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ST7SB20J/US データシート(PDF) 11 Page - STMicroelectronics

部品番号 ST7SB20J/US
部品情報  8-BIT MCU WITH 8K FLASH/ROM, ADC, 4 TIMERS, SPI, SCI INTERFACE
PDF  154 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST7SB20J/US データシート(HTML) 11 Page - STMicroelectronics

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ST7232A
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3 REGISTER & MEMORY MAP
As shown in Figure 4, the MCU is capable of ad-
dressing 64K bytes of memories and I/O registers.
The available memory locations consist of 128
bytes of register locations, up to 384 bytes of RAM
and up to 8 Kbytes of user program memory. The
RAM space includes up to 256 bytes for the stack
from 0100h to 01FFh.
The highest address bytes contain the user reset
and interrupt vectors.
IMPORTANT: Memory locations marked as “Re-
served” must never be accessed. Accessing a re-
seved area can have unpredictable effects on the
device.
Figure 4. Memory Map
0000h
RAM
Program Memory
( 8K)
Interrupt & Reset Vectors
HW Registers
0080h
007Fh
(see Table 2)
E000h
FFDFh
FFE0h
FFFFh
(see Table 8)
0480h
Reserved
047Fh
Short Addressing
RAM (zero page)
256 Bytes Stack
Reserved
0100h
01FFh
027Fh
0080h
0200h
00FFh
or 047Fh
(384 Bytes)
1



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