PHILIPS OM4085 Universal LCD Driver Manual for Low Multiplex Rates
Summary
Product specification datasheet (February 1997) for the Philips OM4085 Universal LCD driver IC, a single-chip LCD controller/driver for low multiplex rate displays. Features: 24 segment drives supporting up to twelve 8-segment numeric characters, six 15-segment alphanumeric characters, or any graphics of up to 96 elements, selectable backplane configurations (static, 2/3/4 backplane multiplexing), selectable display bias (static, 1/2, 1/3), internal LCD bias generation with voltage-follower buff
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查询OM4085供应商
INTEGRATED CIRCUITS
DATA SHEET
OM4085 Universal LCD driver for low multiplex rates
Product specification Feb
Supersedes data of 1996 Nov File under Integrated Circuits, IC12
Page Summary Contents For PHILIPS OM4085 Universal LCD Driver Manual for Low Multiplex Rates
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查询OM4085供应商 INTEGRATED CIRCUITS DATA SHEET OM4085 Universal LCD driver for low multiplex rates Product specification Feb Supersedes data of 1996 Nov File under Integrated Circuits, IC12
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates FEATURES Single-chip LCD controller/driver Selectable backplane drive configuration: static or 2, or ba...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates PINNING SYMBOL PIN DESCRIPTION SDA I2C-bus data input/output handbook, halfpage SCL I2C-bus clock input...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates FUNCTIONAL DESCRIPTION All of the display configurations given in Table 1 can be implemented in the typ...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Power-on reset LCD voltage selector At power-on the OM4085 resets to a defined starting The LCD voltage...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates LCD drive mode waveforms The static LCD drive mode is used when a single backplane is provided in the L...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Tframe handbook, full pagewidth VDD LCD segments BP0 (VDD + VLCD)/2 VLCD state 1 state 2 BP1 (VDD + VLC...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Tframe handbook, full pagewidth LCD segments VDD − Vop/3 VDD − 2Vop/3 VLCD state 1 state 2 VDD − Vop/3 ...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Tframe handbook, full pagewidth LCD segments VDD − Vop/3 VDD − 2Vop/3 VLCD state 1 state 2 VDD − Vop/3 ...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Tframe handbook, full pagewidth VDD LCD segments VDD − Vop/3 VDD − 2Vop/3 VLCD state 1 state 2 VDD − Vo...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Oscillator The lower clock frequency has the disadvantage of increasing the response time when large am...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates There is a one-to-one correspondence between the RAM The sequence commences with the initialization of ...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Output bank selector Blinker This selects one of the four bits per display RAM address The display blin...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates I2C-BUS DESCRIPTION Acknowledge The I2C-bus is for 2-way, 2-line communication between The number of da...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates SDA SDA SCL SCL START condition STOP condition MBA608 Fig.12 Definition of START and STOP conditions. M...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates OM4085 I2C-bus controller The I2C-bus protocol is shown in Fig.15. The sequence is initiated with a STA...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates handbook, full pagewidth acknowledge acknowledge by by A0, A1 and A2 all addressed selected /R OM4085s ...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Table 5 Definition of OM4085 commands COMMAND/OPCODE OPTIONS DESCRIPTION Mode set LP M1 M0 see Table de...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Table 7 LCD bias configuration Table 15 Blink mode selection LCD BIAS BIT BLINK MODE BIT 1⁄3bias Normal...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates handbook, full pagewidth VDD VLCD SCL 17 to 40 24 segment drives LCD PANEL OM4085 CLK (up to 1536 13 to...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates handbook, full pagewidth =frame frame (a) static drive mode. BP1 (1/2 bias) BP1 (1/3 bias) (b) 1 : 2 mu...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN. ...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates DC CHARACTERISTICS VSS V; VDD 2.0 to V; VLCD VDD 2.0 to VDD V; Tamb −40 to +85 °C; unless otherwise spe...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates AC CHARACTERISTICS VSS V; VDD 2.0 to V; VLCD VDD 2.0 to VDD V; Tamb −40 to +85 °C; unless otherwise spe...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates handbook, full pagewidth f CLK t CLKH t CLKL 0.7VDD 0.3VDD 0.7VDD 0.3VDD t PSYNC t SYNCL BP0 to BP3 (VD...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates MGG397 MGG398 handbook, halfpage handbook, halfpage VDD (V) VDD (V) a. Normal mode; VLCD V; b. Low powe...
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hi te xt is er in hi te to fo rc la nd sc ap pa ge to ro ta te co rr ec tly he br ow si ng th ro ug th pd f i th cr ob at ea de r. hi te xt is er in _w hi te to fo rc la nd sc ap pa ge to ro ta te co ...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates CHIP DIMENSIONS AND BONDING PAD LOCATIONS 2.5 mm(1) handbook, full pagewidth S9 BP2 S10 BP0 S11 VLCD S1...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates Table 16 Bonding pad locations (dimensions in mm) All x/y coordinates are referenced to centre of chip,...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates PACKAGE OUTLINE VSO40: plastic very small outline package; 40 leads SOT158-1 pin 1 index detail X 10 mm...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates SOLDERING Wave soldering Introduction Wave soldering techniques can be used for all VSO packages if the...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifica...
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Philips Semiconductors Product specification Universal LCD driver for low multiplex OM4085 rates NOTES
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Philips Semiconductors – a worldwide company Argentina: see South America Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB, Tel. +31 82785, Fax. +31 Australia: 34 Waterloo Road, NORTH RYDE, NSW...
Manual Details
| Brand | Philips |
|---|---|
| Pages | 36 |
| File Size | 234.61 KB |
| Published | June 15, 2026 |
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Frequently Asked Questions
What microprocessors or microcontrollers are compatible with the OM4085?
It is compatible with any 4-bit, 8-bit, or 16-bit microprocessor/microcontroller.
How does the OM4085 interface and communicate?
It communicates via a TTL/CMOS compatible I²C-bus interface.
What is the maximum capacity when cascading devices?
The device can be cascaded, supporting large LCD applications up to 1536 segments.
Does it require external components for operation?
No external components are required, even in multiple device applications.