MC68HC705C8ACFNE Freescale Semiconductor, MC68HC705C8ACFNE Datasheet - Page 58

• Manufacturer Part Number: MC68HC705C8ACFNE
• Description: IC MCU 8K 2.1MHZ OTP 44-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705C8ACFNE

• 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: -40°C ~ 85°C
• Package / Case: 44-PLCC
• A/d Inputs: 4-Channel, 8-Bit
• Eeprom Memory: 0 Bytes
• Input Output: 24
• Interface: SCI/SPI
• Memory Type: OTP
• Number Of Bits: 8
• Package Type: 44-pin PLCC
• Programmable Memory: 8K Bytes
• Timers: 3-16-bit
• Voltage, Range: 3-5.5 V
• 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: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: RoHS Compliant part

Interrupts
Technical Data
58
NOTE:
If more than one interrupt request is pending, the CPU fetches the vector
of the higher priority interrupt first. A higher priority interrupt does not
interrupt a lower priority interrupt service routine unless the lower priority
interrupt service routine clears the I bit. See
listing.
Figure 4-5
STACKING
Freescale Semiconductor, Inc.
ORDER
5
4
3
2
1
For More Information On This Product,
UNSTACKING
ORDER
1
2
3
4
5
shows the sequence of events caused by an interrupt.
Go to: www.freescale.com
Figure 4-4. Interrupt Stacking Order
Interrupts
PROGRAM COUNTER (HIGH BYTE)
PROGRAM COUNTER (LOW BYTE)
CONDITION CODE REGISTER
INDEX REGISTER
ACCUMULATOR
•
•
•
•
•
•
Table 4-1
MC68HC705C8A — Rev. 3
$00C0 (BOTTOM OF STACK)
$00C1
$00C2
$00FD
$00FE
$00FF (TOP OF STACK)
•
•
•
•
•
•
for a priority