AT89C51CC03U-RDRIM Atmel, AT89C51CC03U-RDRIM Datasheet - Page 87

• 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

CAN Controller Mailbox
and Registers
Organization
Figure 44. CAN Controller Memory Organization
4182E–CAN–05/04
Enable Interrupt message object - 2
Enable Interrupt message object - 1
Status Interrupt message object - 1
Status Interrupt message object - 2
message object Window SFRs
message object Control and DLC
(message object number) (Data offset)
Enable message object - 2
Enable message object - 1
message object Status
Page message object
TimStmp High
CANTimer Low
Message Data
TimStmp Low
General Interrupt
Enable Interrupt
General Control
CANTimer High
Timer Control
General Status
Bit Timing - 1
Bit Timing - 2
Bit Timing - 3
REC counter
ID Mask - 1
ID Mask - 2
ID Mask - 3
ID Mask - 4
TimTTC High
TimTTC Low
TEC counter
ID Tag - 1
ID Tag - 2
ID Tag - 3
ID Tag - 4
SFR’s
The pagination allows management of the 321 registers including 300(15x20) Bytes of
mailbox via 34 SFR’s.
All actions on the message object window SFRs apply to the corresponding message
object registers pointed by the message object number find in the Page message object
register (CANPAGE) as illustrate in Figure 44.
8 Bytes
message object 0 - Control and DLC
Ch.0 - Message Data - byte 0
message object 0 - Status
Ch.0 TimStmp High
Ch.0 TimStmp Low
Ch.0 - ID Mask - 4
Ch.0 - ID Mask- 1
Ch.0 - ID Mask- 2
Ch.0 - ID Mask- 3
Ch.0 - ID Tag - 1
Ch.0 - ID Tag - 2
Ch.0 - ID Tag - 3
Ch.0 - ID Tag - 4
On-chip CAN Controller registers
15 message objects
message object 14 - Control and DLC
Ch.14 - Message Data - byte 0
message object 14 - Status
Ch.14 TimStmp High
Ch.14 TimStmp Low
Ch.14 - ID Mask - 1
Ch.14 - ID Mask - 2
Ch.14 - ID Mask - 3
Ch.14 - ID Mask - 4
Ch.14 - ID Tag - 4
Ch.14 - ID Tag - 1
Ch.14 - ID Tag - 2
Ch.14 - ID Tag - 3
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