High performance Core
Enhanced 8051 CPU
Single cycle instruction
Support 16-bit extended instruction
Maximum frequency @80MHz
Inside 8K OTP and 4K SRAM
Support 16 interrupt source
Support 4 level programmable interrupt priority
Flexible I/O
25 GPIO pins
All GPIO pins can be programmable as input or output individually
All GPIO pins are internal pull-up/pull-down selectable individually
CMOS/TTL level Schmitt triggered input
Support IO wake up/interrupt
Digital Peripheral Feature
One audio sample rate converter
One IIS controller, support single stereo channel
One full-duplex basic UART without DMA
One tran***it only UART with DMA
One IIC interface supports host and device mode
One 8-bit TIMER
Two 16-bit multi-function TIMERs, support capture and PWM mode
One comparator controller, support Hall sensor simulation
Watchdog
Analog Peripheral Features
RC，internal RC Oscillator, ~6.5MHz
HTC, internal low Temperature drift RC Oscillator, ~5MHz
10-bit high-precision 16-channel ADC (mainly as ADC Key, etc)
12-bit high-precision ADC (mainly as a recording)
16-bit high-precision DAC
Full Speed USB PHY
A capless XOSC, clock oscillation circuit, support 12MHz/24MHz
LVD, support power-down protection
LDO，5V-3.3V、5V-3.0V、5V-1.7V
MIC amplifier circuit
3-channel Rail-to-Rail COMPARATOR
General IO, support pull-up / pull-down, strong / weak output, Input, high resistance etc
