HT68F03 datasheet(18/139 Pages) HOLTEK

18 / 139 page

HT66F03/HT66F04/HT68F03/HT68F04

Rev. 1.00

April 16, 2010

Programmer Pin

MCU Pins

RES

PA7

DATA

PA0

CLK

PA2

Programmer and MCU Pins

RAM Data Memory

The Data Memory is a volatile area of 8-bit wide RAM in-

ternal memory and is the location where temporary in-

formation is stored.

Structure

Divided into two sections, the first of these is an area of

RAM, known as the Special Function Data Memory.

Here are located registers which are necessary for cor-

rect operation of the device. Many of these registers can

be read from and written to directly under program con-

trol, however, some remain protected from user manipu-

lation.

Device

Capacity

Bank 0

Bank 1

HT66F03

HT68F03

´8

40H~7FH

40H (EEC)

available only

HT66F04

HT68F04

´8

40H~9FH

40H (EEC)

available only

The second area of Data Memory is known as the Gen-

eral Purpose Data Memory, which is reserved for gen-

eral purpose use. All locations within this area are read

and write accessible under program control.

The overall Data Memory is subdivided into two banks

for all the devices. The Special Purpose Data Memory

registers are accessible in all banks, with the exception

of the EEC register at address 40H, which is only acces-

sible in Bank 1. Switching between the different Data

Memory banks is achieved by setting the Bank Pointer

to the correct value. The start address of the Data Mem-

ory for all devices is the address 00H.

W r i t e r _ V D D

R E S

D A T A

C L K

W r i t e r _ V S S

T o o t h e r C i r c u i t

D A T A

C L K

V S S

R E S

V D D

W r i t e r C o n n e c t o r

S i g n a l s

M C U P r o g r a m m i n g

P i n s

Note:

* may be resistor or capacitor. The resistance

of * must be greater than 1k

W or the capacitance

of * must be less than 1nF.

0 0 H

0 1 H

0 2 H

0 3 H

0 4 H

0 5 H

0 6 H

0 7 H

0 8 H

0 9 H

0 A H

0 B H

0 C H

0 D H

0 E H

0 F H

1 0 H

1 1 H

1 2 H

1 3 H

1 4 H

1 5 H

1 6 H

1 7 H

1 8 H

1 9 H

1 A H

1 B H

1 C H

1 D H

1 E H

1 F H

I A R 0

M P 0

I A R 1

M P 1

B P

A C C

P C L

T B L P

T B L H

T B H P

S T A T U S

S M O D

L V D C

I N T E G

I N T C 0

I N T C 1

I N T C 2

M F I 0

U n u s e d

M F I 2

P A

P A C

P A P U

P A W K U P

P R M

U n u s e d

W D T C

T B C

U n u s e d

E E A

E E D

2 0 H

2 1 H

2 2 H

2 3 H

2 4 H

2 5 H

2 6 H

2 7 H

2 8 H

2 9 H

2 A H

2 B H

2 C H

2 D H

2 E H

2 F H

3 0 H

3 1 H

3 2 H

3 3 H

3 4 H

3 5 H

3 6 H

3 7 H

3 8 H

3 9 H

3 A H

3 B H

3 C H

3 D H

3 E H

3 F H

A D R L

A D R H

A D C R 0

A D C R 1

A C E R L

C P C

U n u s e d

T M 0 C 0

T M 0 C 1

T M 0 D L

T M 0 D H

T M 0 A L

T M 0 A H

T M 1 C 0

T M 1 C 1

T M 1 D L

T M 1 D H

T M 1 A L

T M 1 A H

U n u s e d

B a n k 0 & B a n k 1

HT66F03 Special Purpose Data Memory

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