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AT89C5122D-RDRUM Datasheet(PDF) 27 Page - ATMEL Corporation

No. de pieza AT89C5122D-RDRUM
Descripción Electrónicos  C51 Microcontroller with USB and Smart Card Reader Interfaces
PDF  208 Pages
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Fabricante Electrónico  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5122D-RDRUM Datasheet(HTML) 27 Page - ATMEL Corporation

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AT83R5122, AT8xC5122/23
4202F–SCR–07/2008
Figure 12.
AT8xC5122’s CRAM and E2PROM Versions
Reset@ <0000>
EA = 0
PROGRAM
EXTERNAL
PROGRAM
PSEN
Reset@
0000
7FFF
8000
FFFF
32K
ROM
32K
CRAM
<F800>
EA = 1
INTERNAL
INTERNAL
32K
PROGRAM
EXTERNAL
ENBOOT=1
ENBOOT=0
8000
FFFF
MEMORY
On-chip
512 bytes
XRAM
0000
01FF
FFFF
RD
WR
DATA MEMORY
(Read / Write)
0000
EXTRAM=0
EXTRAM=1
EXTERNAL
EXTERNAL
XRAM
XRAM
01FF
0200
PSEN
Roll-Over
Roll-Over
MEMORY
MEMORY
32K
INTERNAL
E2PROM
(Read/Write)
(Read Only)
(Read/Write)
SFR
Space
80
FF
00
7F
80
FF
Upper
128 Bytes
RAM
Lower
128 Bytes
RAM
On-Chip 256 bytes RAM
Direct
Addressing
Indirect
Addressing
512 Bytes
INTERNAL
E2PROM
01FF
0000
Optional
FFFF
8000
(applicable only to CRAM version)
(E2PROM version)



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