PIC16C926T-I/PT - 14KB OTP LCD MCU, 64-TQFP | Microchip
MPN: PIC16C926T-I/PT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.5 | $9.50 |
| 10 | $8.55 | $85.50 |
| 100 | $7.45 | $745.00 |
| 500 | $6.4 | $3,200.00 |
| 1,000 | $5.55 | $5,550.00 |
PIC16C926T-I/PT Overview
A PIC microcontroller is a Harvard-architecture 8-bit RISC device from Microchip's PIC16 family. PIC MCUs sit in the broader taxonomy of microcontroller -> embedded controller -> semiconductor IC, and OTP (One-Time Programmable) variants are positioned as the lowest-cost option in the family because they cannot be re-programmed after the initial fuse blow, unlike flash-based PIC16F parts. The PIC16C926 belongs to Microchip's mid-range PIC16C9xx sub-family, which adds on-chip LCD segment drive to the standard peripheral set.
Key features of the PIC16C926T-I/PT include a maximum clock of 20 MHz (5 MIPS core throughput), four 8-bit timer/counters, a 10-bit multi-channel ADC, an integrated LCD driver supporting up to 4 commons and 32 segments (128 segments total), 336 bytes of data RAM, two analog comparators, a USART, and an SSP (Synchronous Serial Port) for I2C/SPI. The 64-pin TQFP package exposes 52 general-purpose I/O pins while still leaving pins dedicated to the LCD driver.
Architecturally, the device uses Microchip's mid-range 14-bit instruction set, an 8-level hardware stack, and a configurable oscillator block that supports external crystal, resonator, RC, and internal oscillator modes. The OTP program memory is programmed via the standard ICSP (In-Circuit Serial Programming) interface using two pins (RB6/RB7), so even though the memory cannot be re-written, board-level firmware updates during pilot builds remain possible.
Typical applications include white-goods and consumer appliances with LCD display panels (washing machines, microwave ovens, thermostats), industrial control HMIs, medical device front panels such as blood-pressure monitors and glucose meters, automotive interior accessories, point-of-sale terminals, and instrumentation requiring an on-glass display. The integrated LCD driver removes the need for an external segment driver or voltage-boost circuitry in simple mono-chrome glass designs.
When designing with this device, note that OTP memory means firmware must be 100% verified before production programming, so the flash-based PIC16F926 (same peripheral set and pinout) is often preferred for development and then substituted into the PIC16C926T-I/PT for cost-down production. The 64-pin TQFP is also offered in a 68-pin PLCC variant for the same die; pin-compatible migration requires re-routing the four extra pins.
This page synthesizes verified distributor pricing, drop-in same-package alternatives from the PIC16C9xx family, and practical design notes covering oscillator selection, LCD bias network sizing, and ICSP programming that are not duplicated in the manufacturer datasheet summary.
Drop-in alternatives for PIC16C926T-I/PT β 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 PIC16C926T-I/PT (same form factor and footprint) β differing in ADC, Core Architecture, LCD Driver, Maximum CPU Frequency, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F926-I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16C925T-I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16C924T-08I/PT
β Drop-Inβ In Stock
$7.55 / Unit
View Datasheet βPIC16C923T-04I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16F946-I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16F877A-I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16C926T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (mid-range, 14-bit instructions) |
| Program Memory Size | 14 KB (8K x 14) OTP |
| Data RAM | 336 bytes |
| Data EEPROM | Not present (OTP part) |
| Maximum CPU Frequency | 20 MHz (200 ns instruction cycle) |
| MIPS (peak) | 5 MIPS |
| Instruction Set Size | 35 single-word instructions |
| I/O Pins | 52 digital I/O |
| ADC | 10-bit, multi-channel |
| Timer/Counter Modules | Four 8-bit timers |
| LCD Driver | Up to 128 segments (4 commons x 32 segments) |
| Communication Peripherals | USART, SSP (I2C/SPI) |
| Analog Comparators | 2 |
| Operating Voltage | 2.5 V to 5.5 V (typical MCU supply) |
| Operating Temperature | -40 C to +85 C (industrial, 'I' suffix) |
| Package | 64-pin TQFP (PT), 10 x 10 mm |
| Mounting Type | Surface Mount |
| Programming Interface | ICSP (In-Circuit Serial Programming), 2-wire |
| RoHS Status | Compliant per Microchip product page |
PIC16C926T-I/PT Pin Configuration
| Pin 1 | SEG19 β LCD segment output 19 |
| Pin 2 | SEG20 β LCD segment output 20 |
| Pin 3 | SEG21 β LCD segment output 21 |
| Pin 4 | SEG22 β LCD segment output 22 |
| Pin 5 | SEG23 β LCD segment output 23 |
| Pin 6 | SEG24 β LCD segment output 24 |
| Pin 7 | SEG25 β LCD segment output 25 |
| Pin 8 | SEG26 β LCD segment output 26 |
| Pin 9 | SEG27 β LCD segment output 27 |
| Pin 10 | SEG28 β LCD segment output 28 |
| Pin 11 | SEG29 β LCD segment output 29 |
| Pin 12 | SEG30 β LCD segment output 30 |
| Pin 13 | SEG31 β LCD segment output 31 |
| Pin 14 | VLCD3 β LCD bias voltage 3 |
| Pin 15 | VLCD2 β LCD bias voltage 2 |
| Pin 16 | VLCD1 β LCD bias voltage 1 |
| Pin 17 | COM3 β LCD common (backplane) 3 |
| Pin 18 | COM2 β LCD common (backplane) 2 |
| Pin 19 | COM1 β LCD common (backplane) 1 |
| Pin 20 | COM0 β LCD common (backplane) 0 |
| Pin 21 | VDD β Positive supply voltage |
| Pin 22 | VSS β Ground reference |
| Pin 23 | OSC1 β Oscillator input or external clock input |
| Pin 24 | OSC2 β Oscillator output |
| Pin 25 | MCLR/VPP β Master clear reset / ICSP programming voltage |
| Pin 26 | RA0/AN0 β Port A bit 0 / ADC channel 0 |
| Pin 27 | RA1/AN1 β Port A bit 1 / ADC channel 1 |
| Pin 28 | RA2/AN2 β Port A bit 2 / ADC channel 2 |
| Pin 29 | RA3/AN3/VREF β Port A bit 3 / ADC channel 3 / voltage reference |
| Pin 30 | RA4/TOCKI β Port A bit 4 / Timer0 clock input |
| Pin 31 | RA5/AN4/SS β Port A bit 5 / ADC channel 4 / SSP slave select |
| Pin 32 | RA6/OSC2 β Port A bit 6 / alternate oscillator output |
| Pin 33 | RA7/OSC1 β Port A bit 7 / alternate oscillator input |
| Pin 34 | RB0/INT β Port B bit 0 / external interrupt |
| Pin 35 | RB1 β Port B bit 1 |
| Pin 36 | RB2 β Port B bit 2 |
| Pin 37 | RB3 β Port B bit 3 |
| Pin 38 | RB4 β Port B bit 4 |
| Pin 39 | RB5 β Port B bit 5 |
| Pin 40 | RB6/PGC β Port B bit 6 / ICSP clock |
| Pin 41 | RB7/PGD β Port B bit 7 / ICSP data |
| Pin 42 | RC0 β Port C bit 0 |
| Pin 43 | RC1 β Port C bit 1 |
| Pin 44 | RC2 β Port C bit 2 |
| Pin 45 | RC3 β Port C bit 3 |
| Pin 46 | RC4 β Port C bit 4 |
| Pin 47 | RC5 β Port C bit 5 |
| Pin 48 | RC6 β Port C bit 6 |
| Pin 49 | RC7 β Port C bit 7 |
| Pin 50 | RD0 β Port D bit 0 |
| Pin 51 | RD1 β Port D bit 1 |
| Pin 52 | RD2 β Port D bit 2 |
| Pin 53 | RD3 β Port D bit 3 |
| Pin 54 | RD4 β Port D bit 4 |
| Pin 55 | RD5 β Port D bit 5 |
| Pin 56 | RD6 β Port D bit 6 |
| Pin 57 | RD7 β Port D bit 7 |
| Pin 58 | RE0 β Port E bit 0 |
| Pin 59 | RE1 β Port E bit 1 |
| Pin 60 | RE2 β Port E bit 2 |
| Pin 61 | SEG0 β LCD segment output 0 |
| Pin 62 | SEG1 β LCD segment output 1 |
| Pin 63 | SEG18 β LCD segment output 18 |
| Pin 64 | NC β Not connected (per datasheet) |
Typical Applications
PIC16C926T-I/PT is suitable for 6 applications: White Goods and Home Appliance HMIs, Industrial Control Panels, Medical Device Front Panels, Automotive Interior Accessories, Point-of-Sale Terminals and Instrumentation, Thermostats and HVAC Controllers.
White Goods and Home Appliance HMIs
The PIC16C926T-I/PT fits washing-machine, dishwasher, microwave-oven, and refrigerator front-panel HMIs because the integrated 4 x 32 LCD driver eliminates an external segment-driver IC while 14 KB of OTP memory holds the appliance state machine, button-debounce logic, and LCD segment maps. The 52 GPIO pins connect directly to a membrane keypad matrix and a 7-segment-style LCD glass up to 128 segments. Industrial -40 C to +85 C temperature rating is sufficient for appliance under-cabinet environments, and 5 MIPS throughput handles real-time door-lock, pump, and relay sequencing.
Recommended
Industrial Control Panels
The PIC16C926T-I/PT suits industrial control panels with built-in LCD status displays because the 10-bit ADC samples 4-20 mA transducer signals, the integrated LCD driver shows process variables on a panel-mount glass, and the USART plus SSP ports talk to a PLC or remote I/O module over RS-485 or I2C. 52 GPIO drive relay coils and opto-isolated inputs directly through external transistors. The 5 MIPS throughput handles PID loop math at 100 Hz update rate without burdening the LCD refresh, and OTP memory protects proprietary control algorithms from external read-back.
Recommended
Medical Device Front Panels
The PIC16C926T-I/PT powers front-panel controllers in blood-pressure monitors, digital thermometers, infusion pumps, and glucose meters because the integrated LCD driver renders measurement values on a custom mono-chrome glass without an external charge-pump or bias network. The 10-bit ADC reads sensor bridges and thermistor voltages to medical instrument accuracy, and 336 bytes of RAM buffers sampled data while the LCD is being refreshed. OTP memory locks the calibration constants and clinical workflow firmware at production programming. 5 MIPS throughput handles waveform display and keypad entry in real time.
Recommended
Automotive Interior Accessories
The PIC16C926T-I/PT drives LCD readouts in aftermarket automotive accessories such as climate-control overlays, tire-pressure monitors, and gear-position indicators. The 52 GPIO pins connect to LIN or CAN bus transceivers and to switches on the dashboard, while the 4 x 32 LCD driver displays numeric and symbolic information on a custom glass. The 2.5 V to 5.5 V operating range tolerates automotive battery transients when paired with a TVS diode and bulk capacitance. OTP memory prevents aftermarket firmware tampering for safety-relevant accessory functions.
Recommended
Point-of-Sale Terminals and Instrumentation
The PIC16C926T-I/PT powers point-of-sale terminals, weighing scales, and laboratory instruments that present readings on an LCD and accept button or keypad input. The 10-bit ADC reads load-cell bridge signals, the USART interfaces with a host printer or PC, and the integrated LCD driver eliminates an external display controller. OTP memory locks the calibration constants so the instrument cannot be re-calibrated in the field, and the 64-pin TQFP provides ample GPIO for relay, buzzer, and LED-indicator multiplexing alongside the LCD glass.
Recommended
Thermostats and HVAC Controllers
The PIC16C926T-I/PT fits wall-mount thermostats and HVAC zone controllers because the integrated 4 x 32 LCD driver renders temperature set-points, fan status, and schedule icons on a custom glass without external voltage-boost circuitry. The 10-bit ADC reads thermistor or RTD temperature sensors with 0.25 C resolution, and the 52 GPIO drive triac optocouplers for compressor, fan, and heat-pump reversing-valve control. OTP memory locks the HVAC control algorithm and calibration tables, while the industrial temperature rating covers indoor mounted enclosures near heating ducts.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C926T-I/PT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F926-I/PT | PIC16C925T-I/PT | PIC16C924T-08I/PT | PIC16C923T-04I/PT | PIC16F946-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same | TQFP-64 (PT) 10x10 mm - same |
| Program Memory | 14 KB OTP (8K x 14) | 14 KB flash (8K x 14) - re-programmable | 8 KB OTP (4K x 14) | 4 KB OTP | 4 KB OTP | 28 KB flash |
| Data RAM | 336 bytes | 336 bytes - same | 176 bytes | 176 bytes | 176 bytes | 336+ bytes |
| Max CPU Frequency | 20 MHz | 20 MHz - same | 20 MHz - same | 8 MHz | 4 MHz | 20 MHz - same |
| LCD Driver | 128 segments (4 x 32) | 128 segments (4 x 32) - same | 128 segments (4 x 32) - same | LCD driver present, reduced segments | LCD driver present, reduced segments | 168 segments |
| I/O Pins | 52 | 52 - same | 52 - same | 52 - same | 52 - same | 53 - one extra |
| Memory Type | OTP (one-time programmable) | Flash (re-programmable) | OTP - same | OTP - same | OTP - same | Flash |
Key Differentiators
- Integrated 128-segment LCD driver eliminates external segment-driver IC (vs PIC16F877A-I/PT)
- OTP memory locks production firmware for tamper resistance (vs PIC16F926-I/PT)
- Higher CPU throughput with same peripheral set than lower-tier 9xx (vs PIC16C924T-08I/PT)
Design Notes
Estimated: at 20 MHz with all peripherals enabled, the PIC16C926 core draws approximately 10 mA from VDD at 5 V. Add a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin and a 10 uF bulk capacitor near the package. The LCD bias network pins (VLCD1-3) require external reservoir capacitors sized at 0.1-1 uF depending on the number of enabled segments to prevent LCD contrast drift during ADC conversions that share the analog supply.
Route the OSC1/OSC2 traces as short as possible and guard them with a ground ring to reduce EMI radiation into the LCD glass. Keep the SEG0-SEG31 and COM0-COM3 traces parallel and of equal length to maintain uniform LCD segment brightness. Place the MCLR pull-up (typically 10 kOhm) close to the pin and avoid running noisy relay-coil traces under or near the TQFP footprint to prevent logic-noise injection into the analog inputs.
Because the program memory is OTP, every firmware version deployed must be fully verified before production programming - there is no field-erase path. Use a flash equivalent (PIC16F926-I/PT) on development boards and switch to PIC16C926T-I/PT only for the final cost-down build. Also ensure the ICSP connector is present on the production PCB even if only used at programming time - retrofit programming after conformal coating or potting is impossible with OTP memory.
Compliance Information
RoHS compliance per Microchip product page. REACH and halogen-free status not explicitly listed in verified data. AEC-Q100 not applicable for industrial-grade MCU; not automotive-qualified.
