EMC EM91421 Series Manual page 14

DTMF output frequency
Keyboard scan pin
ROW1 (f1)
ROW2 (f2)
ROW3 (f3)
ROW4 (f4)
COL1 (f5)
COL2 (f6)
COL3 (f7)
* This specification are subject to be changed without notice.
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
(fosc = 3.579545 MHz)
CCITT standard (Hz)
697
770
852
941
1209
1336
1477
AND DUAL-TONE MELODY GENERATOR
Actual output (Hz)
699.1
766.2
847.4
947.9
1215.8
1331.6
1471.8
EM91421 SERIES
Deviation (%)
0.30
0.49
-0.53
0.73
0.56
-0.32
-0.35
10.1.1997
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