參數(shù)資料
型號(hào): ST6240B
廠商: 意法半導(dǎo)體
英文描述: Replaced by PT6302 : 5Vout 3A Wide Input Positive Step-Down ISR 3-SIP MODULE -40 to 70
中文描述: 8位檢察官辦公室/存儲(chǔ)器與LCD驅(qū)動(dòng)器,EEPROM和一個(gè)微處理器/ D轉(zhuǎn)換器
文件頁(yè)數(shù): 10/76頁(yè)
文件大?。?/td> 1280K
代理商: ST6240B
10/76
ST62T40B/E40B
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 Program
memory.
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 Program memory.
1.3.3.2 Data RAM/EEPROM
In ST62T40B and ST62E40B devices, 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 registers, the pe-
ripheral data and control registers, the interrupt
option register and the Data ROM Window Regis-
ter (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 4. Additional RAM/EEPROM Banks.
Table 5. ST62T40B/E40B Data Memory Space
Device
RAM
EEPROM
2 x 64 bytes
ST62T40B/E40B
2 x 64 bytes
DATA and EEPROM
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
0F7h
0F8h
0FEh
OFFh
DATA ROM WINDOW AREA
X REGISTER
Y REGISTER
V REGISTER
W REGISTER
DATA RAM
PORT A DATA REGISTER
PORT B DATA REGISTER
SPI INTERRUPT DISABLE REGISTER
PORT C DATA REGISTER
PORT A DIRECTION REGISTER
PORT B DIRECTION REGISTER
PORT C DIRECTION REGISTER
RESERVED
INTERRUPT OPTION REGISTER
DATA ROM WINDOW REGISTER
ROM BANK SELECT REGISTER
RAM/EEPROM BANK SELECT REGISTER
PORT A OPTION REGISTER
RESERVED
PORT B OPTION REGISTER
PORT C OPTION REGISTER
A/D DATA REGISTER
A/D CONTROL REGISTER
TIMER 1 PRESCALER REGISTER
TIMER 1 COUNTER REGISTER
TIMER 1 STATUS/CONTROL REGISTER
TIMER 2 PRESCALER REGISTER
TIMER 2 COUNTER REGISTER
TIMER 2 STATUS/CONTROL REGISTER
WATCHDOG REGISTER
RESERVED
PSS STATUS/CONTROL REGISTER
32kHz OSCILLATOR CONTROL REGISTER
LCD MODE CONTROL REGISTER
SPI DATA REGISTER
RESERVED
EEPROM CONTROL REGISTER
LCD RAM
DATA RAM
ACCUMULATOR
* WRITE ONLY REGISTER
582
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