ST6225C STMicroelectronics, ST6225C Datasheet - Page 9

• Manufacturer Part Number: ST6225C
• Description: 8 Bit ST6 Microcontroller with 16x8-bitADC 1x8-bit TIMER
• Manufacturer: STMicroelectronics

Specifications of ST6225C

• Clock Sources: crystal/ceramic resonator or RC network, external clock, backup oscillator (LFAO)
• 2 Power Saving Modes: Wait and Stop

3 MEMORY MAPS, PROGRAMMING MODES AND OPTION BYTES
3.1 MEMORY AND REGISTER MAPS
3.1.1 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
0FF0h
0FFFh
000h
PROGRAM SPACE
RESET VECTORS
(see
on page
INTERRUPT &
PROGRAM
MEMORY
Figure 4
10)
Briefly, Program space contains user program
code in OTP and user vectors; Data space con-
tains user data in RAM and in OTP, and Stack
space accommodates six levels of stack for sub-
routine and interrupt service routine nesting.
0FFh
03Fh
07Fh
0C0h
000h
040h
080h
081h
082h
083h
084h
0BFh
MEMORY WINDOW
DATA READ-ONLY
ACCUMULATOR
DATA SPACE
W REGISTER
(see
X REGISTER
Y REGISTER
V REGISTER
HARDWARE
REGISTERS
RESERVED
CONTROL
RAM
Table
ST6215C ST6225C
2)
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