AT89C51CC03C-S3RIM Atmel, AT89C51CC03C-S3RIM Datasheet - Page 91
AT89C51CC03C-S3RIM
Manufacturer Part Number
AT89C51CC03C-S3RIM
Description
IC 8051 MCU FLASH 64K 52PLCC
Manufacturer
Atmel
Series
AT89C CANr
Datasheets
1.AT89C51CC03C-S3RIM.pdf
(198 pages)
2.AT89C51CC03C-S3RIM.pdf
(32 pages)
3.AT89C51CC03C-S3RIM.pdf
(27 pages)
4.AT89C51CC03C-S3RIM.pdf
(184 pages)
Specifications of AT89C51CC03C-S3RIM
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
52-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
AT89C51CC03CS3RTR
Available stocks
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Part Number
Manufacturer
Quantity
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Bit Timing and Baud Rate
Figure 47. Sample And Transmission Point
4182E–CAN–05/04
CLOCK
FCAN
Prescaler BRP
•
•
•
To enable an interrupt on general error:
•
•
To enable an interrupt on Buffer-full condition:
•
•
To enable an interrupt when Timer overruns:
•
When an interrupt occurs, the corresponding message object bit is set in the SIT
register.
To acknowledge an interrupt, the corresponding CANSTCH bits (RXOK, TXOK,...) or
CANGIT bits (OVRTIM, OVRBUF,...), must be cleared by the software application.
When the CAN node is in transmission and detects a Form Error in its frame, a bit Error
will also be raised. Consequently, two consecutive interrupts can occur, both due to the
same error.
When a message object error occurs and is set in CANSTCH register, no general error
are set in CANGIE register.
The baud rate selection is made by Tbit calculation:
Tbit = Tsyns + Tprs + Tphs1 + Tphs2
1. Tsyns = Tscl = (BRP[5..0]+ 1)/Fcan = 1TQ.
2. Tprs = (1 to 8) * Tscl = (PRS[2..0]+ 1) * Tscl
3. Tphs1 = (1 to 8) * Tscl = (PHS1[2..0]+ 1) * Tscl
4. Tphs2 = (1 to 8) * Tscl = (PHS2[2..0]+ 1) * Tscl
5. Tsjw = (1 to 4) * Tscl = (SJW[1..0]+ 1) * Tscl
The total number of Tscl (Time Quanta) in a bit time must be comprised between 8 to
25.
Enable General CAN IT in the interrupt system register,
Enable interrupt by message object, EICHi,
Enable interrupt on error, ENERCH.
Enable General CAN IT in the interrupt system register,
Enable interrupt on error, ENERG.
Enable General CAN IT in the interrupt system register,
Enable interrupt on Buffer full, ENBUF.
Enable Overrun IT in the interrupt system register.
System clock Tscl
Time Quantum
PRS 3-bit length
PHS1 3-bit length
PHS2 3-bit length
SJW 2-bit length
Bit Timing
AT89C51CC03
Sample point
Transmission point
91
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