PIC16C65B-04E/PT - 7KB OTP 8-Bit MCU, 4MHz, TQFP-44 | Microchip
N.º da peça: PIC16C65B-04E/PT ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.68 | $3,68 |
| 10 | $3.45 | $34,50 |
| 100 | $3.12 | $312,00 |
| 500 | $2.85 | $1.425,00 |
| 1.000 | $2.62 | $2.620,00 |
PIC16C65B-04E/PT Visão geral
What is an OTP microcontroller? An OTP (One-Time-Programmable) microcontroller is a type of embedded MCU whose program memory is implemented as EPROM rather than Flash or ROM. EPROM-based MCUs can be programmed exactly once using a device programmer (such as the MPLAB PM3) before being locked into the application firmware. They are commonly used in cost-sensitive, high-volume production where firmware changes are not expected after deployment, and they sit in the broader hierarchy: microcontroller -> embedded MCU -> microprocessor -> semiconductor.
The PIC16C65B employs Microchip's enhanced mid-range RISC architecture with a 14-bit instruction word, two 8-bit timer/counters, a capture/compare/PWM module, a USART for serial communications, and an 8-bit parallel slave port. It includes an integrated watchdog timer with on-chip RC oscillator for reliable operation in noisy environments, plus a brown-out reset circuit and power-on reset for robust startup behavior.
Typical low-power figures include 5 mA typical at 5 V / 4 MHz and as low as 1 µA typical in sleep mode at 3 V / 32 kHz, enabling battery-friendly designs. The PIC16C65B is commonly deployed in motor control (H-bridge drivers, small BLDC controllers), industrial sensor interfaces (4-20 mA loops, RTD conditioning boards), automotive body electronics (mirror controllers, HVAC actuators), appliance control (washing machine front panels, oven timers), and embedded security panels requiring deterministic 8-bit control.
A key design consideration for the PIC16C65B is its OTP program memory: since firmware is locked in after programming, the device cannot be re-flashed in-circuit. Engineers should plan for factory programming via the MPLAB PM3 or equivalent programmer and verify firmware thoroughly before committing to production. This page synthesizes distributor pricing, same-package drop-in alternatives within the PIC16C65B family, and practical design notes that complement the Microchip datasheet.
Alternativas drop-in para PIC16C65B-04E/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16C65B-04E/PT (mesmo formato e footprint) — diferindo em Package, Operating Temperature Range, Timers, Program Memory Type, ADC.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16C65B-04E/PT
✅ Drop-In✓ Em estoque
$2.62 / unidade
Ver ficha técnica →PIC16C65B-04I/PT
✅ Drop-In✓ Em estoque
$7.1 / unidade
Ver ficha técnica →PIC16C65B-04/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16C65B-04E/PQ
✅ Drop-In✓ Em estoque
$11.1 / unidade
Ver ficha técnica →PIC16C65BT-04E/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16C65B-04E/L
✅ Drop-In✓ Em estoque
$10.85 / unidade
Ver ficha técnica →PIC16C65A-04E/PT
✅ Drop-In✓ Em estoque
$10.4 / unidade
Ver ficha técnica →PIC16F877A-I/PT
✅ Drop-In✓ Em estoque
$4.95 / unidade
Ver ficha técnica →PIC16C65B-04E/PT Classificações máximas e características elétricas
| Core Architecture | PIC16CXX mid-range 8-bit RISC |
| Instruction Word | 14-bit |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 bytes |
| Number of I/O Pins | 33 |
| Maximum Clock Speed | 4 MHz |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Faixa de temperatura de operação | -40 °C to +125 °C (Extended) |
| Encapsulamento / Caixa | 44-pin TQFP (PT), surface-mount |
| Tipo de montagem | Surface Mount |
| Peripherals | 2x 8-bit timers, 1x CCP, USART, Parallel Slave Port, watchdog timer, brown-out reset, POR |
| Typical Active Current | 5 mA at 5 V, 4 MHz |
| Typical Sleep Current | 1 µA at 3 V, 32 kHz |
| Speed Grade Suffix | /04 = 4 MHz oscillator input |
| Temperature Grade Suffix | /E = Extended -40 °C to +125 °C |
Configuração de pinos do PIC16C65B-04E/PT
| Pino 1 | OSC1/CLKIN — Oscillator input / external clock input |
| Pino 2 | OSC2/CLKOUT — Oscillator output (crystal mode) or instruction cycle clock (RC mode) |
| Pino 3 | MCLR/VPP — Master clear reset (active low) / programming voltage input |
| Pino 4 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Pino 5 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Pino 6 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Pino 7 | RA3/AN3/VREF — Port A bit 3 / analog input 3 / voltage reference |
| Pino 8 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pino 9 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| Pino 10 | VSS — Ground reference |
| Pino 11 | VDD — Positive supply voltage |
| Pino 12 | RB0/INT — Port B bit 0 / external interrupt input |
| Pino 13 | RB1 — Port B bit 1 |
| Pino 14 | RB2 — Port B bit 2 |
| Pino 15 | RB3 — Port B bit 3 |
| Pino 16 | RB4 — Port B bit 4 |
| Pino 17 | RB5 — Port B bit 5 |
| Pino 18 | RB6/PGC — Port B bit 6 / in-circuit debugger clock |
| Pino 19 | RB7/PGD — Port B bit 7 / in-circuit debugger data |
| Pino 20 | VSS — Ground reference |
| Pino 21 | VDD — Positive supply voltage |
| Pino 22 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pino 23 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 output |
| Pino 24 | RC2/CCP1 — Port C bit 2 / CCP1 I/O |
| Pino 25 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Pino 26 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Pino 27 | RC5/SDO — Port C bit 5 / SPI data out |
| Pino 28 | RC6/TX/CK — Port C bit 6 / USART transmit / USART clock |
| Pino 29 | RC7/RX/DT — Port C bit 7 / USART receive / USART data |
| Pino 30 | VSS — Ground reference |
| Pino 31 | VDD — Positive supply voltage |
| Pino 32 | RD0/PSP0 — Port D bit 0 / parallel slave port bit 0 |
| Pino 33 | RD1/PSP1 — Port D bit 1 / parallel slave port bit 1 |
| Pino 34 | RD2/PSP2 — Port D bit 2 / parallel slave port bit 2 |
| Pino 35 | RD3/PSP3 — Port D bit 3 / parallel slave port bit 3 |
| Pino 36 | RD4/PSP4 — Port D bit 4 / parallel slave port bit 4 |
| Pino 37 | RD5/PSP5 — Port D bit 5 / parallel slave port bit 5 |
| Pino 38 | RD6/PSP6 — Port D bit 6 / parallel slave port bit 6 |
| Pino 39 | RD7/PSP7 — Port D bit 7 / parallel slave port bit 7 |
| Pino 40 | VSS — Ground reference |
| Pino 41 | VDD — Positive supply voltage |
| Pino 42 | RE0/RD/AN5 — Port E bit 0 / read control for PSP / analog input 5 |
| Pino 43 | RE1/WR/AN6 — Port E bit 1 / write control for PSP / analog input 6 |
| Pino 44 | RE2/CS/AN7 — Port E bit 2 / chip select for PSP / analog input 7 |
Aplicações típicas
PIC16C65B-04E/PT é adequado para 6 aplicaçãos: Automotive Body Electronics, Industrial Sensor Interface & 4-20 mA Loop, Motor Control & Small BLDC Drivers, Appliance Control Boards, Embedded Security & Access Panels, HVAC & Climate Sensors.
Automotive Body Electronics
The PIC16C65B-04E/PT's extended -40 °C to +125 °C temperature range and 33 GPIO pins suit it to automotive body controllers including power mirror modules, HVAC damper actuators, and seat position controllers. The PIC16C65B's integrated USART enables LIN-bus master/slave communication with body domain controllers, while the CCP module drives PWM outputs for DC motor speed control. With 7 KB OTP program memory and 192 bytes RAM, the part can host full state-machine firmware for mirror-fold and seat-position routines without external memory. The on-chip watchdog timer and brown-out reset deliver the robustness automotive OEMs expect for underhood and cabin modules. The 4 MHz instruction rate is sufficient for 10 ms LIN response windows and 100 Hz motor control loops.
Recomendado
Industrial Sensor Interface & 4-20 mA Loop
In industrial 4-20 mA current-loop transmitters and RTD conditioning boards, the PIC16C65B-04E/PT serves as the local microcontroller that linearizes sensor readings and modulates the loop current. The 33 I/O pins interface to multiple analog sensor channels through external op-amps (e.g., MCP6N11), while the on-chip 8-bit ADC digitizes conditioned signals for firmware-side calibration. With 7 KB OTP, the device stores factory calibration tables and protocol handlers for HART or Modbus RTU over the USART. The extended temperature grade supports outdoor installations and process plants. The 1 µA sleep current enables battery-assisted loop power budgets for wireless retrofit sensors that wake periodically to transmit.
Recomendado
Motor Control & Small BLDC Drivers
The PIC16C65B-04E/PT is well-matched to small brushless DC (BLDC) and brushed DC motor controllers for fans, pumps, and small appliances. The CCP module generates a 20 kHz PWM drive signal at 10-bit resolution, while two 8-bit timers handle back-EMF zero-crossing detection and commutation timing. With 33 I/O pins, the MCU directly drives a 3-phase gate driver (e.g., MCP8024) without external logic. The 4 MHz CPU throughput sustains sensorless trapezoidal commutation at up to 30,000 RPM with a 4-pole rotor. Brown-out reset and the on-chip watchdog protect the motor from firmware stalls that could otherwise latch a phase high.
Recomendado
Appliance Control Boards
The PIC16C65B-04E/PT powers control boards in white goods such as washing machines, dishwashers, and oven timers where the firmware is finalized before production. The 7 KB OTP hosts full state-machine code for cycle sequencing, water-level detection, and user interface handling without needing external memory. The USART drives LED/VFD display drivers, while the parallel slave port interfaces to LED matrix or 7-segment modules. Extended temperature operation supports under-counter and unventilated cabinet installations. The PIC16C65B's low 1 µA sleep current is ideal for standby-mode appliances targeting ENERGY STAR idle budgets, where the MCU wakes on button or interrupt events.
Recomendado
Embedded Security & Access Panels
For intrusion alarm panels, access controllers, and fire-alarm annunciators, the PIC16C65B-04E/PT delivers deterministic 8-bit control with OTP firmware that prevents unauthorized field reprogramming. The USART links to GSM/4G alarm communicators and keypad modules, while the 33 I/O pins interface directly to PIR sensors, reed switches, and siren drivers. Brown-out reset and the watchdog timer prevent lock-up conditions that could silence an alarm. With 7 KB OTP, the firmware fits complete multi-zone detection logic plus dialer handshake state machines. The extended temperature grade supports outdoor-rated enclosures and unheated warehouses.
Recomendado
HVAC & Climate Sensors
In HVAC zone controllers, smart thermostats, and air-quality monitors, the PIC16C65B-04E/PT serves as the local MCU that drives triac-based fan/valve outputs and reads temperature/humidity sensors via I2C or analog channels. The CCP module generates the zero-cross-detected phase-angle fire pulses needed for TRIAC dimming and motor speed control. With 33 I/O, the device supports multiple relay outputs, keypad scanning, and an LCD interface without external logic. The extended temperature range suits rooftop and outdoor air-handler installations. OTP firmware locks in calibration constants and OEM-specific feature flags for differentiation across product tiers.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16C65B-04E/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16C65B-04I/PT | PIC16C65B-04/PT | PIC16C65B-04E/PQ | PIC16C65BT-04E/PT | PIC16F877A-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-44 (PT) | TQFP-44 (PT) - same | TQFP-44 (PT) - same | MQFP-44 (PQ) - same pin count | TQFP-44 (PT) - same | TQFP-44 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP EPROM (7 KB / 4K x 14) | OTP EPROM (7 KB / 4K x 14) - same | OTP EPROM (7 KB / 4K x 14) - same | Flash (14 KB) - re-programmable | ||
| Maximum Clock Speed | 4 MHz | 4 MHz - same | 4 MHz - same | 20 MHz - 5x faster | ||
| Operating Voltage Range | 2.5 V to 6.0 V | 2.5 V to 6.0 V - same | 2.5 V to 6.0 V - same | 2.0 V to 5.5 V - similar | ||
| Temperature Range | -40 °C to +125 °C (Extended) | -40 °C to +85 °C (Industrial) | 0 °C to +70 °C (Commercial) | -40 °C to +85 °C (Industrial) | ||
| Number of I/O | 33 | 33 - same | 33 - same | 33 - same | ||
| Lifecycle Status | NRND | NRND | NRND | Active (recommended for new designs) |
Principais diferenciais
- Extended temperature grade (-40 °C to +125 °C) in the TQFP-44 package (vs PIC16C65B-04I/PT)
- Field-reprogrammable Flash memory at a 4x faster clock (vs PIC16C65B-04I/PT)
- Same-die drop-in with 100% register compatibility in a tape-and-reel format (vs PIC16C65B-04/PT)
Notas de projeto
Estimated: At VDD = 5 V, 4 MHz active, the PIC16C65B draws approximately 5 mA typical (per Microchip datasheet). For battery-assisted applications, the 1 µA typical sleep current at 3 V / 32 kHz enables long shelf life. Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD pin (TQFP-44 has multiple VDD/VSS pairs: pins 11/10, 21/20, 31/30, 41/40) and a bulk 10 µF tantalum at the regulator output to handle CCP and USART switching transients.
The TQFP-44 (PT) package requires careful thermal management when used at +125 °C upper temperature. Provide a continuous ground pour beneath the device and stitch vias around the perimeter for heat spreading. Keep the high-current driver traces (CCP1/CCP2 outputs at pins 24/23) short and wide (>= 0.3 mm) to limit ringing that couples into the analog AVdd/AVss rails. Route the crystal traces (OSC1/OSC2 at pins 1/2) symmetrically with a ground guard ring and keep them under 10 mm.
The PIC16C65B uses OTP EPROM and CANNOT be re-flashed like the PIC16F family. Burn firmware once via the MPLAB PM3 before SMT placement, and verify code coverage fully on a windowed/UV-erasable PIC16C65B JW package during development. Do not exceed 6.0 V on VDD or the brown-out reset may latch permanently. MCLR (pin 3) must NOT be left floating - tie through a 10 kΩ pull-up to VDD with optional 100 nF to ground for delayed reset during power-up.
The USART pins (RC6/TX, RC7/RX at pins 28/29) drive CMOS-level signals and benefit from a series 100 Ω resistor for impedance matching when routing to off-board connectors. For the parallel slave port (RD0-RD7, RE0-RE2 at pins 32-39, 42-44), place 10 kΩ pull-ups on the chip-select and read/write strobes to prevent false triggering during power-up. The CCP PWM output (RC2/CCP1 at pin 24) can generate fast edges - keep trace length under 25 mm to limit radiated emissions.
Informações de conformidade
Lifecycle status is NRND (Not Recommended for New Designs) per Microchip. RoHS/REACH/lead-free status not confirmed in the provided data - check the manufacturer product page for the latest compliance documentation. AEC-Q100 not formally qualified, though extended temp range suits many automotive applications.
