Ultra-Low-Power Microcontrollers
MC9S08QE32/16
Taking the lead in low power
Target Applications
• Low-power wireless applications
• Gas, water and heater meters
• HVAC and building control
• Security systems including sensors and
• Personal health care devices
• Cell phone accessories
• Commercial smoke detectors
• Toys
Overview
Achieving raw performance is no longer the
number one issue—it’s now “performance within
an energy budget.” Freescale understands this
challenge and offers a wide portfolio of S08
devices that help you reach target performance
levels while minimizing low power in your
design. The QE family demonstrates extreme
energy efficiency for ultra-long operating life
in battery-powered applications.
Further expanding the QE family portfolio, the
QE32 provides great flexibility for customers to
balance performance and power consumption.
The QE32 offers low-power features such as
two ultra-low-power stop modes, low-power run
and wait modes, 6 usec wake-up time, ultra-
low-power external oscillator and clock gating
registers to disable clocks to unused peripherals.
The QE32 offers up to 32 KB of flash memory,
a 10-channel, 12-bit resolution analog-to-digital
converter (ADC), abundant peripherals such as
three timers/PWM, two SCI, SPI, I
analog comparators. QE32 can operate at 1.8V
voltage supply and run up to 50.33 MHz
core frequency.
To test your application with the QE family, take
the Battery Calculator challenge, available at
www.freescale.com/lowpower.
home alarm
2
C and two
SO8QE32/16 Block Diagram
Power-Saving Features
• Clock gating disables clocks to unused peripherals
8-bit HCS08 Central Processing Unit (CPU)
On-Chip Memory
Features
• Two ultra-low-power stop modes, one of which
• Low-power run and wait modes
• 6 µs typical wake up time from stop mode
• Internal clock Source (ICS)—module containing a
• Oscillator (OSC)—loop-control Pierce oscillator;
• Up to 50.33 MHz HCS08 CPU at 3.6V to 2.4V,
• HCS08 instruction set with added BGND instruction
• Up to 32 KB flash read/program/erase over full
• Up to range of 1.8V to 3.6V RAM
allows limited use of peripherals
frequency locked-loop (FLL) controlled by internal
or external reference
crystal or ceramic resonator range of 31.25 kHz to
38.4 kHz or 1 MHz to 16 MHz
40 MHz CPU at 2.4 V to 2.1 V and 20 MHz CPU
at 2.1 V to 1.8 V across temperature range of
-40 °C to +85 °C
operating voltage and temperature
25.165 MHz Bus Speed
S08 CPU
2 x 3-ch., 16-bit
6-ch., 16-bit
Timer
Timer
Broadcast Mode
• Provides flexibility to turn off individual modules
• Reduces power consumption
Benefits
• Allows continued application sampling in a reduced
• Allows use of all chip peripherals in a low-power state
• Enables faster execution out of stop modes
• Provides choice of frequencies on-the-fly.
• Includes ultra-low-power OSC for accurate
• Offers high performance, even at low voltage levels
• Provides bus speed operation from 10 MHz to
• Easy to learn and use architecture
• Backward object code compatibility with 68HC08 and
• Allows for efficient, compact module coding in
• BGND allows user to enter background debug
• Allows user to take full advantage of
• Security circuitry prevents unauthorized access
2 x SCI
I
2
power state which extends battery life
Reducing frequency saves current.
timebase in low-power modes
for battery-operated applications
25.165 MHz under voltage from 1.8V to 3.6V
68HC05 for reuse of existing libraries can still be used
assembly or C compiler
mode that takes advantage of on-chip
in-circuit emulator (ICE)
in-application, reprogrammability benefits in
virtually any environment
to RAM and flash contents to reduce system
power consumption
C with
32 KB
16 KB
Flash
Flash
8-bit Fact Sheet
2 KB
RAM
1 KB
RAM