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.

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

◆   2K*16 ROM on-chip

◆   Direct and indirect addressing

◆   Four 8-bit timer/counter:

                TC0：external event counter/PWM0/ Buzzer output.

                TC1：external event counter/PWM1/ Buzzer output. 

                TC2：external event counter/PWM2/ Buzzer output.

                TC3：external event counter/PWM3(PWM duty cycle configurable 1/256)

◆   Built-in POR, BOR.

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

◆   Built-in watch-dog (WDT).

◆   Two oscillation modes

                Built-in IHRC 16MHz

                Built-in ILRC 32KHz.

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

◆   96*8 bit SRAM

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

◆   5 levels stack buffer

◆   7 interrupt sources

                5 internal interrupts：TC0, TC1, TC2, TC3, ADC.

                2 external interrupts：INT0, INT1

◆   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.