AT80251G2D-3CSUM(2006) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT80251G2D-3CSUM
(Rev.:2006)

8/16-bit Microcontroller with Serial Communication Interfaces

Atmel Corporation 

AT/TSC8x251G2D

Figure 26. AC Testing Input/Output Waveforms

INPUTS

VDD - 0.5

0.2 VDD + 0.9

0.45 V

0.2 VDD - 0.1

OUTPUTS

VIH min

VIL max

Note:

For timing purposes, a 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 loading VOH/VOL level

occurs with IOL/IOH = ±20 mA.

Figure 27. Float Waveforms

VLOAD

VLOAD + 0.1 V

VLOAD - 0.1 V

Timing Reference Points

VOH - 0.1 V

VOL + 0.1 V

61

4135F–8051–11/06

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