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HD6432138SW Datasheet(PDF) 667 Page - Renesas Technology Corp |
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HD6432138SW Datasheet(HTML) 667 Page - Renesas Technology Corp |
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667 / 1061 page  Section 21 ROM (Mask ROM Version, H8S/2138 F-ZTAT, H8S/2134 F-ZTAT, and H8S/2132 F-ZTAT) Rev. 4.00 Jun 06, 2006 page 613 of 1004 REJ09B0301-0400 Table 21.14 AC Characteristics When Entering Another Mode from Memory Read Mode Conditions: V CC = 5.0 V ±10%, VSS = 0 V, Ta = 25°C ±5°C Item Symbol Min Max Unit Command write cycle t nxtc 20 — µs CE hold time t ceh 0 — ns CE setup time t ces 0 — ns Data hold time t dh 50 — ns Data setup time t ds 50 — ns Write pulse width t wep 70 — ns WE rise time t r — 30 ns WE fall time t f — 30 ns CE FA17 to FA0 FO7 to FO0 H'XX OE WE Other mode command write Memory read mode twep tceh tdh tds tnxtc tces Address stable Data tf tr Note: Do not enable WE and OE at the same time. Figure 21.17 Timing Waveforms When Entering Another Mode from Memory Read Mode |
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