PIC16C662T-10/PT - 8-bit OTP MCU, 7KB, 44-TQFP | Microchip
MPN: PIC16C662T-10/PT ✗ Cuối đờiPIC16C662T-10/PT Tóm tắt
An 8-bit microcontroller (MCU) is a small computer-on-a-chip that integrates a CPU, non-volatile program memory, working RAM, digital I/O, and one or more peripherals such as timers, capture/compare, ADC, or communication interfaces into a single IC. PIC16-series MCUs use a Harvard RISC core with a 14-bit instruction word and a fixed program/data bus architecture, positioning them within the broader hierarchy of microcontroller -> embedded controller -> semiconductor device, and historically targeting low-power deterministic real-time control applications.
Key features of the PIC16C662T-10/PT include 7 KB of on-chip OTP EPROM, 128 bytes of RAM, multiple timers, capture/compare/PWM peripherals, a 10 MHz maximum operating frequency, and an industrial-relevant operating temperature range. The 44-TQFP package provides 33+ general-purpose I/O pins, suitable for parallel display driving, keypad scanning, and multi-channel sensor interfaces. The OTP memory enables low-cost prototyping with a mature toolchain.
From an architecture perspective, the device uses a Harvard RISC core with separate program and data buses, allowing instruction fetch and data access to occur in the same cycle. The 14-bit instruction set is fixed-width for deterministic timing, and integrated brown-out reset, watchdog timer, and power-on reset support robust embedded operation. The OTP memory is one-time programmable in production units and is windowed-erasable in ceramic-DIP variants of the PIC16C662 family.
Typical applications include industrial control panels, instrument front panels, low-cost keypad/display interfaces, appliance controllers, and legacy embedded products that were designed around the PIC16C family during the 1990s. Its deterministic core and rich I/O set make it well suited to real-time bit-banging, multi-channel sensor multiplexing, and slow-bus peripheral bridging.
When designing with this part, note that OTP memory cannot be re-programmed in-circuit, so firmware validation must be completed on a windowed (JW) or flash-equivalent (PIC16F) variant before committing to OTP. Decoupling must follow Microchip's recommended 100 nF near each VDD/VSS pair, and unused I/O should be left as outputs-low or inputs with weak pull-ups to minimize ICC.
This page synthesizes distributor pricing, drop-in same-package alternatives (including flash variants), and practical design notes not found in the bare manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C662T-10/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 PIC16C662T-10/PT (cùng hình factor và footprint) — khác nhau ở Program Memory Size, Package, Program Memory Type, Timers, Watchdog Timer.
PIC16C662-10/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C662T-10I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C662T-10E/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C662T-04E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C662-20I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C662-20E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C662T-10/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 (Harvard RISC, 8-bit data, 14-bit instruction) |
| Program Memory Type | OTP EPROM (One-Time Programmable) |
| Program Memory Size | 7 KB |
| Tần số xung maksimum | 10 MHz (-10 speed grade) |
| Operating Voltage | 5 V |
| Hộp | 44-pin TQFP (PT) 10x10 mm |
| Kiểu lắp đặt | Surface Mount |
| Series | PIC16C662 |
Cấu hình chân PIC16C662T-10/PT
| Chân 1 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Chân 2 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Chân 3 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Chân 4 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / VREF |
| Chân 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 6 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Chân 7 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 8 | OSC2/CLKOUT — Oscillator output / clock output |
| Chân 9 | RC0 — PORTC bit 0 |
| Chân 10 | RC1 — PORTC bit 1 |
| Chân 11 | RC2 — PORTC bit 2 |
| Chân 12 | RC3 — PORTC bit 3 |
| Chân 13 | RD0 — PORTD bit 0 |
| Chân 14 | RD1 — PORTD bit 1 |
| Chân 15 | RD2 — PORTD bit 2 |
| Chân 16 | RD3 — PORTD bit 3 |
| Chân 17 | RD4 — PORTD bit 4 |
| Chân 18 | RD5 — PORTD bit 5 |
| Chân 19 | RD6 — PORTD bit 6 |
| Chân 20 | RD7 — PORTD bit 7 |
| Chân 21 | VSS — Ground reference |
| Chân 22 | VDD — Positive supply (5V) |
| Chân 23 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 24 | RB1 — PORTB bit 1 |
| Chân 25 | RB2 — PORTB bit 2 |
| Chân 26 | RB3 — PORTB bit 3 |
| Chân 27 | RB4 — PORTB bit 4 |
| Chân 28 | RB5 — PORTB bit 5 |
| Chân 29 | RB6 — PORTB bit 6 |
| Chân 30 | RB7 — PORTB bit 7 |
| Chân 31 | RC4 — PORTC bit 4 |
| Chân 32 | RC5 — PORTC bit 5 |
| Chân 33 | RC6 — PORTC bit 6 |
| Chân 34 | RC7 — PORTC bit 7 |
| Chân 35 | RE0/RD — PORTE bit 0 / parallel port read control |
| Chân 36 | RE1/WR — PORTE bit 1 / parallel port write control |
| Chân 37 | RE2/CS — PORTE bit 2 / parallel port chip select |
| Chân 38 | NC — Not connected (per datasheet) |
| Chân 39 | MCLR/VPP — Master clear reset / programming voltage |
| Chân 40 | NC — Not connected (per datasheet) |
| 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
PIC16C662T-10/PT phù hợp cho 6 Áp dụngs: Industrial Control Panels, Appliance Control Boards, Keypad and Display Interface Modules, Legacy Embedded Instrumentation, Low-Cost Sensor Multiplexers, Hobbyist and Educational Development Boards.
Industrial Control Panels
The PIC16C662T-10/PT fits industrial control panels because its 33+ GPIO pins can drive multiplexed 7-segment displays, scan keypads, and read switch inputs simultaneously without external logic. The Harvard RISC core delivers deterministic 10 MIPS throughput, ensuring predictable response to operator inputs even with debounce, scan, and update routines stacked. The 44-TQFP package supports compact PCB layouts behind HMI glass, while the wide GPIO count eliminates the need for I/O expanders. Unlike higher-pin-count PIC18 parts, the PIC16C662 is sufficient for cost-sensitive factory automation subsystems.
Được đề xuất
Appliance Control Boards
The PIC16C662T-10/PT suits appliance control boards such as washing-machine, dishwasher, and microwave front-end controllers, where its 7 KB OTP program memory holds the full state machine, lookup tables, and timing routines. The integrated capture/compare/PWM peripherals drive triac gate signals, valve relays, and buzzer tones directly, eliminating dedicated timer ICs. The 5V supply matches the linear regulator rails common in white goods, and the 44-TQFP footprint fits behind compact membrane keypads. The PIC16C family was originally designed for exactly this class of mass-produced appliance electronics.
Được đề xuất
Keypad and Display Interface Modules
The PIC16C662T-10/PT is ideal for keypad and display modules because its abundant GPIO pins directly scan 4x4 or 5x5 matrix keypads and drive 16-character LCD or 8-digit 7-segment displays without external drivers. The 10 MIPS throughput supports polled key-debounce and display-refresh routines while leaving CPU headroom for serial communication with the host controller. The 44-TQFP surface-mount package is well suited to small OEM-style interface PCBs that mount behind panel cutouts. Compared with PIC12/16F parts, the PIC16C662 offers more GPIO and timer resources per dollar.
Được đề xuất
Legacy Embedded Instrumentation
The PIC16C662T-10/PT powers legacy embedded instrumentation including laboratory data loggers, multi-channel sensor multiplexers, and protocol-converter bridges originally designed in the late 1990s and early 2000s. The 7 KB OTP program memory holds fixed calibration tables and protocol stacks, while the on-chip ADC and capture/compare peripherals sample slow analog signals and time-stamp events. The 5V supply matches legacy instrumentation power rails, simplifying retrofit service replacement. Field-service engineers continue to stock PIC16C662 series parts for repairing older test and measurement systems.
Được đề xuất
Low-Cost Sensor Multiplexers
The PIC16C662T-10/PT works in low-cost sensor multiplexers that aggregate readings from thermistors, photo-diodes, and switch contacts onto a single serial bus. Its high GPIO count enables direct connection to multiple analog mux ICs and sensor arrays, while the 10 MIPS core can poll, average, and packetize readings in real time. The 44-TQFP package provides a small footprint suitable for distributed sensor-node PCBs. Unlike 28-pin PIC16F alternatives, the PIC16C662 leaves headroom for future channel expansion.
Được đề xuất
Hobbyist and Educational Development Boards
The PIC16C662T-10/PT remains popular in educational settings and hobbyist projects because of its mature documentation, available assembly toolchain, and large GPIO count for breadboard projects. The 7 KB OTP EPROM is enough for student firmware projects exploring timers, interrupts, and serial communication. The 44-TQFP package is best handled with breakout boards or older PICDEM evaluation kits. For teaching deterministic RISC architecture and OTP programming trade-offs, the PIC16C662 is a classic reference design.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C662T-10/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 | PIC16C662-10/PT | PIC16C662T-10I/PT | PIC16C662T-10E/PT | PIC16C662T-04E/PT | PIC16C662-20E/PT | PIC16C662-20I/P |
|---|---|---|---|---|---|---|---|
| Package | TQFP-44 (PT) 10x10 mm | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM |
| Max Clock Frequency | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 4 MHz (-60%) | 20 MHz (+100%) | 20 MHz (+100%) |
| Operating Temperature | 0C to +70C (commercial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +125C (extended) | -40C to +125C (extended) | -40C to +85C (industrial) |
| Operating Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Carrier Format | Tape & Reel (T-suffix) | Tray/Tube (no T-suffix) | Tape & Reel | Tape & Reel | Tape & Reel | Tray/Tube | Tray/Tube (P=PDIP) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
Bảo phân biệt quan trọng
- Tape-and-reel carrier format optimized for SMT assembly (vsPIC16C662-10/PT)
- Industrial temperature grade for harsh environments (vsPIC16C662T-10E/PT)
- Standard 10 MHz speed grade for general-purpose embedded control (vsPIC16C662T-04E/PT)
Ghi chú thiết kế
Estimated: OTP EPROM memory cannot be re-programmed in-circuit. Always validate firmware on a windowed (JW) or flash-equivalent (PIC16F662) variant before committing to OTP production units. Errors in the program image will result in scrapped parts rather than re-flashable recovery. According to Microchip's OTP programming guide, production programming should include signature verification and checksum validation to detect bit-cell failures.
Estimated: Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair, with a bulk 10 uF tantalum or ceramic on the main 5V rail. Unused I/O pins should be configured as outputs-low or as inputs with weak internal pull-ups enabled to minimize ICC leakage. Brown-out reset and watchdog timer configuration should be set in the configuration word at programming time to avoid lockouts in field-deployed units.
Estimated: The 44-pin TQFP package has 0.8 mm pitch and requires careful PCB layout with 4 mil trace/space rules at a minimum. Place a ground pour under the IC body and connect OSC1/OSC2 traces with short, ground-shielded routing to the crystal or resonator. MCLR trace should not be routed near switching nodes to avoid false resets, and ICSP programming pads should remain accessible for factory programming.
Thông tin tuân thủ
Compliance data not explicitly provided in verified web sources for the PIC16C662T-10/PT. This part is an obsolete OTP EPROM MCU released in the 1990s, and Microchip's historical datasheets for the PIC16C66X family did not always include RoHS/REACH declarations. For new designs migrating to PIC16F662 or PIC16F882 equivalents, RoHS compliance is confirmed by Microchip product documentation.