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Atmel ATA6661/ATA6662
2. Hardware Description
In the following sections only the normal operating conditions will be described. For detailed
information concerning the mentioned features, refer to the corresponding datasheet.
2.1
2.2
2.2.1
2.2.2
2.2.3
Power Supply (VBAT, +5V and GND)
The development board requires an external 5.7V to 18V DC power supply between the termi-
nals VBAT and GND. The input circuit is protected against inverse-polarity with the protection
diode D1, so that there is normally a difference between the VBAT and VS level of approxi-
mately 0.7V.
The DC voltage at pin +5V is only needed when the pull-up resistor for the pin RXD is to be
activated.
LIN Interface (LIN, TXD and RXD)
Bus Pin (LIN)
A low-side driver with internal current limitation, thermal shutdown, and an internal pull-up
resistor in compliance with LIN spec 2.0 is implemented. LIN receiver thresholds are compati-
ble to the LIN protocol specification.
On the board at the LIN pin there is a 220-pF capacitor to ground. Additionally, the two extra
components (diode D2 (LL4148) in series with resistor R3 (1 k Ω )) necessary to use the devel-
opment board for a LIN master application have designated placeholders for convenient
mounting.
Input Pin (TXD)
This pin is the microcontroller interface to control the state of the LIN output. TXD must be
pulled to ground in order to have the LIN bus low. If TXD is high, the LIN output transistor is
turned off and the bus is in the recessive state, pulled up by the internal resistor. If TXD is low,
the LIN output transistor is turned on and the bus is in the dominant state. An internal timer
prevents the bus line from being driven permanently in the dominant state. If TXD is forced to
low longer than t DOM > 20 ms, the LIN bus driver is switched to the recessive state.
Output Pin (RXD)
This pin reports the state of the LIN bus to the microcontroller. LIN high (recessive state) is
reported by a high level at RXD, LIN low (dominant state) is reported by a low level at RXD.
The output is short-circuit protected.
Please note that the Atmel ? ATA6661/ATA6662 has to be in normal mode in order to have the
communication via LIN enabled.
3
4968C–AUTO–05/11
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相关代理商/技术参数
ATA6662-TAQY
功能描述:射频收发器 LIN Transceiver RoHS:否 制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray
ATA6662-TAQY 19
制造商:Atmel Corporation 功能描述:IC LIN TX, 20Kbaud, 5V to 27V, SOIC-8, Output Voltage:5V, Output Current:50mA, B
ATA6662-TAQY 19
功能描述:TXRX LIN 2.1 3.3V/5V 8SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:121 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:3 V ~ 3.6 V 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-DFN（3x3） 包装:管件
ATA6662-TAQY19
功能描述:LIN 收发器 LIN Transceiver RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8
ATA6663
制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:LIN Transceiver
ATA6663-EK
功能描述:界面开发工具 Demoboard LIN Transc. RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V
ATA6663-FAQW
功能描述:LIN 收发器 LIN Transceiver RoHS:否 制造商:NXP Semiconductors 工作电源电压: 电源电流: 最大工作温度: 封装 / 箱体:SO-8
ATA6663-FAQW-1
制造商:Atmel Corporation 功能描述:LIN TRANSCEIVER - Tape and Reel 制造商:Atmel Corporation 功能描述:IC TXRX LIN DUAL 8DFN