PIC17C756AT-16I/PT - 8-bit OTP MCU, 32KB EPROM, 64-TQFP | Microchip
Référence : PIC17C756AT-16I/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $19.94 | $19,94 |
| 10 | $17.5 | $175,00 |
| 100 | $14.75 | $1 475,00 |
| 500 | $12.1 | $6 050,00 |
| 1 000 | $10.25 | $10 250,00 |
PIC17C756AT-16I/PT Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data RAM, and integrated peripherals designed for embedded control. The PIC17C family sits at the upper end of Microchip's 8-bit portfolio, targeting applications that demand higher throughput than the PIC16 family. Within the broader taxonomy, this part is an 8-bit MCU -> microcontroller -> embedded processor -> semiconductor, and uses Harvard architecture with separate program and data buses for deterministic instruction fetch.
Key features include a 16 MHz maximum clock input (33 MHz on later revisions), 58 single-word instructions for compact code, an 8 x 8 hardware multiplier executing in one instruction cycle, dual-capture/compare/PWM modules, two USART ports, an I2C/SPI peripheral, and a 12-channel 10-bit analog-to-digital converter. The Brown-out Reset and Watchdog Timer enhance reliability in industrial and automotive-grade embedded systems where supply transients and code lockups must be guarded against.
The PIC17C756AT-16I/PT uses Microchip's PIC17C RISC architecture with a 16-bit instruction word despite the 8-bit data path, balancing code density with arithmetic performance. The 'T' suffix denotes Tape & Reel packaging, the '-16' rating indicates the 16 MHz maximum clock, and the 'I' temperature grade supports -40C to +85C industrial environments. The 'PT' suffix indicates the 64-pin TQFP (10x10 mm) package.
Typical applications include industrial control panels, motor drive front-end controllers, instrumentation front-ends using the on-chip 10-bit ADC, white-goods and HVAC control boards, and embedded communication bridges where the dual USART and I2C/SPI peripherals reduce external component count. Designers transitioning from PIC16 to higher-performance 8-bit applications also use this device as a stepping stone before migrating to PIC18 or dsPIC architectures.
When designing with this part, note that the OTP memory cannot be re-programmed in-circuit; for development, use the windowed PIC17C756A UV-erasable variant or migrate to the flash-based PIC18F6520 recommended by Microchip as the modern replacement. Always keep VDD between 4.5V and 5.5V and respect the 16 MHz clock input limit to avoid timing violations.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a single distributor or manufacturer page.
Alternatives de remplacement direct pour PIC17C756AT-16I/PT — 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 PIC17C756AT-16I/PT (même facteur de forme et même empreinte) — différant par Package, Program Memory Type, ADC, Core Architecture, Data Bus Width.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC17C756AT-16/PT
✅ Remplacement direct✓ En stock
$11.95 / unité
Voir la fiche technique →PIC17C756A-16I/PT
✅ Remplacement direct✓ En stock
$11.2 / unité
Voir la fiche technique →PIC17C756A-33E/PT
✅ Remplacement direct✓ En stock
$7.55 / unité
Voir la fiche technique →PIC17C756A-16E/PT
✅ Remplacement direct✓ En stock
$16.8 / unité
Voir la fiche technique →PIC17C756AT-16I/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC17C 8-bit RISC |
| Fréquence d'horloge maximale | 16 MHz |
| Instruction Cycle Time | 121 ns (single cycle) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 32 KB (16K x 16) |
| Data RAM | 902 bytes |
| Data EEPROM | Not present (EPROM-based MCU) |
| Largeur du bus de données | 8 bit |
| Instruction Word Width | 16 bit |
| I/O Pins | 50 |
| ADC | 10-bit, 12 channels |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| Température de fonctionnement | -40 C to +85 C (industrial, 'I' grade) |
| Boîtier | 64-pin TQFP (PT) |
| Type de montage | Surface Mount |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, 2x USART, I2C/SPI |
| Multiplier | 8 x 8 hardware, single-cycle |
Configuration des broches de PIC17C756AT-16I/PT
| Broche 1 | RC0 — I/O port C bit 0 |
| Broche 2 | RC1 — I/O port C bit 1 |
| Broche 3 | RC2 — I/O port C bit 2 |
| Broche 4 | RC3 — I/O port C bit 3 |
| Broche 5 | RC4 — I/O port C bit 4 |
| Broche 6 | RC5 — I/O port C bit 5 |
| Broche 7 | RC6 — I/O port C bit 6 |
| Broche 8 | RC7 — I/O port C bit 7 |
| Broche 9 | VSS — Ground |
| Broche 10 | VDD — Positive supply (4.5V-5.5V) |
| Broche 11 | RA0/AN0 — I/O port A bit 0 / analog input 0 |
| Broche 12 | RA1/AN1 — I/O port A bit 1 / analog input 1 |
| Broche 13 | RA2/AN2 — I/O port A bit 2 / analog input 2 |
| Broche 14 | RA3/AN3 — I/O port A bit 3 / analog input 3 |
| Broche 15 | RA4/AN4 — I/O port A bit 4 / analog input 4 |
| Broche 16 | RA5/AN5 — I/O port A bit 5 / analog input 5 |
| Broche 17 | RA6/AN6 — I/O port A bit 6 / analog input 6 |
| Broche 18 | RA7/AN7 — I/O port A bit 7 / analog input 7 |
| Broche 19 | VSS — Ground |
| Broche 20 | VDD — Positive supply (4.5V-5.5V) |
| Broche 21 | RB0/INT — I/O port B bit 0 / external interrupt |
| Broche 22 | RB1 — I/O port B bit 1 |
| Broche 23 | RB2 — I/O port B bit 2 |
| Broche 24 | RB3 — I/O port B bit 3 |
| Broche 25 | RB4 — I/O port B bit 4 |
| Broche 26 | RB5 — I/O port B bit 5 |
| Broche 27 | RB6 — I/O port B bit 6 |
| Broche 28 | RB7 — I/O port B bit 7 |
| Broche 29 | VSS — Ground |
| Broche 30 | OSC1 — Crystal oscillator input |
| Broche 31 | OSC2 — Crystal oscillator output |
| Broche 32 | VDD — Positive supply (4.5V-5.5V) |
| Broche 33 | RD0 — I/O port D bit 0 |
| Broche 34 | RD1 — I/O port D bit 1 |
| Broche 35 | RD2 — I/O port D bit 2 |
| Broche 36 | RD3 — I/O port D bit 3 |
| Broche 37 | RD4 — I/O port D bit 4 |
| Broche 38 | RD5 — I/O port D bit 5 |
| Broche 39 | RD6 — I/O port D bit 6 |
| Broche 40 | RD7 — I/O port D bit 7 |
| Broche 41 | RE0 — I/O port E bit 0 |
| Broche 42 | RE1 — I/O port E bit 1 |
| Broche 43 | RE2 — I/O port E bit 2 |
| Broche 44 | RE3 — I/O port E bit 3 |
| Broche 45 | RE4 — I/O port E bit 4 |
| Broche 46 | RE5 — I/O port E bit 5 |
| Broche 47 | RE6 — I/O port E bit 6 |
| Broche 48 | RE7 — I/O port E bit 7 |
| Broche 49 | VSS — Ground |
| Broche 50 | VDD — Positive supply (4.5V-5.5V) |
| Broche 51 | TX1/RC6 — USART1 transmit (alternate function) |
| Broche 52 | RX1/RC7 — USART1 receive (alternate function) |
| Broche 53 | SCL — I2C clock |
| Broche 54 | SDA — I2C data |
| Broche 55 | SDO — SPI data out |
| Broche 56 | SDI — SPI data in |
| Broche 57 | SCK — SPI clock |
| Broche 58 | PWM1 — PWM output 1 |
| Broche 59 | PWM2 — PWM output 2 |
| Broche 60 | CCP1 — Capture/Compare/PWM 1 |
| Broche 61 | CCP2 — Capture/Compare/PWM 2 |
| Broche 62 | MCLR — Master clear reset (active low) |
| Broche 63 | VSS — Ground |
| Broche 64 | VDD — Positive supply (4.5V-5.5V) |
Applications typiques
PIC17C756AT-16I/PT convient pour 6 applications: Industrial Control Panels, HVAC Control Boards, Motor Drive Front-End Controllers, Instrumentation Front-Ends, Embedded Communication Bridges, White Goods Control Boards.
Industrial Control Panels
The PIC17C756AT-16I/PT fits industrial control panels because of its 50 I/O pins, 12-channel 10-bit ADC, dual USART, and -40C to +85C industrial temperature grade. Engineers route panel-mounted switches, indicators, and 4-20 mA analog sensor inputs directly to the MCU without external multiplexing, and the 32 KB OTP EPROM holds the ladder-logic-equivalent firmware. At 8.25 MIPS the part handles PID loops on the 16 MHz core while the hardware PWM modules drive solid-state relays and proportional valves.
Recommandé
HVAC Control Boards
The PIC17C756AT-16I/PT's 10-bit ADC aggregates multiple thermistor and pressure-sensor inputs, while its PWM outputs modulate blower and compressor drives in HVAC systems. The industrial temperature grade supports installation in unconditioned plant rooms and rooftop units. Brown-out Reset and Watchdog Timer protect the controller from brown-out and firmware lockup conditions common in motor-switching environments.
Recommandé
Motor Drive Front-End Controllers
In motor drives, the PIC17C756AT-16I/PT serves as the front-end command processor, taking torque and speed references over RS-485 (USART) and generating PWM command signals for a downstream power-stage controller. The 8 x 8 single-cycle hardware multiplier accelerates vector-control math, and the 16 MHz core sustains 8.25 MIPS with headroom for sensor debouncing. Dual capture/compare/PWM modules align phase currents to the inverter cycle.
Recommandé
Instrumentation Front-Ends
Test and measurement instruments use the PIC17C756AT-16I/PT as a front-end digitizer and controller, leveraging the 12-channel 10-bit ADC for slow-scan data acquisition and the I2C/SPI peripherals for LCD and EEPROM interfaces. The 902-byte RAM buffers scan frames before pushing them to a host PC over USART. Industrial temperature grade ensures reliable operation in laboratory and field-deployed instruments.
Recommandé
Embedded Communication Bridges
The PIC17C756AT-16I/PT is well suited to protocol-bridging tasks where a device must translate between RS-232, RS-485, and I2C/SPI networks. Dual USART ports handle two asynchronous buses simultaneously while the SPI port services a sensor cluster. At 8.25 MIPS the part can sustain byte-rate buffering without dropping characters, and the 50 I/O lines drive status LEDs and DIP switches for address configuration.
Recommandé
White Goods Control Boards
White goods such as washing machines and dishwashers use the PIC17C756AT-16I/PT as the appliance controller. The OTP EPROM holds the appliance firmware (no field upgrades required), the 10-bit ADC reads water level and temperature sensors, and the PWM channels drive motor and valve actuators. Brown-out Reset protects against line-voltage transients common in domestic appliance installations.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC17C756AT-16I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC17C756AT-16/PT | PIC17C756A-16I/PT | PIC17C756A-33E/PT | PIC17C756A-16E/PT |
|---|---|---|---|---|---|
| Package | TQFP-64 (PT) | TQFP-64 (PT) | TQFP-64 (PT) | TQFP-64 (PT) | TQFP-64 (PT) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM | 32 KB OTP EPROM |
| Max Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 33 MHz | 16 MHz |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes |
| Temperature Grade | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C | Extended -40C to +125C | Extended -40C to +125C |
| Packaging Form | Tape & Reel | Tray | Tray | Tray | Tray |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| 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 | 4.5 V to 5.5 V |
Principaux différenciateurs
- Tape & Reel packaging for high-volume SMT assembly (vs PIC17C756A-16I/PT)
- Industrial -40C to +85C temperature grade (vs PIC17C756AT-16/PT)
- 32 KB OTP EPROM, 50 I/O, 12-channel ADC in TQFP-64 (vs PIC17C752-16I/PT)
Notes de conception
The PIC17C756AT-16I/PT requires a stable 4.5V to 5.5V supply; recommended decoupling is a 10uF bulk tantalum at the board VDD entry plus a 100 nF ceramic within 5 mm of each VDD pin. The part has multiple VDD/VSS pairs on the TQFP-64 footprint; connecting every pair independently minimises digital switching noise on the analog ADC reference rail. Brown-out Reset must be enabled in the configuration word for industrial environments where the 5V rail may sag during motor inrush.
OTP memory cannot be re-programmed; a programming failure (e.g., interrupted during the high-voltage VPP pulse on the MCLR pin) permanently bricks the device. For development, always use the UV-erasable ceramic-windowed PIC17C756A-16I/P variant (PLCC package with window) to iterate firmware before committing to OTP. Always verify the configuration word before final programming; an accidentally-disabled watchdog or wrong oscillator mode causes immediate firmware hang.
At 16 MHz with all peripherals active, the PIC17C756AT-16I/PT draws roughly 50 mA from the 5V supply (250 mW). The TQFP-64 package has a theta_JA near 50 C/W on a 2-layer JEDEC test board, giving a 12.5 C/W rise above ambient. The industrial -40C to +85C rating leaves comfortable margin at room temperature; for sealed enclosures consider derating to 70 C ambient to protect the OTP memory and reduce long-term retention risk.
Informations de conformité
RoHS, REACH, lead-free and halogen-free status were not provided in the verified web data; marked [DATA_NEEDED]. The 'I' suffix indicates industrial temperature grade, not automotive AEC-Q100 qualification.
