AT89C51CC03 Atmel Corporation, AT89C51CC03 Datasheet - Page 20

• 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

Answers From
Bootloader
Flow Description
Example
20
AT89C51CC03 CAN Bootloader
COMMAND FINISHED
Wait Value of data
Send read_com message
OR
Wait ERROR_SECURITY
COMMAND ABORTED
Host
The device has two possible answers:
•
•
If the chip is protected from read access an “Error” CAN message is sent (see Section “Error
Message Description”).
Otherwise:
the device answers with a Read Answer CAN message (Id_read_command).
Read Fuse bit
BOOTLOADER
Read Bootloader Version
BOOTLOADER
Read SBV
BOOTLOADER
HOST
HOST
HOST
ID_READ_COMMAND
Id_read_com message
Id_read_com message
Id_error message
Identifier
Id_read_command
Id_read_command
Id_read_command
Id_read_command
Id_read_command
Id_read_command
identifier
identifier
identifier
control
control
control
01
01
02
01
02
01
Send ERROR_SECURITY
55
02
F0
00
01
F5
data
Length
data
data
1
00
01
// Bootloader version 55h
// Fuse bit = F0h
// SBV = F5h
Bootloader
COMMAND FINISHED
RD_WR_SECURITY
Wait Read_Com
Send Data read
Read Data
data[n]
value
4251B–CAN–03/08