參數(shù)資料
型號: ST72P621J4B1
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
封裝: PLASTIC, SDIP-32
文件頁數(shù): 13/136頁
文件大?。?/td> 2475K
代理商: ST72P621J4B1
ST7262
11/136
3 REGISTER & MEMORY MAP
As shown in the Figure 7, the MCU is capable of
addressing 64K bytes of memories and I/O regis-
ters.
The available memory locations consist of 64
bytes of register locations, 768 bytes of RAM and
up to 16 Kbytes of user program memory. The
RAM space includes up to 128 bytes for the stack
from 0100h to 017Fh.
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 7. Memory Map
0000h
Program Memory
Interrupt & Reset Vectors
HW Registers
BFFFh
0040h
003Fh
C000h
FFDFh
FFE0h
FFFFh
(see Table 6)
0340h
Reserved
033Fh
Short Addressing
RAM (zero page)
or Stack
017Fh
0040h
00FFh
768 Bytes RAM
E000h
8 KBytes
(128 Bytes)
16 KBytes
384 Bytes RAM
64 Bytes
01BFh
16-bit Addressing
RAM
Short Addressing
RAM (zero page)
017Fh
0040h
00FFh
448 Bytes
033Fh
16-bit Addressing
RAM
16-bit Addressing
RAM
or Stack
(128 Bytes)
16-bit Addressing
RAM
192 Bytes
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