MC68HC705C8ACFB Freescale Semiconductor, MC68HC705C8ACFB Datasheet - Page 58
![no-image](/images/manufacturer_photos/0/2/262/freescale_semiconductor_sml.jpg)
MC68HC705C8ACFB
Manufacturer Part Number
MC68HC705C8ACFB
Description
IC MCU 8K 4MHZ OTP 44-QFP
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet
1.MC68HC705C8ACFN.pdf
(222 pages)
Specifications of MC68HC705C8ACFB
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-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC705C8ACFB
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC68HC705C8ACFB
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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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
MOTOROLA
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