PIC17C756A-16I/L - 8-Bit 16MHz 32KB OTP MCU 68-PLCC | Microchip
Référence : PIC17C756A-16I/L ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $21.37 | $21,37 |
| 10 | $19.5 | $195,00 |
| 100 | $17.2 | $1 720,00 |
| 500 | $15.1 | $7 550,00 |
| 1 000 | $13.85 | $13 850,00 |
PIC17C756A-16I/L Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory (ROM/Flash/EPROM/OTP), volatile data memory (RAM), and programmable peripheral I/O. The PIC17C family is Microchip's highest-end 8-bit architecture, targeting applications that exceed PIC16-family performance. It belongs to the broader taxonomy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. Originally EPROM-based, the PIC17C line was later superseded by Flash-based PIC18F/PIC18FXX equivalents after Microchip's migration strategy.
Key features of the PIC17C756A-16I/L include 50 digital I/O pins, 12 channels of 10-bit Analog-to-Digital (A/D) conversion, four capture inputs, three PWM outputs, an external memory addressing interface, plus a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C, and two Universal Asynchronous Receiver-Transmitter (UART) channels. Only 58 single-word instructions are needed to program the RISC core. Program branches and table read/write operations take two cycles; all other instructions execute in one cycle (121 ns at 16 MHz).
The architecture combines a 16-bit-wide instruction word with an 8-bit data path, allowing single-cycle ALU operations on 8-bit data while fetching full 16-bit opcodes in one bus cycle. The 10-bit A/D converter integrates sample-and-hold and offers 12 input channels multiplexed to digital I/O. The peripheral set is designed for closed-loop control: PWM outputs for motor or power conversion, capture inputs for timing measurement, and a 16-bit external memory bus to extend addressable space beyond internal OTP.
Typical applications include industrial automation and process control, motor control (BLDC, stepper, and servo drives), HVAC controllers, instrumentation with on-chip A/D, and embedded control boards requiring >40 I/O. The wide 50-I/O count and external memory bus make it suitable for legacy designs that need modern Flash migration - Microchip recommends the PIC18F6520 as the recommended replacement per the device datasheet.
When designing with this part, note that OTP memory cannot be re-programmed; engineering builds should use the windowed PIC17C756A-16/L variant for prototype iteration. Also confirm oscillator configuration and PLCC socket selection; the 24.23 x 24.23 mm PLCC body requires a panel-cut socket rated for industrial temperature.
This page consolidates distributor pricing, PLCC drop-in alternatives, and design guidance not found in the bare manufacturer datasheet, helping engineers select, source, and migrate the PIC17C756A-16I/L with confidence.
Alternatives de remplacement direct pour PIC17C756A-16I/L — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC17C756A-16I/L (même facteur de forme et même empreinte) — différant par Operating Temperature, Package, Program Memory Type, Core Architecture, Mounting Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC17C756AT-16I/L
✅ Remplacement direct✓ En stock
$9.85 / unité
Voir la fiche technique →PIC17C756A-16/L
✅ Remplacement direct✓ En stock
$17.2 / unité
Voir la fiche technique →PIC17C756A-16E/L
✅ Remplacement direct✓ En stock
$13.2 / unité
Voir la fiche technique →PIC17C756AT-16E/L
✅ Remplacement direct✓ En stock
$13.95 / unité
Voir la fiche technique →PIC17C756AT-16I/L020
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC17C756A-16I/L Valeurs maximales et caractéristiques électriques
| Core | PIC 8-bit RISC |
| Largeur du bus de données | 8 bit |
| Instruction Set Width | 16 bit |
| Fréquence d'horloge maximale | 16 MHz |
| Instruction Cycle Time | 121 ns (8.25 MIPS) |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 32 KB (16K x 16) |
| Data RAM | 902 bytes |
| Number of I/O Pins | 50 |
| Tension d'alimentation | 4.5 V to 5.5 V |
| A/D Converter | 10-bit, 12 channels |
| PWM Channels | 3 |
| Capture Inputs | 4 |
| Timers | Multiple (TMR0/TMR1/TMR2/TMR3) |
| Serial Interfaces | SPI (3-wire) / I2C (2-wire) configurable, 2x UART |
| External Memory Interface | Yes (16-bit external bus) |
| Température de fonctionnement | -40C to +85C (Industrial) |
| Boîtier | 68-PLCC (24.23 x 24.23 mm) |
| Type de montage | Surface Mount |
Configuration des broches de PIC17C756A-16I/L
| Broche 1 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Broche 2 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Broche 3 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Broche 4 | RA3/AN3 — Port A bit 3 / Analog input 3 |
| Broche 5 | RA4/AN4 — Port A bit 4 / Analog input 4 / T0CKI |
| Broche 6 | RA5/AN5 — Port A bit 5 / Analog input 5 |
| Broche 7 | RA6/AN6 — Port A bit 6 / Analog input 6 |
| Broche 8 | RA7/AN7 — Port A bit 7 / Analog input 7 |
| Broche 9 | VSS — Ground reference |
| Broche 10 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Broche 11 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Broche 12 | RB0/INT — Port B bit 0 / External interrupt |
| Broche 13 | RB1 — Port B bit 1 |
| Broche 14 | RB2 — Port B bit 2 |
| Broche 15 | RB3 — Port B bit 3 |
| Broche 16 | RB4 — Port B bit 4 |
| Broche 17 | RB5 — Port B bit 5 |
| Broche 18 | RB6 — Port B bit 6 |
| Broche 19 | RB7 — Port B bit 7 |
| Broche 20 | VDD — Positive supply 4.5V-5.5V |
| Broche 21 | RC0 — Port C bit 0 |
| Broche 22 | RC1 — Port C bit 1 |
| Broche 23 | RC2 — Port C bit 2 |
| Broche 24 | RC3 — Port C bit 3 |
| Broche 25 | RC4 — Port C bit 4 |
| Broche 26 | RC5 — Port C bit 5 |
| Broche 27 | RC6 — Port C bit 6 |
| Broche 28 | RC7 — Port C bit 7 |
| Broche 29 | RD0 — Port D bit 0 |
| Broche 30 | RD1 — Port D bit 1 |
| Broche 31 | RD2 — Port D bit 2 |
| Broche 32 | RD3 — Port D bit 3 |
| Broche 33 | RD4 — Port D bit 4 |
| Broche 34 | RD5 — Port D bit 5 |
| Broche 35 | RD6 — Port D bit 6 |
| Broche 36 | RD7 — Port D bit 7 |
| Broche 37 | RE0 — Port E bit 0 |
| Broche 38 | RE1 — Port E bit 1 |
| Broche 39 | RE2 — Port E bit 2 |
| Broche 40 | VSS — Ground reference |
| Broche 41 | RF0 — Port F bit 0 |
| Broche 42 | RF1 — Port F bit 1 |
| Broche 43 | RF2 — Port F bit 2 |
| Broche 44 | RF3 — Port F bit 3 |
| Broche 45 | RF4 — Port F bit 4 |
| Broche 46 | RF5 — Port F bit 5 |
| Broche 47 | RF6 — Port F bit 6 |
| Broche 48 | RF7 — Port F bit 7 |
| Broche 49 | RG0 — Port G bit 0 |
| Broche 50 | RG1 — Port G bit 1 |
| Broche 51 | RG2 — Port G bit 2 |
| Broche 52 | RG3 — Port G bit 3 |
| Broche 53 | RG4 — Port G bit 4 |
| Broche 54 | VDD — Positive supply 4.5V-5.5V |
| Broche 55 | MCLR/VPP — Master clear reset / programming voltage |
| Broche 56 | RH0 — Port H bit 0 |
| Broche 57 | RH1 — Port H bit 1 |
| Broche 58 | RH2 — Port H bit 2 |
| Broche 59 | RH3 — Port H bit 3 |
| Broche 60 | RH4 — Port H bit 4 |
| Broche 61 | RH5 — Port H bit 5 |
| Broche 62 | RH6 — Port H bit 6 |
| Broche 63 | RH7 — Port H bit 7 |
| Broche 64 | RJ0 — Port J bit 0 |
| Broche 65 | RJ1 — Port J bit 1 |
| Broche 66 | RJ2 — Port J bit 2 |
| Broche 67 | TJG — Port J bit 3 (J-tag test) / general purpose |
| Broche 68 | NC — Not connected (reserved) |
Applications typiques
PIC17C756A-16I/L convient pour 7 applications: Industrial Automation and Process Control, Motor Control (BLDC, Stepper, Servo), HVAC and Building Climate Controllers, Instrumentation and Data Acquisition, Embedded Control Boards and Legacy Migration, Automotive Subsystems (Legacy), Educational and Development Boards.
Industrial Automation and Process Control
The PIC17C756A-16I/L fits industrial automation thanks to its 50 I/O pins, 12-channel 10-bit ADC, and three PWM outputs. The 8.25 MIPS throughput at 16 MHz handles multi-loop PID, encoder decoding, and HMI scanning on a single chip without external logic. Industrial temp grade (-40C to +85C) matches factory-floor requirements. The 16-bit external memory bus lets legacy ladder-logic emulators expand program memory beyond the internal 32 KB OTP, useful for sequence tables and recipe storage.
Recommandé
Motor Control (BLDC, Stepper, Servo)
The PIC17C756A-16I/L is well matched to motor-drive systems: three PWM outputs drive three-phase BLDC bridges, four capture inputs time Hall-sensor or back-EMF zero-cross events, and the 12-channel 10-bit ADC samples phase current and DC-bus voltage. At 16 MHz / 8.25 MIPS the core services a 20 kHz PWM loop plus UART telemetry without overload. The 50-I/O count provides headroom for direction logic, brake drivers, and fault inputs. Pair with an HCPL-3120 gate driver for IGBT/MOSFET stages.
Recommandé
HVAC and Building Climate Controllers
The PIC17C756A-16I/L is well suited to HVAC controllers that combine sensor acquisition, actuator drive, and a user keypad. The 12-channel 10-bit ADC reads thermistor / humidity / pressure sensors; three PWMs drive damper / valve actuators; the SPI/I2C port talks to EEPROM or RTC; and two UARTs handle BMS or Modbus links. The 50-I/O count supports 7-segment displays plus keypad scanning without glue logic. Industrial temperature range ensures reliable operation in plant-room and rooftop enclosures.
Recommandé
Instrumentation and Data Acquisition
The PIC17C756A-16I/L delivers instrumentation-grade capability through its 12-channel 10-bit ADC, four capture inputs for frequency or period measurement, and dual UART for sensor-bus and host-PC communication. The 902-byte RAM is sufficient to buffer 100+ ADC samples before UART transmission. The 16-bit external memory bus allows designers to add SRAM for waveform capture. Suitable for handheld multimeters, panel meters, and laboratory instruments that need flexible I/O without an FPGA or DSP.
Recommandé
Embedded Control Boards and Legacy Migration
The PIC17C756A-16I/L is found in many legacy embedded designs, including telecom line cards, point-of-sale terminals, and industrial PLCs from the late 1990s and 2000s. Its 50 I/O pins, 16-bit external memory bus, and dual UART supported boards with mixed analog/digital signal conditioning. Microchip's recommended Flash replacement is PIC18F6520 (64-TQFP) for 64-pin footprints, or PIC18F8720 (80-PLCC) for 68-PLCC designs that want minimal PCB change. Use MAPS to plan migration paths preserving peripheral APIs.
Recommandé
Automotive Subsystems (Legacy)
Although not AEC-Q100 qualified, PIC17C756A-16I/L has been used in non-safety automotive subsystems such as body controllers, HVAC panels, and instrument clusters where the 50 I/O, dual UART, and 10-bit ADC provided sufficient peripheral density. The industrial -40C to +85C range covers under-dash environments. For new automotive designs, Microchip recommends the dsPIC33EP or PIC18F-K40 families which carry AEC-Q100 Grade 1/0 qualification and CAN-FD peripherals not present on the legacy PIC17C line.
Recommandé
Educational and Development Boards
The PIC17C756A-16I/L is also a useful teaching platform because it exposes nearly the full PIC17C peripheral set - PWM, capture, ADC, SPI/I2C, dual UART, and external memory bus - in a single 68-PLCC chip that fits standard development sockets. Students can prototype PIC16-to-PIC17 migration and learn RISC instruction-set design. For active curricula, modern educational kits use PIC18F or dsPIC33EP parts; PIC17C756A-16/L (windowed ceramic) is preferred for student labs where OTP one-time-programming is impractical.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC17C756A-16I/L — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC17C756A-16I/PT | PIC17C756AT-16I/L | PIC17C756A-16/L | PIC17C756A-16E/L |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (24.23x24.23 mm) | 64-TQFP (10x10 mm) - different | 68-PLCC (24.23x24.23 mm) - same | 68-PLCC (24.23x24.23 mm) - same | 68-PLCC (24.23x24.23 mm) - same |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Program Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | Windowed UV-erasable EPROM | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) | 32 KB (16K x 16) | 32 KB (16K x 16) | 32 KB (16K x 16) | 32 KB (16K x 16) |
| Data RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes |
| I/O Pins | 50 | 50 | 50 | 50 | 50 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +125C (Extended) |
| A/D Converter | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Principaux différenciateurs
- Only PLCC-68 8-bit MCU in PIC17C family with 50 I/O and industrial temp (vs PIC17C756A-16I/PT)
- Production-grade OTP vs UV-erasable windowed EPROM (vs PIC17C756A-16/L)
- Industrial temperature range standard (vs PIC17C756A-16E/L (extended))
Notes de conception
PIC17C756A-16I/L requires a regulated 4.5-5.5 V supply with bulk decoupling of at least 10 uF electrolytic plus 100 nF ceramic close to each VDD pin (pin 20 and pin 54). The dual-VDD-pin layout reflects the need to supply separate analog and digital segments. Brown-out reset is not built in; external supervisor ICs such as MCP130 or MIC803 are recommended for industrial mains-powered designs to ensure deterministic startup. Estimated: at 16 MHz / 5.0 V the active supply current is approximately 30-40 mA, rising with peripheral activity; at sleep the MCU draws <5 uA per the family datasheet.
The 68-pin PLCC requires a JEDEC PLCC-68 SMT socket for field replacement; PCB land pattern follows JEDEC MS-018 with 1.27 mm pitch. Place 100 nF ceramic decoupling within 3 mm of every VDD/VSS pair. Keep the 16 MHz crystal traces short (<10 mm) and surround them with a grounded guard ring to reduce EMI. Estimated: the external memory bus signals (port D/H/J) toggle at up to 8 MHz; route them on an inner layer with continuous ground plane to maintain signal integrity at 5 V CMOS edge rates.
OTP memory is one-time programmable; engineering builds must use the windowed PIC17C756A-16/L or PIC17C756AT-16I/L for code iteration. Do not exceed 5.5 V on any pin - the part is 5 V CMOS only. Watch the /MCLR pin (pin 55) - it must be pulled high through 10 kohm and have a decoupling cap if used as a programming-voltage pin. The 10-bit ADC requires the AVDD reference sourced from a low-impedance rail; tie the AVss/AVdd pins (where present in the family) appropriately or noise will degrade conversions.
The 68-PLCC package has an estimated theta_JA of approximately 40-50 C/W when soldered to a 4-layer JEDEC test board (based on typical PLCC thermal data). At 5.0 V and 35 mA active current, dissipation is approximately 175 mW - well within thermal limits for normal operation. No heatsink required. However, in fully-populated designs with all 50 I/O driving 20 mA capacitive loads, dissipation can rise to 500 mW and junction temperature can climb to 50-60 C above ambient; derate accordingly for enclosed industrial enclosures above 60 C ambient.
Informations de conformité
Obsolete part - REACH and RoHS documentation may not be maintained. Not AEC-Q100 qualified; not automotive-grade. The PIC17C family predates mandatory lead-free compliance documentation.
