HT46R016 데이터 시트보기 (PDF) - Holtek Semiconductor

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HT46R016

Enhanced A/D Type 8-Bit OTP MCU

Holtek Semiconductor 

HT46R016/HT46R017

Enhanced A/D Type 8-Bit OTP MCU

Data Memory

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

temporary information is stored.

Structure

Divided into two sections, 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.

Device

HT46R016

HT46R017

Capacity

64×8

96×8

The two sections of Data Memory, the Special Purpose and General Purpose Data Memory are

located at consecutive locations. All are implemented in RAM and are 8 bits wide but the length of

each memory section is dictated by the type of microcontroller chosen. The start address of the Data

Memory for all devices is the address "00H".

All microcontroller programs require an area of read/write memory where temporary data can be

stored and retrieved for use later. It is this area of RAM memory that is known as General Purpose

Data Memory. This area of Data Memory is fully accessible by the user program for both read and

write operations. By using the"SET [m].i" and "CLR [m].i" instructions individual bits can be set

or reset under program control giving the user a large range of flexibility for bit manipulation in the

Data Memory.

HT46R016

00H IAR0

01H MP0

HT46R017

IAR0

MP0

Special

Purpose

Registers

3FH

40H

7FH 64 bytes

96 bytes

General

Purpose

Registers

9FH

Data Memory Structure

Note: Most of the Data Memory bits can be directly manipulated using the "SET [m].i" and

"CLR [m].i" with the exception of a few dedicated bits. The Data Memory can also be

accessed through the memory pointer registers.

Rev. 1.00

18

July 16, 2012

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