下面是关于SM5964芯片的主要内部特征介绍，以方便广大客户及芯片解密工程师在解密过程中进行技术理解和沟通。
　　SM5964单片机解密以及其他典型的SYNCMOS系列芯片解密是邦凯芯片解密研究所目前可提供高效可靠解密方案的典型芯片系列，针对SM5964单片机等SYNCMOS系列芯片，邦凯芯片解密研究所的解密技术已经较为成熟，解密成功率高、周期短、价格低、解密可靠性强。
　　The SM5964 series product is an 8 - bit single chip micro controller with 64KB flash & 1K byte RAM embedded. It has In-System Programming (ISP) function and is a derivative of the 8052 micro controller family. It has 5-channel SPWM build-in. User can access on-chip expanded RAM with easier and faster way by its ‘bank mapping direct addressing mode’ scheme. With its hardware features and powerful instruction set, it’s straight forward to make it a versatile and cost effective controller for those applications which demand up to 32 I/O pins for PDIP package or up to 36 I/O pins for PLCC/QFP package, or applications which need up to 64K byte flash memory either for program or for data or mixed.
　　To program the on-chip flash memory, a commercial writer is available to do it in parallel programming method. The on-chip flash memory can be programmed in either parallel or serial interface with its ISP feature.
　　SM5964 Features
　　Working voltage: 4.5V through 5.5V
　　General 8052 family compatible
　　12 clocks per machine cycle
　　64K byte on chip flash memory with In-System
　　Programming (ISP) capability
　　1024 byte on chip data RAM
　　Three 16 bit Timers/Counters
　　One Watch Dog Timer
　　Four 8-bit I/O ports for PDIP package
　　Four 8-bit I/O ports + one 4-bit I/O ports
　　for PLCC or QFP package
　　Full duplex serial channel
　　Bit operation instruction
　　Industrial Level
　　8-bit Unsigned Division
　　8-bit Unsigned Multiply
　　BCD arithmetic
　　Direct Addressing
　　Indirect Addressing
　　Nested Interrupt
　　Two priority level interrupt
　　A serial I/O port
　　Power save modes:
　　Idle mode and Power down mode
　　Code protection function
　　Low EMI (inhibit ALE)
　　Reset with address $0000 blank initiate ISP service program
　　ISP service program space configurable in N*512byte
　　(N=0 to 8) size
　　Bank mapping direct addressing mode for access on-chip
　　RAM
　　Five channel Specific PWM (SPWM) build-in with P1.3 ~ P1.7
　　如果客户有SM5964单片机解密等SYNCMOS芯片解密需求，欢迎与邦凯科技商务中心联系，我们将根据您的具体解密需求提供最值得信赖的技术支持与服务，详情请咨询
　　邦凯科技芯片解密咨询热线：086-0755-83003639
　　E-mail：market2@pcblab.net