Freescale Semiconductor, Inc.
A FLASH MCU SOLUTION
68HC908KX8/KX2
8-bit Microcontroller
FEATURES
TARGET APPLICATIONS
鈥?Networked and control
systems
鈥?Home and industrial security
systems
鈥?Building control systems
鈥?Interconnected home
appliances
鈥?Fluorescent light ballasts
BENEFITS
HIGH-PERFORMANCE 68HC08 CPU CORE
鈥?8 MHz bus operation at 5V operation for
125 nsec minimum instruction cycle time
鈥?4 MHz bus operation at 3V for 250 nsec
minimum instruction cycle time
鈥?Efficient instruction set including multiply
and divide
鈥?16 flexible addressing modes including
stack relative with 16-bit stack pointer
鈥?Fully static low-voltage, low-power design
with wait and stop modes
鈥?Object code compatible with the 68HC05
鈥?Easy to learn and use architecture
鈥?C optimized architecture provides compact
code
Freescale Semiconductor, Inc...
INTEGRATED SECOND GENERATION FLASH MEMORY
The 68HC908KX8 and the 68HC908KX2
maximize efficiency and reduce system
costs with an internal clock generator
which eliminates the need for an external
clock source. Other valuable features
include a serial communications interface
(SCI) enabling high-speed communication,
an analog-to-digital converter (ADC) and a
timebase module (TBM) for more
cost-effective processing.
鈥?In-application re-programmable
鈥?Extremely fast programming, encoding
64 bytes in as fast as 2 msec
鈥?FLASH programming across the 68HC08鈥檚
full operating supply voltage with no extra
programming voltage
鈥?10K write/erase cycles minimum over
temperature
鈥?Flexible block protection and security
鈥?Cost-effective programming changes and
field software upgrades via in-application
programmability and re-programmability
鈥?Reduces production programming costs
through ultra-fast programming
鈥?Allows re-programmable battery-powered
applications
鈥?Byte-writable for data as well as program
memory
鈥?Protects code from unauthorized reading
and to guard against unintentional
erasing/writing of user-programmable
segments of code
INTERNAL CLOCK GENERATOR
CPU08
KBI
PORT A
5
192 RAM
8K/2K
FLASH
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Software-selectable bus frequencies
2% accurate with trim capability
Clock monitor
Option to allow use of external clock source
or external crystal/ceramic resonator
鈥?Eliminates the need and cost for an
external clock source
鈥?Improved accuracy across temperature and
voltage
8-BIT ANALOG-TO-DIGITAL CONVERTER
MON
4 CHANNEL/
8-BIT ADC
鈥?4 channels
鈥?Single conversion in 17 碌sec
PORT B
8
BRK
鈥?Fast, easy conversion from analog inputs
like temperature, pressure and fluid levels
to digital values for CPU processing
SIM
TWO PROGRAMMABLE 16-BIT TIMER CHANNELS
鈥?125 nsec resolution at 8 MHz bus
鈥?Free-running counter or modulo up-counter
TIM
IRQ
COP
鈥?Each channel independently programmable
for input capture, output compare or
unbuffered PWM
鈥?Pairing timer channels provides a buffered
PWM function
LVI
SCI
SERIAL COMMUNICATIONS INTERFACE
鈥?UART asynchronous communications
system
鈥?Flexible baud rate generator
鈥?Double buffered transmit and receive
鈥?Optional hardware parity checking and
generation
鈥?Asynchronous communication between the
MCU and a terminal, computer or a
network of microcontrollers
ICG
TBM
For More Information On This Product,
Go to: www.freescale.com
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