MC68HC705C8AFNE Freescale Semiconductor, MC68HC705C8AFNE Datasheet - Page 50

• Manufacturer Part Number: MC68HC705C8AFNE
• Description: IC MCU 8BIT 44-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705C8AFNE

• 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: 44-PLCC
• Processor Series: HC705C
• Core: HC05
• Data Bus Width: 8 bit
• Data Ram Size: 304 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 2.1 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 1
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• On-chip Adc: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Interrupts
4.3 Interrupt Sources
4.3.1 Software Interrupt
Technical Data
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These sources can generate interrupts:
The IRQ pin, port B pins, SCI, and SPI can be masked (disabled) by
setting the I bit of the condition code register (CCR). The software
interrupt (SWI) instruction is non-maskable.
An interrupt temporarily changes the program sequence to process a
particular event. An interrupt does not stop the execution of the
instruction in progress but takes effect when the current instruction
completes its execution. Interrupt processing automatically saves the
central processor unit (CPU) registers on the stack and loads the
program counter with a user-defined vector address.
The software interrupt instruction (SWI) causes a non-maskable
interrupt.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Software instructions (SWI)
External interrupt pin (IRQ)
Port B pins
Serial communications interface (SCI):
– SCI transmit data register empty
– SCI transmission complete
– SCI receive data register full
– SCI receiver overrun
– SCI receiver input idle
Serial peripheral interface (SPI):
– SPI transmission complete
– SPI mode fault
– SPI overrun
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Interrupts
MC68HC705C8A — Rev. 3