ST62E62CD View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST62E62CD

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

STMicroelectronics 

ST62T52CM-Auto ST62T62CM-Auto

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 ST6252CM-Auto, ST6262CM-Auto devices, the

data space includes 60 bytes of RAM, the accu-

mulator (A), the indirect registers (X), (Y), the short

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

peripheral data and control registers, the interrupt

option register and the Data ROM Window 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

ST62T52C

ST62T62C

RAM

1 x 64 bytes

1 x 64 bytes

EEPROM

-

1 x 64 bytes

Table 2. ST6252CM-Auto, ST6262CM-Auto Data

Memory Space

RAM / EEPROM banks

DATA ROM WINDOW AREA

X REGISTER

Y REGISTER

V REGISTER

W REGISTER

DATA RAM 60 BYTES

PORT A DATA REGISTER

PORT B DATA REGISTER

PORT C DATA REGISTER

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 REGISTER

A/D CONTROL REGISTER

TIMER PRESCALER REGISTER

TIMER COUNTER REGISTER

TIMER STATUS CONTROL REGISTER

AR TIMER MODE CONTROL REGISTER

AR TIMER STATUS/CONTROL REGISTER1

AR TIMER STATUS/CONTROL REGISTER2

WATCHDOG REGISTER

AR TIMER RELOAD/CAPTURE REGISTER

AR TIMER COMPARE REGISTER

AR TIMER LOAD REGISTER

RESERVED

DATA RAM/EEPROM REGISTER

RESERVED

EEPROM CONTROL REGISTER

RESERVED

ACCUMULATOR

* 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

0E7h

0E8h*

0E9h

0EAh

0EBh

0FEh

0FFh

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