High Performance 8-bit RISC MCU · DC-24MHz operation · Compatible with 8051 · 160ns internal interrupt response at 24 MHz · Single cycle per byte fetch · All instructions are single-cycled except branching instructions
Program Memory and Data Memory · 16K Bytes OTP program memory · 384 Bytes internal SRAM for data/stack memory · External 64K Bytes external memory interface compatibles to true 8051 · Two data pointers for indirect addressing
Interrupt Features · 14 vectored interrupts · 2-level interrupt priority · External wakeup/interrupt capabilities on 3 GPIO pins and USB PHY Flexible I/O · 32 GPIO pins organized in 4 ports. · Support open-drain or push-pull driving · CMOS/TTL-level Schmitt triggered inputs · Optional internal 20Kohm pull-up resistor · 6mA sink/source current driving capability
Digital Peripheral Features · Two 16-bit timers compatible with 8051’s timer0 timer1 Enhanced 8052’s timer 2. Support Capture/Reload, PWM mode and clock generation
·Real-time wake up for software clock implementation. ·Watchdog Timer with on-chip 16KHz RC oscillator · High-speed full-duplex 8051-compatible serial port Enhanced SPI with double-buffer for read and write. Operates up to 12Mb/s · GPSI with 16-bit/32-bit packet header, for interfacing RF module, Ethernet PHY and for inter-chip communication · Full-speed USB 2.0 Device controller module with 3 endpoints (including endpoint 0) and 208 bytes FIFO
Endpoint 0: 16 bytes
Endpoint 1: IN 64 bytes / OUT 64 bytes Endpoint 2: IN 32 bytes / OUT 32 bytes
Analog Peripheral Features ·4~24MHz Crystal Oscillator ·32,768 Hz Real-time Crystal Oscillator ·16KHz RC oscillator ·Full-speed USB 2.0 Device PHY ·Digital PLL for 48MHz clock generation ·8 channels 8-bit ADC ·Power-on reset ·On-chip regulator for 5V to 3.3V conversion
Programming and Debugging Support ·In-System Programming (ISP) support ·In-System Debugging (ISD) support
