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HS23P2721 product is 8-bit micro-controller by CMOS process of low power-consumption and high speed which include a 12 bit ADC and 2K*16 bit EPROM on-chip.

¡ô  Most of instruction are one cycle only. Except JMP/CALL instruction, They are two cycle.

¡ô   2K*16 ROM on-chip

¡ô   Direct and indirect addressing

¡ô   Four 8-bit timer/counter:

                TC0£ºexternal event counter/PWM0/ Buzzer output.

                TC1£ºexternal event counter/PWM1/ Buzzer output. 

                TC2£ºexternal event counter/PWM2/ Buzzer output.

                TC3£ºexternal event counter/PWM3(PWM duty cycle configurable 1/256)

¡ô   Built-in POR, BOR.

¡ô   Built-in power on reset time (PWRT) and oscillator start-up time (OSCT).

¡ô   Built-in watch-dog (WDT).

¡ô   Two oscillation modes

                Built-in IHRC 16MHz

                Built-in ILRC 32KHz.

¡ô   ONE safety bit in code-register protect program not be read.

¡ô   96*8 bit SRAM

¡ô   Three sets of standard Bi-directional I/O ports.

¡ô   5 levels stack buffer

¡ô   7 interrupt sources

                5 internal interrupts£ºTC0, TC1, TC2, TC3, ADC.

                2 external interrupts£ºINT0, INT1

¡ô   ADC

                Five external ADC input

                One internal battery measurement

                Internal AD reference voltage£¨VDD¡¢4V¡¢3V¡¢2V£©

                Built-in adjustable oscillator (IRC 16MHz).The maximum frequency can be configured as 24MHZ, and the frequency can be adjusted by register software.