HT45F3820 datasheet(2/121 Pages) HOLTEK

2 / 121 page

Rev. 1.11

April 11, 2017

Rev. 1.11

April 11, 2017

HT45F3820

Ultrasonic Atomizer Flash MCU

HT45F3820

Ultrasonic Atomizer Flash MCU

Table of Contents

Features............................................................................................................ 6

CPU Features ......................................................................................................................... 6

Peripheral Features................................................................................................................. 6

General Description ........................................................................................ 7

Block Diagram.................................................................................................. 8

Pin Assignment................................................................................................ 8

Pin Descriptions .............................................................................................. 9

Absolute Maximum Ratings.......................................................................... 10

D.C. Characteristics....................................................................................... 10

A.C. Characteristics....................................................................................... 12

LVD & LVR Electrical Characteristics .......................................................... 13

Over Current / Voltage Protection Electrical Characteristics .................... 14

Power on Reset Electrical Characteristics.................................................. 15

System Architecture...................................................................................... 15

Clocking and Pipelining......................................................................................................... 15

Program Counter................................................................................................................... 16

Stack ..................................................................................................................................... 17

Arithmetic and Logic Unit – ALU ........................................................................................... 17

Flash Program Memory................................................................................. 18

Structure................................................................................................................................ 18

Special Vectors ..................................................................................................................... 18

Look-up Table........................................................................................................................ 18

Table Program Example........................................................................................................ 19

In Circuit Programming ......................................................................................................... 20

On-Chip Debug Support – OCDS ......................................................................................... 20

RAM Data Memory......................................................................................... 21

Structure................................................................................................................................ 21

General Purpose Data Memory ............................................................................................ 21

Special Purpose Data Memory ............................................................................................. 22

Special Function Register Description........................................................ 23

Indirect Addressing Reg

isters – IAR0, IAR1 ......................................................................... 23

Memory Pointers – MP0, MP1 .............................................................................................. 23

Bank Pointer – BP................................................................................................................. 24

Accumulator – ACC............................................................................................................... 24

Program Counter Low Register – PCL.................................................................................. 24

Look-up Table Registers – TBLP, TBHP, TBLH..................................................................... 25

Status Register – STATUS.................................................................................................... 25

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