PIC16C926-I/L - 8-bit 20MHz MCU 14KB OTP LCD | Microchip
料号： PIC16C926-I/L ⚠ 最后一次采购| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.75 | $275.00 |
| 500 | $2.42 | $1,210.00 |
| 1,000 | $2.15 | $2,150.00 |
PIC16C926-I/L 概述
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.
直接替换替代料： PIC16C926-I/L ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16C926-I/L （相同外形与封装尺寸） ——差异在于 LCD Driver, Package, Program Memory Size, ADC, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC16F926-I/L
✅ 直接替换📋 参考替代料（不在目录中）
PIC16C925-I/L
✅ 直接替换✓ 有现货
$4.85 / 个
查看数据手册 →PIC16C926T-I/L
✅ 直接替换📋 参考替代料（不在目录中）
PIC16C924-04I/L
✅ 直接替换✓ 有现货
$2.85 / 个
查看数据手册 →PIC16C924/CL
✅ 直接替换✓ 有现货
$14.2 / 个
查看数据手册 →PIC16C926-I/L 最大额定值与电气特性
| 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) |
| 封装 | 68-PLCC (24.23 x 24.23 mm) |
| 工作温度 | -40 C to +85 C (Industrial, -I suffix) |
| 安装类型 | Surface Mount (PLCC socket compatible) |
PIC16C926-I/L 引脚配置
| 引脚 1 | SEG0 — LCD Segment 0 driver |
| 引脚 2 | SEG1 — LCD Segment 1 driver |
| 引脚 3 | SEG2 — LCD Segment 2 driver |
| 引脚 4 | SEG3 — LCD Segment 3 driver |
| 引脚 5 | SEG4 — LCD Segment 4 driver |
| 引脚 6 | SEG5 — LCD Segment 5 driver |
| 引脚 7 | SEG6 — LCD Segment 6 driver |
| 引脚 8 | SEG7 — LCD Segment 7 driver |
| 引脚 9 | SEG8 — LCD Segment 8 driver |
| 引脚 10 | SEG9 — LCD Segment 9 driver |
| 引脚 11 | SEG10 — LCD Segment 10 driver |
| 引脚 12 | SEG11 — LCD Segment 11 driver |
| 引脚 13 | SEG12 — LCD Segment 12 driver |
| 引脚 14 | SEG13 — LCD Segment 13 driver |
| 引脚 15 | SEG14 — LCD Segment 14 driver |
| 引脚 16 | SEG15 — LCD Segment 15 driver |
| 引脚 17 | VDD — Positive power supply |
| 引脚 18 | VSS — Ground reference |
| 引脚 19 | OSC1 — Crystal oscillator input |
| 引脚 20 | OSC2 — Crystal oscillator output |
| 引脚 21 | MCLR — Master Clear (reset) input |
| 引脚 22 | RA0/AN0 — PORTA bit 0 / ADC channel 0 |
| 引脚 23 | RA1/AN1 — PORTA bit 1 / ADC channel 1 |
| 引脚 24 | RA2/AN2 — PORTA bit 2 / ADC channel 2 |
| 引脚 25 | RA3/AN3/VREF+ — PORTA bit 3 / ADC channel 3 / ADC positive reference |
| 引脚 26 | RA4/AN4 — PORTA bit 4 / ADC channel 4 |
| 引脚 27 | RA5 — PORTA bit 5 |
| 引脚 28 | RB0/INT — PORTB bit 0 / External interrupt |
| 引脚 29 | RB1 — PORTB bit 1 |
| 引脚 30 | RB2 — PORTB bit 2 |
| 引脚 31 | RB3 — PORTB bit 3 |
| 引脚 32 | RB4 — PORTB bit 4 |
| 引脚 33 | RB5 — PORTB bit 5 |
| 引脚 34 | RB6 — PORTB bit 6 |
| 引脚 35 | RB7 — PORTB bit 7 |
| 引脚 36 | RC0 — PORTC bit 0 |
| 引脚 37 | RC1 — PORTC bit 1 |
| 引脚 38 | RC2 — PORTC bit 2 |
| 引脚 39 | RC3 — PORTC bit 3 |
| 引脚 40 | RC4 — PORTC bit 4 |
| 引脚 41 | RC5 — PORTC bit 5 |
| 引脚 42 | RC6 — PORTC bit 6 |
| 引脚 43 | RC7 — PORTC bit 7 |
| 引脚 44 | RD0 — PORTD bit 0 |
| 引脚 45 | RD1 — PORTD bit 1 |
| 引脚 46 | RD2 — PORTD bit 2 |
| 引脚 47 | RD3 — PORTD bit 3 |
| 引脚 48 | RD4 — PORTD bit 4 |
| 引脚 49 | RD5 — PORTD bit 5 |
| 引脚 50 | RD6 — PORTD bit 6 |
| 引脚 51 | RD7 — PORTD bit 7 |
| 引脚 52 | RE0 — PORTE bit 0 |
| 引脚 53 | RE1 — PORTE bit 1 |
| 引脚 54 | RE2 — PORTE bit 2 |
| 引脚 55 | COM3 — LCD Common 3 driver |
| 引脚 56 | COM2 — LCD Common 2 driver |
| 引脚 57 | COM1 — LCD Common 1 driver |
| 引脚 58 | COM0 — LCD Common 0 driver |
| 引脚 59 | SEG31 — LCD Segment 31 driver |
| 引脚 60 | SEG30 — LCD Segment 30 driver |
| 引脚 61 | SEG29 — LCD Segment 29 driver |
| 引脚 62 | SEG28 — LCD Segment 28 driver |
| 引脚 63 | SEG27 — LCD Segment 27 driver |
| 引脚 64 | SEG26 — LCD Segment 26 driver |
| 引脚 65 | SEG25 — LCD Segment 25 driver |
| 引脚 66 | SEG24 — LCD Segment 24 driver |
| 引脚 67 | SEG23 — LCD Segment 23 driver |
| 引脚 68 | SEG22 — LCD Segment 22 driver |
典型应用
PIC16C926-I/L 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC16C926-I/L ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated 32-segment x 4-common LCD driver eliminates external LCD controller （对比 PIC16F877 (no LCD driver))
- OTP memory provides lowest per-unit cost in high-volume production （对比 PIC16F926-I/L (Flash-based equivalent))
- 14 KB program memory supports medium-complexity embedded firmware （对比 PIC16C925-I/L (8 KB variant))
设计说明
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.
合规信息
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.
