ST6253B 查看數據表（PDF） - STMicroelectronics

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ST6253B

8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, EEPROM AND SPI

STMicroelectronics 

ST62T53B/T60B/T63B ST62E60B

MEMORY MAP (Cont’d)

1.3.3 Data Space

Data Space accommodates all the data necessary

for processing the user program. This space com-

prises the RAM resource, the processor core and

peripheral registers, as well as read-only data

such as constants and look-up tables in OTP/

EPROM.

1.3.3.1 Data ROM

All read-only data is physically stored in program

memory, which also accommodates the Program

Space. The program memory consequently con-

tains the program code to be executed, as well as

the constants and look-up tables required by the

application.

The Data Space locations in which the different

constants and look-up tables are addressed by the

processor core may be thought of as a 64-byte

window through which it is possible to access the

read-only data stored in OTP/EPROM.

1.3.3.2 Data RAM/EEPROM

In ST62T53B, T60B, T63B and ST62E60B devic-

es, the data space includes 60 bytes of RAM, the

accumulator (A), the indirect registers (X), (Y), the

short direct registers (V), (W), the I/O port regis-

ters, the peripheral data and control registers, the

interrupt option register and the Data ROM Win-

dow register (DRW register).

Additional RAM and EEPROM pages can also be

addressed using banks of 64 bytes located be-

tween addresses 00h and 3Fh.

1.3.4 Stack Space

Stack space consists of six 12-bit registers which

are used to stack subroutine and interrupt return

addresses, as well as the current program counter

contents.

Table 1. Additional RAM/EEPROM Banks

Device

RAM

EEPROM

ST62T53B

1 x 64 bytes

-

ST62T60B/E60B

1 x 64 bytes 2 x 64 bytes

ST62T63B

1 x 64 bytes 1 x 64 bytes

Table 2. ST62T53B, T60B, T63B and ST62E60B

Data Memory Space

RAM and EEPROM

DATA ROM WINDOW AREA

X REGISTER

Y REGISTER

V REGISTER

W REGISTE R

DATA RAM 60 BYTES

PORT A DATA REGISTER

PORT B DATA REGISTER

PORT C DATA REGISTE R

RESERVED

PORT A DIRECTION REGISTER

PORT B DIRECTION REGISTER

PORT C DIRECTION REGISTER

RESERVED

INTERRUPT OPTION REGISTER

DATA ROM WINDOW REGISTER

RESERVED

PORT A OPTION REGISTER

PORT B OPTION REGISTER

PORT C OPTION REGISTER

RESERVED

A/D DATA REGISTE R

A/D CONTROL REGISTER

TIMER PRESCA LER REGISTER

TIMER COUNTE R REGISTER

TIMER STATUS CONTROL REGISTER

AR TIMER MODE CONTROL REGISTER

AR TIMER STATUS/ CONTROL REGISTER1

AR TIMER STATUS/ CONTROL REGISTER2

WATCHDO G REGISTER

AR TIMER RELOAD/CAPTU RE REGISTER

AR TIMER COMPARE REGISTER

AR TIMER LOAD REGISTER

OSCILLATOR CONTROL REGISTE R

MISCELLANEOUS

RESERVED

SPI DATA REGISTER

SPI DIVIDER REGISTER

SPI MODE REGISTER

RESERVED

DATA RAM/EEPRO M REGISTER

RESERVED

EEPROM CONTROL REGISTER

(except ST62T53B)

RESERVED

ACC UMULATOR

* WRITE ONLY REGISTER

000h

03Fh

040h

07Fh

080h

081h

082h

083h

084h

0BFh

0C0h

0C1h

0C2h

0C3h

0C4h

0C5h

0C6h

0C7h

0C8h*

0C9h*

0CAh

0CBh

0CCh

0CDh

0CEh

0CFh

0D0h

0D1h

0D2h

0D3h

0D4h

0D5h

0D6h

0D7h

0D8h

0D9h

0DAh

0DBh

0DCh*

0DDh

0DEh

0DFh

0E0h

0E1h

0E2h

0E3h

0E7h

0E8h*

0E9h

0EAh

0EBh

0FEh

0FFh

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