AT89C51CC02 Atmel Corporation, AT89C51CC02 Datasheet - Page 11

• 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

Communication
Initialization
Figure 6. First Connection
Figure 7. On Network Connection
4208D–CAN–03/08
Host
Figure 5. Identifier Remapping
The communication with a device (CAN node) must be opened prior to initiating any ISP
communication.
To open the 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 6).
Otherwise the node number passed in parameter must be equal to the local Node Number (Fig-
ure 7).
Before opening a new communication with another device, the current device communication
must be closed with its connecting CAN message (ID_SELECT_NODE).
Interface Board Between PC
and CAN Network
Host
[CRIS]0h
7FFh
000h
CAN Identifiers
Interface Board Between PC
and CAN Network
NNB = 00h
Node 0
T89C51CC02 CAN Bootloader
NNB = 01h
Node 1
NNB = FFh (Default Value)
Node 1
NNB = 03h
Node 3
ID_READ_COMMAND
ID_WRITE_COMMAND
ID_DISPLAY_DATA
ID_PROG_DATA
ID_PROG_START
ID_SELECT_NODE
CAN ISP Identifiers
ID_ERROR
NNB = n
Node n
Group of 7 CAN Messages
Used to Manage CAN ISP
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