MC68HC711K4CFN3 Freescale Semiconductor, MC68HC711K4CFN3 Datasheet - Page 52

MC68HC711K4CFN3

Manufacturer Part Number
MC68HC711K4CFN3
Description
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC68HC711K4CFN3

Cpu Family
HC11
Device Core Size
8b
Frequency (max)
4MHz
Interface Type
SCI/SPI
Program Memory Type
ROM
Program Memory Size
24KB
Total Internal Ram Size
768Byte
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
On-chip Adc
8-chx8-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
84
Package Type
PLCC
Lead Free Status / Rohs Status
Not Compliant

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Central Processor Unit (CPU)
3.3.6.7 Non-Maskable Interrupt (X)
3.3.6.8 Stop Disable (S)
3.4 Data Types
Technical Data
52
NOTE:
Setting the XIRQ mask (X) bit disables non-maskable interrupts from the
XIRQ pin. Every reset sets the X bit by default and only a software
instruction can clear it. When the processor recognizes a non-maskable
interrupt, it stacks the registers, sets the X and I bits, and then fetches
the interrupt vector. An interrupt service routine usually ends with a
return from interrupt (RTI), which restores the registers to the values that
were present before the interrupt occurred and clears the X bit. Only
hardware or an acknowledge can set the X bit. Only software can clear
the X bit (for example, the TAP instruction which transfers data from
accumulator A to the condition code register). There is no hardware
action for clearing X.
Setting the STOP disable (S) bit prevents the STOP instruction from
putting the M68HC11 into a low-power stop condition. If the S bit is set,
the CPU treats a STOP instruction as if it were a no-operation (NOP)
instruction and continues to the next instruction.
S is set by reset and STOP is disabled by default.
The STOP instruction can be cleared by using the TAP instruction which
transfers data from accumulator A to the condition code register.
The MC68HC11 CPU supports these data types:
A byte is eight bits wide and can be accessed at any byte location. A
word is composed of two consecutive bytes with the most significant
byte at the lower value address. Because the M68HC11 is an 8-bit CPU,
Freescale Semiconductor, Inc.
For More Information On This Product,
Bit data
8-bit and 16-bit signed and unsigned integers
16-bit unsigned fractions
16-bit addresses
Central Processor Unit (CPU)
Go to: www.freescale.com
M68HC11K Family
MOTOROLA

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