參數(shù)資料
型號: T89C51CC02UA-TISIM
廠商: Atmel
文件頁數(shù): 150/159頁
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 16K 28SOIC
標準包裝: 27
系列: AT89C CAN
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
連通性: CAN,UART/USART
外圍設備: POR,PWM,WDT
輸入/輸出數(shù): 20
程序存儲器容量: 16KB(16K x 8)
程序存儲器類型: 閃存
EEPROM 大小: 2K x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
包裝: 管件
配用: AT89STK-06-ND - KIT DEMOBOARD 8051 MCU W/CAN
其它名稱: T89C51CC02UATISIM
90
AT/T89C51CC02
4126L–CAN–01/08
CAN Autobaud and
Listening Mode
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
Routine Examples
1. Init of CAN macro
// Reset the CAN macro
CANGCON = 01h;
// Disable CAN interrupts
ECAN
= 0;
ETIM
= 0;
// Init the Mailbox
for num_page =0; num_page <4; num_page++
{
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++)
{
CANMSG = 00h;
}
// Configure the bit timing
CANBT1 = xxh
CANBT2 = xxh
CANBT3 = xxh
0
1
TxDC
RxDC
AUTOBAUD
CANGCON.3
RxDC
TxDC
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