AT89C51CC03 Atmel Corporation, AT89C51CC03 Datasheet - Page 11
AT89C51CC03
Manufacturer Part Number
AT89C51CC03
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C51CC03.pdf
(7 pages)
2.AT89C51CC03.pdf
(198 pages)
3.AT89C51CC03.pdf
(32 pages)
4.AT89C51CC03.pdf
(27 pages)
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
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Communication
Initialization
Figure 4. First Connection
Figure 5. On Network Connection
4251B–CAN–03/08
Host
Figure 3. Identifier Remapping
The communication with a device (CAN node) must be opened prior to initiate any ISP
communication.
To open communication with the device, the Host sends a “connecting” CAN message
(Id_select_node) with the node number (NNB) passed in parameter.
If the node number passed is equal to FFh then the CAN bootloader accepts the communication
(Figure 4).
Otherwise the node number passed in parameter must be equal to the local Node Number (Fig-
ure 5).
Before opening a new communication with another device, the current device communication
must be closed with its connecting CAN message (Id_select_node).
Host
Interface board between PC
and CAN network
[CRIS]0h
7FFh
000h
CAN Identifiers
Interface board between PC
and CAN network
NNB = 00h
Node 0
AT89C51CC03 CAN Bootloader
NNB = 01h
Node 1
NNB = FFh (default value)
Node 1
NNB = 03h
Node 3
CAN ISP identifiers
ID_read_command
ID_write_command
ID_display_data
ID_prog_data
ID_prog_start
ID_select_node
ID_error
NNB = n
Node n
Group of 7CAN messages
Used to manage CAN ISP
11