ST6246 STMICROELECTRONICS [STMicroelectronics], ST6246 Datasheet - Page 8

• Manufacturer Part Number: ST6246
• Description: 8-BIT OTP/EPROM MCU WITH LCD DRIVER, EEPROM AND A/D CONVERTER
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST62T46B/E46B
1.3 MEMORY MAP
1.3.1 Introduction
The MCU operates in three separate memory
spaces: Program space, Data space, and Stack
space. Operation in these three memory spaces is
described in the following paragraphs.
Figure 3. Memory Addressing Diagram
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0FF0h
0FFFh
0000h
RESET VECTORS
INTERRUPT &
PROGRAM
MEMORY
PROGRAM SPACE
0-63
Briefly, Program space contains user program
code in Program memory and user vectors; Data
space contains user data in RAM and in Program
memory, and Stack space accommodates six lev-
els of stack for subroutine and interrupt service
routine nesting.
0C0h
0FFh
03Fh
07Fh
000h
040h
080h
081h
082h
083h
084h
MEMORY
DATA READ-ONLY
DATA READ-ONLY
WINDOW SELECT
W REGISTER
ACCUMULATOR
X REGISTER
Y REGISTER
V REGISTER
BANK SELECT
RAM / EEPROM
BANKING AREA
DATA RAM
MEMORY
RAM
WINDOW
DATA SPACE
VR01568