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參數(shù)資料
| 型號(hào)： | W78E51 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT MTP Monitor Microcontroller(多次可編程的8位的監(jiān)視微控制器) |
| 中文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | DIP-40 |
| 文件頁(yè)數(shù)： | 5/19頁(yè) |
| 文件大小： | 283K |
| 代理商： | W78E51 |
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W78E51
Publication Release Date: October 1997
- 5 -
Revision A3
BLOCK DIAGRAM
SFR
Port 0
Port 1
Port 2
CPU
Data Bus
Port 3
Alternate
Serial
Port
Timer 0
CORE
FLASH
4K
Bytes
Interrupt
Timer 1
RAM
128
Bytes
INT 0
INT 1
EEPROM
FUNCTIONAL DESCRIPTION
The W78E51 architecture consists of a core controller surrounded by various registers, four general
purpose I/O ports, 128 bytes of RAM, three timer/counters, and a serial port. The processor supports
111 different opcodes and references both a 64K program address space and a 64K data storage
space.
Timers 0 and 1
Timers 0 and 1 each consist of two 8-bit data registers. These are called TL0 and TH0 for Timer 0,
TL1 and TH1 for Timer 1. The TCON and TMOD registers provide control functions for timers 0, 1.
Clock
The W78E51 is designed to be used with either a crystal oscillator or an external clock. Internally, the
clock is divided by two before it is used. This makes the W78E51 relatively insensitive to duty cycle
variations in the clock.
Crystal Oscillator
The W78E51 incorporates a built-in crystal oscillator. To make the oscillator work, a crystal must be
connected across pins XTAL1 and XTAL2. In addition, a load capacitor must be connected from each
pin to ground,and a resistor must also be connected from XTAL1 to XTAL2 to provide a DC bias
when the crystal frequency is above 24 MHz.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W78E52 | 8-BIT MTP Monitor Microcontroller(多次可編程的8位的監(jiān)視微控制器) |
| W78E56B | 8-BIT Microcontroller(8位的微控制器) |
| W78E516BP-24 | 8-BIT MICROCONTROLLER |
| W78E516BP-40 | 8-BIT MICROCONTROLLER |
| W78E516 | 8-BIT MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W78E51-16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78E51-24 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78E51-33 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78E51-40 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78E516 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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