PIC16C926T-I/PT - 14KB OTP LCD MCU, 64-TQFP | Microchip
MPN: PIC16C926T-I/PT ✓ Hoạt độngPIC16C926T-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC16C926T-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C926T-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, I/O Pins, Timers, Communication Peripherals.
PIC16F926-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C925T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924T-08I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C923T-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F946-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F877A-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C926T-I/PT Tỷ lệ tối đa & tính chất điện
| 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) |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial, 'I' suffix) |
| Hộp | 64-pin TQFP (PT), 10 x 10 mm |
| Kiểu lắp đặt | Surface Mount |
| Programming Interface | ICSP (In-Circuit Serial Programming), 2-wire |
| Trạng thái RoHS | Compliant per Microchip product page |
Cấu hình chân PIC16C926T-I/PT
| Chân 1 | SEG19 — LCD segment output 19 |
| Chân 2 | SEG20 — LCD segment output 20 |
| Chân 3 | SEG21 — LCD segment output 21 |
| Chân 4 | SEG22 — LCD segment output 22 |
| Chân 5 | SEG23 — LCD segment output 23 |
| Chân 6 | SEG24 — LCD segment output 24 |
| Chân 7 | SEG25 — LCD segment output 25 |
| Chân 8 | SEG26 — LCD segment output 26 |
| Chân 9 | SEG27 — LCD segment output 27 |
| Chân 10 | SEG28 — LCD segment output 28 |
| Chân 11 | SEG29 — LCD segment output 29 |
| Chân 12 | SEG30 — LCD segment output 30 |
| Chân 13 | SEG31 — LCD segment output 31 |
| Chân 14 | VLCD3 — LCD bias voltage 3 |
| Chân 15 | VLCD2 — LCD bias voltage 2 |
| Chân 16 | VLCD1 — LCD bias voltage 1 |
| Chân 17 | COM3 — LCD common (backplane) 3 |
| Chân 18 | COM2 — LCD common (backplane) 2 |
| Chân 19 | COM1 — LCD common (backplane) 1 |
| Chân 20 | COM0 — LCD common (backplane) 0 |
| Chân 21 | VDD — Positive supply voltage |
| Chân 22 | VSS — Ground reference |
| Chân 23 | OSC1 — Oscillator input or external clock input |
| Chân 24 | OSC2 — Oscillator output |
| Chân 25 | MCLR/VPP — Master clear reset / ICSP programming voltage |
| Chân 26 | RA0/AN0 — Port A bit 0 / ADC channel 0 |
| Chân 27 | RA1/AN1 — Port A bit 1 / ADC channel 1 |
| Chân 28 | RA2/AN2 — Port A bit 2 / ADC channel 2 |
| Chân 29 | RA3/AN3/VREF — Port A bit 3 / ADC channel 3 / voltage reference |
| Chân 30 | RA4/TOCKI — Port A bit 4 / Timer0 clock input |
| Chân 31 | RA5/AN4/SS — Port A bit 5 / ADC channel 4 / SSP slave select |
| Chân 32 | RA6/OSC2 — Port A bit 6 / alternate oscillator output |
| Chân 33 | RA7/OSC1 — Port A bit 7 / alternate oscillator input |
| Chân 34 | RB0/INT — Port B bit 0 / external interrupt |
| Chân 35 | RB1 — Port B bit 1 |
| Chân 36 | RB2 — Port B bit 2 |
| Chân 37 | RB3 — Port B bit 3 |
| Chân 38 | RB4 — Port B bit 4 |
| Chân 39 | RB5 — Port B bit 5 |
| Chân 40 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 41 | RB7/PGD — Port B bit 7 / ICSP data |
| Chân 42 | RC0 — Port C bit 0 |
| Chân 43 | RC1 — Port C bit 1 |
| Chân 44 | RC2 — Port C bit 2 |
| Chân 45 | RC3 — Port C bit 3 |
| Chân 46 | RC4 — Port C bit 4 |
| Chân 47 | RC5 — Port C bit 5 |
| Chân 48 | RC6 — Port C bit 6 |
| Chân 49 | RC7 — Port C bit 7 |
| Chân 50 | RD0 — Port D bit 0 |
| Chân 51 | RD1 — Port D bit 1 |
| Chân 52 | RD2 — Port D bit 2 |
| Chân 53 | RD3 — Port D bit 3 |
| Chân 54 | RD4 — Port D bit 4 |
| Chân 55 | RD5 — Port D bit 5 |
| Chân 56 | RD6 — Port D bit 6 |
| Chân 57 | RD7 — Port D bit 7 |
| Chân 58 | RE0 — Port E bit 0 |
| Chân 59 | RE1 — Port E bit 1 |
| Chân 60 | RE2 — Port E bit 2 |
| Chân 61 | SEG0 — LCD segment output 0 |
| Chân 62 | SEG1 — LCD segment output 1 |
| Chân 63 | SEG18 — LCD segment output 18 |
| Chân 64 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16C926T-I/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C926T-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Integrated 128-segment LCD driver eliminates external segment-driver IC (vsPIC16F877A-I/PT)
- OTP memory locks production firmware for tamper resistance (vsPIC16F926-I/PT)
- Higher CPU throughput with same peripheral set than lower-tier 9xx (vsPIC16C924T-08I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
