Purdy AND671WGST-LED Manual do Utilizador descarregar pdf (Página 5)

Displays

Purdy Electronics Corporation

• 720 Palomar Avenue • Sunnyvale, CA 94085

Tel: 408-523-8200 • Fax: 408-733-1287 • [email protected] •

www.purdyelectronics.com

6/20/11

Timing Characteristics

(Ta = 25 ºC, VCC = 2.7V)

Symbol

Characteristics

Test Condition

Speciﬁ cations

Units

Min.

Typ.

Max.

Internal Clock Operation

OSC

OSC Frequency

R = 75K

190

270

350

KHz

External Clock Operation

External Frequency

–

125

270

410

KHz

Duty Cycle

–

, T

Rise/Fall Time

–

0.2

Write Mode (Writing data from MPU to ST7066U)

Enable Cycle Time

Pin E

1200

–

Enable Plus Time

Pin E

460

–

, T

Enable Rise/Fall Time

Pin E

–

Address Setup Time

Pins RS, RW, E

–

Address Hold Time

Pins RS, RW, E

–

DSW

Data Setup Time

Pins: DB0 - DB7

–

Data Hold Time

Pins: DB0 - DB7

–

Read Mode (Reading Data from ST7066U to MPU)

Enable Cycle Time

Pin E

1200

–

Enable Pulse Width

Pin E

480

–

, T

Enable Rise/Fall Time

Pin E

–

Address Setup Time

Pins: RS, RW, E

–

Address Hold Time

Pins: RS, RW, E

–

DOR

Data Setup Time

Pins: DB0 - DB&

–

320

Data Hold Time

Pins: DB0 - DB7

–

1 2 3 4 5 6

Displays 1

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