鈥?/div>
Smart batteries
Battery chargers
Instrumentation
Data acquisition
Temperature sensing
and control
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 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
BENEFITS
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
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
The 68HC908SR12 features advanced analog
integration with on-chip temperature sensor,
current sensor, 10-bit analog-to-digital
converter (ADC) and programmable amplifier.
Other valuable peripherals include SMBus,
pulse width modulator (PWM), clock generator
module with PLL (CGM), I
2
C and timebase
module (TBM).
ADVANCED ANALOG FUNCTIONS
CPU08
TIM1
PORT A
512 RAM
TIM2
12K FLASH
SCI
MON
SM
BUS
/I
2
C
BRK
14 CHANNEL/
10-BIT ADC
8
鈥?Temperature sensor
鈥?Current sensor
鈥?Programmable amplifier
PORT B
7
鈥?Provides cost savings by moving functions
on-chip
鈥?Better than 1擄C resolution, range 鈥?0擄C to
+70擄C
鈥?Amplifier gain up to 16x reduces the need
for external op-amps
鈥?Generates an interrupt when current is
detected to conserve power
10-BIT ANALOG-TO-DIGITAL CONVERTER
鈥?14 channels (11 for the 42-pin package)
鈥?Single conversion in 8 碌sec
鈥?Fast, easy conversion from analog inputs
like temperature, pressure and fluid levels
to digital values for CPU processing
SIM
PORT C
3 CHANNEL
PWM
8
IRQ
CLOCK GENERATION MODULE WITH PLL
PORT D
8
COP
KBI
LVI
TEMP
鈥?Programmable clock frequency in integer
multiples of external crystal reference
鈥?Crystal reference of 32 kHz to 100 kHz
鈥?External clock option with or without PLL
CGMC
CURRENT
鈥?Provides high performance using low-cost,
low-frequency reference crystals
鈥?Reduces generated noise while still
providing high performance (up to 32 MHz
internal clock)
鈥?Fast, easy conversion from analog inputs
like temperature, pressure and fluid levels
to digital values for CPU processing
TBM
8-BIT PULSE-WIDTH MODULATION
鈥?3 independent PWM signals
鈥?Automatic phase control
鈥?125 nsec resolution at 8 MHz bus
鈥?Provides multiple motor or multi-phase
control capability
鈥?Precise phase difference between PWM
output signals
For More Information On This Product,
Go to: www.freescale.com
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