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37LV65-TIP Datasheet(PDF) 8 Page - Microchip Technology |
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37LV65-TIP Datasheet(HTML) 8 Page - Microchip Technology |
8 / 12 page 37LV36/65/128 DS21109E-page 8 © 1996 Microchip Technology Inc. FIGURE 11-3: ENTER AND EXIT PROGRAMMING MODES FIGURE 11-4: PROGRAMMING CYCLE OVERVIEW (NO VERIFY UNTIL ENTIRE ARRAY IS PROGRAMMED) FIGURE 11-5: DETAILS OF PROGRAM CYCLE VCC VPP VPP2 VPP1 VCCP TRPP TFPP TSVC THVC TSVC TSVCE TSVOE CLK DATA CE RESET/OE 1 ms VSS VSS VSS VSS VSS VPP VCC CE RESET/OE CLK VPP2 VCCP Enter Mode Exit Mode ** 32 Clocks *Note: The CEO pin is high impedance when VPP = VPP1 High if RESET/OE configured Low if RESET/OE configured 2 CLKS **Load Word 1 **Load Word 2 **Load Word 3 **Load Word 4 **Load Word 5 CE low to clear data latches Clock Increments Address Counter Enter Programming Mode 500 µs Programming Mode 500 µs Programming Mode 500 µs Programming Mode 500 µs Programming Mode VPP = VPP2 VCC = VCCP VPP1 VCC VPP CLK CE RESET/OE CEO * * ** * VPP CLK CE RESET/OE DATA Load PROM Internal Data Latches 12 32 (Last Bit) TRPP TFPP TPGM THOV THDP TSCC TLCE Clear PROM Internal Data Latches Program Pulse Increment Word Counter TSDP THIC TSIC *Note: The programmer must float the data pin while CE is low to avoid bus contention * |
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