EPM7128S

　龙芯世纪在EPM7128S单片机解密过程中，对芯片内部结构及其加解密特征进行技术分析是解密工程师的一项必修课，因为只有充分理解单片机内部结构原理等技术信息，工程师才能准确进行方案开发，确定最可靠、成功率最高的
　　以下是我们对EPM7128S单片机的简单介绍供各位参考：
　　High-performance, EEPROM-based programmable logic devices
　　(PLDs) based on second-generation MAX? architecture
　　■ 5.0-V in-system programmability (ISP) through the built-in
　　IEEE Std. 1149.1 Joint Test Action Group (JTAG) interface available in
　　MAX 7000S devices
　　– ISP circuitry compatible with IEEE Std. 1532
　　■ Includes 5.0-V MAX 7000 devices and 5.0-V ISP-based MAX 7000S
　　devices
　　■ Built-in JTAG boundary-scan test (BST) circuitry in MAX 7000S
　　devices with 128 or more macrocells
　　■ Complete EPLD family with logic densities ranging from 600 to
　　5,000 usable gates (see Tables 1 and 2)
　　■ 5-ns pin-to-pin logic delays with up to 175.4-MHz counter
　　frequencies (including interconnect)
　　■ PCI-compliant devices available