HS23P1820 is 8-bit MCU manufactured by low-power and high-speed CMOS process. It has built-in 1k*14 bit ROM and 64Byte SRAM, including three 12 bit PWM and configurable port comparator module.

◆ 42 RISC instructions, except that the jump instruction is two cycles, all instructions are single cycle

◆ 14-bit wide instruction, 8-bit wide data path, 5-level deep hardware stack

◆ Support GOTO instruction full ROM jump, support full ROM subroutine call

◆ 1K×14 program memory

◆ 64 x 8 bit universal register

◆ Direct and indirect addressing

◆ 8 bit real-time clock with 1 programmable predivider (TC0)

◆ 12 bit real-time clock with 1 programmable predivider (TP0)

◆ Configurable port comparator resources

◆ Internal power reset circuit (POR), built-in undervoltage reset (BOR)

◆ Power-on reset timer (PWRT) and oscillator start timer (OST)

◆ Watchdog timer(WDT) with high reliability of internal crystal, enabled or disabled by software

◆ one group of I/O ports can be configured with pull-up, pull-down, and leak-open states

◆ 4 working modes can be switched at will: normal mode, low speed mode, sleep mode and green mode

◆ Wake up sleep: INT/INT1 pin interrupt, IOB input state change, TC0 overflow wake up, COMP wake up

◆ Wake up green: INT/INT1 pin interrupt, IOB input state change, TC0, TP0 overflow wake up, COMP wake up Energy-saving sleep mode, programmable code protection

◆ Optional oscillator options: internal high speed oscillator, internal low speed oscillator, external low speed crystal oscillator

◆ 6 kinds of interrupts available: TC0 overflow interrupt, IOB port change interrupt, INT/INT1 interrupt, TP0 overflow interrupt, interrupts for comp comparisons

◆ Wide operating voltage range: 2.2V to 5.5V