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PCF8531

Features: ` Single-chip LCD controller/driver` 34 row and 128 column outputs` Display data RAM 34 ´ 128 bits` 128 icons (last row is used for icons)` Fast mode I2C-bus interface (400 kbit/s)` Software selectable multiplex rates: 1 : 17, 1 : 26 and 1 : 34` Icon mode with Mux rate 1 : 2: Feat...

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SeekIC No. : 004456444 Detail

PCF8531: Features: ` Single-chip LCD controller/driver` 34 row and 128 column outputs` Display data RAM 34 ´ 128 bits` 128 icons (last row is used for icons)` Fast mode I2C-bus interface (400 kbit/s)` ...

PCF8531 Data Sheet

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Part Number:
PCF8531
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/25

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Product Details

Description



Features:

` Single-chip LCD controller/driver
` 34 row and 128 column outputs
` Display data RAM 34 ´ 128 bits
` 128 icons (last row is used for icons)
` Fast mode I2C-bus interface (400 kbit/s)
` Software selectable multiplex rates: 1 : 17, 1 : 26 and 1 : 34
` Icon mode with Mux rate 1 : 2:
       Featuring reduced current consumption while displaying icons only.
` On-chip:
       Generation of VLCD (external supply also possible)
       Selectable linear temperature compensation
       Oscillator requires no external components (external clock also possible)
       Generation of intermediate LCD bias voltages
       Power-on reset.
` No external components required
` Software selectable bias configuration
` Logic supply voltage range VDD1 to VSS1 1.8 to 5.5 V
` Supply voltage range for on-chip voltage generator VDD2 and VDD3 to VSS1 and VSS2 2.5 to 4.5 V
` Display supply voltage range VLCD to VSS:
       Normal mode 4 to 9 V
       Icon mode 3 to 9 V.
` Low power consumption, suitable for battery operated systems
` CMOS compatible inputs
` Manufactured in silicon gate CMOS process.


Application

· Telecommunication systems
· Automotive information systems
· Point-of-sale terminals
· Instrumentation.


Pinout

The PCF8531 is a low power CMOS LCD row/column driver, designed to drive dot matrix graphic displays at multiplex rates of 1 : 17, 1 : 26 and 1 : 34. Furthermore, it can drive up to 128 icons. All necessary functions for the display are provided in a single chip, including on-chip generation of VLCD and the LCD bias voltages, resulting in a minimum of external components and low power consumption. The PCF8531 is compatible with most microcontrollers and communicates via a two-line bidirectional bus (I2C-bus). All inputs are CMOS compatible.

Remark: The icon mode is used to save current. When only icons are displayed, a much lower operating voltage (VLCD) can be used and the switching frequency of the LCD outputs is reduced. In most applications it is possible to use VDD as VLCD.


Specifications

SYMBOL PARAMETER MIN. MAX. UNIT
VDD1
 logic supply voltage -0.5 +5.5 V
VDD2, VDD3 multiplier supply voltage -0.5 +4.5 V
IDD supply current -50 +50 mA
VLCD LCD supply voltage -0.5 +9.0 V
ILCD LCD supply current -50 +50 mA
ISS negative supply current -50 +50 mA
VI/VO input/output voltage (any input/output) -0.5 VDD + 0.5 V
II DC input current -10 +10 mA
IO DC output current -10 +10 mA
Ptot total power dissipation per package -
 300 mW
P/out power dissipation per output - 30 mW
Tstg storage temperature -65 +150
Tj junction temperature - 150



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