Electronic Components Datasheet Search |
|
READVAR16 Datasheet(PDF) 7 Page - Freescale Semiconductor, Inc |
|
READVAR16 Datasheet(HTML) 7 Page - Freescale Semiconductor, Inc |
7 / 36 page Pin Descriptions MC3PHAC Monolithic Intelligent Motor Controller, Rev. 2 Freescale Semiconductor 7 17 RETRY_TxD In standalone mode, this pin is an output that drives low to indicate the parameter mux input pin is reading an analog voltage to specify the time to wait after a fault before re-enabling the PWM outputs. In PC master software mode, this pin is an output that transmits UART serial data. 18 RBRAKE Output which is driven to a logic high whenever the voltage on the dc bus input pin exceeds a preset level, indicating a high bus voltage. This signal is intended to connect a resistor across the dc bus capacitor to prevent excess capacitor voltage. 19 DT_FAULTOUT In standalone mode, this pin is an output which drives low to indicate the parameter mux input pin is reading an analog voltage to specify the dead-time between the on states of the top and bottom PWM signals for a given motor phase. In PC master software mode, this pin is an output which goes low whenever a fault condition occurs. 20 VBOOST_MODE At startup, this input is sampled to determine whether to enter standalone mode (logic high) or PC master software mode (logic low). In standalone mode, this pin is also used as an output that drives low to indicate the parameter mux input pin is reading an analog voltage to specify the amount of voltage boost to apply to the motor. 21 VDD +5-volt digital power supply to the MC3PHAC 22 VSS Digital power supply ground return for the MC3PHAC 23 FWD Input which is sampled to determine whether the motor should rotate in the forward or reverse direction 24 START Input which is sampled to determine whether the motor should be running. 25 MUX_IN In standalone mode, during initialization this pin is an output that is used to determine PWM polarity and base frequency. Otherwise, it is an analog input used to read several voltage levels that specify MC3PHAC operating parameters. 26 SPEED In standalone mode, during initialization this pin is an output that is used to determine PWM polarity and base frequency. Otherwise, it is an analog input used to read a voltage level corresponding to the desired steady-state speed of the motor. 27 ACCEL In standalone mode, during initialization this pin is an output that is used to determine PWM polarity and base frequency. Otherwise, it is an analog input used to read a voltage level corresponding to the desired acceleration of the motor. 28 DC_BUS In standalone mode, during initialization this pin is an output that is used to determine PWM polarity and base frequency. Otherwise, it is an analog input used to read a voltage level proportional to the dc bus voltage. 1. Correct timing of the MC3PHAC is based on a 4.00 MHz crystal or ceramic resonator. Follow the crystal/resonator manufacturer’s recommendations, as the crystal/resonator parameters determine the external component values required for maximum stability and reliable starting. The load capacitance values used in the oscillator circuit design should include all stray capacitances. Table 2. MC3PHAC Pin Descriptions (Sheet 2 of 2) Pin Number Pin Name Pin Function |
Similar Part No. - READVAR16 |
|
Similar Description - READVAR16 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |