SAA4955HL Philips Semiconductors, SAA4955HL Datasheet
SAA4955HL
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SAA4955HL Summary of contents
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DATA SHEET SAA4955 2.9-Mbit field memory Product specification Supersedes data of 1999 Apr 29 File under Integrated Circuits, IC02 INTEGRATED CIRCUITS 2001 Jul 09 ...
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... I DD(tot) DD DD(O) ORDERING INFORMATION TYPE NUMBER NAME SAA4955HL LQFP44 plastic low profile quad flat package; 44 leads; body 10 SAA4955TJ SOJ40 plastic small outline package; 40 leads (J-bent); body width 10.16 mm 2001 Jul 09 The maximum storage depth is 245772 words A FIFO operation with full word continuous read and write could be used as a data delay, for example ...
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... DATA MUX DATA OUTPUT BUFFER ( 12) (34 to 36, 38 Q11 The pin numbers in parenthesis refer to the SAA4955HL. Pins V should be connected to the supply voltage of the driving circuit that generates the input voltages. DD(P) This could be, for instance, 5.5 V instead of 3.3 V. Pins V 2001 Jul ...
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... Philips Semiconductors 2.9-Mbit field memory PINNING PIN SYMBOL SAA4955HL SAA4955TJ GND 7 P GND 8 D11 9 D10 n. SWCK 22 RSTW DD( DD( DD( RSTR 32 SRCK 2001 Jul 09 I/O 1 ground ground for protection circuits 2 ground general purpose ground 3 digital input data input 11 4 digital input data input 10 ...
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... SAA4955HL Fig.2 Pin configuration of SAA4955HL. 5 Product specification SAA4955 DESCRIPTION 33 SRCK 32 RSTR DD( DD(P) ...
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... Philips Semiconductors 2.9-Mbit field memory handbook, halfpage GND P 1 GND 2 D11 3 D10 SAA4955TJ SWCK 16 RSTW DD(P) 20 MGK675 Fig.3 Pin configuration of SAA4955JT. 2001 Jul 09 FUNCTIONAL DESCRIPTION Write operation Write operations are controlled by the SWCK, RSTW, WE and IE signals. A write operation starts with a reset write ...
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... Philips Semiconductors 2.9-Mbit field memory period of 18 additional SWCK clock cycles is required before write access to the new block address is possible. During this time, data is transferred from the serial write and parallel write registers into the memory array and the write pointer is set to the new block address. ...
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... Philips Semiconductors 2.9-Mbit field memory R : RSTR ESET READ The first positive transition of SRCK after RSTR goes from LOW to HIGH resets the read address pointer to the lowest address ( 12 decimal; see Figs 11 and 12 LOW, however, the reset read operation to the lowest address will be delayed until the first positive transition of SRCK after RE goes HIGH ...
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... Philips Semiconductors 2.9-Mbit field memory Power-up and initialization Reliable operation is not guaranteed until at least 100 s after power-up, the time needed to stabilize V recommended operating range. After the 100 s power-up interval has elapsed, the following initialization sequence must be performed: a minimum of 12 dummy read ...
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... T ambient temperature amb V electrostatic handling voltage es Notes 1. Machine model: equivalent to discharging a 200 pF capacitor through Human body model: equivalent to discharging a 100 pF capacitor through a 1500 THERMAL CHARACTERISTICS SYMBOL R thermal resistance from junction to ambient th(j-a) SAA4955TJ SAA4955HL 2001 Jul 09 CONDITIONS DD( DD( DD( DD(O) ...
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... Philips Semiconductors 2.9-Mbit field memory CHARACTERISTICS 3 DD(O) DD(P) SYMBOL PARAMETER Supplies supply voltage DD DD(O) V supply voltage DD(P) I total supply current DD(tot DD(tot) DD DD(O) I operating supply current DD I stand-by supply current DDstd I supply current DD(O) I supply current DD(P) Inputs (pins D11 to D0, SWCK, RSTW, WE, IE, OE, RE, RSTR and SRCK) ...
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... Philips Semiconductors 2.9-Mbit field memory SYMBOL PARAMETER t transition time (rise and fall) t Read cycle timing; note 3 t access time after SRCK ACC t output enable time after SRCK en(Q) t output disable time after SRCK dis(Q) t output hold time after SRCK h(Q) T SRCK cycle time ...
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... Philips Semiconductors 2.9-Mbit field memory N 2 handbook, full pagewidth T cy(SWCK) SWCK t W(SWCKH) t W(SWCKL) RSTW D0 to D11 handbook, full pagewidth cy(SWCK) SWCK t W(SWCKH) t W(SWCKL) RSTW D0 to D11 Fig.5 Write cycle timing diagram (reset write with WE LOW). 2001 Jul h(RSTW) t su(RSTW) t h(RSTW Fig.4 Write cycle timing diagram (reset write). ...
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... Philips Semiconductors 2.9-Mbit field memory start handbook, full pagewidth sequence (4 SWCK SWCK RSTW WE LOW: D0 controlled MSB D1 to D11 Fig.6 D0 controlled entry sequence of random write block access mode. start handbook, full pagewidth sequence (4 SWCK SWCK RSTW WE HIGH: IE controlled WE IE MSB D0 to D11 Fig ...
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... Philips Semiconductors 2.9-Mbit field memory N 1 handbook, full pagewidth SWCK t su(WE D11 RSTW N 1 handbook, full pagewidth SWCK t su(IE D11 RSTW Fig.9 Write cycle timing diagram (input enable = write mask operation). 2001 Jul 09 N disable t h(WE) t W(WEL) t su(D) t h(D) N Fig.8 Write cycle timing diagram (write enable). ...
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... Philips Semiconductors 2.9-Mbit field memory N handbook, full pagewidth SWCK D11 N N RSTW SRCK OE RE new Q0 to Q11 N RSTR 2001 Jul new old high Fig.10 Write mask operation old new new Product specification SAA4955 new MGK683 ...
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... Philips Semiconductors 2.9-Mbit field memory N 1 handbook, full pagewidth T cy(SRCK) SRCK t W(SRCKH) t W(SRCKL) RSTR t ACC Q0 to Q11 handbook, full pagewidth T cy(SRCK) SRCK t W(SRCKH) t W(SRCKL) RSTR t ACC Q0 to Q11 Fig.12 Read cycle timing diagram (reset read with RE LOW). 2001 Jul h(RSTR) t su(RSTR) ...
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... Philips Semiconductors 2.9-Mbit field memory start handbook, full pagewidth sequence (4 SRCK SRCK RSTR RE MSB OE high Q11 Fig.13 Entry sequence of random read block access mode. N handbook, full pagewidth SRCK t su(RE Q11 RSTR 2001 Jul 09 serial input of read block address (13 SRCK) random read block address ...
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... Philips Semiconductors 2.9-Mbit field memory N handbook, full pagewidth SRCK t su(OE Q11 RSTR 2001 Jul 09 disable disable t h(OE) t W(OEL) t dis(Q) high-Z N Fig.15 Read cycle timing diagram (output enable). 19 Product specification SAA4955 h(OE) t su(OE) t ACC t en( MGK688 ...
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... Philips Semiconductors 2.9-Mbit field memory handbook, full pagewidth SWCK RSTW WE and D11 SRCK RSTR RE and OE high Q11 2001 Jul new new new minimum number of SWCK cycles delay to get new data Fig.16 New data access. 20 Product specification new new new 39 40 ...
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... Philips Semiconductors 2.9-Mbit field memory handbook, full pagewidth SWCK RSTW WE and D11 SRCK RSTR RE and OE high Q11 2001 Jul new new new maximum number of SWCK cycles delay to get old data Fig.17 Old data access. 21 Product specification new new new 19 20 ...
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... SWCK 15 (22) (SAA4955HL D11 data (21 to 18, inputs (24 (25) enable signal The pin numbers in parenthesis refer to the SAA4955HL. write new data handbook, full pagewidth read 2 times delayed old data SWCK and SRCK RSTW and RSTR WE and IE and RE and OE data inputs ( 12) data ...
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... Philips Semiconductors 2.9-Mbit field memory PACKAGE OUTLINES LQFP44: plastic low profile quad flat package; 44 leads; body 1 pin 1 index DIMENSIONS (mm are the original dimensions) A UNIT max. 0.15 1.45 1.60 mm 0.25 0.05 1.35 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. ...
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... Philips Semiconductors 2.9-Mbit field memory SOJ40: plastic small outline package; 40 leads (J-bent); body width 10. pin 1 index 1 e DIMENSIONS (millimetre dimensions are derived from the original inch dimensions UNIT max. 1.40 2.29 mm 3.68 0.25 1.14 2.18 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. ...
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... Philips Semiconductors 2.9-Mbit field memory SOLDERING Introduction to soldering surface mount packages This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our “Data Handbook IC26; Integrated Circuit Packages” (document order number 9398 652 90011). ...
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... Philips Semiconductors 2.9-Mbit field memory Suitability of surface mount IC packages for wave and reflow soldering methods PACKAGE BGA, HBGA, LFBGA, SQFP, TFBGA HBCC, HLQFP, HSQFP, HSOP, HTQFP, HTSSOP, HVQFN, SMS (3) PLCC , SO, SOJ LQFP, QFP, TQFP SSOP, TSSOP, VSO Notes 1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks may occur due to vaporization of the moisture in them (the so called popcorn effect) ...
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... Jul 09 (2) This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specifi ...
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... Tel. +46 8 5985 2000, Fax. +46 8 5985 2745 Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH, Tel. +41 1 488 2741 Fax. +41 1 488 3263 Taiwan: Philips Semiconductors, 5F, No. 96, Chien Kuo N. Rd., Sec. 1, TAIPEI, Taiwan Tel. +886 2 2134 2451, Fax. +886 2 2134 2874 Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd., 60/14 MOO 11, Bangna Trad Road KM ...