EM91440 データシートの表示（PDF） - ELAN Microelectronics

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EM91440

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR

ELAN Microelectronics 

EM91440 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

DTMF output frequency (fosc = 3.579545 MHz)

Keyboard scan pin

ROW1 (f1)

ROW2 (f2)

ROW3 (f3)

ROW4 (f4)

COL1 (f5)

COL2 (f6)

COL3 (f7)

CCITT standard (Hz)

697

770

852

941

1209

1336

1477

Actual output (Hz)

699.1

766.2

847.4

947.9

1215.8

1331.6

1471.8

Deviation (%)

0.30

0.49

-0.53

0.73

0.56

-0.32

-0.35

* This specification are subject to be changed without notice.

10.1.1997 13

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