ATA663431/ATA663454 (1) LIN SBC including LIN Transceiver, Voltage Regulator, Window Watchdog and High-side Switch DATASHEET Features Supply voltage up to 40V Operating voltage V = 5V to 28V VS Supply current Sleep mode: typically 10A Silent mode: typically 47A Very low current consumption at low supply voltages (2V < V < 5.5V): VS typically 150A Linear low-drop voltage regulator, 85mA current capability: MLC (multi-layer ceramic) capacitor with 0 ESR Normal, fail-safe, and silent mode Atmel ATA663454: V = 5.0V 2% CC Atmel ATA663431: V = 3.3V 2% CC Sleep mode: VCC is switched off VCC undervoltage detection with open drain reset output (NRES, 4ms reset time) Voltage regulator is short-circuit and over-temperature protected Adjustable watchdog time via external resistor Negative trigger input for watchdog Limp Home watchdog failure output LIN physical layer according to LIN 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2 Bus pin is overtemperature and short-circuit protected versus GND and battery High-side switch Wake-up capability via LIN Bus (100s dominant), WKin pin and CL15 pin Wake-up source recognition TXD time-out timer Advanced EMC and ESD performance Fulfills the OEM Hardware Requirements for LIN in Automotive Applications Rev.1.3 Interference and damage protection according to ISO7637 Qualified according to AEC-Q100 Package: DFN16 with wettable flanks (Moisture Sensitivity Level 1) Note: 1. LIN SBC: LIN system basis chip 9232H-AUTO-09/141. Description Designed in compliance with LIN specifications 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2, the Atmel ATA663431/ATA663454 is a new generation of system basis chips with a fully integrated LIN transceiver, a low-drop voltage regulator (3.3V/5V/85mA), a window watchdog, and a high-side switch. This combination makes it possible to develop simple, but powerful, slave nodes in LIN-bus systems. Atmel ATA663431/ATA663454 is designed to handle low-speed data communication in vehicles (such as in convenience electronics). Improved slope control at the LIN driver ensures secure data communication up to 20Kbaud. The bus output is designed to withstand high voltage. Sleep mode and silent mode guarantee a minimized current consumption even in the case of a floating or short-circuited LIN bus. Figure 1-1. Block Diagram Atmel ATA663431/ATA663454 15 VS V CC Normal and Receiver Fail-safe - RXD 1 Mode + 14 LIN RF-filter 12 WKin CL15 11 HV Input HV Input (positive edge) (negative edge) Wake-up module V CC Short-circuit and overtemperature protection Slew rate control TXD 4 TXD Time-Out Timer Voltage regulator 16 VCC Sleep Normal/Silent/ mode Control V Fail-safe Mode EN VCC CC 2 unit 3.3V/5V switched 3 off NRES Undervoltage reset WDOSC 7 Window Watchdog 13 GND Watchdog Oscillator V CC 9 HSout NTRIG 5 High Side Switch MODE 6 8 HSin LH 10 2 ATA663431/ATA663454 DATASHEET 9232HAUTO09/14