AT89C51CC02 Atmel Corporation, AT89C51CC02 Datasheet - Page 90
AT89C51CC02
Manufacturer Part Number
AT89C51CC02
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT89C51CC02.pdf
(7 pages)
2.AT89C51CC02.pdf
(159 pages)
3.AT89C51CC02.pdf
(33 pages)
4.AT89C51CC02.pdf
(29 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51CC02CA-SISUM
Manufacturer:
Atmel
Quantity:
972
Part Number:
AT89C51CC02CA-SISUM
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT89C51CC02CA-TISUM
Manufacturer:
Atmel
Quantity:
1 492
Company:
Part Number:
AT89C51CC02CA-UM
Manufacturer:
AD
Quantity:
10
Company:
Part Number:
AT89C51CC02UA-RATUM
Manufacturer:
Atmel
Quantity:
1 845
Company:
Part Number:
AT89C51CC02UA-UM
Manufacturer:
NEDI
Quantity:
4
CAN Autobaud and
Listening Mode
Routine Examples
90
AT/T89C51CC02
To activate the Autobaud feature, the AUTOBAUD bit in the CANGCON register must
be set. In this mode, the CAN controller is only listening to the line without acknowledg-
ing the received messages. It cannot send any message. The error flags are updated.
The bit timing can be adjusted until no error occurs (good configuration find).
In this mode, the error counters are frozen.
To go back to the standard mode, the AUTOBAUD bit must be cleared.
Figure 45. Autobaud Mode
1. Init of CAN macro
// Reset the CAN macro
// Disable CAN interrupts
// Init the Mailbox
}
}
// Configure the bit timing
CANGCON = 01h;
ECAN
ETIM
for num_page =0; num_page <4; num_page++
CANBT1 = xxh
CANBT2 = xxh
CANBT3 = xxh
{
CANPAGE = num_channel << 4;
CANCONCH = 00h
CANSTCH = 00h;
CANIDT1 = 00h;
CANIDT2 = 00h;
CANIDT3 = 00h;
CANIDT4 = 00h;
CANIDM1 = 00h;
CANIDM2 = 00h;
CANIDM3 = 00h;
CANIDM4 = 00h;
for num_data =0; num_data <8; num_data++)
CANGCON.3
AUTOBAUD
TxDC
RxDC
{
CANMSG = 00h;
= 0;
= 0;
1
0
4126L–CAN–01/08
TxDC
RxDC