AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 64

• Manufacturer Part Number: AT89C51RE2
• 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

Erasing commands
FLASH
64
AT89C51RE2
The erasing command is supported by the following areas:
Table 39. Memory space & Erase
Nothing is done on the other areas.
The erasing command on the Flash memory:
•
•
FLASH
erases the four physical flash memory banks (from address 0000h to 1FFFFh).
the HSB (Hardware Security Byte) is set at NO_PROTECTION:
–
FLB2.0 = ‘111’
Memory/Information Family
need security level check
Comments/Restriction
7663E–8051–10/08