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ST6262C Datasheet(PDF) 9 Page - STMicroelectronics

No. de Pieza. ST6262C
Descripción  8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER AND EEPROM
Descarga  78 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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ST6262C Datasheet(HTML) 9 Page - STMicroelectronics

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ST62T52C ST62T62C/E62C
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 ST62T52C, T62C and ST62E62C 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
Table 2. ST62T52C, T62C and ST62E62C Data
Memory Space
Device
RAM
EEPROM
ST62T52C
1 x 64 bytes
-
ST62T62C
1 x 64 bytes
1 x 64 bytes
RAM / EEPROM banks
000h
03Fh
DATA ROM WINDOW AREA
040h
07Fh
X REGISTER
080h
Y REGISTER
081h
V REGISTER
082h
W REGISTER
083h
DATA RAM 60 BYTES
084h
0BFh
PORT A DATA REGISTER
0C0h
PORT B DATA REGISTER
0C1h
PORT C DATA REGISTER
0C2h
RESERVED
0C3h
PORT A DIRECTION REGISTER
0C4h
PORT B DIRECTION REGISTER
0C5h
PORT C DIRECTION REGISTER
0C6h
RESERVED
0C7h
INTERRUPT OPTION REGISTER
0C8h*
DATA ROM WINDOW REGISTER
0C9h*
RESERVED
0CAh
0CBh
PORT A OPTION REGISTER
0CCh
PORT B OPTION REGISTER
0CDh
PORT C OPTION REGISTER
0CEh
RESERVED
0CFh
A/D DATA REGISTER
0D0h
A/D CONTROL REGISTER
0D1h
TIMER PRESCALER REGISTER
0D2h
TIMER COUNTER REGISTER
0D3h
TIMER STATUS CONTROL REGISTER
0D4h
AR TIMER MODE CONTROL REGISTER
0D5h
AR TIMER STATUS/CONTROL REGISTER1
0D6h
AR TIMER STATUS/CONTROL REGISTER2
0D7h
WATCHDOG REGISTER
0D8h
AR TIMER RELOAD/CAPTURE REGISTER
0D9h
AR TIMER COMPARE REGISTER
0DAh
AR TIMER LOAD REGISTER
0DBh
RESERVED
0DCh
0DDh
0DEh
0E7h
DATA RAM/EEPROM REGISTER
0E8h*
RESERVED
0E9h
EEPROM CONTROL REGISTER
0EAh
RESERVED
0EBh
0FEh
ACCUMULATOR
0FFh
* WRITE ONLY REGISTER


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