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W91312 Datasheet(PDF) 3 Page - Winbond |
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W91312 Datasheet(HTML) 3 Page - Winbond |
3 / 12 page W91310 SERIES Publication Release Date: January 1995 - 3 - Revision A3 Pin Description, continued SYMBOL PIN I/O FUNCTION DP 11 O N-channel open drain dialing pulse output (Figure 1). Flash key will cause DP to go active in both pulse mode and tone mode. DTMF 12 O In pulse mode, remains in low state at all times. In tone mode, outputs a dual or single tone. Detailed timing diagram for tone mode is shown in Figure 2(a, b). OUTPUT FREQUENCY Specified Actual Error % R2 R3 R4 C1 C2 C3 697 770 852 941 1209 1336 1477 699 766 848 948 1216 1332 1472 +0.28 -0.52 -0.47 +0.74 +0.57 -0.30 -0.34 R1 VDD, VSS 14, 6 I Power input pins. B/M 5 I The break make ratio is 60:40 if B/M = 1 and is 66.6:33.3 if B/M = 0. This pin has no function in DTMF mode. |
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