AT89C51CC03 Atmel Corporation, AT89C51CC03 Datasheet - Page 18

• Manufacturer Part Number: AT89C51CC03
• Manufacturer: Atmel Corporation

Specifications of AT89C51CC03

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 37
• Spi: 1
• Uart: 1
• Can: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART/CAN
• Watchdog: Yes

Requests From Host
Answers From
Bootloader
Flow Description
18
AT89C51CC03 CAN Bootloader
COMMAND FINISHED
Wait COMMAND_OK
Send Write_Command
Host
OR
Wait ERROR_SECURITY
COMMAND ABORTED
The device has two possible answers:
•
•
If the chip is protected from program access a “Error” CAN message is sent (see
Section “Error Message Description”).
Otherwise an acknowledge “Command ok“ is sent.
ID_WRITE_COMMAND
ID_WRITE_COMMAND
Identifier
Identifier
Id_write_com message
Id_error message
Id_write_com message
Length
3
3
Length
data[0]
1
01h
02h
Send ERROR_SECURITY
data[1]
1Ch
1Dh
1Eh
1Fh
00h
01h
05h
06h
20h
00h
data[0]
00h
Bootloader
COMMAND FINISHED
data[2]
Send COMMAND_OK
Wait Write_Command
value
value
NO_SECURITY
Write Data
write value in Fuse bits
Description
Command ok
write value in BTC_1
write value in BTC_2
write value in BTC_3
write value in CRIS
write value in BSB
write value in SBV
write value in SSB
write value in NNB
write value in EB
Description
4251B–CAN–03/08