Freescale Semiconductor, Inc.
A FLASH MCU SOLUTION
68HC908QT1
8-bit Microcontroller
TARGET APPLICATIONS
鈥?Discrete replacement
鈥?Appliances
鈥?Control systems
鈥?Home and industrial
security systems
鈥?Fluorescent light ballasts
鈥?Electromechanical replacement
FEATURES
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 operation 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
BENEFITS
鈥?Easy-to-learn, easy-to-use architecture
鈥?Object compatible with 68HC05
鈥?Allows for efficient, compact modular
coding in assembly or C
Freescale Semiconductor, Inc...
1.5K BYTES INTEGRATED SECOND-GENERATION FLASH MEMORY
鈥?In-application reprogrammable
鈥?Cost-effective programming changes and
field software upgrades via in-application
programmability and reprogrammability
鈥?Virtually eliminates scrap, costly rework
and cost of socket
鈥?The benefits of FLASH at competitive
OTP prices
鈥?Helps to reduce production programming
costs through ultra-fast programming
鈥?Helps to reduce power and speed application
when writing non-volatile data is required
鈥?Virtually eliminates the need and cost for
external serial data EEPROM
鈥?Easily performs table lookup and data
manipulation without slow and cumbersome
special table instructions
The 68HC908QT1 helps reduce system cost by
eliminating the need for external low-voltage
inhibit, external drivers with high-current I/O
and external data EEPROM and helps reduce
programming cost with Fast FLASH
programming. Other valuable features include
an internal clock oscillator. It helps maximize
efficiency and speed time-to-market with the
ability change code in-application with FLASH
and free, professional-quality development
tools including a QT/QY C compiler, simulator,
assembler, linker, FLASH programmer and
auto-code generator.
鈥?Extremely fast programming
鈥?As fast as 32 碌sec/byte
鈥?Up to 100x faster than most embedded
FLASH
鈥?FLASH easily used for data EEPROM
鈥?10K minimum write/erase cycles across
temperature
鈥?Byte writeable
鈥?No restrictions or special instructions to
access data in FLASH program memory
鈥?Flexible block protection and security
鈥?Helps to protect code from unauthorized
reading
鈥?Guards against unintentional erasing/writing
of user-programmable segments of code
CPU08
INTERNAL CLOCK OSCILLATOR
128 RAM
KBI
PORT A
6
1.5K FLASH
鈥?3.2 MHz nominal bus frequency
鈥?+/- 25 percent trimmable
鈥?+/- 5 percent accurate to 105擄C
MON
鈥?Can eliminate the cost of all external
clock components
鈥?Helps to reduce board space
鈥?Can eliminate EMI generated from
external clocks
鈥?Allows option of external RC, external clock
or external crystal/resonator
BRK
TIM
FLEXIBLE I/O
SIM
COP
鈥?Up to five bidirectional I/O and one input
鈥?High-current drive
鈥?Programmable pull-ups/keyboard interrupt
INT OSC
鈥?High-current I/O allows direct drive of LED
and other circuits to virtually eliminate
external drivers and reduce system costs
鈥?Keyboard scan with programmable pull-ups
virtually eliminates external glue logic when
interfacing to simple keypads
For More Information On This Product,
Go to: www.freescale.com
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