PIC16C924-08I/L - 8-Bit OTP MCU w/ LCD Driver | 8MHz | 68-PLCC
MPN: PIC16C924-08I/L ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.85 | $14.85 |
| 10 | $13.95 | $139.50 |
| 100 | $12.5 | $1,250.00 |
| 500 | $11.1 | $5,550.00 |
| 1,000 | $9.95 | $9,950.00 |
PIC16C924-08I/L Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and peripheral interfaces. The PIC16C924 family belongs to the PIC16C9xx mid-range lineup, which extends the standard PIC16 architecture with built-in LCD segment drivers targeting low-power human-machine interface (HMI) products such as metering, instrumentation, and appliance panels. This places the part in the broader taxonomy of microcontroller -> embedded controller -> semiconductor -> integrated circuit.
Key features include 4.5 V to 6.0 V supply range, 8 MHz maximum oscillator frequency, 52 I/O pins, 4 KB (7 KB on extended parts) of OTP/EPROM program memory, a 7-channel 8-bit ADC, and an LCD driver capable of multiplexing up to 128 segments. Peripherals include one 8-bit timer, one 16-bit timer, a Watchdog Timer with its own on-chip RC oscillator, and a synchronous serial port (SSP) supporting SPI and I2C. The device uses 13-bit instructions and Harvard architecture with separate program and data buses.
Typical applications include smart thermostats, utility meters, medical instrumentation, point-of-sale terminals, and consumer appliance front panels. The on-chip LCD driver removes the need for an external LCD controller, reducing BOM cost and PCB area in segments where 32 to 128 segments must be driven.
Designers should note that PIC16C924 is OTP/UV-erasable and is increasingly being replaced by flash-based PIC16F equivalents for new designs. Engineers should evaluate PIC16F946 or PIC16F917 when prototyping new LCD-based products, while keeping PIC16C924 for maintenance of installed bases and legacy firmware.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not aggregated on a single manufacturer datasheet.
Drop-in alternatives for PIC16C924-08I/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 PIC16C924-08I/L (same form factor and footprint) — differing in LCD Driver, Package, ADC, Operating Temperature, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C924-08/L
✅ Drop-In✓ In Stock
$10.45 / Unit
View Datasheet →PIC16C924-08I/CL
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C924T-08/L
✅ Drop-In✓ In Stock
$8.7 / Unit
View Datasheet →PIC16C924-04I/L
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →PIC16C923-08I/L
✅ Drop-In✓ In Stock
$2.75 / Unit
View Datasheet →PIC16C924-08I/L Maximum Ratings & Electrical Characteristics
| Architecture | 8-bit RISC Harvard (PIC16C9xx family) |
| Instruction Set | 35 single-word instructions, 14-bit opcode |
| Program Memory | 7 KB OTP/EPROM |
| Data RAM | 176 bytes |
| Data EEPROM | Not present (OTP only) |
| Maximum Clock Frequency | 8 MHz |
| Instruction Cycle | 500 ns at 8 MHz (branches are 2-cycle) |
| Supply Voltage (Vcc) | 4.5 V to 6.0 V |
| I/O Pins | 52 digital |
| Timers | 1 x 8-bit, 1 x 16-bit, plus WDT |
| ADC | 8-bit, 8 channels |
| LCD Driver | Integrated, up to 128 segments multiplexed |
| Serial Interfaces | Synchronous Serial Port (SPI / I2C) |
| Operating Temperature | -40C to +85C (Industrial, "-I" suffix) |
| Package | 68-pin PLCC (JEDEC LCC, code "L") |
| Mounting Type | Surface Mount (J-lead) |
PIC16C924-08I/L Pin Configuration
| Pin 1 | LCDSEG0 — LCD segment driver output 0 |
| Pin 2 | LCDSEG1 — LCD segment driver output 1 |
| Pin 3 | LCDSEG2 — LCD segment driver output 2 |
| Pin 4 | LCDSEG3 — LCD segment driver output 3 |
| Pin 5 | LCDSEG4 — LCD segment driver output 4 |
| Pin 6 | LCDSEG5 — LCD segment driver output 5 |
| Pin 7 | LCDSEG6 — LCD segment driver output 6 |
| Pin 8 | LCDSEG7 — LCD segment driver output 7 |
| Pin 9 | LCDSEG8 — LCD segment driver output 8 |
| Pin 10 | LCDSEG9 — LCD segment driver output 9 |
| Pin 11 | LCDSEG10 — LCD segment driver output 10 |
| Pin 12 | LCDSEG11 — LCD segment driver output 11 |
| Pin 13 | LCDSEG12 — LCD segment driver output 12 |
| Pin 14 | LCDSEG13 — LCD segment driver output 13 |
| Pin 15 | LCDSEG14 — LCD segment driver output 14 |
| Pin 16 | LCDSEG15 — LCD segment driver output 15 |
| Pin 17 | LCDSEG16 — LCD segment driver output 16 |
| Pin 18 | LCDSEG17 — LCD segment driver output 17 |
| Pin 19 | LCDSEG18 — LCD segment driver output 19 |
| Pin 20 | VSS — Ground reference for digital logic |
| Pin 21 | VDD — Positive supply (4.5V to 6.0V) |
| Pin 22 | OSC1 — Oscillator input / external clock pin |
| Pin 23 | OSC2 — Oscillator output (crystal mode) |
| Pin 24 | MCLR — Master clear reset input (active low) |
| Pin 25 | RA0/AN0 — Port A bit 0 / ADC input 0 |
| Pin 26 | RA1/AN1 — Port A bit 1 / ADC input 1 |
| Pin 27 | RA2/AN2 — Port A bit 2 / ADC input 2 |
| Pin 28 | RA3/AN3/VREF — Port A bit 3 / ADC input 3 / VREF+ |
| Pin 29 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pin 30 | RA5/AN4 — Port A bit 5 / ADC input 4 |
| Pin 31 | RA6 — Port A bit 6 |
| Pin 32 | RA7 — Port A bit 7 |
| Pin 33 | RB0/INT — Port B bit 0 / external interrupt |
| Pin 34 | RB1 — Port B bit 1 |
| Pin 35 | RB2 — Port B bit 2 |
| Pin 36 | RB3 — Port B bit 3 |
| Pin 37 | RB4 — Port B bit 4 |
| Pin 38 | RB5 — Port B bit 5 |
| Pin 39 | RB6 — Port B bit 6 |
| Pin 40 | RB7 — Port B bit 7 |
| Pin 41 | RC0 — Port C bit 0 |
| Pin 42 | RC1 — Port C bit 1 |
| Pin 43 | RC2 — Port C bit 2 |
| Pin 44 | RC3 — Port C bit 3 |
| Pin 45 | RC4 — Port C bit 4 |
| Pin 46 | RC5 — Port C bit 5 |
| Pin 47 | RC6 — Port C bit 6 |
| Pin 48 | RC7 — Port C bit 7 |
| Pin 49 | RD0 — Port D bit 0 |
| Pin 50 | RD1 — Port D bit 1 |
| Pin 51 | RD2 — Port D bit 2 |
| Pin 52 | RD3 — Port D bit 3 |
| Pin 53 | RD4 — Port D bit 4 |
| Pin 54 | RD5 — Port D bit 5 |
| Pin 55 | RD6 — Port D bit 6 |
| Pin 56 | RD7 — Port D bit 7 |
| Pin 57 | RE0 — Port E bit 0 |
| Pin 58 | RE1 — Port E bit 1 |
| Pin 59 | RE2 — Port E bit 2 |
| Pin 60 | LCDBIAS0 — LCD bias voltage output 0 |
| Pin 61 | LCDBIAS1 — LCD bias voltage output 1 |
| Pin 62 | LCDBIAS2 — LCD bias voltage output 2 |
| Pin 63 | VSS_LCD — Ground reference for LCD charge pump |
| Pin 64 | VDD_LCD — Supply for LCD charge pump |
| Pin 65 | SEG19 — LCD segment driver 19 |
| Pin 66 | SEG20 — LCD segment driver 20 |
| Pin 67 | SEG21 — LCD segment driver 21 |
| Pin 68 | SEG22 — LCD segment driver 22 |
Typical Applications
PIC16C924-08I/L is suitable for 6 applications: Smart Utility Meter Front Panel, Industrial Thermostat with LCD Display, Medical Infusion Pump User Interface, Point-of-Sale (POS) Terminal Keyboard, Consumer Appliance Front Panel (Washing Machine, Oven), Automotive Dashboard Cluster Display.
Smart Utility Meter Front Panel
The PIC16C924-08I/L fits smart utility meters because its on-chip LCD driver multiplexes up to 128 segments, removing the need for an external LCD controller and saving both BOM cost and PCB area. With 52 I/O pins the device can drive segment lines, read keypad inputs, and communicate over the synchronous serial port to an external metrology chip. The 5 V supply aligns with metering power budgets. Trade-off: NRND status means designers should plan migration to PIC16F946 for new programs while reusing the existing firmware for installed bases.
Recommended
Industrial Thermostat with LCD Display
Wall and industrial thermostats benefit from the PIC16C924-08I/L's integrated 8-channel 8-bit ADC for temperature sensing from multiple NTC or RTD sources, combined with its LCD driver for displaying setpoints and ambient readings. The 7 KB OTP program memory accommodates state-machine control logic, while 52 I/O pins support relay drivers, triac control outputs, and SPI/I2C expansion for real-time clocks. Trade-off: At -40C to +85C the part spans HVAC operating ranges, but new designs should evaluate PIC16F946 for nanoWatt sleep modes that reduce thermostat idle current.
Recommended
Medical Infusion Pump User Interface
The PIC16C924-08I/L's RISC core executes deterministic control loops needed for medical infusion pump front-panel interfaces, where the 7 KB OTP memory and 176-byte SRAM store alarms, dosing prompts, and pump-state graphics on the integrated LCD. The 8-bit ADC can read potentiometers for dosage entry, and the synchronous serial port links to the safety controller MCU. Note: Because the device is OTP and NRND, new medical designs should migrate to PIC16F946 for IEC 60730 software-class support and flash-based field updates.
Recommended
Point-of-Sale (POS) Terminal Keyboard
POS terminals use the PIC16C924-08I/L for the operator keyboard and 128-segment LCD because the 52 I/O pins can matrix-scan up to 80 keys while the LCD driver presents transaction data without an external controller. The 8 MHz instruction cycle is fast enough for key debounce and USB-host polling when paired with an external serial interface chip. Limitation: The OTP memory complicates firmware updates in the field, so PIC16F946 (flash) is preferred for new POS designs that require remote firmware management.
Recommended
Consumer Appliance Front Panel (Washing Machine, Oven)
White-goods appliance panels rely on the PIC16C924-08I/L to combine user-button decoding, segment-LCD status display, and motor or heater relay control in a single chip, eliminating an external LCD controller and reducing assembly cost. The 5 V supply rail and industrial temperature grade suit laundry and kitchen environments, and the 8 MHz clock handles sensor sampling for water-level or temperature monitoring. Trade-off: NRND status and lack of nanoWatt sleep means PIC16F946 or PIC16LF1947 should be selected for new energy-star appliance programs.
Recommended
Automotive Dashboard Cluster Display
Although the PIC16C924-08I/L is industrial-grade not automotive-grade (no AEC-Q100), it has historically been used in non-safety automotive accessories such as trip computers and aftermarket gauge clusters where the 128-segment LCD driver and 52 I/O pins drive odometer, fuel, and tachometer displays with minimal external logic. The 8-bit ADC reads resistive sensor inputs (fuel level, temperature). Trade-off: AEC-Q100 qualified successors like PIC16F946 require separate evaluation, and the -I suffix (-40C to +85C) covers cabin environments but not under-hood thermal ranges.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C924-08I/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C924-08/L | PIC16C924-08I/CL | PIC16C924T-08/L | PIC16C924-04I/L | PIC16C923-08I/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PLCC-68 | PLCC-68 - same | PLCC-68 - same | PLCC-68 - same | PLCC-68 - same | PLCC-68 - same |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB UV-EPROM | 7 KB OTP | 7 KB OTP | 4 KB OTP |
| Maximum Clock | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 4 MHz | 8 MHz |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
| LCD Driver Segments | Up to 128 | Up to 128 | Up to 128 | Up to 128 | Up to 128 | Up to 96 |
| I/O Pins | 52 | 52 | 52 | 52 | 52 | 52 |
| Supply Voltage | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V | 4.5 V to 6.0 V |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
Key Differentiators
- Industrial temperature grade (-40C to +85C) versus commercial-only sibling (vs PIC16C924-08/L)
- Higher maximum clock (8 MHz) versus 4 MHz sibling (vs PIC16C924-04I/L)
- Larger program memory (7 KB) versus 4 KB (vs PIC16C923-08I/L)
Design Notes
The PIC16C924-08I/L accepts a 4.5 V to 6.0 V supply on VDD with a separate VDD_LCD pin powering the LCD charge pump. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin and a 10 uF bulk tantalum or ceramic at the board entry point. The MCLR pin should be tied to VDD through a 10 kohm pull-up with a 100 nF capacitor to ground for noise immunity.
The 68-pin PLCC package has J-leads on all four edges with 1.27 mm pitch. Recommended PCB footprint uses 1.0 mm pad width and 0.6 mm pad length per IPC-7351 nominal guidelines. Keep crystal traces short (under 10 mm) and surround OSC1/OSC2 with a guard ring tied to ground to reduce EMI coupling into the LCD charge pump.
Do not assume PIC16C924 is flash-programmable; the device is OTP/UV-erasable, which complicates firmware iteration. For new designs, choose PIC16F946 (flash) instead. Also note the -I suffix is industrial grade (-40C to +85C); the bare PIC16C924-08/L is commercial (0C to +70C) and should not be used outdoors. Confirmed lifecycle status: NRND.
Estimated: At 8 MHz, the instruction cycle is 500 ns and the SSP clock can reach 5 MHz, making the LCD segment lines prone to capacitive crosstalk. Place a guard ground trace between adjacent LCD segment outputs and limit segment trace length to under 100 mm to keep RC delay below the 100 ns rise time target.
Compliance Information
RoHS/REACH compliance not explicitly stated in verified web data - check lot date code with distributor. Device is industrial-grade, not AEC-Q100 qualified; for automotive designs migrate to PIC16F946 family.
