HT45FH4M
Lithium Battery Backup Power ASSP MCU
Table of Contents
Features............................................................................................................ 6
CPU Featꢀꢁes ......................................................................................................................... 6
Peꢁipheꢁal Featꢀꢁes................................................................................................................. 6
General Description ........................................................................................ 7
Block Diagram.................................................................................................. 7
Pin Assignment................................................................................................ 8
Pin Description ................................................................................................ 9
Inteꢁnal Connection Descꢁiption.............................................................................................. 9
Absolute Maximum Ratings.......................................................................... 10
D.C. Characteristics....................................................................................... 10
A.C. Characteristics........................................................................................11
ADC Electrical Characteristics..................................................................... 12
LDO Regulator Electrical Characteristics ................................................... 12
Level Converter Electrical Characteristics.................................................. 13
Over Voltage/Current circuit Electrical Characteristics............................. 13
Power on Reset Electrical Characteristics.................................................. 14
System Architecture...................................................................................... 14
Clocking and Pipelining......................................................................................................... 14
Pꢁogꢁam Coꢀnteꢁ................................................................................................................... 1ꢃ
Stack ..................................................................................................................................... 16
Aꢁithmetic and Logic Unit – ALU ........................................................................................... 16
Flash Program Memory................................................................................. 17
Stꢁꢀctꢀꢁe................................................................................................................................ 17
Special Vectoꢁs ..................................................................................................................... 17
Look-ꢀp Table........................................................................................................................ 18
Table Pꢁogꢁam Example........................................................................................................ 19
In Ciꢁcꢀit Pꢁogꢁamming ......................................................................................................... ꢅ0
On-Chip Debꢀg Sꢀppoꢁt – OCDS ......................................................................................... ꢅ1
RAM Data Memory......................................................................................... 21
Stꢁꢀctꢀꢁe................................................................................................................................ ꢅ1
Special Function Register Description........................................................ 23
Indiꢁect Addꢁessing Registeꢁs – IAR0ꢄ IAR1 ......................................................................... ꢅꢆ
Memoꢁꢂ Pointeꢁs – MP0ꢄ MP1 .............................................................................................. ꢅꢆ
Bank Pointeꢁ – BP................................................................................................................. ꢅ4
Accꢀmꢀlatoꢁ – ACC............................................................................................................... ꢅ4
Pꢁogꢁam Coꢀnteꢁ Low Registeꢁ – PCL.................................................................................. ꢅ4
Look-ꢀp Table Registeꢁs – TBLPꢄ TBHPꢄ TBLH..................................................................... ꢅ4
Statꢀs Registeꢁ – STATUS.................................................................................................... ꢅꢃ
Rev. 1.10
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�anꢀaꢁꢂ 1ꢃꢄ ꢅ01ꢆ
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
