|
|
PDF PCF85176 Data sheet ( Hoja de datos )
| Número de pieza | PCF85176 | |
| Descripción | Universal LCD Driver For Low Multiplex Rates | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de PCF85176 (archivo pdf) en la parte inferior de esta página. Total 43 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
PCF85176
Universal LCD driver for low multiplex rates
Rev. 01 — 14 April 2010
Product data sheet
1. General description
The PCF85176 is a peripheral device which interfaces to almost any Liquid Crystal
Display (LCD)1 with low multiplex rates. It generates the drive signals for any static or
multiplexed LCD containing up to four backplanes and up to 40 segments. It can be easily
cascaded for larger LCD applications. The PCF85176 is compatible with most
microprocessors or microcontrollers and communicates via a two-line bidirectional
I2C-bus. Communication overheads are minimized by a display RAM with
auto-incremented addressing, by hardware subaddressing, and by display memory
switching (static and duplex drive modes).
2. Features and benefits
Single chip LCD controller and driver
Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
Selectable display bias configuration: static, 1⁄2, or 1⁄3
Internal LCD bias generation with voltage-follower buffers
40 segment drives:
Up to twenty 7-segment alphanumeric characters
Up to ten 14-segment alphanumeric characters
Any graphics of up to 160 elements
40 × 4-bit RAM for display data storage
Auto-incremented display data loading across device subaddress boundaries
Display memory bank switching in static and duplex drive modes
Versatile blinking modes
Independent supplies possible for LCD and logic voltages
Wide power supply range: from 1.8 V to 5.5 V
Wide logic LCD supply range:
From 2.5 V for low-threshold LCDs
Up to 6.5 V for guest-host LCDs and high-threshold twisted nematic LCDs
Low power consumption
400 kHz I2C-bus interface
May be cascaded for large LCD applications (up to 2560 elements possible)
No external components required
Manufactured in silicon gate CMOS process
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 16.
1 page  
NXP Semiconductors
www.DataSheet4U.com
PCF85176
Universal LCD driver for low multiplex rates
6.2 Pin description
Table 3. Pin description
Symbol Pin
TQFP64
(PCF85176H)
SDA
10
SCL 11
CLK 13
VDD
SYNC
14
12
OSC
15
A0 to A2 16 to 18
SA0 19
VSS 20
VLCD
21
BP0, BP2, 25 to 28
BP1, BP3
S0 to S39 29 to 32, 34 to 47,
49 to 64, 2 to 7
n.c. 1, 8, 9, 22 to 24,
33, 48
TSSOP56
(PCF85176T)
44
45
47
48
46
49
50 to 52
53
54
55
56, 1, 2, 3
4 to 43
-
Type
Description
input/output I2C-bus serial data line
input
I2C-bus serial clock
input/output clock line
supply
supply voltage
input/output cascade synchronization
input
internal oscillator enable
input
subaddress inputs
input
I2C-bus address input
supply
ground supply voltage
supply
LCD supply voltage
output
LCD backplane outputs
output
LCD segment outputs
- not connected; do not
connect and do not use as
feed through
PCF85176_1
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 01 — 14 April 2010
© NXP B.V. 2010. All rights reserved.
5 of 43
5 Page 
NXP Semiconductors
www.DataSheet4U.com
PCF85176
Universal LCD driver for low multiplex rates
BP0
BP1
Sn
Sn+1
state 1
state 2
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
0V
−VLCD/3
−2VLCD/3
−VLCD
VLCD
2VLCD/3
VLCD/3
0V
−VLCD/3
−2VLCD/3
−VLCD
Tfr
LCD segments
state 1
state 2
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
013aaa209
Fig 7.
Vstate1(t) = VSn(t) − VBP0(t).
Von(RMS) = 0.745VLCD.
Vstate2(t) = VSn(t) − VBP1(t).
Voff(RMS) = 0.333VLCD.
Waveforms for the 1:2 multiplex drive mode with 1⁄3 bias
PCF85176_1
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 01 — 14 April 2010
© NXP B.V. 2010. All rights reserved.
11 of 43
11 Page | ||
| Páginas | Total 43 Páginas | |
| PDF Descargar | [ Datasheet PCF85176.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| PCF85176 | Universal LCD Driver For Low Multiplex Rates | NXP Semiconductors |
| 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 |