MC34911BAC

MC34911BAC is a LIN system-based chip with a DC motor pre-driver. It is a SMARTMOS Serial Peripheral Interface (SPI) controlled System Basis Chip (SBC), combining many frequently used functions in an MCU based system, plus a Local Interconnect Network transceiver. The device provides full SPI readable diagnostics and a selectable timing watchdog for detecting errant operations. The LIN protocol specification 2.0 and 2.1 compliant LIN transceiver has wave shaping circuitry which can be disabled for higher data rates. It can be pulse-width modulated (PWM). Two high-voltage inputs are available for use in contact monitoring or as external wake-up inputs. These inputs can be used as high-voltage Analog Inputs. The voltage on these pins is divided by a selectable ratio and is available via an analogue multiplexer. Applications include window lift, mirror switch, door lock, sunroof, and light control.

• Full-duplex SPI interface at frequencies up to 4.0MHz
• LIN transceiver capable of up to 100Kbps with wave shaping
• Two high-voltage analogue/logic Inputs, configurable window watchdog
• 5V low drop regulator with fault detection and low-voltage reset (LVR) circuitry
• Nominal operating voltage range from 5.5 to 18V (-40°C ≤ TA ≤ 85°C)
• Normal mode (IOUT at VDD = 10 mA), LIN recessive state is 4.5mA typ (-40°C ≤ TA ≤ 85°C)
• Cyclic sense supply current adder is 10µA typ (5.5V ≤ VSUP ≤ 18V, -40°C ≤ TA ≤ 85°C)
• Dropout voltage is 0.1V typ (VDD = 50mA, -40°C ≤ TA ≤ 85°C)
• External resistor range from 20 to 200Kohm (5.5V ≤ VSUP ≤ 18V, -40°C ≤ TA ≤ 85°C)
• 32-LQFP package, operating ambient temperature range from -40 to 85°C