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W78E51B-24/40 PDF预览

W78E51B-24/40

更新时间: 2024-11-18 19:54:59
品牌 Logo 应用领域
华邦 - WINBOND 可编程只读存储器电动程控只读存储器电可擦编程只读存储器时钟微控制器光电二极管外围集成电路
页数 文件大小 规格书
22页 324K
描述
Microcontroller, 8-Bit, EEPROM, 40MHz, CMOS, PDIP40, DIP-40

W78E51B-24/40 技术参数

生命周期:Obsolete零件包装代码:DIP
包装说明:DIP,针数:40
Reach Compliance Code:unknownECCN代码:3A991.A.2
HTS代码:8542.31.00.01风险等级:5.8
具有ADC:NO地址总线宽度:16
位大小:8最大时钟频率:40 MHz
DAC 通道:NODMA 通道:NO
外部数据总线宽度:8JESD-30 代码:R-PDIP-T40
JESD-609代码:e3I/O 线路数量:32
端子数量:40最高工作温度:70 °C
最低工作温度:PWM 通道:NO
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装形状:RECTANGULAR封装形式:IN-LINE
认证状态:Not QualifiedROM可编程性:EEPROM
速度:40 MHz最大供电电压:5.5 V
最小供电电压:4.5 V标称供电电压:5 V
表面贴装:NO技术:CMOS
温度等级:COMMERCIAL端子面层:MATTE TIN
端子形式:THROUGH-HOLE端子位置:DUAL
uPs/uCs/外围集成电路类型:MICROCONTROLLERBase Number Matches:1

W78E51B-24/40 数据手册

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W78E51B  
8-BIT MICROCONTROLLER  
1. GENERAL DESCRIPTION  
The W78E51B is an 8-bit microcontroller which can accommodate a wider frequency range with low  
power consumption. The instruction set for the W78E51B is fully compatible with the standard 8051.  
The W78E51B contains an 4K bytes Flash EPROM; a 128 bytes RAM; four 8-bit bi-directional and bit-  
addressable I/O ports; an additional 4-bit I/O port P4; two 16-bit timer/counters; a hardware watchdog  
timer and a serial port. These peripherals are supported by seven sources two-level interrupt  
capability. To facilitate programming and verification, the Flash EPROM inside the W78E51B allows  
the program memory to be programmed and read electronically. Once the code is confirmed, the user  
can protect the code for security.  
The W78E51B microcontroller has two power reduction modes, idle mode and power-down mode,  
both of which are software selectable. The idle mode turns off the processor clock but allows for  
continued peripheral operation. The power-down mode stops the crystal oscillator for minimum power  
consumption. The external clock can be stopped at any time and in any state without affecting the  
processor.  
2. FEATURES  
· Fully static design 8-bit CMOS microcontroller  
· Wide supply voltage of 4.5V to 5.5V  
· 128 bytes of on-chip scratchpad RAM  
· 4 KB On-chip Flash EPROM  
· 64 KB program memory address space  
· 64 KB data memory address space  
· Four 8-bit bi-directional ports  
· One extra 4-bit bit-addressable I/O port, additional INT2 / INT3  
(available on 44-pin PLCC/QFP package)  
· Two 16-bit timer/counters  
· One full duplex serial port(UART)  
· Watchdog Timer  
· Seven sources, two-level interrupt capability  
· EMI reduction mode  
· Built-in power management  
· Code protection mechanism  
· Packages:  
- DIP 40: W78E51B-24/40  
- PLCC 44: W78E51BP-24/40  
- PQFP 44: W78E51BF-24/40  
Publication Release Date: July 11, 2001  
- 1 -  
Revision A4  

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