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ST72E121 Datasheet(PDF) 9 Page - STMicroelectronics

No. de pieza ST72E121
Descripción Electrónicos  8-BIT MCU WITH 8 TO 16K OTP/EPROM, 384 TO 512 BYTES RAM, WDG, SCI, SPI AND 2 TIMERS
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72E121 Datasheet(HTML) 9 Page - STMicroelectronics

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ST72E121 ST72T121
Table 3. Hardware Register Memory Map
Address
Block
Register
Label
Register Name
Reset
Status
Remarks
0000h
0001h
0002h
Port A
PADR
PADDR
PAOR
Data Register
Data Direction Register
Option Register
00h
00h
00h
R/W
R/W
R/W 1)
0003h
Reserved Area (1 byte)
0004h
0005h
0006h
Port C
PCDR
PCDDR
PCOR
Data Register
Data Direction Register
Option Register
00h
00h
00h
R/W
R/W
R/W
0007h
Reserved Area (1 byte)
0008h
0009h
000Ah
Port B
PBDR
PBDDR
PBOR
Data Register
Data Direction Register
Option Register
00h
00h
00h
R/W
R/W
R/W 1)
000Bh
Reserved Area (1 byte)
000Ch
000Dh
000Eh
Port E
PEDR
PEDDR
PEOR
Data Register
Data Direction Register
Option Register
00h
00h
0Ch
R/W
R/W
R/W 1)
000Fh
Reserved Area (1 byte)
0010h
0011h
0012h
Port D
PDDR
PDDDR
PDOR
Data Register
Data Direction Register
Option Register
00h
00h
00h
R/W
R/W
R/W 1)
0013h
Reserved Area (1 byte)
0014h
0015h
0016h
Port F
PFDR
PFDDR
PFOR
Data Register
Data Direction Register
Option Register
00h
00h
28h
R/W
R/W
R/W 1)
0017h to
001Fh
Reserved Area (9 bytes)
0020h
MISCR
Miscellaneous Register
00h
0021h
0022h
0023h
SPI
SPIDR
SPICR
SPISR
SPI Data I/O Register
SPI Control Register
SPI Status Register
xxh
xxh
00h
R/W
R/W
Read Only
0024h to
0029h
Reserved Area (6 bytes)
002Ah
002Bh
WDG
WDGCR
WDGSR
Watchdog Control Register
Watchdog Status Register
7Fh
00h
R/W
R/W3)
002Ch to
0030h
Reserved Area (5 bytes)
9


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