PIC16LC66-04/SP - 8-bit 4MHz 14KB OTP MCU 28-SPDIP | Microchip
部品番号: PIC16LC66-04/SP ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.55 | $75.50 |
| 100 | $6.71 | $671.00 |
| 500 | $6.02 | $3,010.00 |
| 1,000 | $5.38 | $5,380.00 |
PIC16LC66-04/SP 概要
An OTP microcontroller is a non-volatile program memory device that is electrically programmable once by the user in-system or with a device programmer, then behaves like a mask-ROM part in production. The PIC16LC66 belongs to Microchip's PIC16C6X mid-range family - a category of low-cost, high-performance, fully-static 8-bit RISC microcontrollers offering only 35 single-word instructions to learn and single-cycle instruction execution for most opcodes (program branches take two cycles), making them well-suited for industrial control and automation.
Key features include 4 MHz maximum operating frequency, 2.5 V to 5.5 V supply voltage range, 22 I/O pins, an 8-bit timer/counter with 8-bit prescaler (Timer0), a 16-bit timer/counter with prescaler (Timer1) that can be incremented during sleep via external crystal or clock, and an 8-bit Timer2. The /SP suffix denotes the 28-pin SPDIP through-hole package (0.300 inch / 7.62 mm row spacing), which is preferred for prototyping, hobbyist projects, and designs requiring easy user-replaceable ICs.
The PIC16LC66-04 uses the proven PIC16C RISC architecture with a Harvard-style program/data bus split, enabling deterministic instruction timing. The 'LC' prefix denotes the low-power commercial variant (0C to +70C operating range), while the '-04' suffix specifies the 4 MHz speed grade and '/SP' identifies the 28-pin skinny DIP package. Watchdog timer, power-on reset, and brown-out detection are typical in-family features for this core.
Typical applications include small appliance control, sensor interface boards, simple motor drivers, automotive body electronics (non-safety), LED display controllers, and consumer white-goods. The wide 2.5 V to 5.5 V supply range also makes the part friendly to battery-powered or unregulated-rail designs.
When designing with this part, note that OTP parts cannot be reprogrammed; verify firmware with a windowed CERDIP (JW) or compatible emulator before committing to the OTP SPDIP for production. Reserve at least one I/O pin for in-circuit serial programming (ICSP) if field firmware updates may be required.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical SPDIP design notes not found in the Microchip datasheet alone.
ドロップイン代替品: PIC16LC66-04/SP — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC16LC66-04/SP （同一形状・フットプリント） — 相違点: Mounting Type, Program Memory Size, Program Memory Type, Operating Temperature Range, Package.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16LC66-04I/SP
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$3.65 / 個
データシートを見る →PIC16C66-04/SP
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16F876A-I/SP
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16F76-I/SP
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16LC66-04/SP 最大定格＆電気的特性
| Product Family | PIC16C6X mid-range |
| Core | PIC16C 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 14 KB (8K x 14 words) |
| RAM Size | 368 bytes |
| Maximum Clock Speed | 4 MHz |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Number of I/O Pins | 22 |
| パッケージ | 28-SPDIP (Skinny DIP, 0.300 in / 7.62 mm) |
| 動作温度範囲 | 0C to +70C |
| Timer Modules | Timer0 (8-bit + 8-bit prescaler), Timer1 (16-bit + prescaler), Timer2 (8-bit) |
| Instruction Set | 35 single-word instructions |
| Architecture | Harvard, fully static CMOS |
| 実装タイプ | Through-Hole (THT) |
PIC16LC66-04/SP ピン構成
| ピン 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| ピン 2 | RA0/AN0 — PORTA bit 0 (digital I/O or analog input 0) |
| ピン 3 | RA1/AN1 — PORTA bit 1 (digital I/O or analog input 1) |
| ピン 4 | RA2/AN2 — PORTA bit 2 (digital I/O or analog input 2) |
| ピン 5 | RA3/AN3/VREF — PORTA bit 3 (digital I/O, analog input 3, or VREF) |
| ピン 6 | RA4/T0CKI — PORTA bit 4 (digital I/O or Timer0 clock input) |
| ピン 7 | RA5/SS/AN4 — PORTA bit 5 (digital I/O, SPI slave select, or analog input 4) |
| ピン 8 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| ピン 9 | OSC2/CLKOUT — Crystal oscillator output / clock output (Fosc/4) |
| ピン 10 | RC0/T1OSO/T1CKI — PORTC bit 0 (digital I/O or Timer1 I/O) |
| ピン 11 | RC1/T1OSI/CCP2 — PORTC bit 1 (digital I/O, Timer1 oscillator input, or CCP2) |
| ピン 12 | RC2/CCP1 — PORTC bit 2 (digital I/O or Capture/Compare/PWM 1) |
| ピン 13 | RC3/SCK/SCL — PORTC bit 3 (digital I/O, SPI clock, or I2C clock) |
| ピン 14 | RC4/SDI/SDA — PORTC bit 4 (digital I/O, SPI data in, or I2C data) |
| ピン 15 | RC5/SDO — PORTC bit 5 (digital I/O or SPI data out) |
| ピン 16 | RC6/TX/CK — PORTC bit 6 (digital I/O, USART TX, or clock) |
| ピン 17 | RC7/RX/DT — PORTC bit 7 (digital I/O, USART RX, or data) |
| ピン 18 | VSS — Ground reference |
| ピン 19 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
| ピン 20 | RB0/INT — PORTB bit 0 (digital I/O or external interrupt) |
| ピン 21 | RB1 — PORTB bit 1 (digital I/O) |
| ピン 22 | RB2 — PORTB bit 2 (digital I/O) |
| ピン 23 | RB3/PGM — PORTB bit 3 (digital I/O or low-voltage programming) |
| ピン 24 | RB4 — PORTB bit 4 (digital I/O) |
| ピン 25 | RB5 — PORTB bit 5 (digital I/O) |
| ピン 26 | RB6/PGC — PORTB bit 6 (digital I/O or ICSP clock) |
| ピン 27 | RB7/PGD — PORTB bit 7 (digital I/O or ICSP data) |
| ピン 28 | VSS — Ground reference (secondary) |
主な用途
PIC16LC66-04/SP の用途: 6 件s: Small Appliance Control, Industrial Sensor Interface Board, Simple Stepper / DC Motor Driver, Consumer White Goods Controller, LED Display and Sign Controller, Educational and Hobbyist Development.
Small Appliance Control
The PIC16LC66-04/SP's 14 KB OTP program memory and 22 digital I/O lines make it well suited for small appliance controllers such as coffee makers, blenders, and toasters. The wide 2.5 V to 5.5 V supply range accommodates unregulated rectified AC rails stepped down to a regulated DC level, eliminating the need for an additional pre-regulator. Its 4 MHz clock is sufficient to scan a 4x4 keypad matrix, drive a character LCD, and toggle TRIAC-control optocouplers within typical 10 ms debounce windows. The 368 bytes of RAM comfortably hold keypad buffers, timer tick counters, and the active-mode appliance state machine. Compared with newer ARM-based MCUs, the PIC16LC66-04/SP is preferred here for BOM cost minimization at high volume and for its 35-instruction RISC core that compiles to predictable cycle counts.
おすすめ
Industrial Sensor Interface Board
The PIC16LC66-04/SP serves as a low-cost bridge between industrial sensors (4-20 mA loops, NTC thermistors, mechanical switches) and a host PLC or display. Its 22 I/O pins can be split between analog sensor input conditioning (with external op-amp buffers), digital inputs, and isolated outputs to the host. The PIC16C6X mid-range core executes conditional branches in 2 cycles, allowing deterministic scanning of multiple sensor channels within a 10 ms scan budget at 4 MHz. The commercial 0C to +70C operating range covers most factory-floor enclosures. For harsh industrial environments, the industrial-temperature variant PIC16LC66-04I/SP should be qualified. Designers can leverage the PIC16C6X Timer1 sleep-mode external crystal increment feature for ultra-low-power periodic wake-and-measure cycles on battery-powered remote sensor nodes.
おすすめ
Simple Stepper / DC Motor Driver
With three timer modules and 22 I/O pins, the PIC16LC66-04/SP can drive a unipolar stepper motor in full-step or half-step sequences using four general-purpose outputs, or a brushed DC motor with PWM from Timer2 and a direction-control GPIO. The 4 MHz clock yields a 1 us instruction cycle, supporting up to 500 kHz PWM resolution when prescaled appropriately - sufficient for low-RPM motor control and audible-noise-free operation above 20 kHz. The OTP memory locks the motor-control algorithm in production, preventing accidental firmware corruption in the field. Engineers commonly pair the PIC16LC66-04/SP with external H-bridge drivers such as the L293D or the DRV8871, which accept 3.3 V or 5 V logic-level inputs from the MCU. The 28-SPDIP package is preferred for motor-drive prototypes because the through-hole leads survive vibration better than fine-pitch SMD packages.
おすすめ
Consumer White Goods Controller
The PIC16LC66-04/SP is a natural fit for washing machines, dishwashers, and microwave oven controllers where a fixed-function MCU is preferred over reprogrammable flash to lock down safety-critical behavior. Its 14 KB OTP holds the full state-machine plus diagnostics, while the 22 I/O lines interface with rotary encoder inputs, seven-segment displays, buzzer drivers, and TRIAC-fired heater or pump relays. The 2.5 V to 5.5 V operating range tolerates brown-out conditions during motor inrush, and the 4 MHz speed provides enough MIPS for keypad scanning and load timing without generating EMI that interferes with the appliance's power-line communication. Compared with newer PIC18 or PIC24 parts, the PIC16LC66-04/SP keeps BOM cost below 1.50 USD at production volumes, which is critical in the white-goods market.
おすすめ
LED Display and Sign Controller
The PIC16LC66-04/SP can multiplex up to an 8-digit seven-segment LED display by using Timer0 for the multiplex tick and the 22 I/O lines for segment and digit drives via external transistors. At 4 MHz instruction rate, the multiplex refresh comfortably exceeds 100 Hz per digit, eliminating visible flicker. The 14 KB OTP stores fixed character fonts and lookup tables for clock, temperature, or simple message displays. The wide 2.5 V to 5.5 V supply range allows direct operation from a USB-derived 5 V rail or a 3-cell NiMH battery pack. For brightness control, Timer2's PWM output modulates the common-anode or common-cathode transistor base, supporting software-dimmed displays without external DAC chips.
おすすめ
Educational and Hobbyist Development
The PIC16LC66-04/SP's 28-SPDIP through-hole package is widely adopted in university embedded systems curricula and hobbyist projects because the 0.1 inch pin pitch fits standard breadboards and perfboards without adapters. Its 35-instruction RISC core is documented in hundreds of free Microchip application notes and is the de-facto reference architecture for teaching assembly-level embedded programming. The OTP memory is a pedagogical feature: students learn that the firmware they upload is permanent, encouraging disciplined code review before programming. For coursework that demands re-programmability, instructors typically provide a parallel PIC16F876A-I/SP on the same development board, with the OTP PIC16LC66-04/SP reserved for final project submissions.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC16LC66-04/SP — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC16LC66-04/SO | PIC16LC66-04I/SP | PIC16C66-04/SP | PIC16LC65A-04I/P | PIC16F876A-I/SP | PIC16F76-I/SP |
|---|---|---|---|---|---|---|---|
| Package | 28-SPDIP (SP) | 28-SOIC (SO) - surface-mount | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | 28-PDIP (P, 600 mil) - wider footprint | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (14 KB) | OTP (14 KB) | OTP (14 KB) | OTP (14 KB) | OTP (7 KB) | Flash (14 KB) | Flash (14 KB) |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 4.5 V to 5.5 V | 2.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| RAM Size | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 192 bytes | 368 bytes | 368 bytes |
| Operating Temperature Range | 0C to +70C | 0C to +70C | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C | -40C to +85C |
| Integrated ADC | No (external required) | No | No | No | No | Yes, 10-bit / 8 channels | Yes, 8-bit / 5 channels |
主な差別化要因
- Same-family OTP alternatives with identical die （vs PIC16LC66-04I/SP)
- Flash-based pin-to-pin upgrade path （vs PIC16F876A-I/SP)
- Surface-mount migration with same die （vs PIC16LC66-04/SO)
設計ノート
The /SP package is through-hole SPDIP (0.300 inch row spacing), not the wider 0.600 inch PDIP (/P) variant. Verify the PCB land pattern or IC socket matches the 0.300 inch pitch before ordering sockets or designing the layout. A common mistake is to design a PCB for the wider 600-mil PDIP and then attempt to insert the 300-mil SPDIP - the legs will not seat. The PIC16LC65A-04I/P is in the wider PDIP and is NOT drop-in for the /SP footprint.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 20) and a bulk 10 uF electrolytic or tantalum capacitor on the same supply rail within 25 mm. For OTP programming via ICSP, dedicate RB6 (PGC, pin 26) and RB7 (PGD, pin 27) to the programming header and add series resistors (typically 10 kohm) if the pins are shared with user circuitry. Do not place large capacitive loads (>50 pF) directly on the PGD line, as they slow the programming rise/fall time and may cause verification errors.
The PIC16LC66-04/SP supports 2.5 V to 5.5 V operation, but at the lower end of the range the 4 MHz oscillator accuracy degrades and the brown-out reset (BOR) trip voltage rises as a percentage of VDD. For reliable operation across the full -40C to +85C industrial range, design the power supply for at least 3.0 V nominal. When migrating firmware from a PIC16C66 (4.5 V to 5.5 V) to the PIC16LC66, re-validate any code that depends on ADC reference voltage or on internal bandgap behavior, as these parameters shift with VDD.
Estimated: at 4 MHz clock, 5 V supply, and typical 5 mA active current, the PIC16LC66-04/SP dissipates approximately 25 mW (P = V x I). The 28-SPDIP package has a theta_JA of approximately 70 C/W, yielding a junction temperature rise of about 1.75 C above ambient - well within safe limits. No thermal management is required for typical embedded control applications. If the design switches all 22 I/O lines at maximum toggle rate into heavy capacitive loads, revisit this estimate.
コンプライアンス情報
RoHS, REACH, lead-free, and halogen-free status for the PIC16LC66-04/SP is not stated in the verified web data and must be confirmed against Microchip's latest product declaration. The PIC16LC66 family is a legacy OTP product line; many legacy SPDIP parts use lead-bearing finishes.
