Datasheet > ATA6565

ATA6565

更新时间： 2023-12-06 20:09:35

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
32页	1242K
描述
The Microchip ATA6565 is a fully integrated dual high-speed CAN transceiver with two completely in

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ATA6565 数据手册

ATA6565

least t_Filter, must be received via the bus. Dominant or

recessive bus levels shorter than t_Filterare always

ignored. The complete dominant-recessive-dominant

pattern, as shown in Figure 1-3, must be received within

the bus wake-up time-out time, t_Wake, to be recognized

as a valid wake-up pattern. This filtering leads to a higher

robustness against EMI and transients, and therefore,

significantly reduces the risk of an unwanted bus

wake-up.

1.2.3

UNDERVOLTAGE DETECTION ON

VCC PIN

If V_VCCdrops below its undervoltage detection level,

V_uvd(VCC)(see Section 2.0 “Electrical Characteris-

tics”), the transceiver switches off and disengages

from the bus until V_VCChas recovered. The low-power

wake-up comparator is only switched off during a VCC

undervoltage. The logic state of the STBY pin is

ignored until the VCC voltage has recovered.

1.2.5

OVERTEMPERATURE

PROTECTION

1.2.4

BUS WAKE-UP ONLY AT

DEDICATED WAKE-UP PATTERN

The output drivers are protected against overtemperature

conditions. If the junction temperature exceeds the shut-

down junction temperature, T_Jsd, the output drivers are

disabled until the junction temperature drops below T_Jsd

and the TXD pin is at a high level again. This TXD condi-

tion ensures that output driver oscillations, due to tem-

perature drift, are avoided.

Due to the implementation of the wake-up filtering, the

transceiver does not wake up when the bus is in a long

dominant phase; it only wakes up at a dedicated wake-up

pattern, as specified in the ISO 11898-2:2016. This

means for a valid wake-up, at least two consecutive

dominant bus levels for a duration of at least t_Filter, each

separated by a recessive bus level with a duration of at

FIGURE 1-4:

RELEASE OF TRANSMISSION AFTER OVERTEMPERATURE CONDITION

Failure

Overtemp

Overtemperature

TXD

V_VCC

GND

BUS V_DIFF

(CANH-CANL)

RXD

V_VCC

GND

DS20005782E-page 6

 2017-2020 Microchip Technology Inc.

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