PIC16C65B-04E/PT - 7KB OTP 8-Bit MCU, 4MHz, TQFP-44 | Microchip
MPN: PIC16C65B-04E/PT ✗ Cuối đờiPIC16C65B-04E/PT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC16C65B-04E/PT — 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 PIC16C65B-04E/PT (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature Range, Timers, Program Memory Type, ADC.
PIC16C65B-04E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C65B-04E/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65BT-04E/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C65B-04E/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-04E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F877A-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65B-04E/PT Tỷ lệ tối đa & tính chất điện
| 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 |
| Khoảng nhiệt độ hoạt động | -40 °C to +125 °C (Extended) |
| Hộp / Vỏ | 44-pin TQFP (PT), surface-mount |
| Kiểu lắp đặt | 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 |
Cấu hình chân PIC16C65B-04E/PT
| Chân 1 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 2 | OSC2/CLKOUT — Oscillator output (crystal mode) or instruction cycle clock (RC mode) |
| Chân 3 | MCLR/VPP — Master clear reset (active low) / programming voltage input |
| Chân 4 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Chân 5 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Chân 6 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Chân 7 | RA3/AN3/VREF — Port A bit 3 / analog input 3 / voltage reference |
| Chân 8 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Chân 9 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | RB0/INT — Port B bit 0 / external interrupt input |
| 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/PGC — Port B bit 6 / in-circuit debugger clock |
| Chân 19 | RB7/PGD — Port B bit 7 / in-circuit debugger data |
| Chân 20 | VSS — Ground reference |
| Chân 21 | VDD — Positive supply voltage |
| Chân 22 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 23 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 output |
| Chân 24 | RC2/CCP1 — Port C bit 2 / CCP1 I/O |
| Chân 25 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Chân 26 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Chân 27 | RC5/SDO — Port C bit 5 / SPI data out |
| Chân 28 | RC6/TX/CK — Port C bit 6 / USART transmit / USART clock |
| Chân 29 | RC7/RX/DT — Port C bit 7 / USART receive / USART data |
| Chân 30 | VSS — Ground reference |
| Chân 31 | VDD — Positive supply voltage |
| Chân 32 | RD0/PSP0 — Port D bit 0 / parallel slave port bit 0 |
| Chân 33 | RD1/PSP1 — Port D bit 1 / parallel slave port bit 1 |
| Chân 34 | RD2/PSP2 — Port D bit 2 / parallel slave port bit 2 |
| Chân 35 | RD3/PSP3 — Port D bit 3 / parallel slave port bit 3 |
| Chân 36 | RD4/PSP4 — Port D bit 4 / parallel slave port bit 4 |
| Chân 37 | RD5/PSP5 — Port D bit 5 / parallel slave port bit 5 |
| Chân 38 | RD6/PSP6 — Port D bit 6 / parallel slave port bit 6 |
| Chân 39 | RD7/PSP7 — Port D bit 7 / parallel slave port bit 7 |
| Chân 40 | VSS — Ground reference |
| Chân 41 | VDD — Positive supply voltage |
| Chân 42 | RE0/RD/AN5 — Port E bit 0 / read control for PSP / analog input 5 |
| Chân 43 | RE1/WR/AN6 — Port E bit 1 / write control for PSP / analog input 6 |
| Chân 44 | RE2/CS/AN7 — Port E bit 2 / chip select for PSP / analog input 7 |
Ứng dụng tiêu biểu
PIC16C65B-04E/PT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C65B-04E/PT — 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 | 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) |
Bảo phân biệt quan trọng
- Extended temperature grade (-40 °C to +125 °C) in the TQFP-44 package (vsPIC16C65B-04I/PT)
- Field-reprogrammable Flash memory at a 4x faster clock (vsPIC16C65B-04I/PT)
- Same-die drop-in with 100% register compatibility in a tape-and-reel format (vsPIC16C65B-04/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
