
97
T89C5115
4128A–8051–04/02
Float Waveforms
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 V
OH
/V
OL
level
occurs. I
OL
/I
OH
≥±20 mA.
Flash Memory Table 74. Memory AC Timing
VDD = 5V ± 10% , TA = -40 to +85°C
Figure 45. Flash Memory - Internal Busy Waveforms
FLOAT
V
OH
-0.1V
V
OL
+0.1V
V
LOAD
V
LOAD
+0.1V
V
LOAD
-0.1V
Symbol Parameter Min Typ Max Unit
T
BHBL
Flash Internal Busy (Programming) Time 10 ms
FBUSY bit
T
BHBL
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