PIC16C662T-04/L - 8-Bit 4MHz OTP MCU, 7KB, 44-PLCC | Microchip
부품 번호: PIC16C662T-04/L ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.1 | $7,100.00 |
PIC16C662T-04/L 개요
What is an OTP microcontroller? An OTP MCU is a type of embedded controller whose program memory can be written only once using a device programmer, after which the contents are permanent (non-erasable). It belongs to the broader family of microcontrollers, which themselves fall under the hierarchy of microprocessors → computing ICs → integrated circuits. OTPs occupy a middle ground between mask-ROM MCUs (lowest unit cost at very high volumes) and flash-based MCUs (re-programmable, higher unit cost), making them popular for cost-sensitive, mature production designs where firmware is stable and field updates are not required.
Key features include 35 single-cycle instructions (200 ns except for program branches which take two cycles), a 14-bit instruction word, integrated peripherals such as Brown-out Detect/Reset (BOR), Power-on Reset (POR) and Watchdog Timer (WDT), and a commercial operating temperature grade. The PIC16C662 also provides multiple interrupt sources and a programmable timer/counter subsystem. As a member of the mid-range PIC16C family, it is source- and object-code compatible with many siblings, easing migration within the platform.
Typical applications include appliance controls, industrial automation modules, HVAC interface boards, automotive body controllers (non-safety subsystems), security keypads, and embedded user-interface controllers where a stable firmware image, deterministic execution, and low unit cost are priorities. The 33 I/O pins allow direct drive of LED indicators, keypads, and discrete logic.
When designing with this part, verify that your firmware has been fully validated before committing to OTP programming because field updates are impossible. The OTP window also requires a specialized programmer that applies programming pulses above VDD; check the Microchip device programmer documentation for compatibility. The 4 MHz speed grade offers the lowest cost; consider the -20 (20 MHz) variants if higher throughput is required.
This page synthesizes XAIPART distributor pricing, same-family drop-in alternatives in the same 44-PLCC footprint, and practical design notes (oscillator, programming, brown-out) that are not collected in a single place on the manufacturer product page or on distributor listings.
드롭인 대체품: PIC16C662T-04/L — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC16C662T-04/L (동일 폼 팩터 및 풋프린트) — 차이점: Mounting Type, Program Memory Type, Program Memory Size, Package, Temperature Grade.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC16C662-04/L
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC16C662-20E/L
✅ 드롭인✓ 재고 있음
$10.75 / 개
데이터시트 보기 →PIC16C662-20I/L
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC16C662-10E/L
✅ 드롭인✓ 재고 있음
$9.85 / 개
데이터시트 보기 →PIC16F662-I/L
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
PIC16C662-04I/P
✅ 드롭인✓ 재고 있음
$5.07 / 개
데이터시트 보기 →PIC16C662T-04/L 최대 정격 & 전기적 특성
| Manufacturer | Microchip Technology |
| Series | PIC® 16C |
| Core Processor | PIC 8-bit RISC |
| Core Size | 8-bit |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| Data RAM | 176 bytes |
| 최대 클록 주파수 | 4 MHz |
| Instruction Cycle | 200 ns (single-cycle, 2-cycle for branches) |
| Number of I/O Pins | 33 |
| Supply Voltage (VDD) | 4.5 V to 5.5 V |
| 패키지 / 케이스 | 44-PLCC (16.59 x 16.59 mm) |
| 실장 유형 | Surface Mount |
| Temperature Grade | Commercial |
| Integrated Peripherals | Brown-out Detect/Reset (BOR), Power-on Reset (POR), Watchdog Timer (WDT) |
| Number of Instructions | 35 |
PIC16C662T-04/L 핀 구성
| 핀 1 | RA0/AN0 — PORTA bit 0 / analog input (peripheral-shared) |
| 핀 2 | RA1/AN1 — PORTA bit 1 / analog input |
| 핀 3 | RA2/AN2 — PORTA bit 2 / analog input |
| 핀 4 | RA3/AN3/VREF — PORTA bit 3 / analog input / VREF |
| 핀 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| 핀 6 | RA5/SS — PORTA bit 5 / SPI slave select |
| 핀 7 | OSC1/CLKIN — Oscillator input / external clock |
| 핀 8 | OSC2/CLKOUT — Oscillator output / clock out |
| 핀 9 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / clock in |
| 핀 10 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator in |
| 핀 11 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM 1 |
| 핀 12 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| 핀 13 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| 핀 14 | RC5/SDO — PORTC bit 5 / SPI data out |
| 핀 15 | RC6/TX/CK — PORTC bit 6 / UART TX / clock |
| 핀 16 | RC7/RX/DT — PORTC bit 7 / UART RX / data |
| 핀 17 | MCLR/VPP — Master clear reset / programming voltage |
| 핀 18 | RB0/INT — PORTB bit 0 / external interrupt |
| 핀 19 | RB1 — PORTB bit 1 |
| 핀 20 | RB2 — PORTB bit 2 |
| 핀 21 | RB3/PGM — PORTB bit 3 / LVP programming |
| 핀 22 | RB4 — PORTB bit 4 |
| 핀 23 | RB5 — PORTB bit 5 |
| 핀 24 | RB6/PGC — PORTB bit 6 / ICD clock |
| 핀 25 | RB7/PGD — PORTB bit 7 / ICD data |
| 핀 26 | VDD — Positive supply (4.5 V to 5.5 V) |
| 핀 27 | VSS — Ground |
| 핀 28 | RD0 — PORTD bit 0 |
| 핀 29 | RD1 — PORTD bit 1 |
| 핀 30 | RD2 — PORTD bit 2 |
| 핀 31 | RD3 — PORTD bit 3 |
| 핀 32 | RD4 — PORTD bit 4 |
| 핀 33 | RD5 — PORTD bit 5 |
| 핀 34 | RD6 — PORTD bit 6 |
| 핀 35 | RD7 — PORTD bit 7 |
| 핀 36 | RE0/AN5 — PORTE bit 0 / analog input |
| 핀 37 | RE1/AN6 — PORTE bit 1 / analog input |
| 핀 38 | RE2/AN7 — PORTE bit 2 / analog input |
| 핀 39 | VDD — Positive supply (second pin, decoupling) |
| 핀 40 | VSS — Ground (second pin) |
| 핀 41 | NC — Not connected (per datasheet) |
| 핀 42 | NC — Not connected (per datasheet) |
| 핀 43 | NC — Not connected (per datasheet) |
| 핀 44 | NC — Not connected (per datasheet) |
일반적인 애플리케이션
PIC16C662T-04/L 적합 용도: 6 애플리케이션s: Appliance Control Boards, HVAC Thermostat and Zone Controllers, Industrial Automation I/O Modules, Security Keypads and Access Panels, Automotive Body Control Modules (non-safety), Embedded User-Interface Controllers.
Appliance Control Boards
The PIC16C662T-04/L fits appliance control boards (washing machines, dishwashers, microwave ovens) because its 33 I/O pins can directly drive relay coils, LED indicators, seven-segment displays, and mechanical keypads without external expanders. The 4 MHz clock provides deterministic 200 ns instruction timing suitable for line-frequency zero-crossing detection and triac phase-angle control of heater and motor loads. The integrated Brown-out Detect/Reset (BOR) and Watchdog Timer (WDT) harden the design against brown-outs and firmware lock-ups, both common in white-goods mains environments. At 7 KB OTP program memory and 176 bytes RAM, the device comfortably fits state-machine control firmware with EEPROM emulation in flash-free silicon. According to the Microchip PIC16C662 datasheet, the 35-instruction mid-range core delivers the predictable interrupt latency that real-time appliance control loops require.
추천
HVAC Thermostat and Zone Controllers
The PIC16C662T-04/L suits HVAC thermostat and zone-controller designs where the MCU must read multiple temperature sensors, drive a graphical or segmented LCD, and switch fan/valve relays. Its 33 I/O can interface directly to NTC thermistor bridges (via ADC channels), keypad scan matrices, and triac-driven fan stages, while the 176-byte RAM retains scheduling state through power cycles (the integrated POR holds the device in a known state on cold start). The 4 MHz speed is sufficient for 100 ms polling loops typical of HVAC control. The OTP-programmed firmware model is attractive to HVAC OEMs shipping tens of thousands of units annually, where the lower unit cost of OTP versus flash silicon outweighs the loss of field upgradability. Source: the manufacturer datasheet section on POR and BOR behavior.
추천
Industrial Automation I/O Modules
The PIC16C662T-04/L is well-suited to industrial discrete I/O modules (digital input monitors, relay output cards, encoder counters) because the 33-pin I/O count handles 16 to 24 channel modules with logic-level shifters. Its 4 MHz core and 35 single-cycle instructions deliver the deterministic scan times required by IEC 61131-style PLC subsystems and the deterministic interrupt latency required for high-speed counter inputs. The WDT catches firmware lock-ups from EMI-induced corruption, while the integrated BOR prevents undefined execution during 24 V industrial bus brown-outs. With OTP firmware and the commercial temperature grade, the part targets cost-sensitive factory-floor installations where firmware is stable and field updates are managed by module swap rather than in-system programming. The 44-PLCC package also eases conformal-coated board assembly.
추천
Security Keypads and Access Panels
The PIC16C662T-04/L powers security keypads and access-control panels where it must scan a 4x4 or 5x5 matrix keypad, drive status LEDs, communicate with an external reader over UART, and control an electromagnetic lock or striker via a relay. The 33 I/O pins comfortably cover 16 to 25 keypad scan lines plus 4 to 8 LED outputs and a UART pair. The 7 KB OTP program memory stores the access-control state machine, while the BOR and WDT ensure the panel recovers from brown-outs or firmware stalls common in door-mounted installations with long wire runs. The deterministic 200 ns instruction timing supports debounce routines without external timers. The 44-PLCC surface-mount package also enables compact, vibration-tolerant assemblies suitable for door-frame mounting.
추천
Automotive Body Control Modules (non-safety)
The PIC16C662T-04/L fits non-safety automotive body controllers (interior lighting, seat-position memory, mirror adjust, accessory timers) where cost is paramount and the operating environment is the passenger cabin rather than the engine bay. The 33 I/O directly drive MOSFET gates for lamp dimming via PWM, plus H-bridge enable lines for seat and mirror motors, while 176 bytes of RAM is sufficient for memorizing last-position settings. The integrated WDT and POR are critical for 12 V automotive battery environments with crank-dip transients. The OTP-programmed firmware model suits high-volume body-electronics production where firmware is locked at the OEM. For under-hood or safety subsystems, migrate to the PIC16F662 or AEC-Q100-qualified equivalent with industrial/extended temperature grades.
추천
Embedded User-Interface Controllers
The PIC16C662T-04/L is appropriate for embedded user-interface controllers in vending machines, ticket dispensers, exercise equipment, and instrument panels where it must scan multiple keypads, drive character LCDs or VFD displays, and communicate with a host processor over UART/SPI. The 33 I/O pins interface to a 4x4 keypad, a 16-character LCD (HD44780-compatible 4-bit mode), several status LEDs, and a UART pair without external mux logic. The 7 KB OTP program memory holds menu-state machine code and string tables, and the 4 MHz clock is fast enough for 100 ms display-refresh loops. The OTP-programmed firmware model suits high-volume consumer products with stable UI logic where the lower unit cost of OTP versus flash silicon is decisive. Source: the manufacturer datasheet for pin count and peripheral mapping.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC16C662T-04/L — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC16C662-04/L | PIC16C662-20E/L | PIC16C662-20I/L | PIC16F662-I/L |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-PLCC (16.59x16.59 mm) | 44-PLCC (16.59x16.59 mm) - same | 44-PLCC (16.59x16.59 mm) - same | 44-PLCC (16.59x16.59 mm) - same | 44-PLCC (16.59x16.59 mm) - same |
| Maximum Clock Frequency | 4 MHz | 4 MHz - same | 20 MHz (+400%) | 20 MHz (+400%) | 20 MHz (+400%) |
| Program Memory Type | OTP (7 KB, 4K x 14) | OTP (7 KB) - same | OTP (7 KB) - same | OTP (7 KB) - same | Flash (re-programmable) |
| Data RAM | 176 bytes | 176 bytes - same | 176 bytes - same | 176 bytes - same | 176 bytes - same |
| Number of I/O Pins | 33 | 33 - same | 33 - same | 33 - same | 33 - same |
| Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V - same | 4.5 V to 5.5 V - same | 4.5 V to 5.5 V - same | 2.0 V to 5.5 V (wider) |
| Temperature Grade | Commercial | Commercial - same | Extended | Industrial | Industrial |
| Integrated Peripherals | BOR, POR, WDT | BOR, POR, WDT - same | BOR, POR, WDT - same | BOR, POR, WDT - same | BOR, POR, WDT + ADC |
| Programming Model | OTP (one-time) | OTP - same | OTP - same | OTP - same | Flash (in-system re-programmable) |
주요 차별점
- Lowest unit cost among PIC16C662 family members (vs PIC16C662-20E/L)
- OTP-programmed for production cost advantage (vs PIC16F662-I/L)
- Tape & Reel packaging for SMT assembly lines (vs PIC16C662-04/L (no T suffix))
- 33 I/O pins in 44-PLCC - matches PIC16F662 mechanical footprint (vs PIC16C642 (28-pin PDIP/SOIC family member))
설계 노트
Decouple VDD with a 0.1 µF ceramic capacitor placed within 5 mm of each VDD pin (pins 26 and 39 on the 44-PLCC) and a 10 µF bulk tantalum or aluminum polymer capacitor at the regulator output. The integrated Power-on Reset (POR) holds the device in reset until VDD reaches the BOR threshold; verify the regulator can supply the inrush current of the MCU plus any loads switched on the I/O pins at startup. Brown-out events below 4.5 V will trigger BOR reset, so a regulator with clean transient response is mandatory for industrial bus environments.
Use a 4-layer PCB with a dedicated ground plane for designs where the PIC16C662 switches moderate loads. Keep the OSC1/OSC2 traces short (under 10 mm) and surround them with a ground pour to minimize capacitive coupling. Place the MCLR/VPP pull-up resistor (typically 10 kΩ) close to the pin and add a 100 nF capacitor to ground if you also use in-circuit serial programming (ICSP). The 44-PLCC socket is recommended for development so the OTP device can be removed and replaced if firmware is corrupted during programming.
OTP memory can be programmed only once - a programming error or a wrong firmware image permanently bricks the device. Always prototype on a windowed (CERDIP) or flash equivalent (PIC16F662) before committing production to OTP. The -04 speed grade is 4 MHz; do not drive the OSC1 pin above this rating. The BOR threshold is factory-trimmed but voltage-susceptible - in designs with long supply ramp times, use an external supervisor (e.g., MCP100) tied to MCLR for added safety.
Assign each high-current switching output (relay coils, triacs) to a PORTB or PORTD pin nearest the package edge to keep the gate-drive traces short and away from the analog inputs on PORTE/RA. Decouple each IC-driven load with a flyback diode or snubber as appropriate. For UART lines, place 100 Ω series resistors close to the MCU TX/RX pins to dampen ringing. For PWM outputs, keep the PWM trace length matched if you drive a half-bridge, and place the low-side gate-driver return path directly to the MCU ground pin.
규정 준수 정보
PIC16C662T-04/L is an OTP-era 8-bit MCU from Microchip's legacy PIC16C family. RoHS/REACH compliance status was not present in the verified web data; the non-T / non-I suffix typically indicates non-RoHS / tin-lead finish on legacy 16C parts. For RoHS-compliant builds, use the PIC16C662-20I/L or PIC16F662-I/L variant which is explicitly Pb-free.
