Figure 1
AC Waveforms for Toggle Bit During Embedded Algorithm Operations
CE
tOEH
WE
tOES
OE
Data
D0-D7
D6
D0-D7
Valid
D6=Toggle
D6=Toggle
Stop Toggle
tOE
Figure 2
AC Test Circuit
Current Source
IOL
Parameter
Typical
Units
V
Input Pulse Level
0 – 3.0
5
Input Rise and Fall
ns
Input and Output Timing Reference
Output Lead Capacitance
1.5
V
VZ ~ 1.5 V (Bipolar Supply)
To Device Under Test
50
pF
CL =
50 pF
IOH
Current Source
Notes:
1) VZ is programmable from -2V to +7V. 2) IOL and IOH programmable from 0 to 16 mA. 3) Tester Impedance
ZO = 75Ω. 4) VZ is typically the midpoint of VOH and VOL. 5) IOL and IOH are adjusted to simulate a typical
resistance load circuit. 6) ATE Tester includes jig capacitance.
9
Aeroflex Circuit Technology
SCD1667 REV A 4/28/97 Plainview NY (516) 694-6700
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
