AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 21
AT89C51RE2
Manufacturer Part Number
AT89C51RE2
Description
Manufacturer
Atmel Corporation
Specifications of AT89C51RE2
Flash (kbytes)
128 Kbytes
Max. Operating Frequency
60 MHz
Cpu
8051-12C
Max I/o Pins
34
Spi
1
Uart
2
Sram (kbytes)
8.25
Self Program Memory
API
Operating Voltage (vcc)
2.7 to 5.5
Timers
4
Isp
UART/OCD
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51RE2-RLTEM
Manufacturer:
BPS
Quantity:
30 000
Company:
Part Number:
AT89C51RE2-RLTUM
Manufacturer:
MSC
Quantity:
1 560
Company:
Part Number:
AT89C51RE2-SLRUM
Manufacturer:
Atmel
Quantity:
759
Company:
Part Number:
AT89C51RE2-SLSUM
Manufacturer:
HONEYWELL
Quantity:
101
Company:
Part Number:
AT89C51RE2-UM
Manufacturer:
XILINX
Quantity:
101
Memory Architecture
Physical memory
organisation
Figure 5. Physical memory organisation
7663E–8051–10/08
Fuse Configuration Byte(1 byte)
Hardware Security (1 byte)
Column Latches (128 bytes)
1FFFFh
00000h
AT89C51RE2 features several on-chip memories:
•
•
•
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
FCB
HSB
Flash memory
128K bytes
user space
FM0
256 bytes
4K bytes
8K bytes
XRAM
ROM
IRAM
RM0
AT89C51RE2
21