st72324bk STMicroelectronics, st72324bk Datasheet - Page 18

• Manufacturer Part Number: st72324bk
• Description: 3 V/5 V Range 8-bit Mcu With 4/8 Kbyte Rom, 10-bit Adc, Four Timers And Spi
• Manufacturer: STMicroelectronics

Register and memory map
3
Table 2.
18/167
Address
000Ch
000Dh
000Ah
000Bh
000Eh
0000h
0001h
0002h
0003h
0004h
0005h
0006h
0007h
0008h
0009h
Port B
Port D
Port E
Port A
Register and memory map
As shown in
registers.
The available memory locations consist of 128 bytes of register locations, 386 bytes of RAM
and 8Kbytes 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 “Reserved” must never be accessed. Accessing
a reseved area can have unpredictable effects on the device.
Figure 7.
Hardware register map
Port C
Block
(3)
(3)
(3)
(3)
Register label
PADR
PADDR
PAOR
PBDR
PBDDR
PBOR
PCDR
PCDDR
PCOR
PDADR
PDDDR
PDOR
PEDR
PEDDR
PEOR
FFFFh
FFDFh
FFE0h
0FFFh
0080h
0000h
007Fh
01FFh
0200h
1000h
Figure
Memory map
Interrupt & Reset vectors
7, the MCU is capable of addressing 64K bytes of memories and I/O
(see
Program memory
HW Registers
(see
(1)
(384 Bytes)
Port A Data Register
Port A Data Direction Register
Port A Option Register
Port B Data Register
Port B Data Direction Register
Port B Option Register
Port C Data Register
Port C Data Direction Register
Port C Option Register
Port D Data Register
Port D Data Direction Register
Port D Option Register
Port E Data Register
Port E Data Direction Register
Port E Option Register
Reserved
Table
RAM
(8K)
Table
9)
2)
Register name
00FFh
01FFh
0080h
0100h
RAM (zero page)
Short addressing
256 bytes stack
Reset status
00h
00h
00h
00h
00h
ST72323 ST72323L
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
(2)
(2)
(2)
(2)
(2)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Remarks
(3)
(3)