功能簡介
• Fully-static-design 8-bit Turbo 51 CMOS microcontroller up to 40MHz
• 128-KB of in-system-programmable Flash EPROM (AP Flash EPROM)
• 4-KB of Auxiliary Flash EPROM for the loader program (LD Flash EPROM)
• 1-KB auxiliary RAM, software-selectable, accessed by MOVX instruction
• 256 bytes of scratch-pad RAM
• Four 8-bit bi-directional ports; Port 0 has internal pull-up resisters enabled by software.
• All pins with Schmitt trigger inputs
• One 4-bit multipurpose I/O port4 with Chips select(CS) and boot function
• Three 16-bit timers
• 6 channel of 8-bit PWM
• One enhanced full-duplex UART with framing-error detection and automatic address recognition
• 2-channels of I2C with master/slave capability
• 10-bit ADC with 4-channel inputs
• Software programmable access cycle to external RAM/peripherals
• 10 interrupt sources with two levels of priority
• Software reset function
• Optional H/L state of ALE/PSEN during power down mode
• Built-in power management
• Code protection
• Development tool
— JTAG ICE(In Circuit Emulator) tool