Operating Conditions

l  2.0V~5.5V Vcc Voltage Range

l  -40℃ ~ +105℃ Temperature Range

ESD&EFT

l  ESD 6KV

l  EFT 4KV

Package

l  28 PIN: SOP28 / TSSOP28

CPU

l  Super-high-speed 1T 8051 core

l  The instruction set compatible with 8051

l  The execution speed is about twice that of other 1T 8051

l  Double data pointers (DPTRs)

Storage

l  32K bytes Flash ROM

n  Divided into 64 sectors

n  512 bytes per sector

n  Can be rewritten 100,000 times

n  The data written-in has more than 100-year preservation life in the ambient temperature of 25℃

l  IAP (In Application Programming): The area allowed IAP operation in Flash can be set to 0K,1K,2K or 32K by Customer Option.

l  BootLoader: Built-in 1K bytes LDROM

n  Boot from APROM or LDROM can be selected through the CODE OPTION Settings item

l  Unique ID: 96 bit unique ID memory

l  SRAM:

n  Internal 256 bytes of in-chip direct access RAM

n  4 Kbytes of external RAM (XRAM)

n  16 bytes Indirect access RAM in the chip read and write PWM duty cycle SFR: 1040H~104FH 16 bytes in total

Flash Programming and Emulation

l   2-wire JTAG programming and emulation interface

Clock Source

l  Built-in high frequency 32MHz oscillator (HRC)

n  The system clock frequency (fsys) of the IC can be selected and set by the programmer as: 32/16/8/4MHz

n  Frequency Error:

u  Within ±1% @ -20 ~ 85℃

u  Within ±2% @ -40 ~ 105℃

n  The system clock can be automatically calibrated by 32.768kHz external crystal oscillator, after calibration HRC accuracy can be infinitely close to the accuracy of external 32.768kHz crystal oscillator.

l  Built-in low-frequency crystal oscillator circuit: 32.768k oscillator can be connected externally as a Base Timer clock source.

l  Built-in low-frequency 32.768kHz oscillator (LRC): used as the clock source for Base Timer and WDT.

Low-voltage Reset (LVR)

l   4 options of reset voltage: 4.3/3.7/ 2.9/1.9V, the default value can be selected by the Customer Option

Interrupts (INT)

l  Up to 16 interrupt sources including Timer0~Timer4, INT0~2, ADC, PWM, UART, USCI0~2, Base Timer, TK

l  External interrupt INT0~2 contains 3 interrupt vectors, 13 intermediate fractures. All can set up rising edge, falling edge, double edge interrupt.

l  Two-level interrupt priority capability

Digital Peripheral

l  GPIO

n  Up to 26 bidirectional independently controllable I/O ports, independent setting of pull-up resistors

n  All I/Os have large sink current drive capability (50mA)

l  Built-in WDT, optional clock frequency division ratio

l  5 Timers: Timer0~4

l  8-channel 16-bit PWM

n  Can be set to independent mode or complementary mode: 8 channels of PWM in the independent mode, the duty cycle can be set separately

n  In complementary mode, four sets of complementary PWM waveforms with dead zones can be output simultaneously

n  The output waveform can be reversed and can be set to center-aligned or edge-aligned

n  Fault detection mechanism

l  One independent UART communication port UART0

l  Three UART/SPI/TWI communication interfaces (USCI)

l  Integrated with 16 * 16-bit hardware Multiplier-Divide Unit (MDU)

l  Built-in CRC check module

Analog Peripheral

l  23-channel dual-mode TouchKey (TK) circuit.

n  High-sensitivity mode applicable to TouchKey sensor, proximity induction and other TouchKey applications featuring high requirements on sensitivity

n  High reliability mode features very strong anti-interference which is able to pass 10V dynamic CS test

n  Support self-capacitance programme and reciprocal- capacitance mode.

n  Support  low power consumption mode.

n  Complete development support: High-flexible touch software library, intelligent software of debugging.

l  11-channel 12-bit high-speed ADC

n  1MHz sampling clock

n  The ADC reference voltages is optional:

u  Internal 2.048V

u  Internal 1.024V

u  VDD

n  One internal channel can measure the voltage of the power supply

Power Saving Mode

l  IDLE Mode: can be woken up by any interrupt

l  STOP Mode: can be woken up by INT0~2,  Base Timer and TK.