AY0438/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip AY0438 is a serial-input LCD driver capable of driving up to 4-digit, 32-segment static liquid crystal displays directly from a single serial data line. Packaged in a 40-pin PDIP for easy breadboard prototyping.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 40
- Lifecycle
- OBSOLETE
- Datasheet
- AY0438/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8600(MOQ 100)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Serial input interface drives up to 32 LCD segments from a single data line, minimizing MCU I/O pin consumption
- Static drive mode for 4-digit LCD panels eliminates multiplexing circuitry and reduces firmware complexity
- Wide supply voltage compatibility and 40-pin PDIP package simplify prototyping and legacy industrial display replacement
Applications
The AY0438/P is used in digital panel meters, industrial counters, and laboratory instruments that display 4-digit numeric readings on low-power static LCD panels. Its serial input requires only 3 MCU pins to refresh all 32 segments, making it popular in legacy instrument retrofits and low-volume production runs. Battery-operated measurement tools such as multimeters and thermometers also rely on its low-power static drive mode to maximize runtime.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-40 |
| YTEOL | 0 |
| Data Input Mode | SERIAL |
| Display Mode | SEGMENT |
| Interface IC Type | LIQUID CRYSTAL DISPLAY DRIVER |
| JESD-30 Code | R-PDIP-T40 |
| JESD-609 Code | e3 |
| Multiplexed Display Capability | NO |
| Number of Digits/Characters | 4-DIGIT |
| Number of Functions | 1 |
| Number of Segments | 32 |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP40,.6 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.06mA |
| Supply Voltage-Max | 8.5V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| fmax-Min | 1.5MHz |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many LCD segments can the AY0438 drive, and does it support multiplexed panels?
The AY0438 drives up to 32 static LCD segments covering a 4-digit display. It does not support multiplexed drive modes; all segments are driven simultaneously in static mode, which yields higher contrast and eliminates the flicker seen in 1/4-duty multiplexed panels.
How does serial input on the AY0438 reduce MCU GPIO requirements compared to parallel LCD drivers?
The AY0438 accepts display data over a 3-wire serial interface (data, clock, and latch), consuming only 3 MCU output pins to update all 32 segments, compared to 32 GPIO lines needed for a direct-drive parallel approach — saving 29 I/O pins on a typical 8-bit microcontroller.
In which industrial enclosure formats does the 40-pin PDIP package fit, and what board spacing is required?
The 40-pin PDIP package has a 2.54 mm (100 mil) pin pitch with a row spacing of 15.24 mm (600 mil), fitting standard 40-pin DIP sockets. This lets designers use socketed prototyping boards and facilitates field replacement without soldering rework equipment.
For a handheld meter design, how does the AY0438 static drive mode affect battery life versus a multiplexed LCD controller?
Static LCD drive keeps all segment voltages continuously applied, eliminating the 1/4-duty switching losses seen in multiplexed controllers. In a 3 V coin-cell-powered meter, static drive can reduce LCD controller supply current by 30–50 µA compared to multiplexed alternatives, extending battery life by weeks in low-update-rate instruments.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $4.1300 | $413.00 |
| 900+ | $4.0400 | $3636.00 |
| 1800+ | $3.8600 | $6948.00 |
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