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PDF LC717A10AJ Data sheet ( Hoja de datos )
| Número de pieza | LC717A10AJ | |
| Descripción | Capacitance-Digital-Converter LSI | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA2162
CMOS LSI
LC717A10AJ Capacitance-Digital-Converter LSI
for Electrostatic Capacitive Touch
Sensors
Overview
The LC717A10AJ is a high-performance and low-cost capacitance-digital-converter LSI for electrostatic capacitive
touch sensor, especially focused on usability.
It has 16 channels capacitance-sensor input. This makes it ideal for use in the products that need many switches.
Since the calibration function and the judgment of ON/OFF are automatically performed in LSI internal, it can make
development time more short. A detection result (ON/OFF) for each input can be read out by the serial interface (I2C
compatible bus or SPI).
Also, measurement value of each input can be read out as 8-bit digital data. Moreover, gain and other parameters can
be adjusted using serial interface.
Features
• Detection system: Differential capacitance detection (Mutual capacitance type)
• Input capacitance resolution: Can detect capacitance changes in the femto Farad order
• Measurement interval (16 differential inputs): 30ms (Typ) (at initial configuration),
6ms (Typ) (at minimum interval configuration)
• External components for measurement: Not required
• Interface: I2C * compatible bus or SPI selectable.
• Current consumption: 570μA (Typ) (VDD = 2.8V), 1.3mA (Typ) (VDD = 5.5V)
• Supply voltage: 2.6V to 5.5V
• Detection operations: Switch
• Packages: SSOP30
* I2C Bus is a trademark of Philips Corporation.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment. The products mentioned herein
shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life,
aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system,
safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives
in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any
guarantee thereof. If you should intend to use our products for new introduction or other application different
from current conditions on the usage of automotive device, communication device, office equipment, industrial
equipment etc. , please consult with us about usage condition (temperature, operation time etc.) prior to the
intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely
responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
Ver1.0.1
D1912HKPC 20121204-S00003 No.A2162-1/11
1 page  
LC717A10AJ
Power-on Reset (POR)
When power is turned on, power-on reset is enabled inside the LSI and its state is released after a certain power-on reset
time, tPOR. Power-on Reset operation condition; Power supply rise rate tVDD must be at least 1V/ms.
Since INTOUT pin changes from “High” to “Low” at the same time as the released of power-on reset, it is possible to
verify the timing of release of power-on reset externally.
During power-on reset, Cin, Cref and CrefAdd are unknown.
VDD
tVDD
tPOR
POR
(LSI internal signal)
RESET
RELEASE
VPOROP
tPOROP
tPOR
UNKNOWN RESET
RELEASE
INTOUT
VALID UNKNOWN
Cin,
Cref,
CrefAdd
UNKNOWN
VALID
UNKNOWN
I2C Compatible Bus Data Timing
fig.1
SDA
10%
90%
10%
SCL
tLOW
tHD;DTA tSU;DTA
90% 90%
90%
10% 10%
10%
tHIGH
10%
tHD;STA
tr tf
START
condition
tSU;STA
90%
90%
10%
tHD;STA
90%
repeated START
condition
fig.2
90%
10%
tSU;STO
tBUF
90%
10%
90%
STOP
condition
START
condition
I2C Compatible Bus Communication Formats
• Write format (data can be written into sequentially incremented addresses)
START
Slave Address
Write=L ACK
Slave
Register Address (N)
ACK Data written to Register Address (N) ACK Data written to Register Address (N+1) ACK STOP
Slave
fig.3
Slave
Slave
• Read format (data can be read from sequentially incremented addresses)
START
Slave Address
RESTART
Slave Address
Write=L ACK
Slave
Register Address (N)
ACK
Slave
Read=H ACK Data read from Register Address (N) ACK Data read from Register Address (N+1) ACK Data read from Register Address (N+2) NACK STOP
Slave
Master
fig.4
Master
Master
No.A2162-5/11
5 Page 
LC717A10AJ
●nCS
Interface selection / Chip-select-inverting input (SPI)
Selection of I2C compatible bus mode or SPI mode is through this terminal. After initialization, the LSI is
automatically in I2C compatible bus mode. To continually use I2C compatible bus mode, fix nCS pin to “High”. To
switch to SPI mode after LSI initialization, change the nCS input “High” → “Low”. The nCS pin is used as the chip-
select-inverting input pin of SPI, and SPI mode is kept until LSI is again initialized.
●nRST
It is the external-reset-signal-inverting-input pin. When nRST pin is “Low”, LSI is in reset state.
Each pin (Cin0 to 15, Cref, CrefAdd) is “Hi-Z” during reset state.
●SDA/SI
Data input and output (I2C) / Data input (SPI)
It is the data input and output pin of the I2C compatible bus or the data input pin of the SPI depending on the mode of
operation.
●SA0/SO
Slave address selection (I2C) / Data output (SPI)
It is the slave address selection pin of the I2C compatible bus or the data output pin of the SPI depending on the mode
of operation.
●SA1
Slave address selection (I2C)
It is the slave address selection pin of the I2C compatible bus.
When SPI mode, connect to the SA1 pin to GND.
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
Regarding monolithic semiconductors, if you should intend to use this IC continuously under high temperature,
high current, high voltage, or drastic temperature change, even if it is used within the range of absolute
maximum ratings or operating conditions, there is a possibility of decrease reliability. Please contact us for a
confirmation.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not
limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
design.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require the
export license from the authorities concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,
without the prior written consent of SANYO Semiconductor Co.,Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellectual property rights which has resulted from the use of the technical information and products mentioned
above.
This catalog provides information as of December, 2012. Specifications and information herein are subject
to change without notice.
PS No.A2162-11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LC717A10AJ.PDF ] | |
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