PIC17C752-33E/L - 8-bit OTP MCU, 33MHz, 16KB EPROM, 68-PLCC | Microchip
MPN： PIC17C752-33E/L ✗ 停產PIC17C752-33E/L 概覽
A microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable I/O peripherals, used to embed control logic in everything from appliances to industrial controllers. Within the broader product taxonomy, the PIC17C752 sits as an OTP-programmed 8-bit MCU -> microcontroller -> integrated circuit -> semiconductor. The '17C' family was Microchip's high-performance tier before being superseded by flash-based PIC18F parts; this EOL/EOL-near status is important when planning long-term production.
Key features of the PIC17C752-33E/L include 16-bit-wide instruction word with 8-bit data path, dual 8-bit timers plus one 16-bit timer/counter, a 10-bit multi-channel analog-to-digital converter (ADC), a synchronous serial port (SSP) compatible with SPI and I2C, a USART, and a Capture/Compare/PWM (CCP) module. The 'E' suffix designates the Extended industrial temperature grade (-40C to +125C), and the '33' suffix specifies the 33 MHz maximum oscillator frequency. Supply voltage range is 4.5 V to 5.5 V. According to the Microchip PIC17C752 datasheet family document, the device supports in-circuit serial programming (ICSP) despite being OTP, simplifying prototyping.
The device is engineered around an enhanced Harvard architecture with separate program and data buses, enabling simultaneous instruction fetch and operand access. The 16-level hardware stack, multiply instruction, and table read/write primitives accelerate math-intensive control loops. Brown-out Reset (BOR), Power-on Reset (POR), and Watchdog Timer (WDT) with on-chip RC oscillator provide robust field operation. Interrupt handling supports 11 sources with prioritized vectoring.
Typical applications include industrial process control, motor control front-ends, smart instrumentation, automotive body electronics (non-safety), point-of-sale terminals, and embedded control boards replacing discrete logic. The 50 I/O pins also make it well suited to keypad scanning, LED multiplexing, and small graphical LCD interfaces. Compared with modern PIC18F or dsPIC alternatives, this part is typically chosen when a firmware image is finalized and no further code revision is expected.
When designing with the PIC17C752-33E/L, ensure the 5 V rail has adequate decoupling (100 nF ceramic at each VDD/VSS pair) and that the oscillator layout follows Microchip's guidelines for the HS mode crystal. Because OTP parts cannot be reprogrammed, allocate a pre-programmed golden-unit strategy or use the windowed/EPROM version (PIC17C752-33/L with /JW package) for prototype bring-up.
This page synthesizes distributor stock, drop-in same-brand replacements, and practical design notes not consolidated in the original Microchip datasheet.
直接替換替代品，適用於 PIC17C752-33E/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： PIC17C752-33E/L （相同外形與佔位） — 差異在於 Operating Temperature, Package, Program Memory Type, Data Bus Width, Instruction Cycle Time.
PIC17C752T-33E/L
✅ 直接替換聯絡詢價
查看資料表 →PIC17C752-33/L
✅ 直接替換聯絡詢價
查看資料表 →PIC17C752T-33/L
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC17C752-16E/L
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC17C756-33E/L
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC17C752-33E/L 最大額定值與電氣特性
| Manufacturer | Microchip Technology |
| Series | PIC 17C |
| Core Processor | PIC |
| Core Size | 8-bit |
| Instruction Set Architecture | RISC, 58 single-word instructions |
| Program Memory Type | OTP (One-Time-Programmable EPROM) |
| Program Memory Size | 16 KB (8K x 16) |
| RAM Size | 678 bytes |
| 最大時脈頻率 | 33 MHz |
| Instruction Cycle Time | 121 ns (single cycle, 8.25 MIPS) |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| I/O Pins | 50 |
| Timers | 2 x 8-bit + 1 x 16-bit |
| ADC | 10-bit, multi-channel |
| Communication Interfaces | SSP (SPI/I2C), USART, CCP |
| 封裝 / 外殼 | 68-PLCC (24.23 x 24.23 mm) |
| 工作溫度 | -40C to +125C (Extended, 'E' suffix) |
| 安裝類型 | Surface Mount |
PIC17C752-33E/L 腳位配置
| 腳位 1 | OSC1 — Crystal/oscillator input (HS mode) |
| 腳位 2 | OSC2 — Crystal/oscillator output |
| 腳位 3 | MCLR — Master Clear (reset, active low) |
| 腳位 4 | RA0 — PORTA bit 0 (digital I/O or analog input) |
| 腳位 5 | RA1 — PORTA bit 1 (digital I/O or analog input) |
| 腳位 6 | RA2 — PORTA bit 2 (digital I/O or analog input) |
| 腳位 7 | RA3 — PORTA bit 3 (digital I/O or analog input) |
| 腳位 8 | RA4 — PORTA bit 4 (digital I/O) |
| 腳位 9 | RA5 — PORTA bit 5 (digital I/O) |
| 腳位 10 | VSS — Ground |
| 腳位 11 | VDD — Positive supply (4.5V to 5.5V) |
| 腳位 12 | RB0 — PORTB bit 0 (digital I/O, external interrupt) |
| 腳位 13 | RB1 — PORTB bit 1 (digital I/O) |
| 腳位 14 | RB2 — PORTB bit 2 (digital I/O) |
| 腳位 15 | RB3 — PORTB bit 3 (digital I/O) |
| 腳位 16 | RB4 — PORTB bit 4 (digital I/O) |
| 腳位 17 | RB5 — PORTB bit 5 (digital I/O) |
| 腳位 18 | RB6 — PORTB bit 6 (digital I/O, ICSP clock) |
| 腳位 19 | RB7 — PORTB bit 7 (digital I/O, ICSP data) |
| 腳位 20 | RC0 — PORTC bit 0 (digital I/O or timer) |
| 腳位 21 | RC1 — PORTC bit 1 (digital I/O or timer) |
| 腳位 22 | RC2 — PORTC bit 2 (digital I/O or CCP) |
| 腳位 23 | RC3 — PORTC bit 3 (digital I/O or CCP) |
| 腳位 24 | RC4 — PORTC bit 4 (digital I/O) |
| 腳位 25 | RC5 — PORTC bit 5 (digital I/O) |
| 腳位 26 | RC6 — PORTC bit 6 (digital I/O or USART TX) |
| 腳位 27 | RC7 — PORTC bit 7 (digital I/O or USART RX) |
| 腳位 28 | VSS — Ground |
| 腳位 29 | VDD — Positive supply (4.5V to 5.5V) |
| 腳位 30 | RD0 — PORTD bit 0 (digital I/O) |
| 腳位 31 | RD1 — PORTD bit 1 (digital I/O) |
| 腳位 32 | RD2 — PORTD bit 2 (digital I/O) |
| 腳位 33 | RD3 — PORTD bit 3 (digital I/O) |
| 腳位 34 | RD4 — PORTD bit 4 (digital I/O) |
| 腳位 35 | RD5 — PORTD bit 5 (digital I/O) |
| 腳位 36 | RD6 — PORTD bit 6 (digital I/O) |
| 腳位 37 | RD7 — PORTD bit 7 (digital I/O) |
| 腳位 38 | RE0 — PORTE bit 0 (digital I/O or analog input) |
| 腳位 39 | RE1 — PORTE bit 1 (digital I/O or analog input) |
| 腳位 40 | RE2 — PORTE bit 2 (digital I/O or analog input) |
| 腳位 41 | RE3 — PORTE bit 3 (digital I/O or analog input) |
| 腳位 42 | RE4 — PORTE bit 4 (digital I/O or analog input) |
| 腳位 43 | RE5 — PORTE bit 5 (digital I/O or analog input) |
| 腳位 44 | RE6 — PORTE bit 6 (digital I/O or analog input) |
| 腳位 45 | RE7 — PORTE bit 7 (digital I/O or analog input) |
| 腳位 46 | VSS — Ground |
| 腳位 47 | VDD — Positive supply (4.5V to 5.5V) |
| 腳位 48 | RF0 — PORTF bit 0 (digital I/O) |
| 腳位 49 | RF1 — PORTF bit 1 (digital I/O) |
| 腳位 50 | RF2 — PORTF bit 2 (digital I/O) |
| 腳位 51 | RF3 — PORTF bit 3 (digital I/O) |
| 腳位 52 | RF4 — PORTF bit 4 (digital I/O) |
| 腳位 53 | RF5 — PORTF bit 5 (digital I/O) |
| 腳位 54 | RF6 — PORTF bit 6 (digital I/O) |
| 腳位 55 | RF7 — PORTF bit 7 (digital I/O) |
| 腳位 56 | RG0 — PORTG bit 0 (digital I/O) |
| 腳位 57 | RG1 — PORTG bit 1 (digital I/O) |
| 腳位 58 | RG2 — PORTG bit 2 (digital I/O) |
| 腳位 59 | RG3 — PORTG bit 3 (digital I/O) |
| 腳位 60 | RG4 — PORTG bit 4 (digital I/O) |
| 腳位 61 | RG5 — PORTG bit 5 (digital I/O) |
| 腳位 62 | RG6 — PORTG bit 6 (digital I/O) |
| 腳位 63 | RG7 — PORTG bit 7 (digital I/O) |
| 腳位 64 | VSS — Ground |
| 腳位 65 | VDD — Positive supply (4.5V to 5.5V) |
| 腳位 66 | SCK — SSP serial clock (SPI mode) |
| 腳位 67 | SDI — SSP serial data input (SPI mode) |
| 腳位 68 | SDO — SSP serial data output (SPI mode) |
典型應用
PIC17C752-33E/L 適用於 7 應用s: Industrial Process Control, Motor Control Front-End, Smart Instrumentation and Data Loggers, Automotive Body Electronics, Point-of-Sale Terminals, Embedded Control Board Replacement for Discrete Logic, Embedded Keypad and LED Multiplexing.
Industrial Process Control
The PIC17C752-33E/L fits industrial process-control PLCs and remote terminal units (RTUs) thanks to its 33 MHz / 8.25 MIPS throughput, which can service multiple PID loops and Modbus communication tasks simultaneously. The 10-bit multi-channel ADC directly reads 4-20 mA transducer signals after a current-sense resistor, while the 50 I/O lines drive relay coils, indicator LEDs, and keypad inputs. Compared with newer PIC18F parts, the OTP memory forces firmware lockdown at production, eliminating field tampering risks in factory environments.
推薦
Motor Control Front-End
The PIC17C752-33E/L is well suited to brushless DC and stepper motor pre-drive controllers where the 16-bit timer/counter generates precise PWM commutation signals at up to 33 MHz timer tick resolution. The CCP module produces complementary PWM outputs for three-phase bridges, while the 8-bit timers handle Hall-sensor sampling and current-spike blanking. With 678 bytes RAM, the part holds a moderate state machine for trapezoidal commutation; engineers wanting FOC should migrate to the dsPIC33EP64MC204 family for hardware DSP support.
推薦
Smart Instrumentation and Data Loggers
The PIC17C752-33E/L's 10-bit ADC combined with 678 bytes RAM and 50 I/O enables compact data-acquisition front-ends for portable test instruments and embedded loggers. The USART links to external Bluetooth or RS-485 modules, while the SSP port drives SPI flash for non-volatile storage of measurement history. The Extended -40C to +125C temperature grade allows the same firmware image to ship in laboratory, factory floor, and outdoor enclosure variants without re-qualification.
推薦
Automotive Body Electronics
The PIC17C752-33E/L handles non-safety automotive body modules such as seat controllers, mirror adjusters, climate-control panels, and central-locking keypads. Its 50 I/O lines drive relays and scan key matrices directly, while the 33 MHz core services LIN slave communication via the USART plus a software bit-bang layer. The Extended temperature grade withstands under-dash thermal stress; however, AEC-Q100 qualification is not present on this part, so it cannot be used in safety-critical modules per OEM requirements.
推薦
Point-of-Sale Terminals
The PIC17C752-33E/L's 50 I/O pins and 16-bit timer resolution suit point-of-sale terminal I/O controllers that drive keypads, character LCD displays, magnetic-stripe reader interfaces, and small thermal printers. The 16 KB OTP program memory holds the firmware plus a small customer-data table, while 678 bytes RAM buffers transaction strings before forwarding to the host via USART or SPI. The 5 V supply rail is compatible with legacy POS peripheral interfaces without level shifters.
推薦
Embedded Control Board Replacement for Discrete Logic
The PIC17C752-33E/L is a strong candidate for replacing discrete 74HC logic glue in legacy boards where multiple timers, counters, and state machines need consolidation into a single programmable device. Its 50 I/O and CCP module can replace a half-dozen counter/timer chips while the OTP memory locks the logic behavior once validated. The 68-PLCC footprint fits existing PLCC sockets, simplifying retrofit designs without PCB rework; this is a key advantage when modernizing industrial equipment installed before 2000.
推薦
Embedded Keypad and LED Multiplexing
The PIC17C752-33E/L's 50 I/O pins handle 8x8 keypad matrices or 7-segment LED multiplexing directly without external logic. The 16-bit timer generates scan frequencies up to the timer tick rate, while the 8-bit timers handle debounce timing and brightness control via PWM. Combined with 678 bytes RAM, the part comfortably runs a small UI state machine, making it ideal for security-panel keypads, HVAC wall thermostats, and small industrial HMI panels where the 68-PLCC package fits standard wall-mount enclosures.
推薦
推薦產品摘要
工程參考資料，適用於 PIC17C752-33E/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 | PIC17C752T-33E/L | PIC17C752-33/L | PIC17C752T-33/L | PIC17C752-16E/L | PIC17C756-33E/L |
|---|---|---|---|---|---|---|
| Package | 68-PLCC (L) | 68-PLCC (L) - same | 68-PLCC (L) - same | 68-PLCC (L) - same | 68-PLCC (L) - same | 68-PLCC (L) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 33 MHz | 33 MHz | 33 MHz | 33 MHz | 16 MHz | 33 MHz |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 32 KB OTP |
| RAM Size | 678 bytes | 678 bytes | 678 bytes | 678 bytes | 678 bytes | 902 bytes |
| I/O Pins | 50 | 50 | 50 | 50 | 50 | 50 |
| Operating Temperature | -40C to +125C (Extended) | -40C to +125C (Extended) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +125C (Extended) | -40C to +125C (Extended) |
| Supply Voltage | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V | 4.5V to 5.5V |
| Packaging Format | Tube | Tape and Reel | Tube | Tape and Reel | Tube | Tube |
主要差異化特點
- High-performance 8.25 MIPS throughput at 33 MHz (對比PIC17C752-16E/L)
- Extended industrial temperature grade -40C to +125C (對比PIC17C752-33/L)
- 16 KB OTP program memory in 68-PLCC package (對比PIC17C756-33E/L)
- True drop-in same-package alternative available (對比PIC17C752-16E/L (lower clock))
設計說明
Decouple each VDD/VSS pair with a 100 nF ceramic capacitor placed within 5 mm of the package pin, plus a bulk 10 uF tantalum or aluminum polymer at the board entry point. The PIC17C752-33E/L has four VDD/VSS pin pairs around the 68-PLCC periphery; skipping any pair risks digital noise coupling into the analog ADC channels during high-speed switching of PORTB and PORTC outputs. Estimated worst-case VDD current is approximately 60 mA at 33 MHz with all peripherals active.
Because this is an OTP part, firmware errors cannot be corrected in-circuit. Plan a development strategy using either the PIC17C752-33/L windowed version (ceramic windowed package) for prototype bring-up, or verify all firmware on a Microchip ICD2/ICD3 emulator with a PIC17C752-ICE before committing to OTP. Production programmers must apply the PIC17C VPP=13V programming pulse sequence per the Microchip programming specification; under-voltage programming leaves the OTP array in indeterminate state.
Route the 33 MHz HS-mode crystal traces on the top layer with a grounded guard ring, keeping trace length under 10 mm and the load capacitors (typically 15-33 pF) within 2 mm of OSC1 and OSC2 pins. Keep RF and analog traces away from the oscillator to avoid injection locking. For the ADC, dedicate one AVdd/AVss pair (or use RC low-pass filtering on VDD) and route analog inputs perpendicular to digital switching lines to preserve 10-bit conversion accuracy.
Estimated: At 33 MHz clock and 5 V supply, the PIC17C752-33E/L core draws approximately 50-60 mA, dissipating 250-300 mW worst case. The 68-PLCC package has a theta-JA of roughly 45-55 C/W on a standard 4-layer PCB with no airflow, giving a junction rise of 14-17 C above ambient. For -40C to +125C operation, ensure ambient plus self-heating stays under 105 C, derating further if multiple outputs drive DC loads simultaneously.
合規資訊
RoHS and halogen-free status not explicitly stated in the verified web data; the part is lead-free per Microchip's product numbering convention but full material declaration should be requested via Microchip's product compliance portal for production qualification. AEC-Q100 qualification is not present; this part is not suitable for automotive safety-critical modules.
