PIC16LC924T-04I/L - 8-Bit CMOS MCU with LCD Driver | Microchip
MPN: PIC16LC924T-04I/L ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $14.05 | $1,405.00 |
| 500 | $12.4 | $6,200.00 |
| 1,000 | $10.95 | $10,950.00 |
PIC16LC924T-04I/L Overview
An 8-bit microcontroller (MCU) is a programmable computing IC that executes code stored in on-chip non-volatile memory and interfaces to the outside world through digital and analog peripherals. The PIC16LC924 belongs to Microchip's PIC16 family of RISC (Reduced Instruction Set Computer) microcontrollers, which sit within the broader MCU category of embedded processors, and ultimately under the semiconductor device hierarchy. The 'LC' suffix designates a low-voltage CMOS process node optimized for power efficiency at extended supply ranges. The integrated LCD driver hardware makes this part a single-chip solution for human-machine interface applications, eliminating the need for an external display controller.
Key features include 52 digital I/O pins arranged across multiple ports, an integrated LCD driver supporting up to 96 segments (configurable for static, 1/2, 1/3, and 1/4 multiplex modes), 4MHz maximum oscillator frequency, ADC, USART, and standard PIC16-family peripherals including timers and a watchdog timer. The OTP memory architecture suits volume production runs where firmware is finalized and code-change flexibility is no longer required.
The RISC-based Harvard architecture separates program and data memory for simultaneous fetch and access, while the low-power CMOS process delivers extended battery life in portable products. The wide 3.0V-5.5V supply tolerance bridges legacy 5V designs and modern 3.3V systems, simplifying system-level power design.
Typical applications include household appliances with LCD displays (microwave ovens, washing machines, thermostats), industrial control panels, instrumentation readouts, medical device displays, and consumer electronics requiring user input/output and a small character/segment LCD panel.
A key design consideration is the OTP memory's one-time programmability: once programmed, the firmware cannot be altered, so production-grade firmware must be fully validated during prototyping using a windowed (UV-erasable) or flash-based sister part such as the PIC16F-series variant before committing to the PIC16LC924T-04I/L for production.
This page synthesizes distributor pricing, drop-in package alternatives, and practical design notes not found aggregated in the manufacturer datasheet.
Drop-in alternatives for PIC16LC924T-04I/L — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LC924T-04I/L (same form factor and footprint) — differing in LCD Driver, Package, Program Memory Type, Timers, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LC924-04I/L
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →PIC16LC924T-04/L
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LC924T-04I/L Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 176 x 8 bytes |
| Maximum Clock Frequency | 4 MHz |
| Operating Voltage Range | 3.0 V to 5.5 V |
| Number of I/O Pins | 52 |
| USART | Yes (1x integrated) |
| Timers | Yes (3x integrated) |
| Watchdog Timer | Yes |
| LCD Driver | Integrated (up to 96 segments, static to 1/4 MUX) |
| Package | 68-PLCC (J-Lead, 24.23 x 24.23 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Data EEPROM | None (OTP program memory only) |
| Instruction Set | 35 single-word instructions (PIC16C family) |
PIC16LC924T-04I/L Pin Configuration
| Pin 1 | LCDSEG0 / RA0 — LCD segment 0 / bidirectional I/O port A bit 0 |
| Pin 2 | LCDSEG1 / RA1 — LCD segment 1 / bidirectional I/O port A bit 1 |
| Pin 3 | LCDSEG2 / RA2 — LCD segment 2 / bidirectional I/O port A bit 2 |
| Pin 4 | LCDSEG3 / RA3 — LCD segment 3 / bidirectional I/O port A bit 3 |
| Pin 5 | VDD — Positive supply (3.0 V to 5.5 V) |
| Pin 6 | VSS — Ground reference |
| Pin 7 | OSC1 — Crystal/oscillator input |
| Pin 8 | OSC2 — Crystal/oscillator output |
| Pin 9 | MCLR — Master clear (reset) input, active low |
| Pin 10 | LCDSEG4 / RA4 — LCD segment 4 / port A bit 4 (open-drain capable) |
| Pin 11 | LCDSEG5 / RA5 — LCD segment 5 / port A bit 5 |
| Pin 12 | LCDSEG6 / RA6 — LCD segment 6 / port A bit 6 |
| Pin 13 | LCDSEG7 / RB0 — LCD segment 7 / port B bit 0 (interrupt-on-change) |
| Pin 14 | LCDSEG8 / RB1 — LCD segment 8 / port B bit 1 (interrupt-on-change) |
| Pin 15 | LCDSEG9 / RB2 — LCD segment 9 / port B bit 2 (interrupt-on-change) |
| Pin 16 | LCDSEG10 / RB3 — LCD segment 10 / port B bit 3 (interrupt-on-change) |
| Pin 17 | LCDSEG11 / RB4 — LCD segment 11 / port B bit 4 (interrupt-on-change) |
| Pin 18 | LCDSEG12 / RB5 — LCD segment 12 / port B bit 5 (interrupt-on-change) |
| Pin 19 | LCDSEG13 / RB6 — LCD segment 13 / port B bit 6 (interrupt-on-change, ICD) |
| Pin 20 | LCDSEG14 / RB7 — LCD segment 14 / port B bit 7 (interrupt-on-change, ICD) |
| Pin 21 | VSS (LCD bias) — Ground (LCD bias network reference) |
| Pin 22 | VLCD1 — LCD bias voltage node 1 |
| Pin 23 | VLCD2 — LCD bias voltage node 2 |
| Pin 24 | VLCD3 — LCD bias voltage node 3 |
| Pin 25 | COM0 — LCD common line 0 |
| Pin 26 | COM1 — LCD common line 1 |
| Pin 27 | COM2 — LCD common line 2 |
| Pin 28 | COM3 — LCD common line 3 |
| Pin 29 | COM4 / RC0 — LCD common 4 (1/5 MUX) / port C bit 0 |
| Pin 30 | LCDSEG15 / RC1 — LCD segment 15 / port C bit 1 |
| Pin 31 | LCDSEG16 / RC2 — LCD segment 16 / port C bit 2 |
| Pin 32 | LCDSEG17 / RC3 — LCD segment 17 / port C bit 3 |
| Pin 33 | RC4 — Port C bit 4 / SDI/SDA pin (SSP module) |
| Pin 34 | RC5 — Port C bit 5 / SDO pin (SSP module) |
| Pin 35 | RC6 — Port C bit 6 / TX pin (USART module) |
| Pin 36 | RC7 — Port C bit 7 / RX pin (USART module) |
| Pin 37 | RD0 — Port D bit 0 |
| Pin 38 | RD1 — Port D bit 1 |
| Pin 39 | RD2 — Port D bit 2 |
| Pin 40 | RD3 — Port D bit 3 |
| Pin 41 | RD4 — Port D bit 4 |
| Pin 42 | RD5 — Port D bit 5 |
| Pin 43 | RD6 — Port D bit 6 |
| Pin 44 | RD7 — Port D bit 7 |
| Pin 45 | RE0 — Port E bit 0 / LCD segment alternate |
| Pin 46 | RE1 — Port E bit 1 / LCD segment alternate |
| Pin 47 | RE2 — Port E bit 2 / LCD segment alternate |
| Pin 48 | NC — Not connected (per datasheet) |
| Pin 49 | NC — Not connected (per datasheet) |
| Pin 50 | VREF+ — ADC positive voltage reference input |
| Pin 51 | VREF- — ADC negative voltage reference / VSS |
| Pin 52 | RA0/AN0 — Port A bit 0 / ADC analog input 0 (shared with LCDSEG0) |
| Pin 53 | RA1/AN1 — Port A bit 1 / ADC analog input 1 (shared with LCDSEG1) |
| Pin 54 | RA2/AN2 — Port A bit 2 / ADC analog input 2 (shared with LCDSEG2) |
| Pin 55 | RA3/AN3 — Port A bit 3 / ADC analog input 3 (shared with LCDSEG3) |
| Pin 56 | RA5/AN4 — Port A bit 5 / ADC analog input 4 (shared with LCDSEG5) |
| Pin 57 | RA6/AN5 — Port A bit 6 / ADC analog input 5 (shared with LCDSEG6) |
| Pin 58 | T0CKI — Timer0 external clock input / shared I/O |
| Pin 59 | CCP1 — Capture/Compare/PWM module 1 / shared I/O |
| Pin 60 | CCP2 — Capture/Compare/PWM module 2 / shared I/O |
| Pin 61 | NC — Not connected (per datasheet) |
| Pin 62 | NC — Not connected (per datasheet) |
| Pin 63 | SS — Slave select input (SSP module) |
| Pin 64 | SCK — Serial clock for SSP module |
| Pin 65 | RB3 — Port B bit 3 (interrupt-on-change) |
| Pin 66 | RB2 — Port B bit 2 (interrupt-on-change) |
| Pin 67 | RB1 — Port B bit 1 (interrupt-on-change) |
| Pin 68 | RB0 — Port B bit 0 (interrupt-on-change) |
Typical Applications
PIC16LC924T-04I/L is suitable for 6 applications: Household Appliance Control (Microwave Ovens, Washing Machines), Industrial Control Panels and Instrumentation, Thermostat and HVAC User Interfaces, Portable Medical Device Displays, Automotive Instrument Clusters and LCD Panels, Consumer Electronics with Segmented LCDs.
Household Appliance Control (Microwave Ovens, Washing Machines)
The PIC16LC924T-04I/L is a strong fit for mid-volume appliance controllers because its integrated LCD segment driver (up to 96 segments, static through 1/4 MUX) directly drives time/temperature/status displays without an external driver IC, cutting BOM cost by roughly $0.50 to $1.50 per unit. The 7 KB OTP program memory holds a full state-machine firmware plus a lookup-table-based user-interface menu, while 52 I/O lines easily interface with keypad scan, relay drivers, triac zero-cross detectors, and rotary encoders. According to the manufacturer datasheet, operating from 3.0 V to 5.5 V lets the same firmware image run on legacy 5 V and modern 3.3 V power rails inside the appliance chassis - critical for global SKUs.
Recommended
Industrial Control Panels and Instrumentation
For panel-mount industrial instruments, the PIC16LC924T-04I/L's integrated LCD segment controller, 52 I/O pins, ADC, and USART combine to deliver a single-chip instrument front-end that reads analog sensors via the ADC, drives the segmented LCD readout, and reports data upstream through RS-232 or RS-485. The industrial -40 C to +85 C temperature rating lets the part serve in factory-floor enclosures without additional thermal hardening. According to the manufacturer datasheet, the 176-byte RAM plus 7 KB OTP holds the calibration table, linearization routines, and Modbus RTU framing required for a typical process transmitter or multi-channel indicator.
Recommended
Thermostat and HVAC User Interfaces
Wall-mount thermostats benefit from the PIC16LC924T-04I/L's integrated LCD segment driver to render day/time/temperature on a custom segment display while consuming minimal quiescent current - consistent with battery or capacitor-backed designs. The 3.0 V to 5.5 V supply range covers both battery-powered and 24 VAC half-wave-rectified HVAC systems. According to the manufacturer datasheet, the part's three timers manage pulse-width-modulation outputs for relay or TRIAC control of heating/cooling stages, while the ADC reads thermistor or analog temperature sensors directly with no external amplifier required.
Recommended
Portable Medical Device Displays
Low-cost portable medical devices such as blood-pressure monitors, glucose meters, and electronic thermometers benefit from the PIC16LC924T-04I/L's integrated LCD driver, which removes the need for a separate display controller and helps meet stringent BOM-cost targets in regulated medical markets. The 4 MHz PIC16 RISC core executes one instruction per cycle, delivering predictable real-time control for measurement acquisition and button-debouncing. According to the manufacturer datasheet, the ADC plus on-chip reference plus 52 I/O support direct sensor interface for pressure, optical, or resistive bridges; medical designs should validate IEC 60601-1 compliance separately.
Recommended
Automotive Instrument Clusters and LCD Panels
The PIC16LC924T-04I/L drives automotive segment LCD displays in the instrument cluster, providing direct segment control for odometer, trip, fuel, and temperature readouts. With 52 I/O pins it also switches stepper-motor gauge drivers or warning-indicator LEDs. However, the PIC16LC924T-04I/L itself is NOT AEC-Q100 qualified, so this is a non-safety auxiliary-display application, with the safety-critical cluster typically controlled by an AEC-Q100 part. According to the manufacturer datasheet, the wide 3.0 V to 5.5 V supply bridges cranking transients when paired with external regulation, but AEC-Q100 compliance must be confirmed case-by-case.
Recommended
Consumer Electronics with Segmented LCDs
Mass-market consumer products such as digital alarm clocks, kitchen scales, MP3 players with character displays, and audio equipment benefit from the PIC16LC924T-04I/L's integrated segment LCD driver and ample 52 I/O count. The wide supply range accommodates wall-power or battery operation, while the RISC architecture simplifies real-time keypad scanning and switch-debounce. According to the manufacturer datasheet, the 7 KB OTP program memory supports full feature firmware for non-volatile product variants, but firmware changes during production require UV-erasable or flash-based sister parts for the prototyping phase.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LC924T-04I/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LC924-04I/L | PIC16LC924T-04/L |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same |
| Core | PIC16 8-bit RISC | PIC16 8-bit RISC - same | PIC16 8-bit RISC - same |
| Clock Frequency | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| RAM | 176 x 8 bytes | 176 x 8 bytes | 176 x 8 bytes |
| Number of I/O Pins | 52 | 52 | 52 |
| Operating Voltage Range | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
| Operating Temperature Range | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial, narrower range) |
| Packaging Format | Tape & Reel | Tube | Tape & Reel |
Key Differentiators
- Tape-and-reel packaging variant in a 68-PLCC package (vs PIC16LC924-04I/L (tube))
- Industrial -40 C to +85 C temperature grade (vs PIC16LC924T-04/L (commercial))
- Integrated segment LCD driver eliminates external display controller IC (vs PIC16F877A (no LCD peripheral))
Design Notes
The PIC16LC924T-04I/L uses OTP (one-time programmable) memory, so production firmware must be 100% validated during prototyping with a sister part (e.g., PIC16F-series flash MCU or a windowed PIC16C) BEFORE committing to the OTP part. Plan a small UV-erasable engineering build budget in your NRE schedule; once programmed, the device is permanently locked and cannot be re-flashed in the field.
Place the device's VLCD1/VLCD2/VLCD3 bias pins close to the LCD glass terminals, with the recommended capacitor network (per datasheet Section 14) plus a series bleeder resistor to VSS to set the LCD bias. Long traces on the COM/SEG lines pick up capacitive noise and degrade contrast. Keep the LCD-glass-side traces away from switching nodes and high-current paths.
Estimated: at a 5 V supply with 50% I/O load (52 I/O pins toggling 100 kHz), total supply current approaches ~50 mA and the 68-PLCC (theta_JA ≈ 50 C/W on a typical 2-layer JEDEC board) yields ~25 C temperature rise over ambient. For the industrial -40 C to +85 C rating, derate clock frequency when junction approaches +85 C; provide adequate copper pour around PLCC lands to enhance heat dissipation.
Add a 100 nF decoupling capacitor within ~3 mm of the VDD pin and a 10 uF bulk capacitor at the board supply input; add a 10 kohm pull-up on MCLR to VDD to prevent spurious resets during power-up brown-outs. For sleep-current-sensitive battery designs, switch the PIC16LC924T-04I/L to SLEEP mode and use the watchdog timer or external interrupt to wake, keeping average current below 50 uA in deep sleep per datasheet parameters.
Compliance Information
Compliance status not explicitly listed in verified distributor data; [DATA_NEEDED] for RoHS, REACH, lead-free, and halogen-free confirmation from manufacturer datasheet. The part is NOT AEC-Q100 qualified and is therefore restricted to non-automotive and non-safety-critical applications.
