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AT89C2051-12PC Datasheet(PDF) 14 Page - ATMEL Corporation

Part No. AT89C2051-12PC
Description  8-bit Microcontroller with 2K Bytes Flash
Download  20 Pages
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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AT89C2051-12PC Datasheet(HTML) 14 Page - ATMEL Corporation

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14
0368G–MICRO–6/05
AT89C2051
21. Shift Register Mode Timing Waveforms
22. AC Testing Input/Output Waveforms
(1)
Note:
1. AC Inputs during testing are driven at V
CC - 0.5V for a logic 1 and 0.45V for a logic 0. Timing measurements are made at VIH
min. for a logic 1 and VIL max. for a logic 0.
23. Float Waveforms
(1)
Note:
1. For timing purposes, a port pin is no longer floating when a 100 mV change from load voltage occurs. A port pin begins to
float when 100 mV change from the loaded VOH/VOL level occurs.


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