE INSTRUCTION
1. STACK PC, X, A, CCR
2. SET I BIT
3. LOAD PC WITH VECTOR
TIMER:
CCR, A, X, PC
SWI:
IRQ:
SCI:
SPI:
$1FFC–$1FFD
$1FFA–$1FFB
$1FF8–$1FF9
$1FF6–$1FF7
$1FF4–$1FF5
Interrupt Processing
Technical Data
Interrupts