ASM3P2856A ASM3P2856B November 2006 rev0.1 Custom Clock generator for LCD Projector Features Product Description • Custom Clock Generator for LCD Projector ASM3P2856A/B generate the required four custom clock • Generates EMI optimized clock signals for frequencies LCD Projector system 14.7456MHz crystal is used to generate a 14.7456MHz Uses an inexpensive 14.7456 MHz crystal for used by the microcomputer, a 27MHz used by Video, a generating the required Outputs non-spread 65MHz, and a centre spread 65MHz clock used Frequency outputs: by the LCD projector system. The spread spectrum clock • • • CLK1 : 27.002MHz for the LCD Projector. An has +/- 0.5% or +/- 1% spread options. (± 20 ppm) inexpensive The spread • CLK2 : 14.7456MHz (Zero ppm) spectrum clock of ASM3P2856A/B reduces electromagnetic • CLK3 : 65MHz (± 15 ppm) interference (EMI) at the clock source. This allows • CLK4,CLK5 : 65MHz (±15 ppm) Spread significant system cost savings by reducing the number of circuit board layers and shielding that are required to pass Spectrum Clock EMI regulations. • ASM3P2856A: +/- 1% centre spread ASM3P2856B: selectable +/-1.0% & +/-1.5% Centre Spread option • Supply voltage range 3.3V ± 0.3V. • Available in 16 Pin TSSOP • Available in Commercial Temperature range Applications ASM3P2856A/B is targeted for use in LCD Projectors. Block Diagram VDD SSON SS% CLK1 XIN XOUT CLK2 Crystal Oscillator PLL CLK3 CLK4 CLK5 GND PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018 www.pulsecoresemi.com Notice: The information in this document is subject to change without notice. ASM3P2856A ASM3P2856B November 2006 rev 0.1 Pin Configuration XIN 1 16 VDD XIN 1 16 VDD XOUT 2 15 NC XOUT 2 15 NC VDD 3 14 GND VDD 3 14 GND VDD 4 13 NC VDD 4 13 SSON GND 5 12 NC GND 5 12 SS% GND 6 11 CLK5 GND 6 11 CLK5 CLK1 7 10 CLK4 CLK1 7 10 CLK4 CLK2 8 9 CLK3 CLK2 8 9 CLK3 ASM3P2856A ASM3P2856B Pin Description Pin# Pin Name Type Description 1 XIN I 2 XOUT O Connection to crystal or external reference frequency input. This pin has dual functions. It can be connected either to an external crystal or an external reference clock. Connection to crystal. If using an external reference clock, this pin must be left unconnected. 3 VDD P Power supply for the entire Chip 4 VDD P Power supply for the entire Chip 5 GND P Ground to entire chip 6 GND P Ground to entire chip 7 CLK1 O 27.002 MHz Clock output. Refer to Input & Output Frequency Table for details. 8 CLK2 O 9 CLK3 O 10 CLK4 O 11 CLK5 O Reference Clock Output. Refer to Input & Output Frequency Table for details. 65 MHz non-spread Clock output. Refer to Input & Output Frequency Table for details. 65 MHz Spread Spectrum Clock Output. Refer to Input & Output Frequency Table for details. 65 MHz Spread Spectrum Clock Output. Refer to Input & Output Frequency Table for details. NC - SS% I NC - SSON I 14 GND P Ground to entire chip 15 NC - No Connection 16 VDD P Power supply for the entire Chip 12 13 No Connection for ASM3P2856A Spread percentage selection pin for ASM3P2856B. Refer to Spread Selection Table for details. Has an internal pull down resistor No Connection for ASM3P2856A Spread spectrum selection. When SSON is HIGH, spread spectrum is enabled and when LOW, it turns off the spread spectrum. Connect the pin to ground When Spread Spectrum feature is not required. Has an internal pull up resistor. Custom Clock generator for LCD Project Notice: The information in this document is subject to change without notice. 2 of 8 ASM3P2856A ASM3P2856B November 2006 rev 0.1 Input & Output Clock Frequency Table Input Frequency Output Frequencies Frequency Accuracy of synthesized clocks CLK1 27.002 MHz ±20 ppm CLK2 14.7456 MHz Zero ppm CLK3 65 MHz Non- Spread clock ±15 ppm CLK4 65 MHz Spread Spectrum Clock ±15 ppm 14.7456 MHz (+/-0.5 or +/- 1%) 65 MHz Spread Spectrum Clock CLK5 ±15 ppm (+/-0.5 or +/-1%) Spread Selection Table SS% Spread Percentage 0 1 ± 1.0% ± 1.5% Typical Application Schematic for LCD Projector + 3.3V 14.7456 MHz fundamental Crystal + 3.3V 0.1uF 27.002MHz Clock 14.7456MHz Clock 1 XIN VDD 16 2 XOUT NC 15 3 VDD GND 14 SSON 4 VDD 13 ASM3P2856B Make SSON Pin HIGH to enable Spread Spectrum 5 GND SS% 12 SS% Pin selects different Spread deviations 6 GND CLK5 11 65MHz SS Clock 7 CLK1 CLK4 10 65MHz SS Clock 8 CLK2 CLK3 9 65MHz Clock Custom Clock generator for LCD Project Notice: The information in this document is subject to change without notice. 3 of 8 ASM3P2856A ASM3P2856B November 2006 rev 0.1 Absolute Maximum Ratings Symbol VDD VIN TSTG Parameter Rating Power Supply Voltage relative to GND Unit -0.5 to +4.6 Input Voltage relative to GND (Input Pins) -0.5 to VDD+0.5 Storage temperature V -65 to +125 °C 0 to 70 °C TA Operating temperature Ts Max. Soldering Temperature (10 sec) 260 °C TJ Junction Temperature 150 °C 2 KV TDV Static Discharge Voltage (As per JEDEC STD22- A114-B) Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect device reliability. DC Electrical Characteristics (Test condition: All parameters are measured at room temperature (+ 25°C) unless otherwise stated) Symbol Parameter Min Typ Max Unit VIL Input low voltage GND - 0.3 - 0.8 V VIH Input high voltage 2.0 - VDD + 0.3 V IIL Input low current - - -35 µA IIH Input high current - - 35 µA IXOL XOUT output low current ([email protected], VDD=3.3V) - 3 - mA IXOH XOUT output high current ([email protected], VDD=3.3V) - 3 - mA VOL Output low voltage (VDD = 3.3V, IOL = 10mA) - - 0.4 V VOH Output high voltage (VDD = 3.3V, IOH = 10mA) 2.5 - - V IDD Static supply current* - TBD - µA ICC Dynamic supply current ( VDD =3.3V) - TBD - mA 3.0 3.3 3.6 V Power-up time (first locked cycle after power-up) - - 5 mS Output impedance - TBD - Ω VDD tON ZOUT Operating Voltage * XIN is pulled low Custom Clock generator for LCD Project Notice: The information in this document is subject to change without notice. 4 of 8 ASM3P2856A ASM3P2856B November 2006 rev 0.1 AC Electrical Characteristics Symbol XIN FOUT Parameter Min Typ Max Unit - 14.7456 - MHz CLK1 - 27.002 - CLK2 - 14.7456 - CLK3 - 65 - Input frequency Output frequency CLK4 (SS Clock ) 65 CLK5 (SS Clock ) 65 For SS% = 0 - ± 1.0 - MHz fd Frequency Deviation (CLK4, CLK5 ) tLH* Output rise time (measured from 0.8 to 2.0V) - 1.4 - nS tHL * Output fall time (measured at 2.0V to 0.8V) - 1.2 - nS tJC Jitter (Cycle to cycle) - TBD - pS tD Output duty cycle 40 50 60 % ± 1.5 For SS% = 1 % * tLH and tHL are measured into a capacitive load of 15pF Custom Clock generator for LCD Project Notice: The information in this document is subject to change without notice. 5 of 8 ASM3P2856A ASM3P2856B November 2006 rev 0.1 Package Information 16-lead Thin Shrunk Small Outline Package (4.40-MM Body) 1 8 PIN 1 ID E 16 A A2 e B A1 Seating Plane C θ D 9 H L D Dimensions Symbol Inches Min Millimeters Max A Min Max 0.043 1.20 A1 0.002 0.006 0.05 0.15 A2 0.031 0.041 0.80 1.05 B 0.007 0.012 0.19 0.30 C 0.004 0.008 0.09 0.20 D 0.193 0.201 4.90 5.10 E 0.169 0.177 4.30 4.50 e 0.026 BSC 0.65 BSC H 0.252 BSC 6.40 BSC L 0.020 0.030 0.50 0.75 θ 0° 8° 0° 8° Custom Clock generator for LCD Project Notice: The information in this document is subject to change without notice. 6 of 8 ASM3P2856A ASM3P2856B November 2006 rev 0.1 Ordering Codes Ordering Code Marking Package Type Operating Range ASM3P2856AG-16-TT 3P2856AG 16-pin 4.4-mm TSSOP - TUBE, Green Commercial ASM3P2856AG-16-TR 3P2856AG 16-pin 4.4-mm TSSOP - TAPE & REEL,Green Commercial ASM3P2856BG-16-TT 3P2856BG 16-pin 4.4-mm TSSOP - TUBE, Green Commercial ASM3P2856BG-16-TR 3P2856BG 16-pin 4.4-mm TSSOP - TAPE & REEL,Green Commercial Device Ordering Information A S M 3 P 2 8 5 6 A G - 1 6 - T R R = Tape & Rzeel, T = Tube or Tray O = SOT S = SOIC T = TSSOP A = SSOP V = TVSOP B = BGA Q = QFN U = MSOP E = TQFP L = LQFP U = MSOP P = PDIP D = QSOP X = SC-70 DEVICE PIN COUNT F = LEAD FREE AND RoHS COMPLIANT PART G = GREEN PACKAGE, LEAD FREE, and RoHS DEVICE NUMBER X= Automotive I= Industrial P or n/c = Commercial (-40C to +125C) (-40C to +85C) (0C to +70C) 1 = Reserved 2 = Non PLL based 3 = EMI Reduction 4 = DDR support products 5 = STD Zero Delay Buffer 6 = Power Management 7 = Power Management 8 = Power Management 9 = Hi Performance 0 = Reserved PulseCore Semiconductor Mixed Signal Product Licensed under U.S Patent Nos 5,488,627 and 5,631,921 Custom Clock generator for LCD Project Notice: The information in this document is subject to change without notice. 7 of 8 ASM3P2856A ASM3P2856B November 2006 rev 0.1 PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200 Campbell, CA 95008 Tel: 408-879-9077 Fax: 408-879-9018 www.pulsecoresemi.com Copyright © PulseCore Semiconductor All Rights Reserved Preliminary Information Part Number: ASM3P2856A ASM3P2856B Document Version: v0.1 Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003 © Copyright 2006 PulseCore Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are trademarks or registered trademarks of PulseCore. All other brand and product names may be the trademarks of their respective companies. PulseCore reserves the right to make changes to this document and its products at any time without notice. PulseCore assumes no responsibility for any errors that may appear in this document. The data contained herein represents PulseCore's best data and/or estimates at the time of issuance. PulseCore reserves the right to change or correct this data at any time, without notice. If the product described herein is under development, significant changes to these specifications are possible. The information in this product data sheet is intended to be general descriptive information for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or customer. PulseCore does not assume any responsibility or liability arising out of the application or use of any product described herein, and disclaims any express or implied warranties related to the sale and/or use of PulseCore products including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual property rights, except as express agreed to in PulseCore’s Terms and Conditions of Sale (which are available from PulseCore). All sales of PulseCore products are made exclusively according to PulseCore's Terms and Conditions of Sale. The purchase of products from PulseCore does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any other intellectual property rights of PulseCore or third parties. PulseCore does not authorize its products for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant injury to the user, and the inclusion of PulseCore products in such life-supporting systems implies that the manufacturer assumes all risk of such use and agrees to indemnify PulseCore against all claims arising from such use. Custom Clock generator for LCD Project Notice: The information in this document is subject to change without notice. 8 of 8