MC33989PEG Freescale Semiconductor, MC33989PEG Datasheet - Page 18

• Manufacturer Part Number: MC33989PEG
• Description: SBC-HS
• Manufacturer: Freescale Semiconductor

FUNCTIONAL DESCRIPTION
INTRODUCTION
• One full protected voltage regulator with 200 mA total output current capability available at the VDD1 external pin
• Driver for an external path transistor for the V2 regulator function
• Reset, programmable watchdog function, interrupt, and four operational modes
• Programmable wake-up input and Cyclic Sense wake-up
• CAN high speed physical interface
RECEIVE AND TRANSMIT DATA (RXD AND TXD)
handler. TXD is an input and controls the CANH and CANL line state (dominant when TXD is LOW, recessive when TXD is
HIGH). RXD is an output and reports the bus state (RXD LOW when CAN bus is dominant, HIGH when CAN bus is recessive).
VOLTAGE DIGITAL DRAIN ONE (VDD1)
over-current and over-temperature. It includes an over-temperature pre-warning flag, which is set when the internal regulator
temperature exceeds 130 °C typical. When the temperature exceeds the over-temperature shutdown (170 °C typical), the
regulator is turned off.
threshold.
RESET (RST)
is not in reset mode. RST includes an internal pull-up current source. When RST is LOW, the sink current capability is limited,
allowing RST to be shorted to 5.0 V for software debug or software download purposes.
INTERRUPT (INT)
When an interrupt occurs, INT stays LOW until the interrupt source is cleared.
VOLTAGE SOURCE TWO (V2)
supply of the internal CAN interface. It is possible to connect V2 to an external 5.0 V regulator or to the VDD1 output when no
external series pass transistor is used. In this case, the V2CTRL pin must be left open.
VOLTAGE SOURCE 2 CONTROL (V2CTRL)
VOLTAGE SUPPLY (VSUP)
HIGH-SIDE ONE (HS1)
LEVEL 0-3 INPUTS (L0:L3)
read by SPI. These inputs can be used as wake-up events for the SBC when operating in the Sleep or Stop mode.
18
33989
The 33989 is an integrated circuit dedicated to automotive applications. Its functions include:
The RX and TX pins (receive data and transmit data pins, respectively) are connected to a microcontroller’s CAN protocol
The VDD1 pin is the output pin of the 5.0 V internal regulator. It can deliver up to 200 mA. This output is protected against
VDD1 includes an under-voltage reset circuitry, which sets the RST pin LOW when V
The Reset pin RST is an output that is set LOW when the device is in reset mode. The RST pin is set HIGH when the device
The Interrupt pin INT is an output that is set LOW when an interrupt occurs. INT is enabled using the Interrupt Register (INTR).
INT output also reports a wake-up event by a 10 μs typical pulse when the device is in Stop mode.
The V2 pin is the input sense for the V2 regulator. It is connected to the external series pass transistor. V2 is also the 5.0 V
The V2CTRL pin is the output drive pin for the V2 regulator connected to the external series pass transistor.
The VSUP pin is the battery supply input of the device.
The HS1 pin is the internal high side driver output. It is internally protected against over-current and over-temperature.
The L0:L3 pins can be connected to contact switches or the output of other ICs for external inputs. The input states can be
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
INTRODUCTION
DD1
Analog Integrated Circuit Device Data
is below the under-voltage reset
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