CY7C443-30JC Cypress Semiconductor Corporation., CY7C443-30JC Datasheet
CY7C443-30JC
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CY7C443-30JC Summary of contents
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... The CY7C441 and CY7C443 are high-speed, low-power, first-in first-out (FIFO) memories with clocked read and write interfaces. Both FIFOs are 9 bits wide. The CY7C441 has a 512 word by 9 bit memory array, while the CY7C443 has a 2048 word by 9 bit memory array. These devices provide so- Logic Block Diagram ...
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... PLCC 32-Pin PLCC Static Discharge Voltage........................................... > 2001V (per MIL-STD-883, Method 3015) Latch-Up Current.................................................... > 200 mA Operating Range Range Temperature Commercial +70 C Industrial – +85 C Description CY7C441 CY7C443 7C441–20 7C441–30 7C443–20 7C443– ...
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... Mil/Ind 150 = Max., Com’ Mil/Ind 80 = Max., Com’ Mil/Ind 30 Test Conditions MHz 5.0V CC 3.0V R2 GND 333 3 ns C441-4 2V CY7C441 CY7C443 7C441–20 7C441–30 7C443–20 7C443–30 2.4 2.4 V 0.4 0.4 0 2 0.8 –0.5 0.8 –0.5 0.8 V +10 –10 +10 – ...
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... SKEW1 before the clock, the decision of whether or not to include the opposite clock in the current clock cycle SKEW2 CY7C441 CY7C443 7C441–20 7C441–30 7C443–20 7C443–30 Max ...
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... CKL ENABLED WRITE DISABLED WRITE HEN t t SEN HEN CKR t t CKH CKL ENABLED READ DISABLED READ NEW WORD t HEN t t SEN HEN CY7C441 CY7C443 C441 C441-7 Page [+] Feedback ...
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... OHMR SKEW1 before R4, R4 includes W1 in the flag update and therefore updates the FIFO to the Almost Empty SKEW2 CY7C441 CY7C443 t MRR t MRR t ...
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... SKEW2 ENABLED WRITE t FD [17, 18 ENABLED READ t SKEW2 ENABLED WRITE WRITE t FD CY7C441 CY7C443 ENABLED IGNORED READ READ C441 ENABLED ENABLED READ READ C441-11 before R4, R4 includes W3 SKEW2 Page ...
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... CKW is clock and CKR is opposite clock. 24. Count = 2032 indicates Almost Full for CY7C443 and count = 496 indicates Almost Full for CY7C441. Values for the CY7C441 count are shown in brackets. 25. The dashed lines show W3 as flag update write rather than an enabled write because ENW is deasserted. ...
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... F1 and F2 being LOW. All data outputs ( LOW at the rising edge of MR. In order for the FIFO 0–8 to reset to its default state, a falling edge must occur on MR and the user must not read or write while MR is LOW (unless CY7C441 CY7C443 2032 2033 [496] [497 ...
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... For example, if the CY7C443 FIFO contains 2031 words (2032 words or greater indicates Almost Full in the CY7C443), the next write (rising edge of CKW while ENW=LOW) causes the F1 and F2 pins to output the Almost Full state. Table 1. Flag Truth Table ...
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... The same principles apply for updating the flags when a tran- sition from the Almost Full to the Intermediate state occurs. If the CY7C443 just reaches the Almost Full state (2032 words) and then two words are read, a write clock (CKW) will be re- quired to update the flag to the Intermediate state. If ENW is LOW during the flag update cycle, the count and data update in addition to the flags ...
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... F2 in FIFO Intermediate Note: 28. Applies to both the CY7C441 and CY7C443 operations. Document #: 38-06032 Rev. *A [28 ] Next State Operation of FIFO F1 Write Empty 0 (ENW = LOW) Write Empty 0 (ENW = LOW) Read AE 1 (ENR = HIGH) Read AE 1 ...
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... Intermediate 1 1 494 Intermediate 1 1 495 Note: 29. The CY7C441 Almost Full state is represented by 496 or more words. 30. The CY7C443 Almost Full state is represented by 2032 or more words. Ordering Information 512x9 Clocked FIFO Speed Package (ns) Ordering Code Name 12 CY7C441–12JC J65 CY7C441–12JI ...
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... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. 32-Lead Plastic Leaded Chip Carrier J65 CY7C441 CY7C443 Page [+] Feedback ...
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... Document Title: CY7C441 / CY7C443 Clocked 512 FIFOs Document Number: 38-06032 Issue Orig. of REV. ECN NO. Date Change ** 110173 09/29/01 *A 122283 12/26/02 Document #: 38-06032 Rev. *A Description of Change SZV Change from Spec number: 38-00124 to 38-06032 RBI Power up requirements added to Maximum Ratings Information CY7C441 CY7C443 ...