AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 32
AT89C5122
Manufacturer Part Number
AT89C5122
Description
MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C5122.pdf
(213 pages)
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AT83C5123 Version
Figure 15. AT83C5123’s Device
32
PROGRAM MEMORY
(Read only)
DATA MEMORY
(Read / Write)
AT8xC5122/23
RESET@
<0000>
OPTIONAL
The AT83C5123 device is a low pin count version of the AT8xC5122.
The ROM version implements :
- 30 KB of ROM mapped from 0000 to 77FF in which is embedded the user code. The
ROM device is only factory programmable.
- 512 bytes of E2PROM can be optionally implemented to store permanent data
01FF
01FF
0000
0000
7FFF
INTERNAL
512 Bytes
512 bytes
INTERNAL
E2PROM
30K ROM
On-chip
XRAM
On-Chip 256 bytes RAM
FF
80
7F
00
Indirect
Addressing
128 Bytes
Upper
RAM
128 Bytes
Lower
RAM
FF
80
Direct
Addressing
Space
SFR
4202D–SCR–06/05
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