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EM91810A fiches techniques PDF

ELAN Microelectronics Corp - TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

Numéro de référence EM91810A
Description TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Fabricant ELAN Microelectronics Corp 
Logo ELAN Microelectronics Corp 





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EM91810A fiche technique
EME9M198118010AA//BB
TONE/PULTSOENSEW/PUITLECSHSAWBITLCEHDABIALELEDRIALWEIRTWHITLHCDLCIDNITNETRERFFAACCEE
GENERAL DESCRIPTION
The EM91810A/B are Tone/Pulse switchable dialer which are fabricated in CMOS technology with wide
operating voltage for both tone and pulse mode, and consumes very low memory retention current in ON-HOOK
state. EM91810A/B also provide SDO (serial data output) function to drive LCD driver (EM32100, EM32116,
EM32117) and voice synthesizer.
FEATURES
• Tone/pulse switchable dialer.
• One 32-digit last number redial memory.
• Pulse to tone (PT) is provided for PBX operation.
• Flash key is available.
• Minimum tone duration is 98ms or 83ms.
• Minimum intertone pause is 98ms or 83ms.
• Uses 3.579545 MHz crystal or ceramic resonator.
• Many options can be selected.
Mode (10 PPS ; 20 PPS ; Tone)
M/B ratio (40 : 60 ; 33 : 66)
Pause time (3.6s)
• Flash function (RESET)
PT pause time (3.6s)
Flash time (600ms; 300ms; 100ms; or 80ms).
• Mixed dialing.
• Handfree function is provided for speaker phone application.
• Power on reset circuit is provided.
• Package in DIP18 or DIP20.
• SDO function that is supported to drive LCD driver (EM32100) and voice synthesizer to indicate dialing
number.
• Key tone function is provided.
PIN ASSIGNMENTS
EM91810A
C2
C3
C4
C1
OSCI
OSCO
XMUTE
VSS
SDO
1
2
3
4
5
6
7
8
9
18 R3
17 R2
16 R1
15 R4
14 TONE
13 PO
12 HKS
11 VDD
10 KT
EM91810B
C2
C3
C4
C1
OSCI
OSCO
XMUTE
V SS
HFI
SDO
1
2
3
4
5
6
7
8
9
10
20 R3
19 R2
18 R1
17 R4
16 TONE
15 PO
14 HKS
13 VDD
12 HFO
11 KT
* This specification are subject to be changed without notice.
10.1.1997 1

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