UPD43256BGU-A85 datasheet(9/24 Pages) NEC

Part #	UPD43256BGU-A85

Description	256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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9

µPD43256B

AC Characteristics (Recommended operating conditions unless otherwise noted)

AC Test Conditions

Input waveform (Rise/fall time

≤ 5 ns)

Input pulse levels

0.8 V to 2.2 V:

µPD43256B-L, 43256B-LL

0.5 V to 2.2 V:

µPD43256B-A, 43256B-B

1.5 V

Test points

Output waveform

1.5 V

Test points

Output load

µPD43256B-A, 43256B-B : 1TTL + 100 pF

µPD43256B-L, 43256B-LL:

AC characteristics with notes should be measured with the output load shown in

Figure 1 and Figure 2.

Figure 1

Figure 2

(For tAA, tACS, tOE, tOH)

(For tCHZ, tCLZ, tOHZ, tOLZ, tWHZ, tOW)

+5 V

I/O (Output)

1.8 k

Ω

100 pF

CL

990

Ω

+5 V

I/O (Output)

1.8 k

Ω

5 pF

CL

990

Ω

Remark

CL includes capacitances of the probe and jig, and stray capacitances.

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UPD43256BGU-A85 Datasheet(PDF) 9 Page - NEC

UPD43256BGU-A85 Datasheet(HTML) 9 Page - NEC

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