AT83C5122_08 ATMEL [ATMEL Corporation], AT83C5122_08 Datasheet - Page 29

• Manufacturer Part Number: AT83C5122_08
• Description: C51 Microcontroller with USB and Smart Card Reader Interfaces
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 13. AT83R5122, AT8xC5122’s ROM Version
4202F–SCR–07/2008
PROGRAM MEMORY
DATA MEMORY
(Read only)
(Read / Write)
0000
7FFF
01FF
0000
EXTRAM=0
INTERNAL
32K ROM
512 bytes
EA=1
On-chip
XRAM
Roll-Over
Roll-Over
RESET@
<0000>
FFFF
0000
FFFF
0200
01FF
8000
EXTRAM=1
EXTERNAL
EXTERNAL
EXTERNAL
EXTERNAL
RD
EA=0
XRAM
XRAM
WR
PSEN
AT83R5122, AT8xC5122/23
Optional
On-Chip 256 bytes RAM
FF
80
7F
01FF
0000
00
Indirect
Addressing
128 Bytes
Upper
INTERNAL
RAM
512 Bytes
E2PROM
128 Bytes
Lower
RAM
FF
80
Direct
Addressing
Space
SFR
29