MC68HC11K1CFN4 Freescale Semiconductor, MC68HC11K1CFN4 Datasheet - Page 185

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MC68HC11K1CFN4

Manufacturer Part Number
MC68HC11K1CFN4
Description
IC MCU 640 EEPROM 4MHZ 84-PLCC
Manufacturer
Freescale Semiconductor
Series
HC11r
Datasheets

Specifications of MC68HC11K1CFN4

Core Processor
HC11
Core Size
8-Bit
Speed
4MHz
Connectivity
SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
37
Program Memory Type
ROMless
Eeprom Size
640 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
84-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Program Memory Size
-

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9.4 Input Capture and Output Compare Overview
M68HC11K Family
MOTOROLA
The free-running counter begins incrementing from $0000 as the MCU
comes out of reset and continues to the maximum count, $FFFF. At the
maximum count, the counter rolls over to $0000, sets the timer overflow
flag (TOF) in the timer interrupt flag 2 (TFLG2) register, and continues to
increment. The value in this counter can be read in the timer counter
(TCNT) register, but cannot be written or changed except by reset.
The pulse accumulator, described in
derives its clock by post-scaling the main timer so that the output
frequency is always E clock divided by 64. This clock drives an 8-bit
counter while the pulse accumulator is operating in event counting
mode.
RTI is a programmable periodic interrupt circuit that can be used to pace
the execution of software routines, as described in
Interrupt
clock driving the free-running counter. The post-scaler output of this
chain runs at a frequency of E clock divided by 2
The COP watchdog timer
System) further divides the RTI clock by four to drive its circuitry at a
frequency of E clock divided by 2
The M68HC11K series features:
Each of the three input capture functions has its own 16-bit input capture
register (time capture latch) and each of the output compare functions
has its own 16-bit compare register. All timer functions, including the
timer overflow and RTI, have their own interrupt controls and separate
interrupt vectors.
Freescale Semiconductor, Inc.
For More Information On This Product,
Three input capture channels
Four output compare channels
One channel that can be selected to perform either input capture
or output compare
(RTI). The clock driving this function is also derived from the
Go to: www.freescale.com
Timing System
(5.3.3 Computer Operating Properly (COP)
15
Input Capture and Output Compare Overview
.
9.7 Pulse Accumulator
13
.
9.8 Real-Time
Timing System
Technical Data
(PA),
185

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