ATA6563 datasheet(4/32 Pages) MICROCHIP

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ATA6562/3

DS20005790E-page 4



2017-2021 Microchip Technology Inc. and its subsidiaries

1.0

FUNCTIONAL DESCRIPTION

The ATA6562/3 is a stand-alone dual high-speed CAN

transceiver compliant with the ISO 11898-2, ISO

11898-2: 2016, ISO 11898-5 and SAE J2962-2 CAN

standards. It provides a very low current consumption

in Standby mode and wake-up capability via the CAN

bus. There are two versions available, only differing in

the function of pin 5:

• ATA6562: The pin 5 is the control input for Silent

mode NSIL, allowing the ATA6562 to only receive

data but not send data via the bus. The output

driver stage is disabled. The VIO line and the

VCC line are internally connected, this sets the

signal levels of the TXD, RXD, STBY, and NSIL

pins to levels compatible with 5V microcontrollers.

• ATA6563: The pin 5 is the VIO pin and should be

connected to the microcontroller supply voltage.

This allows direct interfacing to microcontrollers

with supply voltages down to 3V and adjusts the

signal levels of the TXD, RXD, and STBY pins to

the I/O levels of the microcontroller. The I/O ports

are supplied by the VIO pin.

1.1

Operating Modes

Each of the transceivers supports three operating

modes: Unpowered, Standby and Normal. The

ATA6562 additionally has the Silent mode. These

modes can be selected via the STBY and NSIL pin.

See Figure 1-1 and Table 1-1 for a description of the

operating modes.

FIGURE 1-1:

OPERATING MODES

TABLE 1-1:

OPERATING MODES

Mode

Inputs

Outputs

STBY

NSIL

Pin TXD

CAN Driver

Pin RXD

Unpowered

X(3)

Recessive

Standby

HIGH

X(3)

Recessive

Active(4)

Silent (only for ATA6562)

LOW

X(3)

Recessive

Active(1)

Normal

LOW

HIGH(2)

LOW

Dominant

LOW

HIGH(2)

HIGH

Recessive

HIGH

Note 1: LOW if the CAN bus is dominant, HIGH if the CAN bus is recessive.

2: Internally pulled up if not bonded out.

3: Irrelevant

4: Reflects the bus only for wake-up

Note: For the ATA6563 NSIL is internally set to “1”.

Unpowered

Mode

Standby

Mode

VCC < Vuvd(VCC)

Silent

Mode

VCC > Vuvd(VCC)

VCC < Vuvd(VCC)

STBY = 1

STBY = 0 and

(NSIL = 0 or

TXD = 0)

Normal

Mode

STBY = 0 and

NSIL = 1 and

TXD = 1 and

Error = 0

STBY = 1

NSIL = 1 and TXD = 1 and Error = 0

NSIL = 0 or Error = 1

ATA6562

Unpowered

Mode

Standby

Mode

VCC <Vuvd(VCC) or

VIO <Vuvd(VIO)

Silent

Mode *

STBY = 1

STBY = 0 and

TXD = 0

Normal

Mode

STBY = 0 and

TXD = 1 and

Error = 0

STBY = 1

TXD = 1 and Error = 0

Error = 1

ATA6563

VCC <Vuvd(VCC) or

VIO <Vuvd(VIO)

VCC <Vuvd(VCC) or

VIO <Vuvd(VIO)

VCC >Vuvd(VCC) or

VIO >Vuvd(VIO)

* Silent

ode is externally not accessible

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