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PIC17C44-08/P Datasheet(PDF) 161 Page - Microchip Technology |
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PIC17C44-08/P Datasheet(HTML) 161 Page - Microchip Technology |
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161 / 240 page  © 1996 Microchip Technology Inc. DS30412C-page 161 PIC17C4X Applicable Devices 42 R42 42A 43 R43 44 FIGURE 17-11: MEMORY INTERFACE WRITE TIMING TABLE 17-11: MEMORY INTERFACE WRITE REQUIREMENTS Parameter No. Sym Characteristic Min Typ† Max Units Conditions 150 TadV2alL AD<15:0> (address) valid to ALE ↓ (address setup time) 0.25Tcy - 30 — — ns 151 TalL2adI ALE ↓ to address out invalid (address hold time) 0— — ns 152 TadV2wrL Data out valid to WR ↓ (data setup time) 0.25Tcy - 40 — — ns 153 TwrH2adI WR ↑ to data out invalid (data hold time) — 0.25TCY § — ns 154 TwrL WR pulse width — 0.25TCY § — ns * These parameters are characterized but not tested. † Data in “Typ” column is at 5V, 25 °C unless otherwise stated. These parameters are for design guidance only and are not tested. § This specification is guaranteed by design. OSC1 ALE OE WR AD<15:0> Q1 Q2 Q3 Q4 Q1 Q2 150 151 152 153 154 addr out data out addr out |
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