W91822N Ver la hoja de datos (PDF) - Winbond

Número de pieza

componentes Descripción

Fabricante

W91822N

13-MEMORY TONE/PULSE DIALER WITH HANDFREE, LOCK AND HOLD FUNCTIONS

Winbond 

W91820N SERIES

Timing Waveforms, continued

HKS

HFI

H KEY

HFO

T/P MUTE

H/P MUTE

CHIP ENABLE

OFF HOOK

HIGH

Figure 3(b)

Note: The H KEY and HFI inputs will toggle the HFO signal. The first time HFI or H KEY are activated, the HFO signal will go

high and the previous active input will be neglected.

HKS

HFI

H KEY

HFO

T/P MUTE

H/P MUTE

CHIP ENABLE

ON HOOK

HIGH

Figure 3(c)

Note: The HKS signal change of state from high to low will initialize both the HFO and H/P MUTE signals.

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Publication Release Date: May 1999

Revision A2

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