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IDT70V9179L9PFI Datasheet(PDF) 3 Page - Integrated Device Technology |
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IDT70V9179L9PFI Datasheet(HTML) 3 Page - Integrated Device Technology |
3 / 15 page 6.42 IDT70V9179L High-Speed 3.3V 32K x 9 Dual-Port Synchronous Pipelined Static RAM Industrial and Commercial Temperature Ranges 3 Preliminary NOTES: 1. "H" = VIH, "L" = VIL, "X" = Don't Care. 2. ADS, CNTEN, CNTRST = X. 3. OE is an asynchronous input signal. Truth Table IRead/Write and Enable Control(1,2,3) Pin Names Left Port Right Port Names CE0L, CE1L CE0R, CE1R Chip Enables R/ WL R/ WR Read/Write Enable OEL OER Output Enable A0L - A14L A0R - A14R Address I/O0L - I/O8L I/O0R - I/O8R Data Input/Output CLKL CLKR Clock ADSL ADSR Address Strobe Enable CNTENL CNTENR Counter Enable CNTRSTL CNTRSTR Counter Reset FT/PIPEL FT/PIPER Flow-Through / Pipeline VDD Power (3.3V) VSS Ground (0V) 5645 tbl 01 OE CLK CE0 CE1 R/ W I/O0-8 MODE X ↑ H X X High-Z Deselected–Power Down X ↑ X L X High-Z Deselected–Power Down X ↑ LH L DATAIN Write L ↑ LH H DATAOUT Read H X L H X High-Z Outputs Disabled 5645 tbl 02 Truth Table IIAddress Counter Control(1,2,6) NOTES: 1. "H" = VIH, "L" = VIL, "X" = Don't Care. 2. CE0 and OE = VIL; CE1 and R/W = VIH. 3. Outputs configured in Flow-Through Output mode; if outputs are in Pipelined mode the data out will be delayed by one cycle. 4. ADS and CNTRST are independent of all other signals including CE0 and CE1. 5. The address counter advances if CNTEN = VIL on the rising edge of CLK, regardless of all other signals including CE0 and CE1. 6. While an external address is being loaded ( ADS = VIL), R/W = VIH is recommended to ensure data is not written arbitrarily. Address Previous Address Addr Used CLK(6) ADS CNTEN CNTRST I/O(3) MODE An X An ↑ L(4) XH DI/O (n) External Address Used XAn An + 1 ↑ H L(5) HDI/O(n+1) Counter Enabled—Internal Address generation X An + 1 An + 1 ↑ HH H DI/O(n+1) External Addre ss Blocked—Counter disabled (An + 1 reused) XX Ao ↑ XX L(4) DI/O(0) Counter Reset to Address 0 5645 tbl 03 |
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