TWR-S08LH64【PDF 1/2 页】TOWER SYSTEM S08LH64

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TOWER SYSTEM

32-bit Microcontrollers

MC9S08LH64/36

Smart metering and medical design made easy

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-

Features

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

? HCS08 instruction set with added BGND instruction

Enablement and Development Support

? Low-cost, reconfigurable Tower evaluation and

demonstration platform

? Breakpoint capability

Power-Saving Features

? Two ultra-low-power stop modes, one of which allows

limited use of peripherals

? New low-power run and wait modes

? 6 μs typical wake-up time from stop mode

? Internal clock source (ICS) module containing a frequency-

locked loop (FLL) controlled by internal or external reference

? Ultra-low-power oscillator (OSC)

? Clock gating disables clocks to unused peripherals

Benefits

? 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

? 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)

? Speeds time to market and enables advances development through

rapid prototyping

? Allows single breakpoint setting during in-circuit debugging (plus two or more

breakpoints in on-chip debug module)

? Allows continued application sampling in a reduced power state, which

extends battery life

? 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

? Reducing frequency saves current

? Accurate timebase in low-power modes

? Provides flexibility to turn off individual modules

powered applications. These features are ideal

for smart metering and medical applications

? Reduces power consumption

16-bit Analog to Digital Converter for Metering 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

? 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

? One differential ADC input, and 8 single-ended ADC inputs

or 10 single-ended inputs

? Automatic compare function and hardware average function

? Internal temperature sensor

? Selectable voltage reference

? Operation in low-power modes

? Built in self-calibration with user configurable offset register

? Hardware triggers using two TPM channels or TOD. Two

control and result register

? Input clock selectable from up to four sources and

configurable sample time and conversion speed/power

LCD Driver and Internal Charge Pump

? Integrated LCD driver supports both standard 3V and 5V

LCD glass

? Configurable display for 8 x 36 or 4 x 40 segment display

? Sampling rate and resolution makes 9S08LH an ideal MCU integrated solution

for energy metering

? Having 10 channels allows up to ten analog devices to be sampled. The

differential channel ideal for metering

? Hardware averaging increases effective sensitivity for noise protection

? Easily measure ambient temperature

? Select between internal or external reference voltages. Internal VREFO allows

a trimmable 1.15V reference source for ADC

? Continue operating while saving power

? Minimize offset and gain errors. User configurable offset register can be used

for custom calibration

? Allow back-to-back conversion of two different ADC channels

? Great flexibility to customize your application and fulfill your needs

? 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

? Up to eight-character alphanumeric display (six segment based),

perfect for scrolling text with simple display.

? Allows high mix numbers, text and icons

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