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M66281FP

5120 × 8-Bit × 2 Line Memory

Renesas Electronics 

M66281FP

Switching Characteristics Measurement Circuit

VCC

RL = 1 kΩ

Qn

SW1

CL = 30 pF: tAC, tOH

Qn

RL = 1 kΩ

SW2

CL = 5 pF: tOEN, tODIS

Input pulse level:

0 to 3 V

Input pulse up/down time: 3 ns

Judging voltage Input: 1.3 V

Output: 1.3 V (However, tODIS (LZ) is judged with 10% of the output amplitude, while tODIS (HZ) is

judged with 90% of the output amplitude)

Load capacitance CL includes the floating capacity of connected lines and input capacitance of probe.

tODIS (LZ)

tODIS (HZ)

tOEN (ZL)

tOEN (ZH)

Item

SW1

Close

Open

Close

Open

tODIS and tOEN Measurement Condition

RCK

1.3 V

1.3 V

SW2

Open

Close

Open

Close

3V

GND

REB

Qn

Qn

tODIS (HZ)

90%

tODIS (LZ)

10%

tOEN (ZH)

1.3 V

tOEN (ZL)

1.3 V

3V

GND

VOH

VOL

REJ03F0254-0200 Rev.2.00 Sep 14, 2007

Page 6 of 15

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