PIC16LC926T-I/PT - 8-bit LCD MCU 14KB OTP 20MHz TQFP-64 | Microchip
MPN: PIC16LC926T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.42 | $9.42 |
| 10 | $8.55 | $85.50 |
| 100 | $7.71 | $771.00 |
| 500 | $6.93 | $3,465.00 |
| 1,000 | $6.18 | $6,180.00 |
PIC16LC926T-I/PT Overview
An 8-bit PIC microcontroller (often called MCU or microcontroller unit) is a single-chip computer integrating a CPU core, program memory, RAM, peripheral set, and I/O on one die; it sits inside the broader taxonomy of embedded microcontrollers -> microprocessors -> semiconductors, and is the canonical choice for low-power, deterministic control tasks where a Cortex-M or DSP would be over-specified.
Key features include 25 digital I/O lines, an integrated LCD driver capable of up to 4 common x 32 segment duty-multiplexed panel control, a 10-bit 5-channel analog-to-digital converter, two 8-bit timers plus one 16-bit timer, a watchdog timer (WDT), brown-out reset (BOR), power-on reset (POR), I2C and SPI synchronous serial ports, and PWM with capture/compare capability. The device is fabricated on Microchip's mature OTP CMOS process and uses an external oscillator reference for system clocking.
The architecture pairs a 14-bit wide instruction word with a Harvard bus layout, allowing most instructions to execute in one instruction cycle and yielding strong deterministic interrupt response - a property valued in appliance, metering, and instrumentation firmware. Five channels of 10-bit ADC suit sensor front-ends for temperature, voltage, and current monitoring, while the LCD driver eliminates the need for an external charge-pump or segment-driver ASIC.
Typical applications include white-good and appliance user-interface panels, electronic utility meters, portable medical instruments with segment LCDs, automotive dashboard sub-displays (non-safety), and industrial HMI controllers. The combination of LCD driver, ADC, and moderate I/O count on one die makes it attractive for cost-sensitive human-machine-interface nodes.
When designing in this MCU, confirm oscillator selection matches the application: a 20MHz crystal is required for full-speed operation and the PLL is not used. Reserve one I/O line for the MCLR reset function and ensure the BOR level is configured for the actual supply rail. Program OTP devices in volume using a gang programmer, since OTP cannot be erased in-circuit.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, giving procurement and embedded engineers a faster path to selection and qualification.
Drop-in alternatives for PIC16LC926T-I/PT — 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 PIC16LC926T-I/PT (same form factor and footprint) — differing in Package, Core Architecture, Program Memory Size, Timers, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LC926-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.2 / Unit
View Datasheet →PIC16F917-I/PT
✅ Drop-In✓ In Stock
$2.71 / Unit
View Datasheet →PIC16F914-I/PT
✅ Drop-In✓ In Stock
$2.35 / Unit
View Datasheet →PIC16LC924-04/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.42 / Unit
View Datasheet →PIC16LC67-04/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.98 / Unit
View Datasheet →PIC16LC926T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16C 8-bit Harvard RISC |
| Program Memory Size | 14 KB (8K x 14) OTP |
| RAM Size | 336 x 8 bytes |
| Maximum CPU Clock | 20 MHz |
| Supply Voltage Range | 2.5 V to 5.5 V (LC variant) |
| Digital I/O Pins | 25 |
| ADC | 5 channels x 10-bit |
| LCD Driver | Up to 4 Common x 32 Segment, integrated charge pump |
| Timers | 2 x 8-bit Timer0/Timer2 + 1 x 16-bit Timer1 |
| Communication Interfaces | I2C, SPI (MSSP), USART |
| PWM / CCP | PWM output, Capture/Compare module |
| Watchdog Timer (WDT) | Yes, software-enabled |
| Brown-out Reset (BOR) | Yes, configurable |
| Power-on Reset (POR) | Yes |
| Operating Temperature Range | -40 C to +85 C (industrial) |
| Package | 64-pin TQFP (PT), 10 mm x 10 mm |
| Mounting Type | Surface Mount |
| Oscillator Source | External crystal/clock (no internal oscillator documented) |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LC926T-I/PT Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active-low |
| Pin 2 | RA0/AN0 — Port A bit 0 / ADC input 0 |
| Pin 3 | RA1/AN1 — Port A bit 1 / ADC input 1 |
| Pin 4 | RA2/AN2 — Port A bit 2 / ADC input 2 |
| Pin 5 | RA3/AN3/VREF+ — Port A bit 3 / ADC input 3 / VREF+ |
| Pin 6 | RA4/AN4/TOCK1 — Port A bit 4 / ADC input 4 / Timer0 clock |
| Pin 7 | RA5/AN5 — Port A bit 5 / ADC input 5 |
| Pin 8 | RE0/RD — Port E bit 0 / LCD read control |
| Pin 9 | RE1/WR — Port E bit 1 / LCD write control |
| Pin 10 | RE2/CS — Port E bit 2 / LCD chip select |
| Pin 11 | VDD — Positive supply (2.5V to 5.5V) |
| Pin 12 | VSS — Ground |
| Pin 13 | OSC1/CLKIN — Crystal input / external clock |
| Pin 14 | OSC2/CLKOUT — Crystal output / clock out |
| Pin 15 | RC0 — Port C bit 0 |
| Pin 16 | RC1 — Port C bit 1 |
| Pin 17 | RC2 — Port C bit 2 |
| Pin 18 | RC3 — Port C bit 3 |
| Pin 19 | RD0/PSP0 — Port D bit 0 / parallel slave port |
| Pin 20 | RD1/PSP1 — Port D bit 1 / parallel slave port |
| Pin 21 | RD2/PSP2 — Port D bit 2 / parallel slave port |
| Pin 22 | RD3/PSP3 — Port D bit 3 / parallel slave port |
| Pin 23 | RC4 — Port C bit 4 |
| Pin 24 | RC5 — Port C bit 5 |
| Pin 25 | RC6 — Port C bit 6 |
| Pin 26 | RC7 — Port C bit 7 |
| Pin 27 | RD4/PSP4 — Port D bit 4 / parallel slave port |
| Pin 28 | RD5/PSP5 — Port D bit 5 / parallel slave port |
| Pin 29 | RD6/PSP6 — Port D bit 6 / parallel slave port |
| Pin 30 | RD7/PSP7 — Port D bit 7 / parallel slave port |
| Pin 31 | VSS — Ground |
| Pin 32 | VDD — Positive supply |
| 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/PGC — Port B bit 6 / ICSP clock |
| Pin 40 | RB7/PGD — Port B bit 7 / ICSP data |
| Pin 41 | SEG0 — LCD segment output 0 |
| Pin 42 | SEG1 — LCD segment output 1 |
| Pin 43 | SEG2 — LCD segment output 2 |
| Pin 44 | SEG3 — LCD segment output 3 |
| Pin 45 | SEG4 — LCD segment output 4 |
| Pin 46 | SEG5 — LCD segment output 5 |
| Pin 47 | SEG6 — LCD segment output 6 |
| Pin 48 | SEG7 — LCD segment output 7 |
| Pin 49 | SEG8 — LCD segment output 8 |
| Pin 50 | SEG9 — LCD segment output 9 |
| Pin 51 | SEG10 — LCD segment output 10 |
| Pin 52 | SEG11 — LCD segment output 11 |
| Pin 53 | SEG12 — LCD segment output 12 |
| Pin 54 | SEG13 — LCD segment output 13 |
| Pin 55 | SEG14 — LCD segment output 14 |
| Pin 56 | SEG15 — LCD segment output 15 |
| Pin 57 | SEG16 — LCD segment output 16 |
| Pin 58 | SEG17 — LCD segment output 17 |
| Pin 59 | SEG18 — LCD segment output 18 |
| Pin 60 | SEG19 — LCD segment output 19 |
| Pin 61 | SEG20/COM3 — LCD segment 20 / common 3 |
| Pin 62 | SEG21/COM2 — LCD segment 21 / common 2 |
| Pin 63 | SEG22/COM1 — LCD segment 22 / common 1 |
| Pin 64 | SEG23/COM0 — LCD segment 23 / common 0 |
Typical Applications
PIC16LC926T-I/PT is suitable for 6 applications: White Goods and Appliance HMI Panels, Electronic Utility Meters and Energy Monitors, Portable Medical Instruments with Segment LCD, Industrial Process Controllers and Timers, Automotive Dashboard Sub-Displays, Point-of-Sale Terminals and Printers.
White Goods and Appliance HMI Panels
The PIC16LC926T-I/PT is well suited for front-panel human-machine interface (HMI) controllers in washing machines, ovens, dishwashers, and refrigerators where a segment LCD display with 4 commons and up to 32 segments is required. The integrated LCD driver eliminates an external HT1621 or similar segment-driver ASIC, reducing BOM cost by roughly $0.40-0.60 per board, while the 5-channel 10-bit ADC reads temperature sensors, door switches, and water-level probes. The industrial -40C to +85C range and 2.5V-5.5V supply allow direct operation from a rectified 5V rail after the SMPS. Place a 100nF decoupling capacitor within 5mm of each VDD pin to suppress reset noise.
Recommended
Electronic Utility Meters and Energy Monitors
The PIC16LC926T-I/PT suits single-phase electricity, gas, and water meters that display consumption on a 4x32 segment LCD with months of battery life. The 2.5V-5.5V supply range lets it run directly from two alkaline cells or a 3.6V lithium thionyl chloride primary cell, while the sub-5 uA sleep current keeps quiescent drain low between ADC conversions. OTP memory prevents firmware tampering, which matters for metrology certification. Drive the meter's current shunt or Rogowski coil into the 10-bit ADC through an external op-amp first stage; the 5-channel ADC samples V and I simultaneously for true-RMS power calculation.
Recommended
Portable Medical Instruments with Segment LCD
The PIC16LC926T-I/PT serves as the controller in portable medical devices such as blood-pressure monitors, glucometers, and digital thermometers that display results on a 4x32 segment LCD. The 25 I/O lines accommodate a keypad matrix, the LCD driver, a sensor interface, and serial comms to a host PC. The 2.5V-5.5V supply is compatible with two AAA cells, and the industrial temperature range handles cold-storage pharmaceutical environments. Use the USART to output readings to a USB-UART bridge; add 1k series resistors on the RX/TX lines for ESD protection during patient handling.
Recommended
Industrial Process Controllers and Timers
The PIC16LC926T-I/PT fits DIN-rail industrial controllers, panel-mount timers, and HVAC zone controllers that present status on a segment LCD and accept push-button inputs. The integrated 16-bit Timer1 with capture/compare handles pulse counting from flow meters or encoders up to 20MHz, while the PWM drives solid-state relays or heater MOSFETs. Brown-out reset ensures correct restart after a brown-out on noisy 24V industrial rails. Place a TVS diode and bulk capacitor on VDD to survive IEC 61000-4-4 burst transients. OTP firmware locks the controller's calibration and prevents unauthorized parameter cloning.
Recommended
Automotive Dashboard Sub-Displays
Non-safety automotive sub-displays such as HVAC control panels, audio head-unit readouts, and trip-computer modules can use the PIC16LC926T-I/PT. The integrated LCD driver directly drives 4x32 segment panels used in climate-control faceplates, while the I2C and SPI ports interface with the body control module over a LIN-transceiver bridge. The -40C to +85C industrial temperature range covers cabin environments, though under-hood applications require AEC-Q100 qualification which the LC926 does not carry. Add a ferrite bead and reverse-polarity TVS on the VDD line to handle load-dump transients up to 40V during cranking.
Recommended
Point-of-Sale Terminals and Printers
The PIC16LC926T-I/PT controls small thermal receipt printers, barcode scanners, and simple point-of-sale terminals that show transaction status on a 4x32 segment LCD. The PWM drives the thermal printhead heater through a power MOSFET, while the I2C port reads the paper-presence sensor and SPI drives the LCD driver backup chip. OTP firmware locks the payment-processing routines against cloning. The 20MHz CPU clock supports paper-feed motor speed-control loops at 5kHz update rate without taxing the instruction budget. Use optocouplers on motor-driver outputs to isolate the logic ground from the noisy DC motor return path.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LC926T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LC926-I/PT | PIC16F917-I/PT | PIC16F914-I/PT | PIC16LC924-04/PT | PIC16LC67-04/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Program Memory | 14 KB OTP | 14 KB OTP | 14 KB Flash | 14 KB Flash | 8 KB OTP | 14 KB OTP |
| Maximum CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 4 MHz |
| RAM Size | 336 x 8 bytes | 336 x 8 bytes | 336 x 8 bytes | 256 x 8 bytes | 192 x 8 bytes | 336 x 8 bytes |
| LCD Driver | 4 COM x 32 SEG | 4 COM x 32 SEG | 4 COM x 32 SEG | 4 COM x 32 SEG | Reduced LCD (1/2 duty) | None |
| ADC | 5 ch x 10-bit | 5 ch x 10-bit | 5 ch x 10-bit | 5 ch x 10-bit | 5 ch x 10-bit | 8 ch x 10-bit |
| Memory Type | OTP (one-time programmable) | OTP | Flash (reprogrammable) | Flash (reprogrammable) | OTP | OTP |
| Lifecycle Status | active | active | active | active | active | active |
Key Differentiators
- Largest LCD segment count in the PIC16F/LCD family for 64-pin TQFP (vs PIC16LC924-04/PT)
- Higher 20MHz CPU clock vs 4MHz parts in same TQFP-64 footprint (vs PIC16LC67-04/PT)
- OTP memory lock prevents firmware reverse-engineering (vs PIC16F917-I/PT)
Design Notes
The PIC16LC926T-I/PT supports 2.5V-5.5V supply, but brown-out reset (BOR) thresholds must be configured for the actual rail. At 3.3V operation, program BOR at 2.5V; at 5V operation, use 4.5V. Estimated: a 100nF ceramic decoupling capacitor within 5mm of each VDD/VSS pair is mandatory, and a 10uF bulk capacitor at the supply entry point suppresses SMPS switching ripple. Do not power the LCD charge pump and ADC from the same decoupling node to avoid reference-noise coupling.
OTP memory cannot be erased or rewritten, so a wrong firmware image bricked the device permanently. Use a PIC16F917-I/PT (flash) for development and qualification, then migrate to PIC16LC926T-I/PT for production to lock firmware. Estimated: each OTP programming cycle adds roughly $0.15-0.30 per unit to the BOM programming cost, and gang programmers can program 8-16 devices in parallel to keep throughput high. Always program a device-ID and firmware-version word in a reserved EEPROM-equivalent location before the first OTP lock.
Keep the 20MHz crystal traces (OSC1/OSC2) under 5mm and surround them with a ground guard ring to avoid radiated EMI coupling into the LCD segment lines. The TQFP-64 has a 0.5mm pitch - reflow with SAC305 paste and a peak temperature of 245C for 30 seconds maximum. Estimated: the LCD SEG lines should be routed on the same layer to avoid return-path discontinuities, and a 100k pull-up on MCLR prevents spurious resets during power-up ramp.
Compliance Information
RoHS and REACH compliant per Microchip product page; lead-free matte-tin finish; not AEC-Q100 qualified so not recommended for automotive safety-critical applications.
