PIC16C926-I/L - 8-bit 20MHz MCU 14KB OTP LCD | Microchip
MPN: PIC16C926-I/L ⚠ Lần mua cuốiPIC16C926-I/L Tóm tắt
Background: An 8-bit microcontroller (MCU) is a single-chip computer optimized for embedded control, integrating a CPU core, program memory, data RAM, and peripherals such as timers, ADCs, and communication interfaces. Within the PIC16CXXX mid-range family, the PIC16C926 occupies a specialized niche as a cost-optimized LCD-controller MCU, combining general-purpose digital I/O with an integrated segment-LCD driver, eliminating the need for an external LCD controller chip in human-machine interface designs.
Key features: 20 MHz maximum clock with 200 ns instruction cycle, 14KB OTP program memory (one-time programmable, ideal for mature production), 336 bytes of RAM, 52 digital I/O pins, integrated 10-bit 5-channel ADC, integrated LCD driver supporting 32 segments x 4 commons, and synchronous serial port configurable as 3-wire SPI or 2-wire I2C. The 68-pin PLCC package provides ample pin count for the LCD segment lines and parallel I/O expansion.
Technical depth: The PIC16C926 executes instructions in a single cycle (200 ns at 20 MHz) using Microchip's Harvard-architecture RISC core with 35 single-word instructions. The integrated LCD driver uses charge-pump-derived bias voltages and supports static, 1/2, 1/3, and 1/4 duty cycles, enabling glass-direct drive of character and graphic LCD modules without external voltage generation.
Typical applications: industrial control panels with LCD readouts, medical instrument front panels, appliance user interfaces, metering equipment, and point-of-sale terminals. The integrated LCD driver and ADC channel count make it particularly suited to battery-powered instrumentation that displays measured values on a segmented glass.
Design consideration: The OTP (one-time programmable) memory mandates that firmware be fully validated before programming; field updates are not possible. Engineers should evaluate PIC16F926 (Flash-based, pin-compatible) for prototyping or designs that may require firmware revision.
This page synthesizes distributor pricing, cross-reference alternatives within the PIC16 mid-range family, and design guidance not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C926-I/L — 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 PIC16C926-I/L (cùng hình factor và footprint) — khác nhau ở LCD Driver, Package, Program Memory Size, ADC, Core Architecture.
PIC16F926-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C925-I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C926T-I/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C924-04I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C924/CL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C926-I/L Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16CXXX mid-range 8-bit RISC |
| Instruction Set | 35 single-word instructions |
| Maximum CPU Clock | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 14 KB (8K x 14) |
| Data RAM | 336 bytes |
| Digital I/O Pins | 52 |
| ADC | 10-bit, 5 channels |
| LCD Driver | 32 segments x 4 commons |
| Serial Interface | SSP (SPI / I2C configurable) |
| Hộp | 68-PLCC (24.23 x 24.23 mm) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, -I suffix) |
| Kiểu lắp đặt | Surface Mount (PLCC socket compatible) |
Cấu hình chân PIC16C926-I/L
| Chân 1 | SEG0 — LCD Segment 0 driver |
| Chân 2 | SEG1 — LCD Segment 1 driver |
| Chân 3 | SEG2 — LCD Segment 2 driver |
| Chân 4 | SEG3 — LCD Segment 3 driver |
| Chân 5 | SEG4 — LCD Segment 4 driver |
| Chân 6 | SEG5 — LCD Segment 5 driver |
| Chân 7 | SEG6 — LCD Segment 6 driver |
| Chân 8 | SEG7 — LCD Segment 7 driver |
| Chân 9 | SEG8 — LCD Segment 8 driver |
| Chân 10 | SEG9 — LCD Segment 9 driver |
| Chân 11 | SEG10 — LCD Segment 10 driver |
| Chân 12 | SEG11 — LCD Segment 11 driver |
| Chân 13 | SEG12 — LCD Segment 12 driver |
| Chân 14 | SEG13 — LCD Segment 13 driver |
| Chân 15 | SEG14 — LCD Segment 14 driver |
| Chân 16 | SEG15 — LCD Segment 15 driver |
| Chân 17 | VDD — Positive power supply |
| Chân 18 | VSS — Ground reference |
| Chân 19 | OSC1 — Crystal oscillator input |
| Chân 20 | OSC2 — Crystal oscillator output |
| Chân 21 | MCLR — Master Clear (reset) input |
| Chân 22 | RA0/AN0 — PORTA bit 0 / ADC channel 0 |
| Chân 23 | RA1/AN1 — PORTA bit 1 / ADC channel 1 |
| Chân 24 | RA2/AN2 — PORTA bit 2 / ADC channel 2 |
| Chân 25 | RA3/AN3/VREF+ — PORTA bit 3 / ADC channel 3 / ADC positive reference |
| Chân 26 | RA4/AN4 — PORTA bit 4 / ADC channel 4 |
| Chân 27 | RA5 — PORTA bit 5 |
| Chân 28 | RB0/INT — PORTB bit 0 / External interrupt |
| Chân 29 | RB1 — PORTB bit 1 |
| Chân 30 | RB2 — PORTB bit 2 |
| Chân 31 | RB3 — PORTB bit 3 |
| Chân 32 | RB4 — PORTB bit 4 |
| Chân 33 | RB5 — PORTB bit 5 |
| Chân 34 | RB6 — PORTB bit 6 |
| Chân 35 | RB7 — PORTB bit 7 |
| Chân 36 | RC0 — PORTC bit 0 |
| Chân 37 | RC1 — PORTC bit 1 |
| Chân 38 | RC2 — PORTC bit 2 |
| Chân 39 | RC3 — PORTC bit 3 |
| Chân 40 | RC4 — PORTC bit 4 |
| Chân 41 | RC5 — PORTC bit 5 |
| Chân 42 | RC6 — PORTC bit 6 |
| Chân 43 | RC7 — PORTC bit 7 |
| Chân 44 | RD0 — PORTD bit 0 |
| Chân 45 | RD1 — PORTD bit 1 |
| Chân 46 | RD2 — PORTD bit 2 |
| Chân 47 | RD3 — PORTD bit 3 |
| Chân 48 | RD4 — PORTD bit 4 |
| Chân 49 | RD5 — PORTD bit 5 |
| Chân 50 | RD6 — PORTD bit 6 |
| Chân 51 | RD7 — PORTD bit 7 |
| Chân 52 | RE0 — PORTE bit 0 |
| Chân 53 | RE1 — PORTE bit 1 |
| Chân 54 | RE2 — PORTE bit 2 |
| Chân 55 | COM3 — LCD Common 3 driver |
| Chân 56 | COM2 — LCD Common 2 driver |
| Chân 57 | COM1 — LCD Common 1 driver |
| Chân 58 | COM0 — LCD Common 0 driver |
| Chân 59 | SEG31 — LCD Segment 31 driver |
| Chân 60 | SEG30 — LCD Segment 30 driver |
| Chân 61 | SEG29 — LCD Segment 29 driver |
| Chân 62 | SEG28 — LCD Segment 28 driver |
| Chân 63 | SEG27 — LCD Segment 27 driver |
| Chân 64 | SEG26 — LCD Segment 26 driver |
| Chân 65 | SEG25 — LCD Segment 25 driver |
| Chân 66 | SEG24 — LCD Segment 24 driver |
| Chân 67 | SEG23 — LCD Segment 23 driver |
| Chân 68 | SEG22 — LCD Segment 22 driver |
Ứng dụng tiêu biểu
PIC16C926-I/L phù hợp cho 6 Áp dụngs: Industrial Control Panel with LCD Readout, Medical Instrument Front Panel, Appliance User Interface, Metering and Measurement Equipment, Point-of-Sale Terminal Keypad/Display Module, Automotive Dashboard Sub-Display.
Industrial Control Panel with LCD Readout
The PIC16C926-I/L is ideally suited to industrial control panels because its integrated 32-segment x 4-common LCD driver directly drives segmented character displays without any external LCD controller. The 5-channel 10-bit ADC handles analog sensor inputs such as 4-20 mA loop receivers, thermocouple amplifiers, or potentiometer setpoints. With 52 I/O pins, the MCU reads keypad matrices, drives status LEDs, and switches relay outputs in parallel with refreshing the LCD, all within a 200 ns instruction cycle at 20 MHz. Industrial designers should add external TVS protection on ADC inputs and use the OTP memory advantage: lower per-unit cost in mature production runs where firmware is locked.
Được đề xuất
Medical Instrument Front Panel
Medical instruments such as blood-pressure monitors, glucometers, and infusion pumps benefit from the PIC16C926-I/L's integrated LCD driver, which displays numeric readings and status icons on a low-power segmented glass. The 10-bit ADC with 5 channels digitizes pressure sensors, temperature probes, and battery voltage with adequate resolution for clinical-grade equipment. The 20 MHz clock supports responsive keypad debounce and real-time clock updates. For medical designs, plan for the OTP memory constraint by completing full firmware validation and regulatory testing before programming; consider the PIC16F926 family for pre-production clinical trials where firmware revisions may be required.
Được đề xuất
Appliance User Interface
White-goods and small appliances such as washing machines, microwave ovens, and coffee makers leverage the PIC16C926-I/L for combined user interface and motor-control supervision. The integrated LCD shows cycle status, time remaining, and error codes without a separate display driver. The 5 ADC channels read temperature sensors (NTC thermistors), water level, and motor current. With 52 I/O pins, the MCU interfaces to capacitive touch keys, encoder knobs, relay drivers, and triac-fired heater control, all within a single chip. The OTP memory and industrial temperature range make the part well-suited to high-volume appliance production where per-unit cost dominates BOM decisions.
Được đề xuất
Metering and Measurement Equipment
Electricity meters, gas meters, and water meters use the PIC16C926-I/L to combine LCD readout of consumption figures with ADC measurement of sensor signals. The 32-segment x 4-common LCD driver displays kWh, m3, or L digits with decimal points and unit icons on low-power reflective glass, ideal for battery-backed metering. The 10-bit ADC provides adequate resolution for current-sensing shunts or pulse-counting flow sensors. With 336 bytes of RAM, the MCU maintains running totals and tamper counters. Engineers should evaluate the OTP constraint carefully: once the meter's calibration constants and firmware are burned, no field updates are possible, so production calibration must be tightly controlled.
Được đề xuất
Point-of-Sale Terminal Keypad/Display Module
Point-of-sale (POS) terminals use the PIC16C926-I/L in a dedicated keypad-and-display sub-module that handles PIN entry, amount entry, and transaction confirmation before forwarding to a main processor. The integrated LCD shows prompts, the 52 I/O pins read a 4x5 keypad matrix, and the SSP port in I2C mode communicates with the main processor. The 20 MHz instruction rate ensures responsive key debounce and crisp LCD refresh. For POS designs requiring long field life, OTP memory is acceptable because firmware is stable; the part's industrial temperature rating supports deployment in retail environments with wide ambient variations.
Được đề xuất
Automotive Dashboard Sub-Display
The PIC16C926-I/L can drive secondary automotive dashboard displays showing trip-computer data, climate-control settings, or HVAC status, complementing the main instrument-cluster MCU. The 32-segment LCD driver covers icons and small numeric fields, the 5 ADC channels read temperature sensors and potentiometer positions for climate knobs, and the SPI port links to the vehicle's main communication bus. Operating from -40 C to +85 C industrial temperature range, the part tolerates cabin environments. Note that this is NOT an AEC-Q100 qualified part; for under-hood or safety-critical automotive applications, use a Microchip PIC16F or PIC18 AEC-Q100 qualified variant instead.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C926-I/L — 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/L | PIC16C925-I/L | PIC16C926T-I/L | PIC16C924-04I/L | PIC16C924/CL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same | 68-PLCC - same |
| Program Memory Type | OTP | Flash (in-system reprogrammable) | OTP | OTP | OTP | OTP (windowed for verification) |
| Program Memory Size | 14 KB (8K x 14) | 14 KB | 8 KB (-43%) | 14 KB | 4 KB (-71%) | 4 KB |
| Maximum Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz (-80%) | 4 MHz (-80%) |
| Data RAM | 336 bytes | 336 bytes | 336 bytes | 336 bytes | 192 bytes (-43%) | 192 bytes |
| Digital I/O Pins | 52 | 52 | 52 | 52 | 52 | 52 |
| LCD Driver | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com |
| Lifecycle Status | Last-time-buy | Active (recommended for new designs) | Last-time-buy | Last-time-buy | Last-time-buy | Obsolete |
Bảo phân biệt quan trọng
- Integrated 32-segment x 4-common LCD driver eliminates external LCD controller (vsPIC16F877 (no LCD driver))
- OTP memory provides lowest per-unit cost in high-volume production (vsPIC16F926-I/L (Flash-based equivalent))
- 14 KB program memory supports medium-complexity embedded firmware (vsPIC16C925-I/L (8 KB variant))
Ghi chú thiết kế
The PIC16C926-I/L uses OTP (one-time programmable) memory, so firmware must be fully validated and burned only once in production. Unlike Flash-based PIC16F variants, no field firmware updates are possible; if a bug is found after programming, the device must be scrapped. Recommendation: complete full validation cycles on PIC16F926-I/L prototypes, then port the locked firmware to PIC16C926 for cost-optimized production runs. This two-step development flow prevents costly OTP-device scrapping during firmware debug.
The 68-pin PLCC package is well-suited to socketed designs, allowing easy device replacement during prototyping and field service. Use a quality PLCC socket (e.g., 3M Textool or Aries) to avoid bent leads and contact-resistance issues. The 24.23 x 24.23 mm footprint requires careful PCB layout: route LCD segment lines on the inner layers to minimize cross-coupling, keep analog inputs (AN0-AN4) away from digital switching lines, and provide a solid ground plane under the MCU for ADC noise immunity. Decouple VDD with 100 nF ceramic + 10 uF tantalum placed within 5 mm of the VDD pin.
The PIC16C926's ADC requires a clean VDD reference for 10-bit accuracy; supply noise above 50 mVpp will degrade conversion results. Use a dedicated 10 uF + 100 nF decoupling network at the VDD pin, and consider an external ADC voltage reference (e.g., Microchip MCP1525) tied to RA3/AN3/VREF+ for applications requiring better than +/- 2 LSB absolute accuracy. The internal LCD charge pump draws brief current pulses during segment refresh - budget bulk capacitance (10-47 uF) on VDD to prevent supply sag during multiplexed LCD updates.
Thông tin tuân thủ
Lifecycle status is last-time-buy per Microchip product page. RoHS and lead-free status require lot-specific verification at ordering. Not AEC-Q100 qualified - not suitable for automotive safety-critical applications; for under-hood automotive use, choose AEC-Q100 qualified Microchip PIC16F or PIC18 variants.
