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Target Applications
Single-phase electricity meters•
Low-end utility metering•
Portable medical equipment•
Thermostats•
Automated test equipment•
Industrial process control and •
measurement
Sensor interfacing•
Digital scales•
Overview
Maximize battery life, measure more precisely
and make development easier with Freescale’s
MC9S08LH64/36. The 16-bit SAR delivers
outstanding precision to meet the needs of
entry-level metering and medical applications.
Cost is reduced with the integration of an
LCD driver which supports more segments
with fewer pins. Additionally, the MCU is
the industry’s best-in-class ultra-low-power
MCU with LCD for long operation in battery-
powered applications. These features are ideal
for smart metering and medical applications
such as glucometers and pulse oximeters.
Provides entry level flash-size part (64 KB)
for cost-conscious, single-phase, electricity
meter designs. The enhanced ADC, along with
low-power technology, is ideal for electricity
meters and medical devices operated by
battery for more than five years.
Development Tools
Cost-Effective Development
TWR-S08LH64 ($69USD)
TWR-S08LH64-KIT ($99USD)
The MC9S08LH64 evaluation and
demonstration board can be purchased
individually or as part of a complete kit for
quick and easy development.
TWR-S08LH64 features the MC9S08LH64 •
MCU in a 80-pin LQFP package
TOWER SYSTEM
32-bit Microcontrollers
MC9S08LH64/36
Smart metering and medical design made easy
Features Benefits
S08 Central Processor Unit (CPU)
Up to 40 Mhz CPI at 3.6V to 2.1V•
Up to 20 MHz CPU at 2.1V to 1.8V across temperature •
range of -40°C to +85°C
Offers high performance, even at low voltage levels for battery-operated •
applications
Provides bus speed operation of 10 MHz from 1.8V to 3.6V•
HCS08 instruction set with added BGND instruction• Easy to learn and use•
Backward object code compatibility with 68HC08 and 68HC05 for reuse of •
existing libraries
BGND allows user to enter background debug mode that takes advantage of •
the on-chip in-circuit emulator (ICE)
Enablement and Development Support
Low-cost, reconfigurable Tower evaluation and •
demonstration platform
Speeds time to market and enables advances development through •
rapid prototyping
Breakpoint capability• Allows single breakpoint setting during in-circuit debugging (plus two or more •
breakpoints in on-chip debug module)
Power-Saving Features
Two ultra-low-power stop modes, one of which allows •
limited use of peripherals
Allows continued application sampling in a reduced power state, which •
extends battery life
New low-power run and wait modes• Allows use of all chip peripherals in a low-power state•
6 μs typical wake-up time from stop mode• Enables faster execution out of stop modes•
Internal clock source (ICS) module containing a frequency-•
locked loop (FLL) controlled by internal or external reference
Provides choice of frequencies on the fly•
Reducing frequency saves current•
Ultra-low-power oscillator (OSC)• Accurate timebase in low-power modes•
Clock gating disables clocks to unused peripherals• Provides flexibility to turn off individual modules•
Reduces power consumption•
16-bit Analog to Digital Converter for Metering Applications
16-bit resolution ADC with 4.0625 μs sampling rate in •
16-bit single ended mode and sample times as fast as 2.04
μs in 8 bit mode
Sampling rate and resolution makes 9S08LH an ideal MCU integrated solution •
for energy metering
One differential ADC input, and 8 single-ended ADC inputs •
or 10 single-ended inputs
Having 10 channels allows up to ten analog devices to be sampled. The •
differential channel ideal for metering
Automatic compare function and hardware average function• Hardware averaging increases effective sensitivity for noise protection•
Internal temperature sensor• Easily measure ambient temperature •
Selectable voltage reference• Select between internal or external reference voltages. Internal VREFO allows •
a trimmable 1.15V reference source for ADC
Operation in low-power modes • Continue operating while saving power•
Built in self-calibration with user configurable offset register• Minimize offset and gain errors. User configurable offset register can be used •
for custom calibration
Hardware triggers using two TPM channels or TOD. Two •
control and result register
Allow back-to-back conversion of two different ADC channels •
Input clock selectable from up to four sources and •
configurable sample time and conversion speed/power
Great flexibility to customize your application and fulfill your needs•
LCD Driver and Internal Charge Pump
Integrated LCD driver supports both standard 3V and 5V •
LCD glass
Gives you flexibility when selecting the ideal glass for your application with •
respect to display quality, cost and power
Does not require expensive “chip-on-glass” display•
Configurable display for 8 x 36 or 4 x 40 segment display• Up to eight-character alphanumeric display (six segment based), •
perfect for scrolling text with simple display.
Allows high mix numbers, text and icons•
