Holtek HT66F30 - Flash Program Memory

Rev. 2.50 30 June 22, 2017 Rev. 2.50 31 June 22, 2017
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
Flash Program Memory
TheProgramMemoryisthelocationwheretheusercodeorprogramisstored.Forthisdevice
seriestheProgramMemoryisFlashtype,whichmeansitcanbeprogrammedandre-programmed
alargenumberoftimes,allowingtheusertheconvenienceofcodemodificationonthesame
device.Byusingtheappropriateprogrammingtools,theseFlashdevicesofferuserstheexibilityto
convenientlydebuganddeveloptheirapplicationswhilealsoofferingameansofeldprogramming
andupdating.
Structure
TheProgramMemoryhasacapacityof1K×14bitsto12K×16bits.TheProgramMemoryis
addressedbytheProgramCounterandalsocontainsdata,tableinformationandinterruptentries.
Tabledata,whichcanbesetupinanylocationwithintheProgramMemory,isaddressedbya
separatetablepointerregister.
Device Capacity Banks
HT66F20
1K×14 0
HT66F30
2K×14 0
HT66F40
4K×15 0
HT66F50
8K×16 0
HT66F60
12K×16 0, 1
TheHT66F60hasitsProgramMemorydividedintotwoBanks,Bank0andBank1.Therequired
BankisselectedusingBit5oftheBPRegister.
In te rru pt
Vector
0004H
03FFH
14 bits
002C H
In te rru pt
Vector
14 bits
07FFH
In te rru pt
Vector
15 bits
In te rru pt
Vector
16 bits
In te rru pt
Vector
Reset
0000H

Reset

Reset

Reset

Reset

003C H
B ank 0
16 bits
0FFFH
1FFFH 1FFFH
2000H
2FFFH
B ank 1
Program Memory Structure