參數(shù)資料
型號: AT89C51CC02CA-RATUM
廠商: Atmel
文件頁數(shù): 145/159頁
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 16K 32-VQFP
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
標(biāo)準(zhǔn)包裝: 1,250
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(shè)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?。?/td> 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: 32-LQFP
包裝: 托盤
配用: AT89OCD-01-ND - USB EMULATOR FOR AT8XC51 MCU
86
AT/T89C51CC02
4126L–CAN–01/08
Fault Confinement
With respect to fault confinement, a unit may be in one of the three following status:
Error active
Error passive
Bus off
An error active unit takes part in bus communication and can send an active error frame
when the CAN macro detects an error.
An error passive unit cannot send an active error frame. It takes part in bus communica-
tion, but when an error is detected, a passive error frame is sent. Also, after a
transmission, an error passive unit will wait before initiating further transmission.
A bus off unit is not allowed to have any influence on the bus.
For fault confinement, two error counters (TEC and REC) are implemented.
See CAN Specification for details on Fault confinement.
Figure 42. Line Error Mode
TEC>255
Error
Active
Error
Passive
Bus
Off
Init.
TEC<127
and
REC<127
TEC>127
or
REC>127
128 Occurrences
of
11 Consecutive
Recessive
bit
TEC: Transmit Error Counter
REC: Receive Error Counter
ERRP = 0
BOFF = 0
ERRP = 1
BOFF = 0
ERRP = 0
BOFF = 1
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相關(guān)代理商/技術(shù)參數(shù)
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