at89c51re2-slsem ATMEL Corporation, at89c51re2-slsem Datasheet - Page 21
at89c51re2-slsem
Manufacturer Part Number
at89c51re2-slsem
Description
At89c51re2 8-bit Flash Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51RE2-SLSEM.pdf
(167 pages)
- Current page: 21 of 167
- Download datasheet (2Mb)
Memory Architecture
Physical memory
organisation
Figure 5. Physical memory organisation
7663B–8051–03/07
Fuse Configuration Byte(1 byte)
Hardware Security (1 byte)
Column Latches (128 bytes)
1FFFFh
00000h
FCB
HSB
Flash memory
128K bytes
AT89C51RE2 features several on-chip memories:
•
•
•
user space
FM0
Flash memory :
containing 128 Kbytes of program memory (user space) organized into 128 bytes
pages.
Boot ROM:
4K bytes for boot loader.
8K bytes internal XRAM
256 bytes
4K bytes
8K bytes
XRAM
ROM
IRAM
RM0
21
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