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W91214A Datasheet(PDF) 3 Page - Winbond |
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W91214A Datasheet(HTML) 3 Page - Winbond |
3 / 11 page W91210 SERIES Publication Release Date: May 1995 - 3 - Revision A3 Pin Description, continued SYMBOL 16-PIN I/O FUNCTION HKS 9 I Hook switch input. HKS = 1: On-hook state. Chip in sleep mode, no operation. HKS = 0: Off-hook state. Chip enabled for normal operation. HKS pin is pulled to VDD by internal resistor. DP /C4 10 O N-channel open drain dialing pulse output (Figure 1). Flash key will cause DP to be active in either tone mode or pulse mode. DTMF 11 O In pulse mode, remains in low state. 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 Error % R2 R3 R4 C1 C2 C3 697 770 852 941 1209 1336 1477 Actual 699 766 848 948 1216 1332 1472 +0.28 -0.52 -0.47 +0.74 +0.57 -0.30 -0.34 R1 VDD, VSS 12, 5 I Power input pins. |
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Similar Description - W91214A |
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