HT56RB27 datasheet(26/153 Pages) HOLTEK

26 / 153 page

rombank 5 code5

ds .section

¢data¢

Tempreg1 db ?

;temporaryregister#1

tempreg2 db ?

;temporaryregister#2

code0 .section

¢code¢

mov a,06h

;initialise table pointer - note that this address

;is referenced

mov tblp,a

;to the last page or the page that tbhp pointed

mov a,0bfh

;initialise high table pointer

mov tbhp,a

;it is not necessary to set tbhp if executing tabrdl

tabrdc tempreg1

tabrdl tempreg1

;transfers value in table referenced by table pointer

;to tempregl

;data at prog.memory address BF06H transferred to

;tempreg1 and TBLH

dec tblp

;reduce value of table pointer by one

tabrdc tempreg2

tabrdl tempreg2

;transfers value in table referenced by table pointer

;to tempreg2

;data at prog.memory address BF05H transferred

;tempreg2 and TBLH

;in this example the data 1AH is transferred to

;tempreg1 and data 0FH to tempreg2

;the value 00H will be transferred to the high byte

;register TBLH

code5 .section

¢code¢

org 1F00h

;sets initial address of lastpage

dc 00Ah,00Bh,00Ch,00Dh,00Eh,00Fh,01Ah,01Bh

Data Memory

The Data Memory is a volatile area of 8-bit wide RAM internal memory and is the location where

temporary information is stored. Divided into two parts, the first of these is an area of RAM where

special function registers are located. These registers have fixed locations and are necessary for correct

operation of the device. Many of these registers can be read from and written to directly under program

control, however, some remain protected from user manipulation. The second area of Data Memory is

reserved for general purpose use. All locations within this area are read and write accessible under

program control. The general purpose data memory is divided into several banks and switching

between the different Data Memory banks is achieved by setting the Bank Pointer to the correct value.

Rev. 1.20

April 26, 2013

HT56RB27

TinyPowerTM A/D Type Smart Card OTP MCU

with DAC, ISO 7816 and USB Interfaces

0 0 H

7 F H

8 0 H

F F H

S p e c i a l P u r p o s e

D a t a M e m o r y

G e n e r a l P u r p o s e

D a t a M e m o r y

B a n k 0

B a n k 4

B a n k 3

B a n k 3 1

Data Memory Structure

HT56RB27 数据表(PDF) 26 Page - Holtek Semiconductor Inc

HT56RB27 数据表(HTML) 26 Page - Holtek Semiconductor Inc

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