công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

ST3917 bảng dữ liệu(PDF) 2 Page - STMicroelectronics

tên linh kiện ST3917
Giải thích chi tiết về linh kiện  SPEECH - TONE/PULSE DIALER - LED INDICATOR
Download  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST3917 bảng dữ liệu(HTML) 2 Page - STMicroelectronics

  ST3917 Datasheet HTML 1Page - STMicroelectronics ST3917 Datasheet HTML 2Page - STMicroelectronics ST3917 Datasheet HTML 3Page - STMicroelectronics ST3917 Datasheet HTML 4Page - STMicroelectronics ST3917 Datasheet HTML 5Page - STMicroelectronics ST3917 Datasheet HTML 6Page - STMicroelectronics ST3917 Datasheet HTML 7Page - STMicroelectronics ST3917 Datasheet HTML 8Page - STMicroelectronics ST3917 Datasheet HTML 9Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 2 / 16 page
background image
PULSE
R1
R2
R3
R4
MU/MFI
MIC+
1
2
3
4
5
6
7
8
9
10
28
27
26
25
24
23
22
21
20
19
MIC-
GTX
C1
C2
C3
MODE/PT
OSC
SEL
HKS
RXOUT
GND
V
DD
GDTMF
11
12
13
14
18
17
16
15
GRX
RXIN
I
REF
V
CC
LN
ILINE
LED
REG
PIN CONNECTIONS
PIN DESCRIPTION
C1, C2, C3, R4, R3, R2, R1
(Keyboard inputs, Pins 1, 2, 3, 25, 26, 27, 28)
The device interfaces with either the standard 2 of
8 with negative common or the single contact
(Form A) keyboard. Column 4 of the keypad is
connecting to ground.
A valid keypad entry is either a single Row con-
nected to a single Column or GND simultaneously
presented to both a single Row and a single Col-
umn. In its quiescent or standby state, during nor-
mal off-hook operation, the Rows are initialized at
logic level 1 (VDD) and the columns are initialized
at logic level 0 (GND). Pulling any row input low
enables the on chip oscillator. Keyboard scanning
then begins.
123
456
789
*
0#
Flas h
Tone /P ulse
Paus e
LND
Figure 1 : Keyboard Configuration
Scanning consists of Rows and Columns alter-
nately switching high through on chip pullups. After
both a Row and Column keys have been detected,
the debounce counter is enabled and any noise
(bouncing contacts, etc) is ignored for a debounce
period (TKD) of 32ms. At this time, the keyboard is
sampled and if both the Row and Column informa-
tion are valid, the information is buffered into the
LND location.
In the tone mode, if two or more keys in the same
row or if two or more keys in the same column are
depressed a single tone will be output. The tone
will correspond to the common row or common
column for which the two keys were pushed. This
feature is for test purposes, and single tone will not
be redialed. Also in the tone mode, the output tone
is continuous in the manual dialing as long as the
key is pushed. The output tone duration follows the
Table 1. When redialing in the tone mode, each
DTMF output is 90ms duration, and the tone sepa-
ration (inter signal delay) is 90ms.
Table 1 : Output Tone Duration
Key Push Time, T
Tone Output
T < 32ms
32ms < T < 90ms + Tkd
T > 90 ms + Tkd
No output, ignored by the device
90ms duration
Output duration = T - tkd
ST3917A - ST3917B
2/16


Số phần tương tự - ST3917

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
List of Unclassifed Man...
ST39 ETC-ST39 Datasheet
155Kb / 1P
   DO-35 Case
logo
Vishay Siliconix
ST390-60T3MI VISHAY-ST390-60T3MI Datasheet
116Kb / 6P
   SuperTan® Wet Tantalum Capacitors With Hermetic Seal
12-May-2022
logo
Coilcraft lnc.
ST394RAT13N_LZ COILCRAFT-ST394RAT13N_LZ Datasheet
451Kb / 2P
   Air Core Inductors for Critical Applications
ST394RAT5N6_LZ COILCRAFT-ST394RAT5N6_LZ Datasheet
451Kb / 2P
   Air Core Inductors for Critical Applications
ST394RAT7N2_LZ COILCRAFT-ST394RAT7N2_LZ Datasheet
451Kb / 2P
   Air Core Inductors for Critical Applications
More results

Mô tả tương tự - ST3917

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
UMC Corporation
UM91210C UMC-UM91210C Datasheet
877Kb / 14P
   TONE/PULSE DIALER
logo
List of Unclassifed Man...
NT91214 ETC1-NT91214 Datasheet
212Kb / 23P
   Tone/Pulse Dialer
logo
UMC Corporation
UM91214 UMC-UM91214 Datasheet
817Kb / 13P
   Tone / Pulse Dialer
logo
ELAN Microelectronics C...
HM91710A EMC-HM91710A Datasheet
131Kb / 19P
   TONE/PULSE SWITCHABLE DIALER
EM91710 EMC-EM91710 Datasheet
159Kb / 19P
   TONE/PULSE SWITCHABLE DIALER
logo
Sharp Corporation
LR48061 SHARP-LR48061 Datasheet
598Kb / 10P
   Pulse/Tone Dialer LSI
logo
Holtek Semiconductor In...
HT9320 HOLTEK-HT9320_02 Datasheet
369Kb / 29P
   22-Memory Tone/Pulse Dialer
logo
Samsung semiconductor
KS58006 SAMSUNG-KS58006 Datasheet
101Kb / 8P
   TONE/PULSE DIALER WITH REDIAL
logo
Holtek Semiconductor In...
HT93214 HOLTEK-HT93214 Datasheet
194Kb / 16P
   1-memory Tone/Pulse Dialer
logo
UMC Corporation
UM91270 UMC-UM91270 Datasheet
711Kb / 11P
   20 MEMORY TONE/PULSE DIALER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com