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W78E52B-24芯片研究解密服务

时间:2012-05-25 08:45:04

世纪芯始终坚持技术制胜、实力当先的策略服务客户,以低姿态、高效率、低成本、高成功率向各行业领域提供项目发的全程芯片解密的技术支持与完整解决方案,在业内赞誉有加。这里,我们仅以W78E52B-24芯片为例,针对其性能特征做简单介绍:
GENERAL DESCRIPTION
The W78E52B is an 8-bit microcontroller which can accommodate a wider frequency range with low power consumption. The instruction set for the W78E52B is fully compatible with the standard 8051.The W78E52B contains an 8K bytes MTP 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 MTP-ROM inside the W78E52B allows the program memory to be programmed and read electronically. Once the code is confirmed, the user can protect the code for security.
FEATURES
·Fully static design 8-bit CMOS microcontroller
·Wide supply voltage of 4.5V to 5.5V
·256 bytes of on-chip scratchpad RAM
·8 KB electrically erasable/programmable MTP-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
·Packages:
- DIP 40: W78E52B-24/40
- PLCC 44: W78E52BP-24/40
- PQFP 44: W78E52BF-24/40
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