Specifications

186
3706C–MICRO–2/11
AT89LP3240/6440
26.13 Test Conditions
26.13.1 AC Testing Input/Output Waveform
Figure 26-24. AC Testing Input/Output Waveform
(1)
Note: 1. AC Inputs during testing are driven at V
DD
- 0.5V for a logic “1” and 0.45V for a logic “0”. Timing
measurements are made at V
IH
min. for a logic “1” and V
IL
max. for a logic “0”.
26.13.2 Float Waveform
Figure 26-25. Float Waveform
(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 V
OH
/V
OL
level occurs.
26.13.3 I
CC
Test Condition: Active Mode
Figure 26-26. Connection Diagram for I
CC
Active Measurement. All Other Pins are
Disconnected
For active supply current measurements all ports are configured in quasi-bidirectional mode.
Timers 0, 1 and 2 are configured to be free running in their default timer modes. The CPU exe-
cutes a simple random number generator that accesses RAM, the SFR bus and exercises the
ALU and hardware multiplier.
XTAL2
RST
V
DD
V
DD
I
CC
XTAL1
GND
(NC)
CLOCK SIGNAL
V
DD