|
|
PDF LC75893M Data sheet ( Hoja de datos )
| Número de pieza | LC75893M | |
| Descripción | 1/3 Duty LCD Display Driver with Key Input Function | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LC75893M (archivo pdf) en la parte inferior de esta página. Total 23 Páginas | ||
|
No Preview Available !
Ordering number : ENN5971A
CMOS IC
LC75893M
1/3 Duty LCD Display Driver with Key Input Function
Overview
The LC75893M is a 1/3 duty LCD display driver that can
directly drive up to 48 segments and can control up to four
general-purpose output ports. This product also
incorporates a key scan circuit that accepts input from up
to 20 keys to reduce printed circuit board wiring.
Features
• Key input function for up to 20 keys (A key scan is
performed only when a key is pressed.)
• 1/3 duty - 1/2 bias and 1/3 duty - 1/3 bias drive schemes
can be controlled from serial data (up to 48 segments).
• Sleep mode and all segments off functions that are
controlled from serial data
• Segment output port/general-purpose output port
function switching that is controlled from serial data
• Serial data I/O supports CCB format communication
with the system controller.
• Direct display of display data without the use of a
decoder provides high generality.
• Provision of an on-chip voltage-detection type reset
circuit prevents incorrect displays.
• RC oscillator circuit
Package Dimensions
unit: mm
3204-MFP36S
[LC75893M]
36 19
1 18 0.15
15.3
0.35 0.8 0.85
SANYO: MFP36S
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
N2999RM (OT) No. 5971-1/23
1 page  
Pin Assignment
LC75893M
Block Diagram
No. 5971-5/23
5 Page 
LC75893M
Key Scan Operation Functions
1. Key scan timing
The key scan period is 192 T (s). To reliably determine the on/off state of the keys, the LC75893M scans the keys
twice and determines that a key has been pressed when the key data agrees. It outputs a key data read request (a low
level on DO) 420 T (s) after starting a key scan. If the key data does not agree and a key was pressed at that point, it
scans the keys again. Thus the LC75893M cannot detect a key press shorter than 420 T (s).
Note: *3. In sleep mode the high/low state of these pins is determined by the S0 and S1 bits in the control data. Key scan output signals are not output
from pins that are set low.
2. In normal mode
• The pins KS1 to KS4 are set high.
• When a key is pressed a key scan is started and the keys are scanned until all keys are released. Multiple key
presses are recognized by determining whether multiple key data bits are set.
• If a key is pressed for longer than 420 T (s) (where T = 1 ) the LC75893M output a key data read
fOSC
request (a low level on DO) to the controller. The controller acknowledges this request and reads the key data.
However, if CE is high during a serial data transfer, DO will be set high.
• After the controller reads the key data, the key data read request is cleared (DO is set high) and the LC75893M
performs another key scan. Also note that DO, being an open-drain output, requires a pull-up resistor (between 1
and 10 kΩ).
No. 5971-11/23
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet LC75893M.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LC75893M | 1/3 Duty LCD Display Driver with Key Input Function | Sanyo Semicon Device |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |