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AT80C51RA2-RLSIV 数据表(PDF) 70 Page - ATMEL Corporation |
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AT80C51RA2-RLSIV 数据表(HTML) 70 Page - ATMEL Corporation |
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70 / 86 page  70 4188F–8051–01/08 AT/TS8xC51Rx2 11.5.9 EPROM Programming and Verification Characteristics TA = 21°C to 27°C; VSS = 0V; VCC = 5V ± 10% while programming. VCC = operating range while verifying 11.5.10 EPROM Programming and Verification Waveforms Figure 11-10. EPROM Programming and Verification Waveforms Symbol Parameter Min Max Units VPP Programming Supply Voltage 12.5 13 V IPP Programming Supply Current 75 mA 1/TCLCL Oscillator Frquency 4 6 MHz TAVGL Address Setup to PROG Low 48 TCLCL TGHAX Adress Hold after PROG 48 TCLCL TDVGL Data Setup to PROG Low 48 TCLCL TGHDX Data Hold after PROG 48 TCLCL TEHSH (Enable) High to VPP 48 TCLCL TSHGL VPP Setup to PROG Low 10 µs TGHSL VPP Hold after PROG 10 µs TGLGH PROG Width 90 110 µs TAVQV Address to Valid Data 48 TCLCL TELQV ENABLE Low to Data Valid 48 TCLCL TEHQZ Data Float after ENABLE 0 48 TCLCL TGHSL TEHSH ALE/PROG TAVGL TDVGL P0 P1.0-P1.7 P2.0-P2.5 P3.4-P3.5* EA/VPP CONTROL SIGNALS (ENABLE) ADDRESS DATA IN VCC VPP VCC TGHAX TGHDX TGLGH TSHGL ADDRESS DATA OUT TAVQV TELQV TEHQZ PROGRAMMING VERIFICATION * 8KB: up to P2.4, 16KB: up to P2.5, 32KB: up to P3.4, 64KB: up to P3.5 |
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