AT89C51CC02 Atmel Corporation, AT89C51CC02 Datasheet - Page 18

• Manufacturer Part Number: AT89C51CC02
• Manufacturer: Atmel Corporation

Specifications of AT89C51CC02

• Flash (kbytes): 16 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 20
• Uart: 1
• Can: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 0.5
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART/CAN
• Watchdog: Yes

Erase the Flash
Requests from Host
Answers from
Bootloader
18
T89C51CC02 UART Bootloader
Erase block1 (8k to 16k)
Erase block0 (0k to 8k)
Command Name
Full chip erase
The flow described below allows the user to erase the Flash memory.
Two modes of Flash erasing are possible:
•
•
The Full Chip erase command erases the whole Flash (16K bytes) and sets some Configuration
Bytes at their default values:
•
•
•
The full chip erase is always executed whatever the Software Security Byte value is.
Note:
The Block erase command erases only a part of the Flash.
Three Blocks are defined in the T89C51CC02:
•
•
As the Program Configuration Information flows, the erase block command has three possible
answers:
•
•
•
Full Chip erase
Block erase
BSB = FFh
SBV = FCh
SSB = FFh (NO_SECURITY)
block0 (From 0000h to 1FFFh)
block1 (From 2000h to 3FFFh)
‘.’ & ‘CR’ & ’LF’ when the data are programmed
‘X’ & ‘CR’ & ‘LF’ if the checksum is wrong
‘P’ & ‘CR’ & ‘LF’ if the Security is set
Take care that the full chip erase execution takes few seconds (128 pages)
Record Type
03h
Load Offset
x
Record
Length
02h
01h
Data[0]
01h
07h
4223C–CAN–03/08
Data[1]
00h
20h
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