ATA663232/55
LIN System Basis Chip Including LIN Transceiver, Voltage
Regulator and Wake-Input
Features
General Description
The ATA663232/55 system basis chip is a fully
integrated LIN transceiver, designed according to the
LIN specification 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2,
with a low drop voltage regulator (3.3V/5V/85 mA) and
a high voltage wake-input. The combination of voltage
regulator and bus transceiver makes it possible to
develop simple but powerful nodes in LIN bus systems.
• ISO 26262 Functional Safety Ready
• Supply Voltage up to 40V
• Operating Voltage VVS = 5V to 28V
• Supply Current
- Sleep Mode: Typically 9 μA
- Silent Mode: Typically 47 μA
- Very Low Current Consumption at Low
Supply Voltages (2V < VVS < 5.5V): Typically
130 μA
ATA663232/55 is designed to handle the low speed
data communication in vehicles (for example, in
convenience electronics). Improved slope control at
the LIN driver ensures secure data communication up
to 20 Kbaud. The bus output is designed to withstand
high voltage. Sleep mode and Silent mode guarantee
minimized current consumption even in the case of a
floating or a short circuited LIN bus.
• Linear Low Drop Voltage Regulator, 85 mA
Current Capability:
- MLC (Multi-Layer Ceramic) Capacitor with
0Ω ESR
- Normal, Fail-Safe and Silent Mode
ATA663255: VVCC = 5.0V ± 2%
ATA663232: VVCC = 3.3V ± 2%
The voltage regulator is a fully integrated low drop
voltage regulator, with 5V/3.3V output voltage and
85 mA current capability. It is especially designed for
the automotive environment. A key feature is that the
current consumption is always below 170 μA (without
load), even if the supply voltage is below the regulator’s
nominal output voltage.
- Sleep Mode: VCC Is Switched Off
• VCC Undervoltage Detection with Internal Reset
(NRES_int)
• Voltage Regulator Is Short Circuit and
Overtemperature Protected
Note:
The current LIN standards use the
terminology "Master" and "Slave.”
The LIN standard groups have decided
that the terms "Commander" and
"Responder" will be used in future.
• LIN Physical Layer According to LIN 2.0, 2.1, 2.2,
2.2A and SAEJ2602-2
• Wake-Up Capability via LIN Bus (100 μs
Dominant) and WKin Pin (100 μs Low Level)
• Wake-Up Source Recognition
• TXD Time-Out Timer
Package Type
• Bus Pin Is Overtemperature and Short Circuit
Protected versus GND and Battery
ATA663232/55
3 mm x 3 mm 8-Lead VDFN*
• Advanced EMC and ESD Performance
• Fulfills the “OEM Hardware Requirements for LIN
in Automotive Applications”, Version.1.3
ATA663232
ATA663255
RXD
VCC
• Interference and Damage Protection According to
ISO7637
EN
WKin
TXD
VS
LIN
GND
9DFN8
3 x 3
• AEC-Q100 and AEC-Q006 Qualified
• Available in 8-Pin, 3 mm x 3 mm VDFN Package
with Wettable Flanks (Moisture Sensitivity Level 1)
* Includes Exposed Thermal Pad (EP);
see Table 1-4.
Applications
• LIN Networks in Automotive
• Industrial
• Medical
• Consumer Applications
2017-2021 Microchip Technology Inc.
DS20005878B-page 1
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