PIC16LC926T-I/PT - 8-bit LCD MCU 14KB OTP 20MHz TQFP-64 | Microchip
MPN: PIC16LC926T-I/PT ✓ Hoạt độngPIC16LC926T-I/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC926T-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 PIC16LC926T-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Timers, Core Architecture, Operating Temperature Range.
PIC16LC926-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F917-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F914-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC924-04/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC67-04/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LC926T-I/PT Tỷ lệ tối đa & tính chất điện
| 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 |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Hộp | 64-pin TQFP (PT), 10 mm x 10 mm |
| Kiểu lắp đặt | Surface Mount |
| Oscillator Source | External crystal/clock (no internal oscillator documented) |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC16LC926T-I/PT
| Chân 1 | MCLR — Master Clear (reset) input, active-low |
| Chân 2 | RA0/AN0 — Port A bit 0 / ADC input 0 |
| Chân 3 | RA1/AN1 — Port A bit 1 / ADC input 1 |
| Chân 4 | RA2/AN2 — Port A bit 2 / ADC input 2 |
| Chân 5 | RA3/AN3/VREF+ — Port A bit 3 / ADC input 3 / VREF+ |
| Chân 6 | RA4/AN4/TOCK1 — Port A bit 4 / ADC input 4 / Timer0 clock |
| Chân 7 | RA5/AN5 — Port A bit 5 / ADC input 5 |
| Chân 8 | RE0/RD — Port E bit 0 / LCD read control |
| Chân 9 | RE1/WR — Port E bit 1 / LCD write control |
| Chân 10 | RE2/CS — Port E bit 2 / LCD chip select |
| Chân 11 | VDD — Positive supply (2.5V to 5.5V) |
| Chân 12 | VSS — Ground |
| Chân 13 | OSC1/CLKIN — Crystal input / external clock |
| Chân 14 | OSC2/CLKOUT — Crystal output / clock out |
| Chân 15 | RC0 — Port C bit 0 |
| Chân 16 | RC1 — Port C bit 1 |
| Chân 17 | RC2 — Port C bit 2 |
| Chân 18 | RC3 — Port C bit 3 |
| Chân 19 | RD0/PSP0 — Port D bit 0 / parallel slave port |
| Chân 20 | RD1/PSP1 — Port D bit 1 / parallel slave port |
| Chân 21 | RD2/PSP2 — Port D bit 2 / parallel slave port |
| Chân 22 | RD3/PSP3 — Port D bit 3 / parallel slave port |
| Chân 23 | RC4 — Port C bit 4 |
| Chân 24 | RC5 — Port C bit 5 |
| Chân 25 | RC6 — Port C bit 6 |
| Chân 26 | RC7 — Port C bit 7 |
| Chân 27 | RD4/PSP4 — Port D bit 4 / parallel slave port |
| Chân 28 | RD5/PSP5 — Port D bit 5 / parallel slave port |
| Chân 29 | RD6/PSP6 — Port D bit 6 / parallel slave port |
| Chân 30 | RD7/PSP7 — Port D bit 7 / parallel slave port |
| Chân 31 | VSS — Ground |
| Chân 32 | VDD — Positive supply |
| Chân 33 | RB0/INT — Port B bit 0 / external interrupt |
| Chân 34 | RB1 — Port B bit 1 |
| Chân 35 | RB2 — Port B bit 2 |
| Chân 36 | RB3 — Port B bit 3 |
| Chân 37 | RB4 — Port B bit 4 |
| Chân 38 | RB5 — Port B bit 5 |
| Chân 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| Chân 40 | RB7/PGD — Port B bit 7 / ICSP data |
| Chân 41 | SEG0 — LCD segment output 0 |
| Chân 42 | SEG1 — LCD segment output 1 |
| Chân 43 | SEG2 — LCD segment output 2 |
| Chân 44 | SEG3 — LCD segment output 3 |
| Chân 45 | SEG4 — LCD segment output 4 |
| Chân 46 | SEG5 — LCD segment output 5 |
| Chân 47 | SEG6 — LCD segment output 6 |
| Chân 48 | SEG7 — LCD segment output 7 |
| Chân 49 | SEG8 — LCD segment output 8 |
| Chân 50 | SEG9 — LCD segment output 9 |
| Chân 51 | SEG10 — LCD segment output 10 |
| Chân 52 | SEG11 — LCD segment output 11 |
| Chân 53 | SEG12 — LCD segment output 12 |
| Chân 54 | SEG13 — LCD segment output 13 |
| Chân 55 | SEG14 — LCD segment output 14 |
| Chân 56 | SEG15 — LCD segment output 15 |
| Chân 57 | SEG16 — LCD segment output 16 |
| Chân 58 | SEG17 — LCD segment output 17 |
| Chân 59 | SEG18 — LCD segment output 18 |
| Chân 60 | SEG19 — LCD segment output 19 |
| Chân 61 | SEG20/COM3 — LCD segment 20 / common 3 |
| Chân 62 | SEG21/COM2 — LCD segment 21 / common 2 |
| Chân 63 | SEG22/COM1 — LCD segment 22 / common 1 |
| Chân 64 | SEG23/COM0 — LCD segment 23 / common 0 |
Ứng dụng tiêu biểu
PIC16LC926T-I/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC926T-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 | 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 |
Bảo phân biệt quan trọng
- Largest LCD segment count in the PIC16F/LCD family for 64-pin TQFP (vsPIC16LC924-04/PT)
- Higher 20MHz CPU clock vs 4MHz parts in same TQFP-64 footprint (vsPIC16LC67-04/PT)
- OTP memory lock prevents firmware reverse-engineering (vsPIC16F917-I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
