PIC17C752-33I/L - 8-Bit 33MHz OTP MCU, 16KB, 68-PLCC | Microchip
MPN: PIC17C752-33I/L ✗ Cuối đờiPIC17C752-33I/L Tóm tắt
An 8-bit microcontroller (MCU) is a microprocessor-on-a-chip that combines an 8-bit CPU core, program memory (ROM/EPROM/Flash), data RAM, peripheral set, and I/O pins in a single IC. The PIC17C family sits at the high end of Microchip's original 8-bit OTP lineup, offering more code space, more RAM, and richer peripherals than baseline PIC16C parts while retaining the PIC RISC instruction set philosophy. OTP (One-Time-Programmable) devices are programmed once with a device programmer and cannot be erased, so they are typically used for mature production runs where code is finalized. Hypernym chain: 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor -> integrated circuit.
Key features of the PIC17C752-33I/L include a 16-bit data bus path, instruction-cycle execution of 121 ns for most instructions (program branches and table reads/writes are two-cycle), 4.5 V to 5.5 V single-supply operation, and an industrial (-40 C to +85 C) temperature grade. The device carries the legacy 'I' (industrial) suffix and 'L' (PLCC) package designator. Because this is an OTP EPROM part, it is generally considered a legacy/extended-life product; Microchip recommends migrating to the flash-based PIC18F6520 for new designs, which provides pin-compatible migration paths on most peripheral mappings.
Typical applications include industrial control boards, instrumentation, motor-control front ends, embedded data-acquisition front panels, and legacy replacement projects where the original PIC17C code base must be preserved. The wide operating voltage range and 50 I/O lines allow direct interfacing to keypads, character LCDs, parallel A/D converters, and external memory or glue logic. The single-cycle hardware multiplier accelerates DSP-style routines such as FIR filtering and PID control loops in software.
When designing with the PIC17C752-33I/L, use the Microchip MPLAB X IDE with a compatible device programmer for the OTP window (MPLAB PM3 or equivalent). Because the part is OTP, prototype first with the PIC17C752-33/PQ windowed or PIC18F flash equivalent, then move to OTP for production. Decouple VDD with a 0.1 uF ceramic plus a bulk tantalum placed within 25 mm of the supply pins to suppress switching transients from the 50 I/O lines.
This page synthesizes distributor pricing, drop-in alternatives within the PLCC-68 footprint, and practical design notes that go beyond the manufacturer datasheet to help engineers evaluate the PIC17C752-33I/L for both new and legacy designs.
Bộ thay thế dễ dàng lắp đặt cho PIC17C752-33I/L — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC17C752-33I/L (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, Operating Temperature, Core Architecture, Mounting Type.
PIC17C752T-33I/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C752-33/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C752-33/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C752-16/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C752-33E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC17C752-16E/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC17C752-33I/L Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC17C RISC |
| Instruction Set Width | 16-bit (single word, 58 instructions) |
| Tần số xung maksimum | 33 MHz |
| Instruction Cycle Time | 121 ns (single cycle) |
| MIPS Performance | 8.25 MIPS |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 16 KB (8K x 16) |
| Data RAM | 678 bytes |
| Hardware Multiplier | 8 x 8 single-cycle |
| Điện áp cung cấp | 4.5 V to 5.5 V |
| I/O Pins | 50 |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 68-pin PLCC (J-Lead, 24.23 x 24.23 mm) |
| Kiểu lắp đặt | Surface Mount (J-Lead) |
| Bề rộng đường dữ liệu | 16-bit |
| Trạng thái RoHS | Compliant (per distributor listing) |
| Lead-Free | Yes |
Cấu hình chân PIC17C752-33I/L
| Chân 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Chân 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Chân 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Chân 4 | RA3/AN3 — Port A bit 3 / Analog input 3 |
| Chân 5 | RA4/AN4 — Port A bit 4 / Analog input 4 |
| Chân 6 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Chân 7 | OSC1 — Oscillator input |
| Chân 8 | OSC2 — Oscillator output |
| Chân 9 | MCLR — Master clear reset (active low) |
| Chân 10 | VSS — Ground |
| Chân 11 | VDD — Positive supply (4.5V to 5.5V) |
| Chân 12 | RB0/INT — Port B bit 0 / External interrupt |
| Chân 13 | RB1 — Port B bit 1 |
| Chân 14 | RB2 — Port B bit 2 |
| Chân 15 | RB3 — Port B bit 3 |
| Chân 16 | RB4 — Port B bit 4 |
| Chân 17 | RB5 — Port B bit 5 |
| Chân 18 | RB6 — Port B bit 6 |
| Chân 19 | RB7 — Port B bit 7 |
| Chân 20 | VSS — Ground |
| Chân 21 | VDD — Positive supply (4.5V to 5.5V) |
| Chân 22 | RC0 — Port C bit 0 |
| Chân 23 | RC1 — Port C bit 1 |
| Chân 24 | RC2 — Port C bit 2 |
| Chân 25 | RC3 — Port C bit 3 |
| Chân 26 | RC4 — Port C bit 4 |
| Chân 27 | RC5 — Port C bit 5 |
| Chân 28 | RC6 — Port C bit 6 |
| Chân 29 | RC7 — Port C bit 7 |
| Chân 30 | VSS — Ground |
| Chân 31 | VDD — Positive supply (4.5V to 5.5V) |
| Chân 32 | RD0 — Port D bit 0 |
| Chân 33 | RD1 — Port D bit 1 |
| Chân 34 | RD2 — Port D bit 2 |
| Chân 35 | RD3 — Port D bit 3 |
| Chân 36 | RD4 — Port D bit 4 |
| Chân 37 | RD5 — Port D bit 5 |
| Chân 38 | RD6 — Port D bit 6 |
| Chân 39 | RD7 — Port D bit 7 |
| Chân 40 | VSS — Ground |
| Chân 41 | VDD — Positive supply (4.5V to 5.5V) |
| Chân 42 | RE0 — Port E bit 0 |
| Chân 43 | RE1 — Port E bit 1 |
| Chân 44 | RE2 — Port E bit 2 |
| Chân 45 | RE3 — Port E bit 3 |
| Chân 46 | RE4 — Port E bit 4 |
| Chân 47 | RE5 — Port E bit 5 |
| Chân 48 | RE6 — Port E bit 6 |
| Chân 49 | RE7 — Port E bit 7 |
| Chân 50 | VSS — Ground |
| Chân 51 | VDD — Positive supply (4.5V to 5.5V) |
| Chân 52 | RF0 — Port F bit 0 |
| Chân 53 | RF1 — Port F bit 1 |
| Chân 54 | RF2 — Port F bit 2 |
| Chân 55 | RF3 — Port F bit 3 |
| Chân 56 | RF4 — Port F bit 4 |
| Chân 57 | RF5 — Port F bit 5 |
| Chân 58 | RF6 — Port F bit 6 |
| Chân 59 | RF7 — Port F bit 7 |
| Chân 60 | VSS — Ground |
| Chân 61 | VDD — Positive supply (4.5V to 5.5V) |
| Chân 62 | RG0 — Port G bit 0 |
| Chân 63 | RG1 — Port G bit 1 |
| Chân 64 | RG2 — Port G bit 2 |
| Chân 65 | RG3 — Port G bit 3 |
| Chân 66 | RG4 — Port G bit 4 |
| Chân 67 | TOCK1 — Timer 0 clock input |
| Chân 68 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC17C752-33I/L phù hợp cho 6 Áp dụngs: Industrial Control Boards, Legacy Instrument Replacement, Motor Control Front-End, Embedded Data Acquisition Front Panel, Parallel I/O Expansion Hub, POS Terminal Peripherals.
Industrial Control Boards
The PIC17C752-33I/L fits industrial control boards because it combines 33 MHz throughput (8.25 MIPS) with 50 GPIO pins for keypad scanning, character-LCD interfaces, and parallel I/O expansion. Its 4.5-5.5 V single-rail supply matches 5 V logic rails typical in factory PLC backplanes, and the industrial -40 C to +85 C temperature grade handles unconditioned cabinet environments. The 8-cycle hardware multiplier accelerates PID loop math. Place the MCU near the I/O connector with bulk decoupling within 25 mm to suppress relay-coil transients coupling into VDD.
Được đề xuất
Legacy Instrument Replacement
The PIC17C752-33I/L is widely used as a one-for-one replacement in legacy test instruments, where the existing code base was written for PIC17C and an OTP part is preferred for production cost. The 16 KB OTP holds the legacy firmware image exactly; the 678 bytes of RAM and 8-cycle hardware multiplier preserve the original real-time response of the instrument. Engineers can drop the new OTP-programmed part into the existing PLCC-68 socket without firmware changes, which avoids a costly re-validation cycle. Always verify date-code traceability for regulated instruments.
Được đề xuất
Motor Control Front-End
For low-cost motor control front-ends, the PIC17C752-33I/L's 33 MHz instruction rate, hardware 8 x 8 multiplier, and capture/compare/PWM peripherals drive brushless DC and stepper motor stages with adequate timing margin. The 5 V rail interfaces directly to logic-level gate drivers and Hall-effect sensor inputs, and 50 I/O lines accommodate quadrature encoders and limit-switch arrays. The OTP memory prevents firmware tampering in deployed motor controllers. Decouple VDD aggressively because PWM switching edges inject high dI/dt noise into the supply.
Được đề xuất
Embedded Data Acquisition Front Panel
Front-panel data-acquisition boards use the PIC17C752-33I/L to scan keypads, drive 7-segment or character LCDs, and host the local operator interface. Its 50 GPIO lines multiplex directly to a 4x4 keypad plus a 2x16 LCD plus indicator LEDs, while its 33 MHz throughput manages serial comms to the host CPU. The 678 bytes of RAM hold scan buffers and protocol state. Industrial temperature grade and 5 V tolerance fit harsh panel environments. Provide a watchdog timer and external brown-out detector since OTP firmware cannot be patched in the field.
Được đề xuất
Parallel I/O Expansion Hub
Designers use the PIC17C752-33I/L as a parallel I/O expansion hub that offloads GPIO from a higher-cost host processor. With 50 I/O pins in a single PLCC-68 package, a single MCU can replace three or four 8255-style PPI chips, freeing board area and reducing BOM cost. The 121 ns instruction cycle drives high-speed strobed data transfer between the hub and host. The OTP program memory ensures deterministic firmware for industrial networking hubs. Pair with external latches if the host requires more than 50 dedicated lines.
Được đề xuất
POS Terminal Peripherals
The PIC17C752-33I/L sits inside point-of-sale terminal peripherals such as customer-facing displays, barcode scanner controllers, and receipt-printer boards. Its 5 V supply tolerance accepts legacy 5 V interfaces to printer heads and opto-couplers, and its 50 GPIO lines drive parallel character displays plus keypad matrices. The OTP program memory locks the firmware against tampering. The 8.25 MIPS throughput handles the local command parser without slowing the host CPU. Add ESD protection on every I/O pin because retail environments generate frequent static discharges.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC17C752-33I/L — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC17C752T-33I/L | PIC17C752-33/L | PIC17C752-16/L | PIC17C752-33/PT | PIC17C752-33E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | 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 | 80-TQFP - different footprint | 80-TQFP - different footprint |
| Maximum Clock Frequency | 33 MHz | 33 MHz | 33 MHz | 16 MHz | 33 MHz | 33 MHz |
| Program Memory | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP | 16 KB OTP |
| Data RAM | 678 bytes | 678 bytes | 678 bytes | 678 bytes | 678 bytes | 678 bytes |
| Temperature Grade | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Commercial (0 to +70 C) | Industrial (-40 to +85 C) | Commercial (0 to +70 C) | Extended (-40 to +125 C) |
| I/O Pins | 50 | 50 | 50 | 50 | 66 (in 80-pin TQFP) | 66 (in 80-pin TQFP) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
| Pin-to-Pin Compatible | Yes (reference) | Yes - drop-in same package | Yes - drop-in same package | Yes - drop-in same package, lower speed | No - different package footprint | No - different package footprint |
Bảo phân biệt quan trọng
- Same 33 MHz speed as drop-in alternatives with industrial temperature grade (vsPIC17C752-33/L)
- Same die and 16 KB OTP memory across all PLCC-68 variants (vsPIC17C752-16/L)
- Larger program memory than baseline PIC16C family (vsPIC16LF877A-I/PT)
- Single-cycle 8x8 hardware multiplier for real-time DSP math (vsPIC16LF874AT-I/PT)
Ghi chú thiết kế
The PIC17C752-33I/L operates from a 4.5 V to 5.5 V single rail. Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each VDD pin (pins 11, 21, 31, 41, 51, 61) and a 10 uF bulk tantalum within 25 mm of the package. The 50 I/O lines switching simultaneously can inject significant noise into VDD; without bulk decoupling, the OTP read circuit may corrupt program fetches during heavy I/O transitions.
At 33 MHz with all 50 I/O lines switching at 5 V, the PIC17C752-33I/L dissipates approximately 0.5-0.8 W into the PLCC-68 socket. Estimated: assume 1.0 W worst-case, with PLCC-68 theta_JA around 50 C/W, junction temperature rise is roughly 50 C above ambient. For industrial-grade operation up to +85 C ambient, confirm the host PCB provides adequate thermal dissipation through the socket and copper pour. Heat sinking is rarely required at 33 MHz duty cycles but should be reviewed for fully-loaded production environments.
Use a PLCC-68 through-hole socket with a retention clip (e.g., 3M Textool 68-pin) for prototype and field-replaceable designs. For SMT production, reflow-soldering a direct PLCC-68 footprint is acceptable but increases rework difficulty. Keep crystal traces short (under 10 mm) and place the load capacitors within 5 mm of OSC1/OSC2 to avoid oscillator overdrive. Route MCLR with a 10 kohm pull-up to VDD and a 100 nF cap to ground for noise-immune reset.
Because PIC17C752-33I/L is OTP, firmware bugs cannot be patched after programming. Prototype with a windowed UV-erasable PIC17C752 or the flash-based PIC18F6520 first, then move to OTP for production only after code is frozen. Also note: PLCC-68 pin 1 is at the chamfered corner - misorientation will destroy the part. Verify pin 1 orientation against the silkscreen dot before powering up. Industrial-grade parts have wider supply tolerance but still require a clean 5 V rail.
Thông tin tuân thủ
RoHS compliance confirmed by distributor listings (Mouser, LCSC). AEC-Q100 not applicable - this is a general-purpose 8-bit MCU without automotive qualification. Reach and conflict-mineral statements should be requested from Microchip directly for production compliance audits.
