ATA6620

更新时间： 2024-02-07 16:46:02

品牌	Logo	应用领域
爱特美尔 - ATMEL		稳压器
页数	文件大小	规格书
19页	235K
描述
LIN ABUS TRANSCEIVER WITH INTEGRATED VOLTAGE REGULATOR

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ATA6620 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	LEAD FREE, SO-8
针数：	8	Reach Compliance Code：	unknown
HTS代码：	8542.39.00.01	风险等级：	5.82
JESD-30 代码：	R-PDSO-G8	JESD-609代码：	e3
长度：	4.925 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	8
最高工作温度：	125 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	LSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, LOW PROFILE
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1.65 mm	标称供电电压：	13.5 V
表面贴装：	YES	电信集成电路类型：	INTERFACE CIRCUIT
温度等级：	AUTOMOTIVE	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	3.8 mm	Base Number Matches：	1

ATA6620 数据手册

ATA6620 [Preliminary]

4.3

Sleep Mode

A falling edge at EN while TXD is low switches the IC into Sleep mode. The TXD Signal has to

be logic low during the Mode Select window (Figure 4-4 on page 8). We recommend using the

same microcontroller port for EN as for TXD; in this case the mode change is only one

command.

In Sleep mode the transmission path is disabled. Supply current from V_Battis typically

I_VSsleep= 10 µA. The V_CCregulator is switched off; NRES and RXD are low. The internal slave

termination between pin LIN and pin VS is disabled to minimize the power dissipation in case pin

LIN is short-circuited to GND. Only a weak pull-up current (typically 10 µA) between pin LIN and

pin VS is present.

A falling edge at pin LIN followed by a dominant bus level maintained for a certain time period

(T_bus) results in a remote wake-up request. The device switches from Sleep mode to Pre-normal

mode. The V_CCregulator is activated and the internal LIN slave termination resistor is switched

on. The remote wake-up request is indicated by a low level at pin RXD to interrupt the microcon-

troller. (Figure 4-5 on page 8)

With EN high you can switch directly from Silent to Normal mode. In the application where the

ATA6620 supplies the microcontroller, the wake-up from Sleep mode is only possible via pin

LIN.

4.4

4.5

Pre-normal Mode

At system power-up the device automatically switches to Pre-normal mode. The voltage regula-

tor is switched on (V_CC= 5V/50 mA) (see Figure 4-4 on page 8) after typically t_VCC= 1 ms. The

NRES output switches to low for t_res= 10 ms and sends a reset to the microcontroller. LIN com-

munication is switched off, and the undervoltage detection is active.

A power-down of V_Batt(V_S< 4V) during Silent or Sleep mode switches into Pre-normal mode

after powering up the IC.

Unpowered Mode

If battery voltage is connected to the application circuit (Figure 4-6 on page 9), the voltage at the

VS pin increases due to the block capacitor. When V_Sis higher than the V_Sundervoltage thresh-

old, V_Sth, the IC-mode changes from Unpowered to Pre-normal mode. The V_CCoutput voltage

reaches nominal value after t_VCC. This time depends on the V_CCcapacitor and the load.

NRES is low for the reset time delay t_Reset; no mode change is possible during this time.

4850A–AUTO–02/05

1...4 5 678 9 10...19

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