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PDF SC91710A Data sheet ( Hoja de datos )
| Número de pieza | SC91710A | |
| Descripción | TONE / PULSE SWITCHABLE DIALER WITH HANDFREE FUNCTION | |
| Fabricantes | Silan Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SC91710A (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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SC91710A/B
T/P SWITCHABLE DIALER WITH REDIAL HANDFREE FUNCTION
DESCRIPTION
The SC91710A/B are Tone/Pulse switchable dialer which are fabricated
in COMS technology with wide operating voltage for both tone and pulse
mode, and consumes very low memory retention current in ON-HOOK
state.
FEATURES
* Tone/Pulse switchable dialer
* One 32-digit last number redial memory
* Pulse-to-tone (P→T) is provided for PBX operation
* Flash key is available
* Minimum tone duration is 98ms or 83ms
* Minimum intertone pause is 98ms or 83ms
* Redial Pause time (0ms)
* Uses 3.579549MHz crystal or ceramic resonator
* Many options can be selected
Mode (10PPS; 20PPS; Tone)
M/B ratio (40:60;33:66)
Pause time (3.6s)
* Flash function (RESET)
(P→T) pause time (3.6s)
Flash time (600ms; 300ms; 100ms; or 80ms)
* Power on reset circuit is provided
* Handfree function is provided for speaker phone application
* Packaged in 16-DIP or 18-DIP
ORDERING INFORMATION
Device
Package
SC91710A DIP-16-300-2.54
SC91710AS SOP-16-225-1.27
SC91710B DIP-18-300-2.54
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.2 2007.03.07
Page 1 of 18
1 page  
SC91710A/B
PIN DESCRIPTION
Pin No.
Pin Name
SC91710A/AS SC91710B
Description
* Provides keyboard scanning.
4 4 C1 * HKS pin is LOW, the column group stays in “HIGH”state and
row group stays in “LOW”state.
* The keypad is compatible with the standard dual contact matrix
1
1
C2
keyboard (as figure1b), the inexpensive single contact keyboard
(as figure 1a), and electronic input (as figure 1c).
2
2
* When HKS is “LOW”, a valid key entry is defined by related Row
C3
& Column connection or by electronic input (as shown in figure
1c).
3 3 C4 * Activation of two or more keys will result in no response, except
for single key.
* To avoid keyboard-bouncing error, this chip provides built-in
14 16 R1 debounce circuit. (The debounce time = 20ms)
Row
Column
Row
15 17 R2
Column
Figure1a: Single contact form Figure1b: Dual contact form
keyboard configuration
keyboard configuration
16 18 R3
Row
VDD
VSS
13 15 R4
Column
VDD
VSS
Figure1c: Electronic signal input keyboard configuration
* Oscillator input & output pins.
5 5 OSCI * The 3.579545MHz oscillator is formed by a built-in inverter inside
of this chip and by connecting a 3.579545MHz crystal or a
ceramic resonator across the OSCI and OSCO pins. (built-in
6
6
OSCO
feedback resistor and capacitor)
* When HKS is “LOW”, a valid key-in may turn on this oscillator
and generates a 3.579545 MHz clock.
* Mute output pins.
* NMOS open drain output structure.
7 7 XMUTE * The output is in “LOW”state during dialing sequence (both Pulse
and Tone mode) otherwise this pin is “high-impedance”.
* Long (continue) Mute.
8 8 VSS * Negative power supply pin.
9 11 VDD * Positive power supply pin.
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.2 2007.03.07
Page 5 of 18
5 Page 
SC91710A/B
TIMING DIAGRAMS(continued)
HKS
KEY IN
XMUTE
PO
TONE
OSCO
F
tDB
tF
......High impedance
Flash key operating timming
HKS
KEY IN
XMUTE
PO
TONE
OSCO
3
tDB
2
RD
tITP tITP
tITP
tD
tITP
......High impedance
Tone Mode Redial Timming Diagram
HKS
KEY IN
XMUTE
PO
TONE
OSCO
3
tDB
tIDP
2 RD
tRP tIDP
tIDP
tIDP
......High impedance
Pulse Mode Redial Timming Diagram
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.2 2007.03.07
Page 11 of 18
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet SC91710A.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
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