AT89C51CC03 Atmel Corporation, AT89C51CC03 Datasheet - Page 12

• 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

Request From Host
Answers From
Bootloader
Flow Description
Example
12
AT89C51CC03 CAN Bootloader
COMMAND ABORTED
Time-out 10 ms
Send Select Node message
with node number in parameter
COMMAND FINISHED
OR
Host
Wait Select Node
Note:
Note:
If the communication is closed then all the others messages won’t be managed by bootloader.
HOST
BOOTLOADER
num_node is the NNB (Node Number Byte) to which the Host wants to talk to.T
data[0] contains the bootloader version.
ID_SELECT_NODE
Identifier
Id_select_node message
Id_select_node message
Id_select_node
Id_select_node
ID_SELECT_NODE
identifier
Identifier
Length
2
length
01
02
boot_version
data[0]
State com = com open
FF
01 01
local node number
data
node select =
Length
data[1]
Bootloader
00h
01h
1
Read Bootloader Version
State com = com closed
Send Bootloader Version
and state of communication
COMMAND FINISHED
state com = com open
Wait Select Node
node select = FFh
Communication close
Communication open
Comment
num_node
data[0]
4251B–CAN–03/08