Rainbow-electronics AT27C2048 Bedienungsanleitung PDF herunterladen (Seite 7)

AT27C2048

Notes: 1. V

must be applied simultaneously or before V

and removed simultaneously or after V

2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven

—see timing diagram.

3. Program Pulse width tolerance is 50 µsec ± 5%.

AC Programming Characteristics

= 25

5°C, V

= 6.5

0.25V, V

= 13.0

0.25V

Symbol Parameter Test Conditions

(1)

Limits

UnitsMin Max

Address Setup Time

Input Rise and Fall Times

(10% to 90%) 20 ns

Input Pulse Levels

0.45V to 2.4V

Input Timing Reference Level

0.8V to 2.0V

Output Timing Reference Level

0.8V to 2.0V

2 µs

OES

OE Setup Time 2 µs

Data Setup Time 2 µs

Address Hold Time 0 µs

Data Hold Time 2 µs

DFP

OE High to Output Float Delay

(2)

0 130 ns

VPS

Setup Time 2 µs

VCS

Setup Time 2 µs

PGM Program Pulse Width

(3)

47.5 52.5 µs

Data Valid from OE 150 ns

PRT

Pulse Rise Time During

Programming

50 ns

Atmel’s 27C2048 Intergrated Product Identification Code

Codes

Pins

Hex DataA0 O15-O8 O7 O6 O5 O4 O3 O2 O1 O0

Manufacturer 0 0 00011110 001E

Device Type 1 0 11110111 00F7

1 2 3 4 5 6 7 8 9 10 11 12

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