PIC17LC752T-08/L - 8-Bit 8MHz 16KB OTP MCU 68-PLCC | Microchip
MPN： PIC17LC752T-08/L ✓ 啟用中PIC17LC752T-08/L 概覽
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and configurable I/O peripherals on one silicon die. Within the broader taxonomy, 8-bit MCUs sit below 16-bit and 32-bit microcontrollers in arithmetic width but above pure logic ICs in computational capability, and the PIC17 family historically represented Microchip's highest-performance 8-bit architecture with a RISC-style Harvard core, 16-bit-wide instruction bus, and 58 single-word instructions (121 ns execution at 8MHz). PIC17 was the first PIC family to feature a Multiply instruction (8x8 hardware multiplier in one cycle), a hardware stack deeper than 16 levels, and an internal bus architecture designed to compete with mid-range 16-bit controllers of its era.
Key features of the PIC17LC752T-08/L include 8MHz core clock, 16KB OTP program memory organized as 8K x 16 instruction words, 678 bytes of data RAM, 33 digital I/O lines, three on-board communication peripherals (I2C, SPI, UART/USART), and a wide 2.5V to 5.5V operating range that supports both 3.3V and 5V system designs. The 'LC' suffix indicates the low-voltage CMOS variant optimized for lower power consumption than the standard PIC17C parts, while the 'T' suffix denotes tape-and-reel packaging for high-volume SMT assembly.
Architecturally, the PIC17LC752T-08/L uses a Harvard memory architecture with separate program and data buses, allowing simultaneous instruction fetch and data access. The 16-bit instruction word delivers 58 single-cycle instructions (121 ns at 8 MHz), with only program branches and table reads/writes requiring two cycles. An integrated 8x8 hardware multiplier accelerates arithmetic operations, and the device includes multiple interrupt sources, a watchdog timer, and power-saving Sleep mode.
Typical applications for this legacy OTP MCU include industrial control subsystems, motor control front-ends, sensor signal processing, automotive body electronics (non-safety-critical), embedded communication bridges, and consumer appliances where 16KB of firmware and 50 I/O pins are sufficient. The 3.3V/5V dual-voltage capability makes it well-suited as a bridge controller in mixed-voltage designs.
A critical design consideration when using the PIC17LC752T-08/L is that OTP memory cannot be erased or rewritten, so firmware must be fully validated on UV-erasable windowed samples (PIC17LC752-08/L in ceramic CERDIP) before committing to OTP production. Engineers should also evaluate whether a modern PIC18 or dsPIC33 equivalent (already represented in the Site MPN list) offers better long-term availability and active development tools.
This page synthesizes distributor pricing, parametric cross-references, and design notes for engineers evaluating the PIC17LC752T-08/L as either a new design component or a drop-in replacement for an obsolete socket.
直接替換替代品，適用於 PIC17LC752T-08/L — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC17LC752T-08/L （相同外形與佔位） — 差異在於 Data Bus Width, Package, Operating Temperature, Program Memory Size, Mounting Type.
PIC17LC752-08/L
✅ 直接替換聯絡詢價
查看資料表 →PIC17LC752T-08/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC17C752-16/L
✅ 直接替換聯絡詢價
查看資料表 →PIC17C752-16E/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC17C752-33/L
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC17C752-33E/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC17LC752T-08/L 最大額定值與電氣特性
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Family | PIC17C |
| 資料匯流排寬度 | 8 bit |
| Instruction Bus Width | 16 bit |
| 最大時脈頻率 | 8 MHz |
| Program Memory Size | 16 KB (8K x 16) |
| Program Memory Type | OTP (One-Time Programmable) |
| Data RAM | 678 bytes |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 33 (per digchip); 50 (per microchipusa) |
| Package Type | 68-PLCC (J-Lead, 24.23x24.23 mm) |
| 安裝類型 | Surface Mount |
| Communication Interfaces | I2C, SPI, UART/USART |
| Instruction Set | 58 single-word instructions |
| Instruction Execution Time | 121 ns (single cycle at 8 MHz) |
| 工作溫度範圍 | 0C to +70C (commercial, /L = PLCC) |
| 生命週期狀態 | Active (per digchip datasheet page) |
| RoHS 狀態 | Compliant |
| Packaging Format | Tape and Reel (T suffix) |
PIC17LC752T-08/L 68-plcc (j-lead, 24.23x24.23 mm) 腳位配置指南
PIC17LC752T-08/L（68-plcc (j-lead, 24.23x24.23 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： PIC17LC752T-08/L.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC17LC752T-08/L 適用於 6 應用s: Industrial Control Subsystems, Motor Control Front-Ends, Sensor Signal Processing Hubs, Automotive Body Electronics, Embedded Communication Bridges, Consumer Appliance Controllers.
Industrial Control Subsystems
The PIC17LC752T-08/L fits industrial control subsystems where deterministic 8-bit processing and 33 GPIO pins are sufficient for PLC I/O expansion, sensor multiplexing, and relay driving. The 16KB OTP program memory holds typical ladder-logic interpreters or PID control firmware, and the 8MHz core provides 121 ns instruction execution - fast enough for 1 kHz control loops. Its 2.5V-5.5V supply range accepts both legacy 5V PLC backplanes and modern 3.3V logic levels without level shifters. The I2C/SPI/UART peripherals connect to digital sensors, HMI displays, and upstream controllers.
推薦
Motor Control Front-Ends
The PIC17LC752T-08/L serves as a motor-control front-end for low to mid-power DC and stepper motor drives where 16KB of firmware is sufficient for trapezoidal commutation, current limiting, and fault handling. The 8MHz core with 8x8 hardware multiplier accelerates PI loop calculations at PWM rates up to 20 kHz. Its 33 GPIO lines interface with Hall-effect sensors, encoder feedback, gate drivers, and protection circuitry. Designers should verify PWM resolution and ADC sampling rate against the specific motor-control algorithm before selecting this part for new designs.
推薦
Sensor Signal Processing Hubs
The PIC17LC752T-08/L acts as a sensor signal-processing hub in multi-sensor systems, aggregating data from I2C temperature sensors, SPI ADCs, and UART GPS modules into a single output stream. The 678 bytes of RAM buffer incoming sensor frames while the 16KB OTP holds the parsing and threshold-detection firmware. The wide 2.5V-5.5V supply accommodates battery-powered sensor nodes down to 2x AA cells as well as regulated 5V rails. For low-power sensor hubs, evaluate PIC16LF or PIC24F variants instead - the PIC17 lacks nanoWatt Sleep modes.
推薦
Automotive Body Electronics
The PIC17LC752T-08/L is suitable for non-safety automotive body-electronics modules like seat controllers, mirror adjusters, and interior lighting, where 50 I/O pins drive relays, MOSFETs, and LED strings. The 2.5V-5.5V range tolerates automotive 12V battery transients when paired with a TVS-protected 5V regulator. Note that this part is NOT AEC-Q100 qualified - for safety-critical body controllers, migrate to AEC-Q100 qualified dsPIC33 or PIC18K families. The OTP memory means firmware calibration must happen at the factory for each variant.
推薦
Embedded Communication Bridges
The PIC17LC752T-08/L functions as a protocol-conversion bridge between UART, SPI, and I2C networks in industrial and embedded systems. With three independent hardware peripherals and 16KB of firmware, it can implement Modbus RTU to I2C sensor conversion, SPI-to-UART gateway functions, or custom legacy-protocol bridges. The 8MHz core supports 115200 baud UART comfortably with overhead for protocol parsing. For new designs, the PIC18F series offers more peripherals and DMA, but for legacy board repairs the PIC17 LC remains the supported drop-in.
推薦
Consumer Appliance Controllers
The PIC17LC752T-08/L is appropriate for consumer appliance controllers in washing machines, dishwashers, and microwave ovens where 33 I/O lines drive user interfaces, sensors, and triac-based power control. The wide 2.5V-5.5V supply supports both 3.3V logic panels and 5V relay drivers. The OTP memory locks in the production firmware permanently, which is desirable for high-volume consumer products to prevent post-sale firmware tampering. Note that for new appliance designs, Microchip recommends PIC18F and dsPIC33 families for better long-term availability.
推薦
推薦產品摘要
工程參考資料，適用於 PIC17LC752T-08/L — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC17LC752-08/L | PIC17C752-16/L | PIC17C752-33/L |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same |
| Maximum Clock | 8 MHz | 8 MHz | 16 MHz | 33 MHz |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB EPROM | 16 KB EPROM |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| I/O Pins | 33 | 33 | 33 | 33 |
| Communication Peripherals | I2C, SPI, UART | I2C, SPI, UART | I2C, SPI, UART | I2C, SPI, UART |
| RAM | 678 bytes | 678 bytes | 678 bytes | 678 bytes |
| Lifecycle Status | Active (mature) | Active (mature) | Active (mature) | Active (mature) |
主要差異化特點
- Wide 2.5V-5.5V supply range unique among PIC17 variants (對比PIC17C752-16/L)
- Tape-and-reel packaging for high-volume SMT assembly (對比PIC17LC752-08/L (tube))
- Lower-power CMOS process versus PIC17C EPROM parts (對比PIC17C752-16/L)
設計說明
OTP memory in the PIC17LC752T-08/L cannot be erased or rewritten once programmed. Engineers must validate all firmware on a UV-erasable CERDIP windowed sample (PIC17LC752-08/L in CERDIP package) before committing to OTP production. A single firmware bug in OTP requires scrapping the entire batch of programmed parts. Allocate engineering time for full firmware validation, including interrupt edge cases and watchdog timer behavior, before any OTP programming run.
The LC variant supports 2.5V-5.5V but verify ADC and Brown-Out Reset (BOR) voltage thresholds against your specific application. Per Microchip datasheet DS30261, the BOR trip voltage is fixed at approximately 4.0V for LC variants; designs running at 3.3V nominal should confirm BOR behavior at the lower end. Add a 100 nF ceramic decoupling capacitor within 5 mm of each VDD/VSS pin pair, plus a 10 uF bulk capacitor at the package entry.
The 68-PLCC J-lead package requires careful PCB layout: pad dimensions must match the J-lead foot print per IPC-7351 with sufficient solder fillet area. PLCC sockets (e.g., 68-pin production sockets from 3M/Augat) are commonly used for field-replaceable designs, which is recommended for industrial applications where OTP replacement requires physical part swap. Ensure 0.1 inch (2.54 mm) grid alignment if using through-hole socket adapters.
Place the 8 MHz crystal or resonator within 10 mm of the OSC1/OSC2 pins, with the load capacitors (typically 15-33 pF) grounded to the same VSS island as the MCU. For high-noise industrial environments, use a 4-layer PCB with a dedicated ground plane beneath the MCU; the PIC17LC752 is less noise-tolerant than modern ARM Cortex-M0 parts. Keep switching power supply traces at least 20 mm away from the analog AVdd/AVss pins if used.
合規資訊
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified - this part is intended for industrial and consumer applications, not automotive safety-critical. For automotive body controllers, use AEC-Q100 qualified dsPIC33 variants instead.
