MC68HC705C8ACP Freescale Semiconductor, MC68HC705C8ACP Datasheet - Page 57
MC68HC705C8ACP
Manufacturer Part Number
MC68HC705C8ACP
Description
IC MCU 4MHZ 8K OTP 40-DIP
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet
1.MC68HC705C8ACFN.pdf
(222 pages)
Specifications of MC68HC705C8ACP
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
40-DIP (0.600", 15.24mm)
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:
MC68HC705C8ACP
Manufacturer:
MOTOROLA
Quantity:
13
Company:
Part Number:
MC68HC705C8ACPE
Manufacturer:
ON
Quantity:
1 000
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4.4 Interrupt Processing
MC68HC705C8A — Rev. 3
MOTOROLA
The CPU takes these actions to begin servicing an interrupt:
The return-from-interrupt (RTI) instruction causes the CPU to recover
the CPU registers from the stack as shown in
Function
interrupts
interrupts
interrupts
Software
interrupt
External
interrupt
1. Stores the CPU registers on the stack in the order shown in
2. Sets the I bit in the CCR to prevent further interrupts
3. Loads the program counter with the contents of the appropriate
Freescale Semiconductor, Inc.
Reset
(SWI)
Timer
SCI
SPI
For More Information On This Product,
Figure 4-4
interrupt vector locations as shown in
RESET pin
Port B pins
Table 4-1. Reset/Interrupt Vector Addresses
User code
Go to: www.freescale.com
Power-on
MODF bit
RDRF bit
TDRE bit
IDLE bit
SPIF bit
Source
IRQ pin
OCF bit
TOF bit
ICF bit
OR bit
TC bit
logic
Interrupts
OCIE bit
TOIE bit
TCIE bit
ICIE bit
ILIE bit
RIE bit
Local
Mask
None
None
None
SPIE
Global
Mask
None
None
I bit
I bit
I bit
I bit
(1 = Highest)
Same priority
instruction
Table
Priority
as any
Figure
1
2
3
4
5
4-1.
4-4.
Interrupt Processing
Vector Address
$1FFC–$1FFD
$1FFE–$1FFF
$1FFA–$1FFB
$1FF8–$1FF9
$1FF6–$1FF7
$1FF4–$1FF5
Technical Data
Interrupts
57
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