Freescale MC9S08ELxx 8位MCU开发方案

Freescale 公司的MC9S08EL32 系列和MC9S08SL16系列是高性能的HCS08 8位MCU.所有的系列产品采用增强的40MHz HCS08内核,并集成了各种模块,不同容量存储器以北及存储器类型,并提供不同的封装类型.主要应用在汽车电子如汽车传感器和光控制, 方向盘,座位控制,车内气候控制以及车门,车窗控制等.本文介绍了MC9S08EL32 系列和MC9S08SL16系列的主要特性, MC9S08EL32和MC9S08EL16 方框图, MC9S08SL16 和MC9S08SL8方框图以及MC9S08EL32基本的系统连接图与DEMO9S08EL32演示板的主要特性.

The MC9S08EL32 Series and MC9S08SL16 Series are members of the low-cost, high-performance HCS08 Family of 8-bit microcontroller units (MCUs). All MCUs in the family use the enhanced HCS08 core and are available with a variety of modules, memory sizes, memory types, and package types.

MC9S08EL32 主要特性:
8-Bit HCS08 Central Processor Unit (CPU)
40-MHz HCS08 CPU (central processor unit)
HC08 instruction set with added BGND instruction
Support for up to 32 interrupt/reset sources
On-Chip Memory
FLASH read/program/erase over full operating voltage and temperature
EEPROM in-circuit programmable memory; program and erase while executing FLASH; erase abort
Random-access memory (RAM)
Security circuitry to prevent unauthorized access to RAM and NVM contents
Power-Saving Modes
Two very low-power stop modes
Reduced power wait mode
Very low-power real-time interrupt for use in run, wait, and stop
Clock Source Options
Oscillator (XOSC) — Loop-control Pierce oscillator; Crystal or ceramic resonator range of 31.25 kHz to 38.4 kHz or 1 MHz to 16 MHz
Internal clock source (ICS) — Contains a frequency-locked loop (FLL) controlled by internal or external reference; precision trimming of internal reference allows 0.2% resolution and 2% deviation over temperature and voltage; supports bus frequencies from 2–20 MHz
System Protection
Watchdog computer operating properly (COP) reset with option to run from dedicated 1-kHz internal clock source or bus clock
Low-voltage detection with reset or interrupt; selectable trip points
Illegal opcode detection with reset
Illegal address detection with reset
FLASH and EEPROM block protect
Development Support
Single-wire background debug interface
Breakpoint capability allows single breakpoint setting during in-circuit debugging (plus two more breakpoints in the on-chip debug module)

In-circuit emulation (ICE) debug module — contains two comparators and nine trigger modes; eight-deep FIFO for storing change-of-flow address and event-only data; supports both tag and force breakpoints
Peripherals

ADC — 16-channel, 10-bit resolution, 2.5 μs conversion time, automatic compare function, temperature sensor, internal bandgap reference channel; runs in stop3

ACMPx — Two analog comparators with selectable interrupt on rising, falling, or either
edge of comparator output; compare option to fixed internal bandgap reference voltage; output can optionally be routed to TPM module; runs in stop3

SCI — Full duplex non-return to zero (NRZ); LIN master extended break generation; LIN slave extended break detection; wake-up on active edge

SLIC — Supports LIN 2.0 and SAE J2602 protocols; up to 120 kbps, full LIN message
buffering, automatic bit rate and frame synchronization, checksum generation and verification, UART-like byte transfer mode

SPI — Full-duplex or single-wire bidirectional; double-buffered transmit and receive; master or slave mode; MSB-first or LSB-first shifting

IIC — Up to 100 kbps with maximum bus loading; Multi-master operation; Programmable slave address; Interrupt driven byte-by-byte data transfer

TPMx — One 4-channel (TPM1) and one 2-channel (TPM2); selectable input capture,
output compare, or buffered edge- or center-aligned PWM on each channel

RTC — 8-bit modulus real-time counter with binary or decimal based prescaler; external clock source for precise time base, time-of-day, calendar, or task scheduling functions; free running on-chip low power oscillator (1 kHz) for cyclic wake-up without external components
Input/Output
22 general purpose I/O pins
16 interrupt pins with selectable polarity
Hysteresis and configurable pull up device on all input pins; Configurable slew rate and drive strength on all output pins.
Package Options
28-TSSOP
20-TSSOP

MC9S08ELxx 目标应用:
Automotive
Roof: Sensor, Light Sensor, Light Control, Sun Roof.
Steering Wheel: Cruise Control, Wiper, Turning Light, Climate Control, Radio.
Seat: Seat Position Motors, Occupancy Sensor, Control Panel.
Engine: Sensors, Small Motors.
Climate: Small Motors, Control Panel
Door: Mirror, Central ECU, Mirror Switch, Window Lift, Seat Control Switch, Door Lock.




图1.MC9S08EL32和MC9S08EL16 方框图




图2.MC9S08SL16 和MC9S08SL8方框图




图3.MC9S08EL32基本的系统连接图

DEMO9S08EL32演示板

The DEMO9S08EL32 is a demonstration board for the 9S08EL and 9S08SL family of microcontrollers. Application development is quick and easy with the integrated USB-BDM, sample software tools, and examples. An optional BDM_PORT port is also provided to allow use of a BDM_PORT cable. Two, 40 pin connectors provide access to all I/O signals on the target MCU.



图4.DEMO9S08EL32演示板外形图

DEMO9S08EL32演示板主要特性:
MC9S08EL32, 28 TSSOP
32K Bytes Flash
1K Bytes RAM
512K Bytes EEPROM
Internal Oscillator
Integrated P&E USB-BDM
BDM_PORT header for BDM cable support (not installed)
LIN PHY with 2, 4-pos Molex connectors
MCU_PORT socket headers for access to MCU I/O signals
On-board +5V regulator
Optional Power from USB-BDM or MCU_PORT connector
Power Input Selection Jumpers
Power input from USB-BDM
Power input from on-board regulator
Power input from Connector J1
Optional Power output through Connector J1
User Components Provided
3 Push Switches; 2 User, 1 Reset
7 LED Indicators; 2 User, VDD, USB Power, USB Power Out
5K ohm POTs with LP Filter
Light Sensor with LP Filter and Op Amp

Jumpers
PWR_SEL
VX_EN
USER_EN
COM_SEL
Connectors
40-pin MCU I/O Connector
2.0mm Barrel Connector
BDM_PORT (not installed)
USB Connector
DB9 Connector