AT89C51CC03U-RDRIM Atmel, AT89C51CC03U-RDRIM Datasheet - Page 11

• Manufacturer Part Number: AT89C51CC03U-RDRIM
• Description: IC 8051 MCU FLASH 64K 64VQFP
• Manufacturer: Atmel
• Series: AT89C CANr

Specifications of AT89C51CC03U-RDRIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: CAN, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AT89C51CC03URDRTR

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