参数资料
型号: T89C51CC02CA-TDSIM
厂商: Atmel
文件页数: 131/159页
文件大小: 0K
描述: IC 8051 MCU FLASH 16K 24SOIC
标准包装: 31
系列: AT89C CAN
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: CAN,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 20
程序存储器容量: 16KB(16K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
包装: 管件
配用: AT89STK-06-ND - KIT DEMOBOARD 8051 MCU W/CAN
其它名称: T89C51CC02CATDSIM
73
AT/T89C51CC02
4126L–CAN–01/08
CAN Controller
The CAN Controller provides all the features required to implement the serial communi-
cation protocol CAN as defined by BOSCH GmbH. The CAN specification as referred to
by ISO/11898 (2.0A & 2.0B) for high speed and ISO/11519-2 for low speed. The CAN
Controller is able to handle all types of frames (Data, Remote, Error and Overload) and
achieves a bitrate of 1-Mbit/s at 8 MHz
1 Crystal frequency in X2 Mode.
Note:
1. At BRP = 1 sampling point will be fixed.
CAN Protocol
The CAN protocol is an international standard defined in the ISO 11898 for high speed
and ISO 11519-2 for low speed.
Principles
CAN is based on a broadcast communication mechanism. This broadcast communica-
tion is achieved by using a message oriented transmission protocol. These messages
are identified by using a message identifier. Such a message identifier has to be unique
within the whole network and it defines not only the content but also the priority of the
message.
The priority at which a message is transmitted compared to another less urgent mes-
sage is specified by the identifier of each message. The priorities are laid down during
system design in the form of corresponding binary values and cannot be changed
dynamically. The identifier with the lowest binary number has the highest priority.
Bus access conflicts are resolved by bit-wise arbitration on the identifiers involved by
each node observing the bus level bit for bit. This happens in accordance with the "wired
and" mechanism, by which the dominant state overwrites the recessive state. The com-
petition for bus allocation is lost by all nodes with recessive transmission and dominant
observation. All the "losers" automatically become receivers of the message with the
highest priority and do not re-attempt transmission until the bus is available again.
Message Formats
The CAN protocol supports two message frame formats, the only essential difference
being in the length of the identifier. The CAN standard frame, also known as CAN 2.0 A,
supports a length of 11 bits for the identifier, and the CAN extended frame, also known
as CAN 2.0 B, supports a length of 29 bits for the identifier.
Can Standard Frame
Figure 32. CAN Standard Frames
A message in the CAN standard frame format begins with the "Start Of Frame (SOF)",
this is followed by the "Arbitration field" which consist of the identifier and the "Remote
Transmission Request (RTR)" bit used to distinguish between the data frame and the
data request frame called remote frame. The following "Control field" contains the "IDen-
tifier Extension (IDE)" bit and the "Data Length Code (DLC)" used to indicate the
11-bit identifier
ID10..0
Interframe
Space
4-bit DLC
DLC4..0
CRC
del.
ACK
del.
15-bit CRC
0 - 8 bytes
SOF
RTR IDE
r0
ACK
7 bits
Intermission
3 bits
Bus Idle
(Indefinite)
Arbitration
Field
Data
Field
Data Frame
Control
Field
End of
Frame
CRC
Field
ACK
Field
Interframe
Space
11-bit identifier
ID10..0
Interframe
Space
4-bit DLC
DLC4..0
CRC
del.
ACK
del.
15-bit CRC
SOF
RTR IDE
r0
ACK
7 bits
Intermission
3 bits
Bus Idle
(Indefinite)
Arbitration
Field
Remote Frame
Control
Field
End of
Frame
CRC
Field
ACK
Field
Interframe
Space
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T89C51CC02CA-TISIM 功能描述:IC 8051 MCU FLASH 16K 28SOIC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:AT89C CAN 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR,WDT 输入/输出数:32 程序存储器容量:32KB(32K x 8) 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP(0.600",15.24mm) 包装:管件
T89C51CC02UA-RATIM 功能描述:IC 8051 MCU FLASH 16K 32VQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:AT89C CAN 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR,WDT 输入/输出数:32 程序存储器容量:32KB(32K x 8) 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP(0.600",15.24mm) 包装:管件
T89C51CC02UA-SISIM 功能描述:IC 8051 MCU FLASH 16K 28PLCC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:AT89C CAN 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR,WDT 输入/输出数:32 程序存储器容量:32KB(32K x 8) 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP(0.600",15.24mm) 包装:管件
T89C51CC02UA-SITIM 功能描述:IC 8051 MCU FLASH 16K 28PLCC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:AT89C CAN 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR,WDT 输入/输出数:32 程序存储器容量:32KB(32K x 8) 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP(0.600",15.24mm) 包装:管件
T89C51CC02UA-TDSIM 功能描述:IC 8051 MCU FLASH 16K 24-SOIC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:AT89C CAN 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR,WDT 输入/输出数:32 程序存储器容量:32KB(32K x 8) 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP(0.600",15.24mm) 包装:管件