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TOSHIBA Bipolar Digital Integrated Circuit Silicon Monolithic
Quartz PLL Motor Control
The TC9242P, TC9242F are CMOS LSIs developed for
controlling the motor speed.
Since an 8 bit D/A converter system has been employed for each
of the speed control system (AFC) and the phase control system
(APC).
Offers improved linearity.
With frequency division ratios of 1/3, 1/4 and 1/5 the standard
divider is ideal for laser scanner motors.
Features
•
Crystal can be used up to 20 MHz, and crystal reference
dividing frequency is selectable from three positions of 1/3, 1/4
and 1/5.
•
Lock range can be selected from two positions of 1/20 and
1/27.
•
External oscillator makes possible fine adjustment of speed.
•
Lock detection output and reverse rotation signal output are
provided.
•
Package is DIP16 pin and SOP16 pin.
Pin Assignment
(top view)
TC9242P,TC9242F
TC9242P
TC9242F
Weight
DIP16-P-300-2.54A: 1.00 g (typ.)
SOP16-P-300-1.27: 0.16 g (typ.)
1
TC9242P/F
2003-07-03
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Related Manuals for Toshiba TC9242P
Summary of Contents for Toshiba TC9242P
- Page 1 TC9242P/F TOSHIBA Bipolar Digital Integrated Circuit Silicon Monolithic TC9242P,TC9242F Quartz PLL Motor Control The TC9242P, TC9242F are CMOS LSIs developed for controlling the motor speed. Since an 8 bit D/A converter system has been employed for each TC9242P of the speed control system (AFC) and the phase control system (APC).
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Page 2: Block Diagram
TC9242P/F Block Diagram Functional Explanation of Each Terminal Pin No. Symbol Pin Name Functional & Operation Explanation Remarks = 5 V ± 0.5 V is applied. Power Terminal Ground Terminal Ground Crystal Oscillation With a built-in feedback Crystal oscillator is connected. -
Page 3: Explanation Of Operation
TC9242P/F Explanation of Operation 1. Crystal Oscillation Terminals (X • The crystal oscillator is used by connecting as shown below. Note 1: CL of 10~30 pF is appropriate. • Crystal oscillation frequency is calculated by the following equation according to number of FG pulses of a motor to be used. - Page 4 TC9242P/F <when not using the crystal oscillator circuit> 2. Reference Frequency Input/Output Terminals (CP , CP • Divided output from the crystal reference frequency divider is available at CP , which is normally connected to CP • When an external oscillator (CR oscillator, etc.) is connected to CP , motor speed can be finally adjusted.
- Page 5 TC9242P/F 4. Lock Range Switching Terminal (N/W) This terminal is for switching the Lock range with a pull-up resistor and chattering preventive circuit. (truth table) Divided Lock Range Frequency +3.4~−3.9% of reference cycle +4.6~−5.3% of reference cycle H or NC CAUTION reference frequency FS = f /N ×...
- Page 6 TC9242P/F AFC Output Change Status for FG APC Output Change Status for Phase Difference φ φ φ φ Frequency • AFC and APC timing chart within lock range. AFC (speed control system) APC (phase control system) 6. Lock Detecting Terminal (LD) •...
- Page 7 TC9242P/F 8. Reverse Signal Output Terminal (RV) • Reverse signal for braking the motor at time of switching of Lock range from 1/20 to 1/27 or the operation from RUN to STOP is output through this terminal. • Change of RV output status...
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Page 8: Maximum Ratings
TC9242P/F (Ta = = = = 25°C) Maximum Ratings Characteristics Symbol Rating Unit −0.3~7.0 Supply voltage −0.3~V + 0.3 Input voltage Power dissipation −40~85 Operating temperature °C −65~150 Storage temperature °C (unless otherwise specified Ta = = = = 25°C, V... -
Page 9: Test Circuit
TC9242P/F Test Circuit 1. Operating Supply Current I 2. X Operating Frequency Range f 3. CP Operating Frequency Range f 4. FG Input Sensitivity V 5. Amplifier Feedback Resistor R 2003-07-03... -
Page 10: Application Circuit
TC9242P/F Application Circuit • Example of crystal oscillation frequency calculation. When FG’ (number of FG pulse) = 180 pulses and R (revolution of motor) = 200 rpm., if the dividing frequency of reference divider and lock range is set at N = 5 dividing frequency and N/W = 20, the crystal oscillation... -
Page 11: Package Dimensions
TC9242P/F Package Dimensions Weight: 1.00 g (typ.) 2003-07-03... - Page 12 TC9242P/F Package Dimensions Weight: 0.16 g (typ.) 2003-07-03...
- Page 13 • The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others.