PIC17C752-16/L - 8-bit 16MHz 16KB OTP MCU 50 I/O | Microchip
MPN： PIC17C752-16/L ✗ 停產PIC17C752-16/L 概覽
An 8-bit microcontroller (MCU) is a small computer-on-a-chip that combines a CPU, RAM, non-volatile program memory and peripheral I/O on a single die. PIC microcontrollers use a Harvard RISC architecture - separate program and data buses and a fixed instruction set - which lets them complete most instructions in one clock cycle, making them well-suited to deterministic embedded control. Within the broader taxonomy they sit under microcontrollers -> microcomputer -> embedded processor -> semiconductor. The PIC17C family is the highest-performance 8-bit branch of the PIC family tree, intended as a stepping stone before migrating to PIC18 or dsPIC parts.
Key features of the PIC17C752-16/L include an 8-level hardware stack, programmable code protection, power-on reset, brown-out reset, watchdog timer with its own on-chip RC oscillator, a hardware single-cycle 8x8 multiplier, and a versatile 16-bit timer/counter. Its 50 I/O lines can each be independently configured as input or output, and several peripheral functions (USART, SPI, I2C, capture/compare/PWM) are multiplexed onto those pins. Internal non-volatile program memory is OTP EPROM, suitable for low-volume production runs and for code that is rarely updated in the field.
Typical applications include industrial control front-ends, sensor signal conditioning hubs, automotive body and chassis modules, instrumentation, point-of-sale terminals, motor control boards, and legacy embedded designs that need to remain on the original 8-bit PIC toolchain. The 50 I/O count and 16 MHz clock are ample for keypad scanning, LCD driving, UART-based device networking and simple PID loops without requiring an external DSP or 32-bit core.
Designers should note that the PIC17C752 has been formally migrated by Microchip to the PIC18F6520, which offers Flash memory, a richer peripheral set and a familiar pin-compatible upgrade path. For new designs Microchip recommends the PIC18F6520; PIC17C752-16/L is appropriate for maintaining and replicating existing production hardware where the original PIC17 toolchain, code base, and OTP behavior must be preserved.
直接替換替代品，適用於 PIC17C752-16/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： PIC17C752-16/L （相同外形與佔位） — 差異在於 Package, Operating Temperature, Data Bus Width, Core Architecture, Program Memory Size.
PIC17C752-16I/L
✅ 直接替換聯絡詢價
查看資料表 →PIC17C756-16/L
✅ 直接替換📋 參考替代品（不在目錄中）
PIC17C752T-16I/L
✅ 直接替換聯絡詢價
查看資料表 →PIC18F6520-I/L
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18F6720-I/L
✅ 直接替換📋 參考替代品（不在目錄中）
PIC17C752-16/L 最大額定值與電氣特性
| Architecture | PIC 8-bit RISC (Harvard) |
| Core | PIC17 |
| Family | PIC® 17C |
| Program Memory Size | 16 KB (8K x 16) OTP EPROM |
| RAM Size | 678 bytes |
| CPU Speed | 16 MHz (33 MHz clock input max) |
| Instruction Cycle | 121 ns (single cycle for most instructions) |
| MIPS | 8.25 MIPS |
| Number of I/O | 50 |
| 供應電壓 | 4.5 V to 5.5 V |
| 資料匯流排寬度 | 16-bit external / 8-bit internal |
| 封裝 | 68-pin PLCC (J-Lead), 24.23 x 24.23 mm |
| 安裝類型 | Surface Mount |
| 工作溫度 | 0C to +70C (commercial) |
| Instruction Set | 58 single-word instructions |
| Hardware Multiplier | 8 x 8, single cycle |
| Hardware Stack | 16 levels |
| ROM Type | OTP (One-Time-Programmable) |
| Recommended Replacement | PIC18F6520 (per Microchip) |
| RoHS 狀態 | Non-RoHS (OTP windowed family) |
PIC17C752-16/L 68-pin plcc (j-lead), 24.23 x 24.23 mm 腳位配置指南
PIC17C752-16/L（68-pin plcc (j-lead), 24.23 x 24.23 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： PIC17C752-16/L.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC17C752-16/L 適用於 6 應用s: Industrial Control Front-End, Automotive Body and Chassis Modules, Instrumentation and Data Acquisition, Point-of-Sale Terminals, Motor Control and PWM Drive, Sensor Hubs and IoT Edge Nodes.
Industrial Control Front-End
The PIC17C752-16/L fits industrial control front-ends because its 50 digital I/O lines can simultaneously scan keypads, drive multiplexed 7-segment or character LCDs, and read banks of optocoupler-isolated 24V inputs. The 8.25 MIPS throughput handles deterministic PID loops at sub-millisecond rates while the 16 KB OTP holds fixed ladder-replacement or sequencing firmware. Running from a 5 V rail, the part is paired with external RS-485 transceivers to network PLC-style I/O racks; the built-in hardware USART simplifies protocol framing. Designers should follow Microchip's decoupling guidance (100 nF + 10 uF near VDD) and isolate MCLR with the recommended resistor/capacitor network for brown-out resilience.
推薦
Automotive Body and Chassis Modules
Inside body-control modules (window lifters, seat controllers, mirror adjusters) the PIC17C752-16/L offers 50 I/O sufficient for H-bridge PWM, switch-matrix scanning and LIN/CAN bridging via the on-chip USART. Its 16 MHz core sustains 8.25 MIPS, enough to debounce switches, run lamp-out diagnostics and supervise load current via external sense amplifiers. For underhood or exterior modules the -16I/L variant extends to -40C to +85C. Engineers typically pair the MCU with a TJA1050 CAN transceiver and use the hardware capture module for crank-sensor timing in entry-level ECU boards. Watchdog and brown-out reset on-chip reduce the external component count versus discrete 8051 designs.
推薦
Instrumentation and Data Acquisition
Bench-top multimeters, process calibrators and laboratory data loggers benefit from the PIC17C752-16/L's single-cycle 8 x 8 hardware multiplier, which speeds RMS and moving-average calculations on buffered ADC streams. The 50 I/O bank multiplexes LCD segments, keypads and serial ports (USART/SPI/I2C), while the 16 KB OTP accommodates lookup tables for thermocouple linearization and range scaling. The 4.5-5.5 V supply rails match precision 5V op-amps such as the OPA2277 front-end. With a 121 ns instruction cycle the firmware can sustain >10 ksample/s aggregate throughput when paired with an external 12- or 16-bit ADC like the ADS7818.
推薦
Point-of-Sale Terminals
Legacy POS terminals and electronic cash registers use the PIC17C752-16/L to drive 4 x 4 keypads, character LCDs, mag-stripe readers, and serial receipt printers. The 50 I/O lines comfortably host all of these simultaneously, while the on-chip USART handles printer and host traffic without an external UART. The 16 KB OTP stores tax tables, PLU lookups and transaction logging routines, and the 678-byte RAM keeps temporary buffers for line-item totals. The 5 V supply rail aligns with legacy POS peripheral interfaces, and the PLCC-68 package fits the standard POS motherboard outline used since the late 1990s.
推薦
Motor Control and PWM Drive
Brushless DC, stepper and small AC induction motor controllers up to a few hundred watts can be built around the PIC17C752-16/L using its capture/compare/PWM modules to generate center-aligned switching waveforms. The 8.25 MIPS core sustains field-oriented-control loops at 10-20 kHz switching frequency when paired with external gate drivers, and the 50 I/O provide commutation-sensor inputs and fault-interrupt lines. The hardware 16-level stack simplifies interrupt-driven control law execution, while brown-out reset protects the MCU during inverter bus dips. Designers should add TVS diodes and isolated gate drivers (e.g., IR2104) for production robustness.
推薦
Sensor Hubs and IoT Edge Nodes
Wired sensor hubs for building automation, HVAC and security panels deploy the PIC17C752-16/L to aggregate inputs from SPI temperature, I2C pressure and UART-modbus remote sensors. With 50 I/O the MCU can address dozens of end-devices through multiplexed buses, and the 16 KB OTP holds protocol stacks (Modbus RTU, BACnet MS/TP) and device descriptors. The on-chip hardware multiplier accelerates engineering-unit conversion and CRC-16 checksums on the serial link. A 5 V RS-485 transceiver bridges to the building backbone, and the brown-out reset plus watchdog timer sustain long-term unattended operation in plant-room environments.
推薦
推薦產品摘要
工程參考資料，適用於 PIC17C752-16/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 | PIC17C752-16I/L | PIC17C756-16/L | PIC17C752T-16I/L | PIC18F6520-I/L | PIC18F6720-I/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-pin PLCC (J-Lead) | 68-pin PLCC (J-Lead) - same | 68-pin PLCC (J-Lead) - same | 68-pin PLCC (J-Lead) - same | 68-pin PLCC (J-Lead) - same | 68-pin PLCC (J-Lead) - same |
| Core | PIC17C 8-bit | PIC17C 8-bit | PIC17C 8-bit | PIC17C 8-bit | PIC18F 8-bit | PIC18F 8-bit |
| Program Memory | 16 KB OTP EPROM | 16 KB OTP | 32 KB OTP | 16 KB OTP | 32 KB Flash | 128 KB Flash |
| RAM | 678 bytes | 678 bytes | 902 bytes | 678 bytes | 2048 bytes | 3840 bytes |
| CPU Speed | 16 MHz (8.25 MIPS) | 16 MHz | 16 MHz | 16 MHz | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| I/O Pins | 50 | 50 | 50 | 50 | 52 | 52 |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Operating Temperature | 0C to +70C | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C | -40C to +85C |
主要差異化特點
- Highest-throughput 8-bit PIC before PIC18 migration (對比PIC16CXX family)
- Drop-in industrial-temperature upgrade in the same 68-PLCC package (對比PIC17C752-16/L (standard) vs PIC17C752-16I/L (industrial))
- Flash-based recommended replacement on the same footprint (對比PIC18F6520-I/L)
設計說明
The PIC17C752-16/L operates from 4.5 V to 5.5 V and requires bulk decoupling as close to VDD/VSS pins as possible. Place one 100 nF ceramic + one 10 uF tantalum or ceramic directly on the device supply pins; if AVdd is brought out separately, add an additional 100 nF + 10 uF pair on the analog rail. Avoid long power traces, which add inductive droop during 50 I/O simultaneous switching events. Brown-out reset must be enabled in the configuration bits for any deployment where the 5 V rail can dip on motor stall or relay activation.
Watch for the MCLR pin: leaving it floating or tying it directly to VDD defeats the reset function and prevents in-circuit programming. The recommended circuit is MCLR pulled up through a 10-100 kohm resistor, optionally with a diode to VDD and a 100 nF cap to ground for noise immunity. Also note that configuration bits must be explicitly programmed to enable the watchdog timer, code protection, and oscillator mode - leaving them as defaults after erase will leave code unprotected and may select the wrong oscillator source.
The PIC17C752-16/L does not integrate a true ADC; if you need analog inputs, add an external SPI or parallel ADC (e.g., MCP3202) and protect digital I/O lines with TVS arrays when routed off-board. For long cable runs to keypads or sensor matrices, add series resistors (100-470 ohm) near the MCU pin to dampen transmission-line ringing, and place a 100 nF cap to ground at the cable entry to filter common-mode noise. The hardware USART tolerates RS-232 levels only with an external transceiver like the MAX232.
合規資訊
PIC17C752 family is OTP EPROM and predates RoHS lead-free conversion at Microchip; new RoHS-compliant OTP PICs are not offered for this family. For automotive AEC-Q100 applications, use the PIC18F K-series or dsPIC33EP family.
