T89C51RD2-3CSCM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'T89C51RD2-3CSCM' PDF : 104 Pages View PDF
Float Waveforms
T89C51RD2
AC inputs during testing are driven at VCC - 0.5 for a logic “1” and 0.45V for a logic “0”.
Timing measurement are made at VIH min for a logic “1” and VIL max for a logic “0”.
FLOAT
VOH - 0.1 V
VOL + 0.1 V
VLOAD
VLOAD + 0.1 V
VLOAD - 0.1 V
For timing purposes as port pin is no longer floating when a 100 mV change from load
voltage occurs and begins to float when a 100 mV change from the loaded VOH/VOL level
occurs. IOL/IOH ≥ ± 20mA.
93
4243G–8051–05/03
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