PIC16LC662T-04/L - 8-Bit OTP MCU, 7KB ROM, 33 I/O | Microchip
MPN: PIC16LC662T-04/L ✓ فعالPIC16LC662T-04/L جائزہ
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU core, program memory (ROM/Flash/UVPROM), data memory (RAM), and a fixed set of peripherals such as timers, an A/D converter, and I/O ports. PIC microcontrollers are categorized within the broader hierarchy: MCU -> microcontroller -> embedded processor -> semiconductor. The "C" suffix in PIC16C662 denotes the original CMOS OTP/UVPROM family that preceded the modern Flash-based PIC16F series, and the "LC" prefix indicates the low-voltage / low-power variant optimized for operation down to 2.5V.
Key features include three timers (Timer0 8-bit with prescaler, Timer1 16-bit with prescaler and external crystal increment during sleep, Timer2 8-bit), a 10-bit multi-channel analog-to-digital converter, two capture/compare/PWM modules, a USART, and a watchdog timer. The 44-pin CERDIP with a quartz window allows the UVPROM to be erased and reprogrammed, which is typical for engineering development cycles rather than volume production.
Typical applications include industrial control boards, motor drive front-ends, instrumentation front-ends, and educational development platforms where erasable memory is required for firmware iteration. The wide 2.5-5.5V supply range also supports battery-powered embedded designs.
When designing with this part, note that the CERDIP package is non-RoHS by default and is intended for through-hole sockets; for new designs requiring RoHS compliance, migrate to a PIC16F66x or PIC16F88x equivalent in surface-mount packages. Always reserve the MCLR/Vpp pin with a proper reset network and use the in-circuit debug (ICD) header per Microchip app note TB008.
This page synthesizes distributor pricing, drop-in PIC16C66x family alternatives, and practical design notes not consolidated in the original manufacturer datasheet, giving engineers and buyers a faster path to qualification.
کے لیے ڈراپ اِن متبادل PIC16LC662T-04/L — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16LC662T-04/L (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Program Memory Size, RAM Size, Mounting Type, Operating Temperature Range, Package.
PIC16LC662-04/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC662T-04I/L
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LC662-04I/PT
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC66-04/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC66-04I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC662T-04/L زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core | PIC 8-bit RISC |
| Program Memory | 7 KB (4K x 14) UVPROM |
| RAM | 176 B |
| Operating Frequency | 20 MHz (max, 5V); 4 MHz speed grade designation |
| سپلائی وولٹیج | 2.5 V to 5.5 V |
| I/O Pins | 33 |
| Timers | 3 (Timer0 8-bit, Timer1 16-bit, Timer2 8-bit) |
| Capture/Compare/PWM | 2 modules |
| Serial Interface | USART |
| Watchdog Timer | Yes |
| پیکیج | CERDIP-40 (windowed), 0.600 INCH |
| آپریٹنگ درجہ حرارت | Commercial grade |
| Lead-Free / RoHS | non-compliant (contains lead via CERDIP package) |
PIC16LC662T-04/L پن کنفیگریشن
| پن 1 | MCLR/Vpp — Master Clear (reset) input / programming voltage |
| پن 2 | OSC1/CLKIN — Oscillator input / external clock input |
| پن 3 | OSC2/CLKOUT — Oscillator output / clock output |
| پن 4 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| پن 5 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| پن 6 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| پن 7 | RA3/AN3/Vref+ — PORTA bit 3 / Analog input 3 / ADC Vref+ |
| پن 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پن 9 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI Slave Select |
| پن 10 | VSS — Ground reference |
| پن 11 | VDD — Positive supply voltage (2.5-5.5V) |
| پن 12 | RB0/INT — PORTB bit 0 / External interrupt |
| پن 13 | RB1 — PORTB bit 1 |
| پن 14 | RB2 — PORTB bit 2 |
| پن 15 | RB3/PGM — PORTB bit 3 / LVP programming |
| پن 16 | RB4 — PORTB bit 4 |
| پن 17 | RB5 — PORTB bit 5 |
| پن 18 | RB6/PGC — PORTB bit 6 / ICD clock |
| پن 19 | RB7/PGD — PORTB bit 7 / ICD data |
| پن 20 | VSS — Ground (second) |
| پن 21 | VDD — Positive supply (second) |
| پن 22 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| پن 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| پن 24 | RC2/CCP1 — PORTC bit 2 / Capture Compare PWM 1 |
| پن 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پن 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پن 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| پن 28 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| پن 29 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| پن 30 | VSS — Ground (third) |
| پن 31 | VDD — Positive supply (third) |
| پن 32 | RD0 — PORTD bit 0 |
| پن 33 | RD1 — PORTD bit 1 |
| پن 34 | RD2 — PORTD bit 2 |
| پن 35 | RD3 — PORTD bit 3 |
| پن 36 | RD4 — PORTD bit 4 |
| پن 37 | RD5 — PORTD bit 5 |
| پن 38 | RD6 — PORTD bit 6 |
| پن 39 | RD7 — PORTD bit 7 |
| پن 40 | VSS — Ground (fourth) |
| پن 41 | VDD — Positive supply (fourth) |
| پن 42 | RE0/RD/AN5 — PORTE bit 0 / Parallel slave port read / Analog 5 |
| پن 43 | RE1/WR/AN6 — PORTE bit 1 / Parallel slave port write / Analog 6 |
| پن 44 | RE2/CS/AN7 — PORTE bit 2 / Parallel slave port chip select / Analog 7 |
عام استعمالات
PIC16LC662T-04/L کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Control & Motor Drive, Educational & Development Platforms, Battery-Powered Embedded Sensor Nodes, HVAC & Building Automation, Automotive Body Electronics (Legacy), Instrumentation & Test Equipment Front-Ends.
Industrial Control & Motor Drive
The PIC16LC662T-04/L fits industrial control boards where its 7 KB UVPROM, 33 I/O, 3 timers, and 10-bit ADC provide sufficient capability for PID loops, relay control, and BLDC commutation. Its 2.5-5.5V operating range supports 5V industrial backplanes and 3.3V battery-backed I/O. The Capture/Compare/PWM modules directly drive power-stage FETs at typical 4 MHz CPU clock. The wide operating temperature and rugged CERDIP package suit factory-floor environments, and the UV-erasable window simplifies firmware iteration during machine commissioning. Pair with a dsPIC30F2010 motor controller for higher-performance FOC applications.
تجویز کردہ
Educational & Development Platforms
The PIC16LC662T-04/L is a popular teaching part because the windowed CERDIP allows students to erase and re-flash UVPROM in classroom labs using a standard UV eraser and Microchip's PICSTART-Plus programmer. With 7 KB ROM and 176 B RAM, students can practice assembly-language programming of timers, ADC, USART, and interrupts on real silicon. The 33 I/O lines are sufficient to drive seven-segment displays, keypads, and small motor shields. The 2.5-5.5V supply range is forgiving of student power-supply mistakes, and the 4 MHz speed grade (derating to 20 MHz at 5V) is fast enough for real-time curricula without obsolescence risk.
تجویز کردہ
Battery-Powered Embedded Sensor Nodes
The PIC16LC662T-04/L suits battery-powered wireless sensor nodes because the "LC" low-voltage family operates down to 2.5V from two alkaline cells or a single Li-ion cell. Sleep current is in the microamp range with Timer1 running from an external 32.768 kHz crystal, enabling years of battery life when waking every few seconds. The 33 I/O lines handle SPI sensors, GPIOs, and analog inputs from thermistors or RTDs, while the integrated 10-bit ADC digitizes the readings. The 4 MHz speed grade runs sensor read-and-transmit cycles well under 10 ms, leaving the rest of the duty cycle for deep sleep.
تجویز کردہ
HVAC & Building Automation
The PIC16LC662T-4/L serves HVAC controllers, thermostat front-ends, and building-automation nodes because it integrates a 10-bit ADC for temperature/humidity sensors, PWM outputs for damper/servo control, and a USART for BACnet or Modbus links. The 2.5-5.5V supply runs directly from a 24 VAC transformer rectified to 5V DC or from a 3.3V backup battery. Industrial temp grade (-40C to +85C, on I-suffixed parts) handles rooftop and basement equipment. The 33 I/O drive relays, triacs, and LED indicators typical of HVAC panels. Pair with a CAT5/Modbus transceiver for wired building networks.
تجویز کردہ
Automotive Body Electronics (Legacy)
Although not AEC-Q100 qualified, the PIC16LC662T-04/L has historically been used in non-safety automotive body electronics such as interior lighting controllers, simple door modules, and aftermarket accessories. The 33 I/O drive LED arrays, relays, and stepper motors for HVAC vents. The 2.5-5.5V supply accepts 12V battery with a simple 5V regulator. The wide operating temperature and rugged CERDIP package tolerate engine-bay heat. New automotive designs should migrate to PIC16F88x or dsPIC33 variants that carry AEC-Q100 qualification.
تجویز کردہ
Instrumentation & Test Equipment Front-Ends
The PIC16LC662T-04/L functions as a low-cost front-end controller in bench instruments such as digital panel meters, signal generators, and laboratory data loggers. The 10-bit ADC digitizes analog sensor outputs while the USART streams readings to a PC over RS-232. The 33 I/O lines drive LCD character displays, rotary encoders, and keypads. The 4 MHz CPU clock is sufficient for sample rates below 100 kHz, and the 7 KB ROM stores calibration tables and menu state machines. The UV-erasable window allows lab firmware tuning without reordering OTP parts.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16LC662T-04/L — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16LC662-04/L | PIC16LC662T-04I/L | PIC16LC662-04I/PT | PIC16LC66-04/SO | PIC16LC66-04I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | CERDIP-40 (windowed) | CERDIP-40 (windowed) - same | CERDIP-40 (windowed) - same | TQFP-44 (PT) - SMT migration | SOIC-28 (SO) - reduced pin | SOIC-28 (SO) - reduced pin |
| Program Memory | 7 KB UVPROM | 7 KB UVPROM | 7 KB UVPROM | 7 KB UVPROM | 7 KB UVPROM | 7 KB UVPROM |
| I/O Pins | 33 | 33 | 33 | 33 | 22 | 22 |
| Supply Voltage | 2.5 to 5.5 V | 2.5 to 5.5 V | 2.5 to 5.5 V | 2.5 to 5.5 V | 2.5 to 5.5 V | 2.5 to 5.5 V |
| Temperature Grade | Commercial | Commercial | Industrial (-40C to +85C) | Industrial | Commercial | Industrial |
| Memory Type | UVPROM (windowed) | UVPROM | UVPROM | UVPROM | UVPROM | UVPROM |
| Pin Count | 40 (CERDIP, 44 lead count) | 40 | 40 | 44 (TQFP) | 28 | 28 |
اہم امتیازی خصوصیات
- Windowed CERDIP package supports UV erasure for development cycles (بمقابلہPIC16F877A-I/P)
- 33 I/O pins in 44-terminal package supports larger peripheral count (بمقابلہPIC16LC66-04/SO)
- Low-voltage LC variant operates down to 2.5V for battery designs (بمقابلہPIC16C662-04/P (non-LC))
ڈیزائن نوٹس
Estimated: at VDD = 5V and 4 MHz CPU clock, the PIC16LC662T-04/L draws approximately 5-10 mA active current per DS30211D typical specification. Decouple VDD with a 100 nF ceramic capacitor close to each VDD pin (pins 11, 21, 31, 41), plus a bulk 10 uF tantalum at the board entry. Tie all four VSS pins (10, 20, 30, 40) to a single ground plane to avoid ground-bounce-induced ADC noise.
Per Microchip app note TB008, always place a 100 kohm pull-up on MCLR/Vpp (pin 1) and a series Schottky diode from VDD to MCLR to prevent programming voltage leakage. Configuring RB3/PGM (pin 15) for low-voltage programming (LVP) by default prevents accidental entry into high-voltage programming mode - disable LVP (CONFIG bit) for production to free RB3 as GPIO. Configure unused I/O as outputs to minimize current draw.
Route the 4 MHz crystal traces (OSC1/OSC2) short and symmetric, surrounded by a ground guard ring, and place load capacitors (typically 15-33 pF) within 3 mm of the pins per Microchip app note AN588. For PIC16LC662 ADC accuracy better than 5 LSB, source-impedance should stay below 10 kohm and an external op-amp buffer is recommended. Avoid routing digital switching signals near the analog PORTE inputs (RE0-RE2 / AN5-AN7).
تعمیل کی معلومات
CERDIP package contains lead; not RoHS compliant. REACH compliance per Microchip product declaration. Not AEC-Q100 qualified; do not use in automotive safety applications.
