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W78E54BF-24/40 PDF预览

W78E54BF-24/40

更新时间: 2024-11-18 21:10:43
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外围集成电路
页数 文件大小 规格书
24页 144K
描述
Microcontroller, 8-Bit, EEPROM, 40MHz, CMOS, PQFP44, PLASTIC, QFP-44

W78E54BF-24/40 技术参数

生命周期:Obsolete零件包装代码:QFP
包装说明:QFP,针数:44
Reach Compliance Code:unknownECCN代码:3A991.A.2
HTS代码:8542.31.00.01风险等级:5.84
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:S-PQFP-G44
I/O 线路数量:36端子数量:44
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:QFP封装形状:SQUARE
封装形式:FLATPACK认证状态:Not Qualified
ROM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:YES
技术:CMOS温度等级:COMMERCIAL
端子形式:GULL WING端子位置:QUAD
uPs/uCs/外围集成电路类型:MICROCONTROLLERBase Number Matches:1

W78E54BF-24/40 数据手册

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W78E54B  
8-BIT FLASH MICROCONTROLLER  
GENERAL DESCRIPTION  
The W78E54B is an 8-bit microcontroller which can accommodate a wider frequency range with low  
power consumption. The instruction set for the W78E54B is fully compatible with the standard 8051. The  
W78E54B contains an 16K bytes FLASH ROM (Multiple-Time Programmable ROM); a 256 bytes RAM;  
four 8-bit bi-directional and bit-addressable I/O ports; an additional 4-bit I/O port P4; three 16-bit  
timer/counters; a hardware watchdog timer and a serial port. These peripherals are supported by eight  
sources two-level interrupt capability. To facilitate programming and verification, the FLASH-ROM inside  
the W78E54B allows the program memory to be programmed and read electronically. Once the code is  
confirmed, the user can protect the code for security.  
The W78E54B 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.  
FEATURES  
· Fully static design 8-bit CMOS microcontroller  
· Wide supply voltage of 4.5V to 5.5V  
· 256 bytes of on-chip scratchpad RAM  
· 16 KB electrically erasable/programmable FLASH-ROM  
· 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)  
· Three 16-bit timer/counters  
· One full duplex serial port(UART)  
· Watchdog Timer  
· Eight sources, two-level interrupt capability  
· EMI reduction mode  
· Built-in power management  
· Code protection mechanism  
· Packages:  
- DIP 40: W78E54B-24/40  
- PLCC 44: W78E54BP-24/40  
- PQFP 44: W78E54BF-24/40  
Publication Release Date: January 1999  
- 1 -  
Revision A2  

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