PIC17C43T-25E/PT - 8KB OTP 8-bit MCU, 25MHz, 44-TQFP | Microchip
MPN: PIC17C43T-25E/PT ✗ Tapus ng BuhayPIC17C43T-25E/PT Ulas
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, program memory (ROM/OTP/Flash), working RAM, peripherals, and I/O into one package. The PIC17C family belongs to the broader PIC microcontroller taxonomy (PIC10/12/16/17/18/24/dsPIC), which Microchip subdivides by data width, instruction set and peripheral richness. Within power-management and control hierarchies, the PIC17C line sits between baseline PIC16 devices and enhanced PIC18 devices, offering a wider instruction set, hardware multiply, and an external-memory bus on selected die variants for legacy designs migrating from 80C51-class controllers.
Key features of the PIC17C43T-25E/PT include a RISC architecture with only 58 single-cycle instructions, dual 8-bit timer/counters with 16-bit read/write, a 16-bit capture input, a 16-bit PWM output, a hardware USART with addressable transmit/receive buffer, and an 8-channel 10-bit (typical) successive-approximation ADC. The Extended (E) temperature grade supports -40C to +125C operation, and the /PT suffix designates a 44-pin TQFP package supplied in Tape & Reel packaging for high-volume SMT assembly. The device also exposes an external-memory interface capable of addressing up to 64 Kbytes of external program memory and 64 Kbytes of external data memory, which is unusual for a modern 8-bit MCU.
Typical applications include industrial automation controllers, automotive subsystems (where the E temperature grade matters), consumer-electronics keypads and remote-control transmitters, motor control for small DC/stepper drives, instrumentation front ends, and legacy embedded designs migrating from older 80C51 or PIC16 platforms. The combination of OTP memory, wide temperature range, and an external memory bus makes the PIC17C43T-25E/PT a strong fit for production-volume designs that must remain code-locked while still tolerating harsh environments.
When designing with this device, engineers must provide a 5 V regulated supply, an external clock source (oscillator type is listed as External in the manufacturer data), and observe the OTP programming window (typically high-voltage VPP). Modern replacements from Microchip such as the PIC18F family offer Flash memory and lower power, but the PIC17C43T-25E/PT remains preferred where field-proven PIC17C code bases, OTP security, or long-term stability of the PIC17 silicon revision are required.
Mga alternatibo na pwedeng ilagay na PIC17C43T-25E/PT — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok PIC17C43T-25E/PT (parehas na form factor at footprint) — pagkakaiba sa Package, Program Memory Type, Core Architecture, Operating Temperature Range, Program Memory Size.
PIC17C43-25E/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC17C43T-25/PQ
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC17C43T-16/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC17C42AT-25E/PQ
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC17C43-16I/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC17C43T-25E/PT Mga Pinakamataas na Rating at Electrical Characteristics
| Product Family | PIC17C |
| Core Type | 8-bit RISC |
| Program Memory Size | 8 KB (4K x 16) OTP |
| RAM Size | 454 bytes |
| Maksimum na Taktiko ng Oras | 25 MHz |
| Instruction Cycle Time | 160 ns (typical) at 25 MHz |
| Number of I/O Pins | 33 |
| Packhaging / Kaso | 44-TQFP (PT) |
| Oscillator Type | External |
| Supply Voltage na Operasyon | 5 V (typical, +/- 10%) |
| Hanay ng Temperature na Operasyon | -40C to +125C (Extended grade) |
| ADC Resolution | 10-bit (8 channels, typical) |
| Timers | Two 8-bit / one 16-bit timer/counter |
| Communication Interfaces | Hardware USART (SCI), SSP (SPI/I2C on selected variants) |
| PWM | 16-bit PWM output (1 channel, typical) |
| External Memory Bus | Up to 64K program + 64K data (per datasheet) |
| Uri ng Pagpapasok | Surface Mount (TQFP) |
| Packaging | Tape & Reel (TR) |
| Tindminan RoHS | Compliant |
| Temperature Grade | Extended (E) |
Gabay sa Pin Configuration ng PIC17C43T-25E/PT 44-tqfp (pt)
Pin configuration para sa PIC17C43T-25E/PT (44-tqfp (pt) package). Kasama sa digital IC na ito ang GPIO, mga communication interface (UART, SPI, I2C), at mga power pin. Sumangguni sa datasheet ng manufacturer para sa mga alternatibong function ng pin at mga opsyon sa configuration. Mahalaga para sa disenyo ng embedded system at PCB layout.
Wala ng detalyadong pinout data na magagamit para sa PIC17C43T-25E/PT.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
PIC17C43T-25E/PT ay nararapat para sa 6 aplikasyons: Industrial Automation Controllers, Automotive Subsystem ECUs, Consumer Electronics Keypads and Remote Controls, Small Motor and Stepper Drive Controllers, Instrumentation and Data-Acquisition Front Ends, Legacy 80C51 Migration Designs.
Industrial Automation Controllers
The PIC17C43T-25E/PT suits industrial automation PLC sub-modules, sensor-conditioning boards and panel-meter controllers. Its 8-bit RISC core delivers deterministic 160 ns instruction cycles at 25 MHz, well above the typical 1 ms scan budget for 100-step ladder logic emulation. The 33 digital I/O pins handle key matrix inputs, relay drive outputs and status LEDs without external muxing. The hardware USART supports RS-232/RS-485 protocol transceivers, while the 10-bit ADC (8 channels, typical) reads 4-20 mA transducer loops. Extended -40C to +125C temperature grade lets the design survive unheated cabinet environments near motors or power supplies.
Inirekomenda
Automotive Subsystem ECUs
The PIC17C43T-25E/PT is well matched to legacy automotive subsystems such as body controllers, HVAC blend-door drivers, instrument cluster slaves and lighting controllers. The Extended -40C to +125C temperature grade covers under-hood and cabin extremes, while the 5 V supply voltage aligns with traditional 12 V battery rails after regulation. The 16-bit PWM output drives small DC fans and proportional valves, and the capture input reads Hall-effect or optical encoder feedback. The OTP program memory locks the firmware for the life of the vehicle, preventing unauthorized reflashing - a common requirement in safety-relevant automotive ECUs.
Inirekomenda
Consumer Electronics Keypads and Remote Controls
The PIC17C43T-25E/PT powers universal remote controls, microwave-oven keypads, washing-machine HMI boards and small home-appliance controllers. Its 33 I/O pins scan a 4x5 matrix keypad plus drive a 7-segment LED or character LCD, eliminating external I/O expanders. The hardware USART links to Bluetooth or Wi-Fi bridge modules for IoT retrofits. OTP memory secures the firmware against cloning of IR protocols. The 25 MHz core handles debounce, RC5/SIRC decoding and LCD refresh in a single-cycle loop without timing overruns.
Inirekomenda
Small Motor and Stepper Drive Controllers
The PIC17C43T-25E/PT controls small BLDC, DC and stepper motors in printers, scanners and 3D-printer carriage drives. The 16-bit PWM output and capture input implement closed-loop velocity control at typical 20 kHz switching, while the 33 I/O pins drive H-bridge gate signals, end-stop sensors and quadrature encoders. The Extended temperature grade suits enclosed stepper-driver enclosures. The 8 KB OTP holds state-machine code plus ramp tables without external memory, and the external-memory bus lets designers add SRAM for look-up tables on larger stepper projects.
Inirekomenda
Instrumentation and Data-Acquisition Front Ends
The PIC17C43T-25E/PT serves as a front-end controller in portable digital multimeters, data loggers and bench-top instrumentation. The 8-channel 10-bit ADC (typical) reads thermocouples, strain gauges and process-voltage inputs, while the hardware USART streams samples to a host PC or display. The 25 MHz core executes linearization and cold-junction compensation in real time without off-chip DSP. The -40C to +125C Extended range lets the design operate in field environments from arctic surveys to engine-test cells, and the OTP memory secures calibration constants from end-user tampering.
Inirekomenda
Legacy 80C51 Migration Designs
The PIC17C43T-25E/PT is a frequent target when migrating legacy 80C51/8051 designs onto a more deterministic RISC core. The 8 KB OTP and external-memory bus (up to 64K words) match typical 8051 code/data footprints, while the single-cycle instruction set replaces 12-clock 8051 cycles and roughly doubles throughput at the same crystal. The 44-pin TQFP footprint supports a one-to-one PCB replacement of legacy 8051 PLCC-44 designs. OTP memory protects proprietary algorithms, and the Extended temperature grade preserves industrial temperature specs across the redesign.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for PIC17C43T-25E/PT — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | PIC17C43-25E/PT | PIC17C43T-25/PQ | PIC17C43T-16/PT | PIC17C42AT-25E/PQ | PIC17C43-16I/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (PT) | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same | 44-TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory | 8 KB OTP | 8 KB OTP | 8 KB OTP | 8 KB OTP | 4 KB OTP (-50%) | 8 KB OTP |
| Maximum Clock Frequency | 25 MHz | 25 MHz | 25 MHz | 16 MHz (-36%) | 25 MHz | 16 MHz (-36%) |
| Operating Temperature Range | -40C to +125C (Extended) | -40C to +125C (Extended) | 0C to +70C (Commercial) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| RAM Size | 454 bytes | 454 bytes | 454 bytes | 454 bytes | 454 bytes | 454 bytes |
| Number of I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Program Memory Type | OTP | OTP | OTP | OTP | OTP | OTP |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
Pangunahing mga Pagkakaiba
- Highest program memory and widest temperature range within the PIC17C43 44-TQFP family (kumpara saPIC17C42AT-25E/PQ)
- Same Extended temperature grade as the -25/PQ sibling (kumpara saPIC17C43T-25/PQ)
- Highest clock speed in the 44-TQFP Extended-temp PIC17C43 family (kumpara saPIC17C43T-16/PT)
Talaan ng Disenyo
The PIC17C43T-25E/PT requires a regulated 5 V +/- 10% supply; the manufacturer's recommended bulk decoupling is a 10 uF tantalum or low-ESR electrolytic capacitor at VDD with a 0.1 uF ceramic placed within 5 mm of the VDD pin. For battery or automotive 12 V sources, add a switching preregulator such as MC33063 with an LC pi-filter to keep switching ripple below 50 mVpp, otherwise the analog ADC readings and PWM edges can pick up supply-born jitter.
Place the external clock source (crystal, resonator, or external oscillator) within 10 mm of the OSC1/OSC2 pins and guard the traces against parallel routing near PWM or relay-drive outputs. Keep ADC analog inputs (RA0-RA7) on one PCB side and switch the digital I/O to the other side of the package to minimize cross-coupling; this layout preserves the 10-bit ADC accuracy under heavy digital switching at 25 MHz.
Do not exceed the maximum VPP high-voltage programming voltage during OTP programming, or the device will be permanently damaged. Always verify the OTP programming waveform with a programmer such as MPLAB PM3, never bypass the VPP rise/fall time limits specified in DS30412C. Avoid routing analog references (VREF+, VREF-) under digital traces, since the 10-bit ADC (typical) is sensitive to ground-bounce; do not leave unused I/O pins floating - configure them as outputs or inputs with the internal weak pull-up enabled to minimize ICC leakage.
Impormasyon ng Pagsunod sa Kautusan
RoHS compliant per Microchip product page (PIC17C4X datasheet DS30412C). Not AEC-Q100 qualified - the PIC17C43T-25E/PT is Extended temperature grade but does not carry automotive-process certification. HALogen-free per Microchip Pb-free/HALogen-free declaration.