PIC16C65AT-10I/PT - 8-bit OTP MCU, 7KB, 192B RAM, 33 I/O, 44-TQFP
MPN: PIC16C65AT-10I/PT ✗ Cuối đờiPIC16C65AT-10I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer that combines a CPU, memory (program + data), and configurable peripherals. Within the broader semiconductor taxonomy, MCUs belong to the embedded processor category, which itself falls under digital logic ICs. 8-bit microcontrollers like the PIC16C65A target cost-sensitive, deterministic control tasks where on-chip OTP/EPROM program memory and bit-manipulation instructions provide a compact, low-power solution for appliances, industrial controls, and instrumentation front-ends.
Key features of the PIC16C65AT-10I/PT include a 14-bit instruction word with 8-bit data path, hardware multiplier, programmable code protection, in-circuit serial programming via ICSP, power-saving SLEEP mode, watchdog timer with on-chip RC oscillator, brown-out reset, and multiple timer/counter and capture/compare/PWM peripherals. The OTP program memory allows prototype-to-production flexibility without mask charges, while the -I (industrial) suffix extends operation down to -40C.
Architecturally, the device uses a Harvard-style bus with separated program and data memories, enabling simultaneous instruction fetch and operand access. The on-chip EPROM cell array (accessed through OTP window-less packaging on this 'C' revision) gives non-volatile storage while keeping per-unit cost low for medium-volume production.
Typical applications include industrial control panels, instrumentation data acquisition, motor drive sequencing, sensor signal conditioning, embedded security panels, and communication bridge controllers. Its 33 I/O and 192-byte RAM also suit keypad scanning, LED multiplexing, and small protocol stacks. When migrating from this OTP part, engineers typically move to the flash-based PIC16F877A or PIC18F family for in-system reprogrammability, sharing the same 44-pin TQFP footprint on most variants. This page consolidates distributor pricing, drop-in alternatives, and design notes that go beyond what the manufacturer datasheet alone provides.
Bộ thay thế dễ dàng lắp đặt cho PIC16C65AT-10I/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 PIC16C65AT-10I/PT (cùng hình factor và footprint) — khác nhau ở Package, Timers, Program Memory Size, Core Architecture, Operating Temperature.
PIC16F877A-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F877-20I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65AT-04I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-20I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65A-10I/PQ
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C65AT-10I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit RISC (PIC) |
| Family | PIC16CXX (PIC16C65A) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 x 8 bytes |
| Number of I/O | 33 |
| Tần số xung maksimum | 10 MHz |
| Instruction Cycle | 200 ns at 10 MHz |
| Supply Voltage (Vdd) | 4.0 V to 6.0 V |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp / Vỏ | 44-pin TQFP (PT) |
| Kiểu lắp đặt | Surface Mount |
| Oscillator Type | External |
| Packaging | Tape & Reel (TR) |
| Peripherals | Timers, CCP, USART, Parallel Slave Port |
Cấu hình chân PIC16C65AT-10I/PT
| Chân 1 | OSC1/CLKIN — Oscillator crystal input or external clock input |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Chân 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input 2 / ADC VREF- |
| Chân 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Chân 8 | RE0/RD/AN5 — PORTE bit 0 / parallel port read / analog input 5 |
| Chân 9 | RE1/WR/AN6 — PORTE bit 1 / parallel port write / analog input 6 |
| Chân 10 | RE2/CS/AN7 — PORTE bit 2 / parallel port chip select / analog input 7 |
| Chân 11 | VDD — Positive supply voltage |
| Chân 12 | VSS — Ground reference |
| Chân 13 | OSC2/CLKOUT — Oscillator crystal output or clock out |
| Chân 14 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 15 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Chân 16 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Chân 17 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 18 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 19 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 20 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Chân 21 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Chân 22 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Chân 23 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Chân 24 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Chân 25 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Chân 26 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Chân 27 | RD5/PSP5 — PORTD bit 5 / parallel slave port bit 5 |
| Chân 28 | RD6/PSP6 — PORTD bit 6 / parallel slave port bit 6 |
| Chân 29 | RD7/PSP7 — PORTD bit 7 / parallel slave port bit 7 |
| Chân 30 | VSS — Ground reference |
| Chân 31 | Vdd — Positive supply voltage |
| Chân 32 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 33 | RB1 — PORTB bit 1 |
| Chân 34 | RB2 — PORTB bit 2 |
| Chân 35 | RB3/PGM — PORTB bit 3 / LVP programming pin |
| Chân 36 | RB4 — PORTB bit 4 |
| Chân 37 | RB5 — PORTB bit 5 |
| Chân 38 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 39 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 40 | MCLR/Vpp — Master clear reset / programming voltage |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16C65AT-10I/PT phù hợp cho 6 Áp dụngs: Industrial Control Panel Logic, Instrumentation Data Acquisition Front-End, Embedded Security Alarm Panels, Motor Drive Sequencing Controller, Communication Bridge / Protocol Converter, Consumer Appliance Control.
Industrial Control Panel Logic
The PIC16C65AT-10I/PT fits industrial control panels because its 33 digital I/O handle keypad scanning, indicator multiplexing, and discrete actuator drive, and its 192-byte RAM supports state-machine buffers for relay sequencing. The 7 KB OTP program memory holds ladder-logic-style decision trees for pump, valve, and conveyor coordination, and the 10 MHz CPU executes scan cycles within typical 10-50 ms PLC windows. Industrial-grade -40 C to +85 C operation survives cabinet temperature swings, and the external oscillator lets designers pick crystals for noise-immune timing in motor-control cabinets.
Được đề xuất
Instrumentation Data Acquisition Front-End
For low-speed instrumentation front-ends, the PIC16C65AT-10I/PT captures sensor signals with its on-chip ADC and timers, while 192 bytes RAM buffer sampled readings before UART/USART transmission to a host. The PIC16C65A's 33 I/O let designers route SPI/I2C peripherals, LCD displays, and rotary encoders without external mux logic. With 7 KB OTP, firmware for linearization, calibration tables, and SCPI-style command parsing fits comfortably, and the 10 MHz core delivers deterministic timing for synchronous-sampling anti-aliasing filters.
Được đề xuất
Embedded Security Alarm Panels
The PIC16C65AT-10I/PT is well-suited for security alarm panels: 33 I/O scan 8-16 zones of PIR, reed-switch, and smoke-detector inputs while driving piezo buzzers, LED indicators, and dialer outputs. With 192 bytes RAM, the firmware can hold per-zone debounce counters and event queues for dial-out sequences. OTP storage of 7 KB fits encrypted PIN logic and zone-config tables, and the SLEEP + watchdog timer combination extends battery-backed standby for years while ensuring firmware-locked code protection via the PIC16C65A's code-protect fuse.
Được đề xuất
Motor Drive Sequencing Controller
In motor drive sequencers, the PIC16C65AT-10I/PT generates PWM waveforms using its CCP module to command stepper or brushless-DC drivers across 33 I/O, and its 192-byte RAM holds trapezoidal acceleration profiles for two simultaneous axes. The 10 MHz instruction cycle produces 50 ns resolution on commutation events, sufficient for 20 kHz PWM at 1% duty-cycle steps. OTP code protection secures proprietary commutation algorithms in OEM drives, and the industrial temperature grade supports under-hood automotive or HVAC compressor control environments.
Được đề xuất
Communication Bridge / Protocol Converter
For protocol bridge applications, the PIC16C65AT-10I/PT can implement UART-to-SPI, UART-to-I2C, or RS-232-to-RS-485 converters using its integrated USART plus bit-banged peripherals across 33 I/O. With 7 KB OTP, a Modbus-RTU to Modbus-ASCII gateway or a custom telemetry translator fits comfortably, while 192 bytes RAM holds receive/transmit buffers for half-duplex turnaround. The 44-pin TQFP exposes the parallel slave port, which can directly interface 8-bit bus hosts for legacy industrial busses without external glue logic.
Được đề xuất
Consumer Appliance Control
The PIC16C65AT-10I/PT serves as the controller in washing machines, dishwashers, and microwave ovens where 33 I/O drive 7-segment displays, keypads, buzzer, and triac interfaces, and 192-byte RAM supports cycle-state machines. The 7 KB OTP accommodates wash programs, fault diagnostics, and user-interface menus at low unit cost. Industrial temperature rating covers appliance compartment heat, and the low-power SLEEP mode keeps standby power below regulatory limits while the watchdog timer ensures reliable recovery from brown-out events.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C65AT-10I/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 | PIC16F877A-I/PT | PIC16F877-20I/PT | PIC16C65AT-04I/PT | PIC16C65A-20I/PQ | PIC16C65A-10I/PQ |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP EPROM (4K x 14) | 14 KB Flash | 14 KB Flash | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM |
| RAM Size | 192 bytes | 368 bytes | 368 bytes | 192 bytes | 192 bytes | 192 bytes |
| Max Clock Frequency | 10 MHz | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 10 MHz |
| Number of I/O | 33 | 33 | 33 | 33 | 33 | 33 |
| Memory Type | OTP (one-time programmable) | Flash (in-system reprogrammable) | Flash (in-system reprogrammable) | OTP | OTP | OTP |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
Bảo phân biệt quan trọng
- Direct flash-based successor with same 44-TQFP footprint (vsPIC16F877A-I/PT)
- Higher clock-speed variant in identical package (vsPIC16C65A-20I/PQ)
- Lower-speed variant for power-sensitive applications (vsPIC16C65AT-04I/PT)
Ghi chú thiết kế
Place a 10 uF tantalum + 100 nF ceramic decoupling pair within 1 cm of the Vdd pins (11 and 31). The 44-TQFP has two Vdd/Vss pairs; bypass each independently. Add bulk capacitance on the board's main 5 V rail because the PIC16C65A's ADC can inject switching noise back into Vdd during analog-to-digital conversions, which corrupts readings on adjacent analog channels.
Route the crystal traces (OSC1/OSC2) with short, symmetric lengths under 1 cm and guard them with a ground pour on both sides of the PCB stackup. The 10 MHz fundamental mode tolerates moderate layout error, but overtone crystals need a series resistor and load-cap selection per the PIC16C65A datasheet. Keep digital switching traces away from OSC1/OSC2 to avoid jitter above 50 ppm.
The PIC16C65A OTP cell can be programmed only once - there is no erase window on the 'C' (windowless) revision. Always validate firmware on a PIC16F877A or PIC16C65A JW (windowed) sample before committing to a production lot of PIC16C65AT-10I/PT, otherwise an OTP programming mistake bricks the entire batch. Budget a 1-2% reject rate for production OTP programming.
The MCLR/Vpp pin requires a 10-50 kohm pull-up to Vdd for normal operation and must be driven low only for reset or HV programming. Add a 100 nF cap from MCLR to ground to filter noise spikes that can falsely reset the device in industrial environments with motor or relay transients. In HV programming mode, do not exceed Vpp = 13.5 V or the OTP cells will be overstressed.
Thông tin tuân thủ
Compliance flags not present in the verified distributor data; PIC16C65AT-10I/PT predates widespread RoHS conversion. For RoHS-compliant builds, migrate to PIC16F877A-I/PT which is fully compliant in the same 44-TQFP package.