UPD43256BCZ-85L 查看數據表（PDF） - NEC => Renesas Technology

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UPD43256BCZ-85L

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

NEC => Renesas Technology 

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

Output waveform

Test points

1.5 V

1.5 V

Test points

1.5 V

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

(For tAA, tACS, tOE, tOH)

+5 V

Figure 2

(For 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 capacitances of the probe and jig, and stray capacitances.

9

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