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W91610 Datasheet(PDF) 2 Page - Winbond |
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W91610 Datasheet(HTML) 2 Page - Winbond |
2 / 12 page W91610 SERIES - 2 - PIN CONFIGURATION 1 18 R4 C1 C2 C3 C4 V 2 3 4 5 6 13 14 15 16 17 R1 R2 R3 MODE V 7 8 9 10 11 12 DTMF DP/C5 HKS XT XT T/P MUTE P MUTE DD SS PIN DESCRIPTION SYMBOL PIN NO. I/O FUNCTION Column- Row Inputs 1 −4 & 15 −18 I Keyboard inputs are designed for use with either a standard 4 × 5 keyboard or an inexpensive single contact (Form A) keyboard. Electronic input from a µC can also be used. Valid key entry is defined by a connection between a single row and a single column. XT, XT 7, 8 I, O A built-in inverter provides oscillation with an inexpensive 3.579545 MHz crystal or ceramic resonator. T/P MUTE 9 O The T/P MUTE is a conventional CMOS inverter output. It is low during pulse and tone mode dialing sequence and flash break; otherwise, it remains high. MODE 13 I Pulling the mode pin to VSS place the dialer in tone mode. Pull to VDD or leave floating: Pulse mode (10 ppS, M/B = 2:3 or 1:2) |
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