PC85132/232-1 Просмотр технического описания (PDF) - NXP Semiconductors.
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PC85132/232-1 Datasheet PDF : 65 Pages
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PCA85132
LCD driver for low multiplex rates
Rev. 4 — 9 April 2015
Product data sheet
1. General description
The PCA85132 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 160 segments. It can easily
be cascaded for larger LCD applications. The PCA85132 is compatible with most
microcontrollers and communicates via the two-line bidirectional I2C-bus. Communication
overheads are minimized by a display RAM with auto-incremental addressing, by
hardware subaddressing, and by display memory switching (static and duplex drive
modes).
For a selection of NXP LCD segment drivers, see Table 30 on page 56.
2. Features and benefits
AEC-Q100 compliant for automotive applications
Single-chip LCD controller and driver for up to 640 elements
Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
160 segment drives:
Up to 80 7-segment numeric characters
Up to 40 14-segment alphanumeric characters
Any graphics of up to 640 elements
May be cascaded for large LCD applications (up to 5120 elements possible)
160 4-bit RAM for display data storage
Software programmable frame frequency in steps of 5 Hz in the range of 60 Hz to
90 Hz; factory calibrated
Wide LCD supply range: from 1.8 V for low threshold LCDs and up to 8.0 V for
guest-host LCDs and high threshold (automobile) twisted nematic LCDs
Internal LCD bias generation with voltage-follower buffers
Selectable display bias configuration: static, 1⁄2, or 1⁄3
Wide power supply range: from 1.8 V to 5.5 V
LCD and logic supplies may be separated
Low power consumption, typical: IDD = 4 A, IDD(LCD) = 30 A
400 kHz I2C-bus interface
Auto-incremental display data loading across device subaddress boundaries
Versatile blinking modes
Compatible with Chip-On-Glass (COG) technology
No external components required
1. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 19 on page 58.
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