ata5830 ATMEL Corporation, ata5830 Datasheet
ata5830
Available stocks
Related parts for ata5830
ata5830 Summary of contents
Page 1
Features • 2-Phase 1 A Stepping Motor Driver • Compensated Half Step Operation • Chopper Current Control • Unidirectional Single Wire Bus Interface with Error Feedback • Intelligent Travel Operation Control • Referencing by Extending or Retracting Application • Dynamic ...
Page 2
Figure 1. Block Diagram VDD VSS VBAT1A SM1A SRA SM2A VBAT2A Pin Configuration Figure 2. Pinning HP-VFQFP-N28 ATA6830 2 Voltage Regulator UART Command Interpreter Test Logic VBAT1A 1 n.c. 2 SM1A 3 MLP ...
Page 3
Pin Description Pin Symbol Function 1 VBAT1A Battery voltage 2 n.c. Not connected 3 SM1A Connection for stepping motor winding A 4 SRA Sense resistor A connection 5 SM2A Connection for stepping motor winding A 6 n.c. Not connected 7 ...
Page 4
Functional Description Analog Blocks ATA6830 4 Figure 3. Analog Blocks VBAT Bias Oscillator Bandgap Generator COS RSET AGND The circuit contains an integrated 5 V regulator to supply the internal logic and analog circuit blocks. The regulator uses an adjusted ...
Page 5
Digital Blocks Figure 4. Digital Blocks Clk Reset BUS VREF Error Timer 4575B–BCD–01/03 UART shiftclk Data Clock Recognition Recovery bitstream & Parity-Check Bitstream rxd Recovery Error Signals Figure 4 shows all digital blocks of the circuit. The stepping motor will ...
Page 6
Stepping Motor Driver Figure 5. Stepping Motor Driver Stepper Motor Control Clk Reset Data Communication ATA6830 6 Driver Logic VBAT SM1x SM2x SRx Vref Shunt Figure 5 shows the diagram of one H-bridge driver stage. It consists of two NMOS ...
Page 7
Figure 6. Synchronization Sequence START BIT Between two commands a pause has to be included. This is necessary for a clear rec- ogition of a new message frame (command). Figure 7 shows the timing diagram of two commands. Figure ...
Page 8
Bus Commands Table 1. Bus Commands Bus Command Synchronization Reference run (extend) Reference run (retract) New position (0 = full extension) New position (0 = full retraction) New position (testmode full extension) New position (testmode full ...
Page 9
Power-up Sequence 4575B–BCD–01/03 After power-up the circuit has to be synchronized and a reference run has to be exe- cuted before a position command can be carried out. Figure 9 shows a timing diagram on how the necessary sequences follow ...
Page 10
Figure 10. Flow Diagram for the Power-up Sequence cruise control ATA6830 10 reset state N synchronization Y idle state N 3 successive reference run commands Y reference run Y new position? N idle state 4575B–BCD–01/03 ...
Page 11
Reference Run Cruise Control 4575B–BCD–01/03 In normal operation, new position commands are transmitted as absolute values. To drive the stepping motor to these absolute positions, the circuit has to know the motor’s zero position. Therefore, the stepping motor has to ...
Page 12
ATA6830 12 Figure 11. Cruise Control frequency present frequency minimum frequency (300 Hz) present position Table 3. Frequency Ramp Number Step Frequency (Hz ...
Page 13
Step Operation Chopper Current Control 4575B–BCD–01/03 If the chip temperature exceeds the overtemperature warning threshold, the step speed is reduced to 300 Hz. If the chip temperature rises further the output driver is shut off. Table 4. Maximum Step Frequency ...
Page 14
Exception Handling ATA6830 14 Figure 13. Chopper Current Control turn on signal I max coil current flyback comparator shunt resistor voltage blanking time Figure 14. Current Flow in Halfbridge ON OFF ON OFF a) During operation, different exceptional states or ...
Page 15
Absolute Maximum Ratings Parameters Power supply (t < 400 ms) DC power supply DC output current BUS input voltage Human body model Charged device model Storage temperature Operating temperature Maximum junction temperature 4575B–BCD–01/03 Travel operation is suspended when overtemperature is ...
Page 16
Thermal Resistance Parameters Thermal resistance junction-case Thermal resistance junction-ambient Operating Range Parameters Power supply range Operating temperature range Electrical Characteristics No. Parameters Test Conditions 1 Supply Supply current V 1.1 (no motor current) Supply voltage Normal operation 1.2 1.3 V ...
Page 17
Electrical Characteristics (Continued) No. Parameters Test Conditions Output current Output stage off 5.2 Output current Hold mode 5.3 Output current Test mode 5.4 Output current Normal mode 5.5 Output current Normal mode 5.6 (T <0°C) Output current Halfstep 5.7 compensation ...
Page 18
Electrical Characteristics (Continued) No. Parameters Test Conditions 6.13 Threshold voltage 11.0 V comparator, rising edge 6.14 Threshold voltage 11.0 V comparator, falling edge 6.15 Hysteresis 11.0 V comparator 6.16 Threshold voltage 20.0 V comparator, rising edge 6.17 Threshold voltage 20.0 ...
Page 19
Electrical Characteristics (Continued) No. Parameters Test Conditions Delay time 2 following 7.2 commands Pause time Between high and low 7.3 byte 7.4 Clamping time Bus error clamping 8 Logic Reference run Commands in series 8.1 detection to execute first reference ...
Page 20
Figure 16. Application Circuit ATA6830 20 GND IGN MLP 7x7mm 0.8mm pitch ATA6830 4 28 lead 5 ...
Page 21
Table 5. Bill of Material Reference Component C1 Oscillator capacitor C2 Bus input capacitor C3 Ceramic capacitor C4 Capacitor C5 Capacitor C6 Capacitor D1 Rectifier R1 Reference resistor R2 Bus input resistor R3 Shunt resistor side A R4 Shunt ...
Page 22
Ordering Information Extended Type Number ATA6830-PKH Package Information The package is a thermal power package MLF 7 ´ 7 with a soldered leadframe and 28 pins. The overall size is 7 ´ ATA6830 22 Package Remarks 7 mm ...
Page 23
... Atmel Corporation 2003. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein ...