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DM163006 Datasheet(PDF) 277 Page - Microchip Technology |
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DM163006 Datasheet(HTML) 277 Page - Microchip Technology |
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277 / 320 page ![]() 2001 Microchip Technology Inc. Advance Information DS39541A-page 277 PIC18C601/801 FIGURE 22-7: PROGRAM MEMORY READ TIMING DIAGRAM Operating Conditions: 2.0V <VCC <5.5V, -40°C <TA <125°C, unless otherwise stated. TABLE 22-6: CLKOUT AND I/O TIMING REQUIREMENTS Param No. Symbol Characteristics Min Typ Max Units 150 TadV2alL Address out valid to ALE ↓ (address setup time) 0.25TCY-10 —— ns 151 TalL2adl ALE ↓ to address out invalid (address hold time) 5 —— ns 155 TalL2oeL ALE ↓ to OE ↓ 10 0.125TCY — ns 160 TadZ2oeL AD high-Z to OE ↓ (bus release to OE)0 —— ns 161 ToeH2adD OE ↑ to AD driven 0.125TCY-5 —— ns 162 TadV2oeH LS data valid before OE ↑ (data setup time) 20 —— ns 163 ToeH2adl OE ↑ to data in invalid (data hold time) 0 —— ns 164 TalH2alL ALE pulse width — TCY — ns 165 ToeL2oeH OE pulse width 0.5TCY-5 0.5TCY — ns 166 TalH2alH ALE ↑ to ALE↑ (cycle time) — 0.25TCY — ns 167 Tacc Address valid to data valid 0.75TCY-25 —— ns 168 Toe OE ↓ to data valid — 0.5TCY-25 ns 169 TalL2oeH ALE ↓ to OE ↑ 0.625TCY-10 — 0.625TCY+10 ns 171 TalH2csL Chip select active to ALE ↓ 0.25TCY-20 —— ns 171A TubL2oeH AD valid to chip select active —— 10 ns Q1 Q2 Q3 Q4 Q1 Q2 OSC1 ALE OE Address Data from external 164 166 160 165 161 151 162 163 AD<15:0> 167 168 155 Address Address 150 A<19:16> Address 169 BA0 CS1 CS2 or CSIO 171 171A |
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