UPD43256B_06 Datasheet, PDF (11/28 Pages) NEC – 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT

μPD43256B
AC Characteristics (Recommended Operating Conditions Unless Otherwise Noted)
AC Test Conditions
[ μPD43256B-70L, μPD43256B-85L, μPD43256B-70LL, μPD43256B-85LL ]
Input Waveform (Rise and Fall Time ≤ 5 ns)
2.2 V
0.8 V
1.5 V
Test points
1.5 V
Output Waveform
1.5 V
Test points
1.5 V
Output Load
AC characteristics should be measured with the following output load conditions.
Figure 1
Figure 2
(tAA, tACS, tOE, tOH)
+5 V
(tCHZ, tCLZ, tOHZ, tOLZ, tWHZ, tOW)
+5 V
I/O (Output)
990 Ω
1.8 kΩ
100 pF
CL
I/O (Output)
990 Ω
1.8 kΩ
5 pF
CL
Remark CL includes capacitance of the probe and jig, and stray capacitance.
[ μPD43256B-A85, μPD43256B-A10, μPD43256B-A12, μPD43256B-B10, μPD43256B-B12, μPD43256B-B15 ]
Input Waveform (Rise and Fall Time ≤ 5 ns)
2.2 V
0.5 V
1.5 V
Test points
1.5 V
Output Waveform
1.5 V
Test points
1.5 V
Output Load
AC characteristics should be measured with the following output load conditions.
tAA, tACS, tOE, tOH
1TTL + 100 pF
tCHZ, tCLZ, tOHZ, tOLZ, tWHZ, tOW
1TTL + 5 pF
Data Sheet M10770EJEV0DS
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