Register And Memory Map; Table 4. Hardware Register Map; Figure 5. Memory Map - STMicroelectronics ST72361 Auto Series Manual

ST72361xx-Auto
2

Register and memory map

As shown in
registers.
The available memory locations consist of 128 bytes of register locations, up to 2 Kbytes of
RAM and up to 60 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.
Caution: Memory locations marked as "Reserved" must never be accessed. Accessing a reserved
area can have unpredictable effects on the device.
Figure 5.
0000h
007Fh
0080h
087Fh
0880h
0FFFh
1000h
FFDFh
FFE0h
FFFFh
Table 4. Hardware register map
Address Block
0000h
0001h Port A
0002h
0003h
0004h Port B
0005h
0006h
0007h Port C
0008h
0009h
000Ah Port D
000Bh
000Ch
000Dh Port E
000Eh
Figure 5, the MCU is capable of addressing 64 Kbytes of memories and I/O
Memory map
HW Registers
)
(see Table 4
RAM
(2048/1536 bytes)
Reserved
Program Memory
(60K, 48K, 32K, 16K)
Interrupt & Reset Vectors
)
(see Table 16
Register
label
PADR Port A Data Register
PADDR Port A Data Direction Register
PAOR Port A Option Register
PBDR Port B Data Register
PBDDR Port B Data Direction Register
PBOR Port B Option Register
PCDR Port C Data Register
PCDDR Port C Data Direction Register
PCOR Port C Option Register
PDDR Port D Data Register
PDDDR Port D Data Direction Register
PDOR Port D Option Register
PEDR Port E Data Register
PEDDR Port E Data Direction Register
PEOR Port E Option Register
Doc ID 12468 Rev 3
0080h
Short Addressing
RAM (zero page)
00FFh
0100h
256 bytes Stack
01FFh
0200h
16-bit Addressing
RAM
067Fh
or 087Fh
Register name
Register and memory map
1000h
60 Kbytes
4000h
48 Kbytes
8000h
32 Kbytes
C000h
16 Kbytes
FFDFh
Reset
Remarks
status
(2) (3)
00h R/W
(3)
00h R/W
(3)
00h R/W
(2) (3)
00h R/W
(3)
00h R/W
(3)
00h R/W
(2) (3)
00h R/W
(3)
00h R/W
(3)
00h R/W
(2) (3)
00h R/W
(3)
00h R/W
(3)
00h R/W
(2) (3)
00h R/W
(3)
00h R/W
(3)
00h R/W
(1)
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