SMJ27C256 データシートの表示（PDF） - Austin Semiconductor

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SMJ27C256

256K UVEPROM UV Erasable Programmable Read-Only Memory

Austin Semiconductor 

Austin Semiconductor, Inc.

UVEPROM

SMJ27C256

RECOMMENDED TIMING REQUIREMENTS FOR PROGRAMMING: VCC = 6.5 and VPP = 13

(SNAP! Pulse), TA = 25°C (See Figure 2)

MIN

TYP

MAX UNIT

th(A) Hold Time, Address

0

µs

th(D) Hold Time, Data

2

µs

tw(E)PR Pulse Duration, Initial Program

95

100

105

µs

tsu(A) Setup Time, Address

2

µs

tsu(G) Setup Time, G\

2

µs

tsu(E) Setup Time, E\

2

µs

tsu(D) Setup Time, Data

2

µs

tsu(VPP) Setup Time, VPP

2

µs

tsu(VCC) Setup Time, VCC

2

µs

PARAMETER MEASUREMENT INFORMATION

2.08V

Output Under Test

CL = 100 pF1

RL = 800Ω

NOTES:

1. CL includes probe and fixture capacitance.

The AC testing inputs are driven at 2.4V for logic high and 0.4V for logic low. Timing measurements are

made at 2V for logic high and 0.8V for logic low for both inputs and outputs.

FIGURE 2. LOAD CIRCUIT AND VOLTAGE WAVEFORMS

SMJ27C256

Rev. 1.0 9/01

Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.

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