PCF8534A

General description

The PCF8534A is a peripheral device which interfaces to almost any LCD¹ with low multiplex rates. It generates the drive signals for any static or multiplexed LCD containing up to four backplanes and up to 60 segments. In addition, the PCF8534A can be easily cascaded for larger LCD applications. The PCF8534A is compatible with most microprocessors or microcontrollers and communicates via a two-line bidirectional I²C-bus. Communication overheads are minimized using display RAM with auto-incremented addressing, hardware subaddressing and display memory switching (static and duplex drive modes).

The PCF8534AH only complies with the AEC-Q100 automotive qualification standard.

1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 19.

Features

• Single-chip LCD controller and driver
• Selectable backplane drive configurations: static or 2, 3 or 4 backplane multiplexing
• 60 segment outputs allowing to drive:
  • 30 7-segment numeric characters
  • 16 14-segment alphanumeric characters
  • Any graphics of up to 240 elements
• Cascading supported for larger applications
• 60 x 4-bit display data storage RAM
• Wide LCD supply range: from 2.5 V for low threshold LCDs up to 6.5 V for guest-host LCDs and high threshold (automobile) twisted nematic LCDs
• Internal LCD bias generation with voltage follower buffers
• Selectable display bias configurations: static, 1/2 or 1/3
• Wide logic power supply range: from 1.8 V to 5.5 V
• LCD and logic supplies may be separated
• Low power consumption
• 400 kHz I²C-bus interface
• Compatible with any microprocessors or microcontrollers
• No external components
• Display memory bank switching in static and duplex drive modes
• Auto-incremented display data loading
• Versatile blinking modes
• Silicon gate CMOS process

Products/packages

Type number	Orderable part number	Ordering code (12NC)	Product status	Package	Packing	Marking	ECCN
PCF8534AH/1	PCF8534AH/1,518	9352 848 29518	Volume production	SOT315-1 (LQFP80)	Reel Dry Pack, SMD, 13"	Standard Marking
PCF8534AHL/1	PCF8534AHL/1,518	9352 898 52518	Volume production	SOT315-1 (LQFP80)	Reel Dry Pack, SMD, 13"	Standard Marking
PCF8534AU/DA/1	PCF8534AU/DA/1,026	9352 876 64026	Volume production	Uncased die	Die In Waffle Carriers	No Marking

Quality/reliability/chemical content

Type number	Orderable part number	Chemical content	RoHS	Leadfree Conversion date	RHF	IRF (FIT)	MTBF (hours)	MSL
PCF8534AH/1	PCF8534AH/1,518	PCF8534AH_1		Always Pb-free
PCF8534AHL/1	PCF8534AHL/1,518	PCF8534AHL_1		Always Pb-free
PCF8534AU/DA/1	PCF8534AU/DA/1,026	PCF8534AU_DA_1		Always Pb-free

Quality and reliability disclaimer

Pricing/ordering/availability

Type number	Ordering code(12NC)	Orderable part number	Indicative price/unit($)	Region	Distributor	In stock	Order quantity	Inventory date	Buy online	Samples
PCF8534AH/1	9352 848 29518	PCF8534AH/1,518								not available
PCF8534AHL/1	9352 898 52518	PCF8534AHL/1,518								Order samples
PCF8534AU/DA/1	9352 876 64026	PCF8534AU/DA/1,026								not available

Block diagrams/pinning

Design support

Support Documents

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Disclaimers

• General product disclaimer
• Quality and reliability disclaimer