ST7232A View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST7232A
STMicroelectronics
'ST7232A' PDF : 157 Pages View PDF
ST7232A
3 REGISTER & MEMORY MAP
As shown in Figure 5, 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.
Figure 5. Memory Map
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-
served area can have unpredictable effects on the
device.
0000h
007Fh
0080h
047Fh
0480h
HW Registers
(see Table 2)
RAM
(384 Bytes)
Reserved
E000h
FFDFh
FFE0h
FFFFh
Program Memory
(4K or 8K)
Interrupt & Reset Vectors
(see Table 8)
0080h
00FFh
0100h
01FFh
0200h
027Fh
or 047Fh
Short Addressing
RAM (zero page)
256 Bytes Stack
Reserved
E000h
F000h
FFFFh
8 KBytes
4 Kbytes
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