Datasheet HT68F2420 (Holtek) - 7

HT68F2420 HT68F2420 High Precision HIRC Flash MCU High Precision HIRC Flash MCU Pin Description
The function of each pin is listed in the following table, however the details behind how each pin is configured is contained in other sections of the datasheet. Note that the pin description refers to the largest package size, as a result some pins may not exist on smaller package types.
Pin Name Function OPT I/T O/T Description
PA0 PAPU PA0/ICPDA/ PAWU ST CMOS General purpose I/O. Register enabled pull-high and wake-up. OCDSDA ICPDA — ST CMOS ICP Address/Data OCDSDA — ST CMOS OCDS Address/Data, for EV chip only PA1 PA1 PAPU PAWU ST CMOS General purpose I/O. Register enabled pull-high and wake-up. PA2 PAPU PA2/ICPCK/ PAWU ST CMOS General purpose I/O. Register enabled pull-high and wake-up. OCDSCK ICPCK — ST — ICP Clock pin OCDSCK — ST — OCDS Clock pin, for EV chip only PA3~PA7 PA3~PA7 PAPU PAWU ST CMOS General purpose I/O. Register enabled pull-high and wake-up. PB0~PB7 PB0~PB7 PBPU PBWU ST CMOS General purpose I/O. Register enabled pull-high and wake-up. REM TSR1 — CMOS CMOS carrier output pin. REM/REMDRV REMDRV TSR1 — NMOS NMOS carrier output pin. VDD VDD — PWR — Digital positive power supply. VSS VSS — PWR — Digital negative power supply. VSS1 VSS1 — PWR — REMDRV negative power supply. Legend: I/T: Input type; O/T: Output type; OPT: Optional by register option; PWR: Power; ST: Schmitt Trigger input; CMOS: CMOS output; NMOS: NMOS output.
Absolute Maximum Ratings
Supply Voltage…...VSS-0.3V to VSS+6.0V Input Voltage…..VSS-0.3V to VDD+0.3V Storage Temperature..-50°C to 125°C Operating Temperature...-40°C to 85°C IOL Total..80mA IOH Total..-80mA Total Power Dissipation. 500mW Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings” may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Rev. 1.00 6 October 08, 2020 Rev. 1.00 7 October 08, 2020 Document Outline Features CPU Features Peripheral Features General Description Block Diagram Pin Assignment Pin Description Absolute Maximum Ratings D.C. Characteristics Operating Voltage Characteristics Operating Current Characteristics Standby Current Characteristics A.C. Characteristics Internal Oscillator Characteristics System Start Up Time Characteristics Input/Output Characteristics REM/REMDRV Pin Characteristics LVR Electrical Characteristics Power on Reset Characteristics System Architecture Clocking and Pipelining Program Counter Stack Arithmetic and Logic Unit – ALU Flash Program Memory Structure Special Vectors Look-up Table Table Program Example In Circuit Programming – ICP On-Chip Debug Support – OCDS Data Memory Structure General Purpose Data Memory Special Purpose Data Memory Special Function Register Description Indirect Addressing Registers – IAR0 Memory Pointers – MP0 Accumulator – ACC Program Counter Low Register – PCL Look-up Table Registers – TBLP, TBLH Status Register – STATUS Oscillators Oscillator Overview System Clock Configurations Internal RC Oscillator – HIRC Internal 32kHz Oscillator – LIRC Operating Modes and System Clocks System Clocks System Operation Modes Control Register Operating Mode Switching Standby Current Considerations Wake-up Watchdog Timer Watchdog Timer Clock Source Watchdog Timer Control Register Watchdog Timer Operation Reset and Initialisation Reset Functions Reset Initial Conditions Input/Output Ports Pull-high Resistors I/O Pin Wake-up I/O Port Control Registers I/O Pin Structures Programming Considerations 9-bit Timer with Carrier Output Timer and Carrier Output Conctrol Register Timer Operation Carrier Output Carrier Output Pins Interrupts Interrupt Register Interrupt Operation Time Base Interrupt Interrupt Wake-up Function Programming Considerations Application Circuits Instruction Set Introduction Instruction Timing Moving and Transferring Data Arithmetic Operations Logical and Rotate Operation Branches and Control Transfer Bit Operations Table Read Operations Other Operations Instruction Set Summary Table Conventions Instruction Definition Package Information 8-pin SOP (150mil) Outline Dimensions 16-pin NSOP (150mil) Outline Dimensions 20-pin NSOP (150mil) Outline Dimensions 20-pin SSOP (150mil) Outline Dimensions