Datasheet 搜索 > 8位微控制器 > NXP（恩智浦） > MC908QB8CDWE 数据手册 > MC908QB8CDWE 用户编程技术手册 1/2 页
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MC908QB8CDWE 用户编程技术手册 - NXP（恩智浦）
制造商:
NXP（恩智浦）
分类:
8位微控制器
封装:
SOIC-16
描述:
NXP MC908QB8CDWE 微控制器, 8位, EEPROM 仿真器 Q, HC08Q, 8 MHz, 8 KB, 256 Byte, 16 引脚, SOIC
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MC908QB8CDWE数据手册
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MC908QB8/4
8-bit Microcontrollers
Overview
Freescale Semiconductor’s MC908QB8/4
microcontrollers (MCUs) help reduce system cost
by eliminating the need for external low-voltage
inhibit (LVI), external drivers with high-current
input/output (I/O) and external data EEPROM
and help reduce programming cost with fast
Flash programming. Other valuable features
include a 10-bit analog-to-digital converter
(ADC) and an internal clock oscillator. It helps
maximize efficiency and speed time to market
with the ability to change code in-application
with Flash and free professional-quality
development tools including a C compiler,
simulator, assembler, linker, Flash programmer
and auto-code generator, all specifically
geared to function with Freescale’s QY/QB
lines of MCUs.
Target Applications
HC08 CPU
4 KB/8 KB Flash
KBI
COP
256 B RAM
LVI
10 ch.,10-bit ADC
4-ch.,16-bit
Timer
Up to 13 GPIO
ESCI
SPI
Features Benefits
High-Performance 68HC08 CPU Core
> 8 MHz bus operation at 5V operation for
125 ns minimum instruction cycle time
> 4 MHz bus operation at 3V operation for
250 ns minimum instruction cycle time
> Efficient instruction set, including multiply
and divide
> 16 flexible addressing modes, including stack
relative with 16-bit stack pointer
> Easy to learn and use architecture
> Object compatible with 68HC05
> Allows for efficient, compact modular
coding in assembly or C compiler
Integrated Second-Generation Flash Memory
Internal Clock Oscillator
Up to 13 Bidirectional Input/Output (I/O) Lines
> High-current drive
> Programmable pull-ups/keyboard interrupt
> High-current I/O allows direct drive of LED
and other circuits to virtually eliminate external
drivers and reduce system costs
> Keyboard scan with programmable pull-ups
virtually eliminates external glue
logic when interfacing to
simple keypads
> 3.2 MHz nominal bus frequency
> ± 25 percent trimmable
> ± 5 percent accurate to 125°C
> ± 2 percent typical
> Can eliminate the cost of all external
clock components
> Helps to reduce board space
> Can eliminate electromagnetic interface (EMI)
generated from external clocks
> Allows option of external radio controller (RC),
external clock or external crystal/resonator
> Discrete
replacement
> Appliances
> Control systems
> Home and industrial
security systems
> Fluorescent light
ballasts
> Electromechanical
replacement
> Motion control
> In-application reprogrammable
> Extremely fast programming
• As fast as 32 µs/byte
• Up to 100x faster than most
embedded Flash
> Flash easily used for data EEPROM
• 10K minimum write/erase cycles
across temperature
• 100K typical
• Byte writeable
• No restrictions or special instructions to
access data in Flash program memory
> Flexible block protection and security
> Cost-effective programming changes and field
software upgrades via in-application
programmability and reprogrammability
> Virtually eliminates scrap, costly rework
and cost of socket
> The benefits of Flash at competitive one-time
programmable (OTP) prices
> Helps to reduce production programming
costs through ultra-fast programming
> Helps to reduce power and speed application
when writing nonvolatile data is required
> Virtually eliminates the need and cost for
external serial data EEPROM
> Easily performs table lookup and data
manipulation without slow and cumbersome
special table instructions
> Helps to protect code from
unauthorized reading
> Guards against unintentional writing/erasing of
user-programmable segments of code
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