PIC16C662T-20E/PQ - 8-Bit OTP MCU, 7KB, 20MHz, 44-MQFP | Microchip
MPN: PIC16C662T-20E/PQ ✗ Akhir HidupPIC16C662T-20E/PQ Ringkasan
A microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable I/O peripherals. The PIC16C662 belongs to Microchip's mid-range PIC architecture family, which occupies the taxonomy MCU -> microcontroller -> embedded controller -> semiconductor IC. OTP memory allows one-time factory or in-circuit programming and is widely used for low-cost, low-volume production runs where firmware is finalized at assembly time.
Key features include an enhanced 14-bit instruction set, 192 bytes of data RAM, up to 33 digital I/O pins, three timer/counters, a synchronous serial port (SSP) supporting SPI and I2C, a USART for asynchronous serial communications, an 8-bit ADC with up to 8 channels, programmable brown-out reset (BOR), and a watchdog timer for reliable unattended operation. The 20 MHz clock delivers 5 MIPS instruction throughput, with each instruction cycle taking 4 oscillator periods.
Typical applications include industrial control panels, appliance controllers, automotive body electronics (pre-CAN generations), HVAC thermostats, security keypads, sensor signal conditioning, simple human-machine interface (HMI) boards, and remote sensor nodes. The extended temperature range allows operation in harsh industrial and automotive under-hood environments where commercial-grade parts would otherwise fail.
When designing with the PIC16C662, ensure decoupling capacitors are placed within 5 mm of VDD/VSs pins, the MCLR reset line is properly pulled up, and unused I/O pins are configured as outputs to minimize quiescent current. Use the ICD header footprint for in-circuit debugging during development; for production, mask-programmed PIC16CR662 variants are available for high volume.
This page synthesizes distributor pricing, package-level alternatives, and application context not found in the manufacturer datasheet alone, helping engineers verify second-source options and compliance before committing a design to the 44-MQFP footprint.
Alternatif penggantian untuk PIC16C662T-20E/PQ — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian PIC16C662T-20E/PQ (sama faktor bentuk dan footprint) — berbeda di dalam Data EEPROM, Package, Program Memory Type, Program Memory Size, Core Architecture.
PIC16F662-I/PQ
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
PIC16F662T-I/PQ
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
PIC16CR662-I/PQ
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
PIC16C662-20E/PQ
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC16C661T-20E/PQ
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
PIC16C662-20/PQ
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →PIC16C662T-20E/PQ Rating Maksimal & Karakteristik Listrik
| Core Architecture | PIC16C (8-bit) mid-range |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| Data RAM | 192 bytes |
| Data EEPROM | Not present (OTP only) |
| Frekuensi Bawah Maximum | 20 MHz |
| Instruction Throughput | 5 MIPS |
| Instruction Set Width | 14-bit |
| Supply Voltage Range | 3.0 V to 5.5 V |
| I/O Pins | 33 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| ADC | 8-bit, up to 8 channels |
| Serial Interfaces | USART + SSP (SPI / I2C) |
| Suhu Kerja | -40 C to +125 C (E - extended) |
| Paket | 44-MQFP (10x10 mm) |
| Tipe Mounting | Surface Mount |
| Status RoHS | Non-compliant (Pb-bearing MQFP) |
| Lead Finish | SnPb (tin-lead) |
Konfigurasi Pin PIC16C662T-20E/PQ
| Pin produk 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pin produk 2 | RA0/AN0 — PORTA bit 0 / analog channel 0 |
| Pin produk 3 | RA1/AN1 — PORTA bit 1 / analog channel 1 |
| Pin produk 4 | RA2/AN2 — PORTA bit 2 / analog channel 2 |
| Pin produk 5 | RA3/AN3/VREF — PORTA bit 3 / analog channel 3 / external ADC reference |
| Pin produk 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin produk 7 | RA5/SS/AN4 — PORTA bit 5 / SSP slave select / analog channel 4 |
| Pin produk 8 | RE0/RD/AN5 — PORTE bit 0 / parallel-port read / analog channel 5 |
| Pin produk 9 | RE1/WR/AN6 — PORTE bit 1 / parallel-port write / analog channel 6 |
| Pin produk 10 | RE2/CS/AN7 — PORTE bit 2 / parallel-port chip select / analog channel 7 |
| Pin produk 11 | VDD — Positive supply voltage (3.0V to 5.5V) |
| Pin produk 12 | VSS — Ground reference |
| Pin produk 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Pin produk 14 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Pin produk 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Pin produk 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 PWM output |
| Pin produk 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Pin produk 18 | RC3/SCK/SCL — PORTC bit 3 / SSP SPI clock / I2C clock |
| Pin produk 19 | RC4/SDI/SDA — PORTC bit 4 / SSP SPI data in / I2C data |
| Pin produk 20 | RC5/SDO — PORTC bit 5 / SSP SPI data out |
| Pin produk 21 | RC6/TX/CK — PORTC bit 6 / USART asynchronous transmit / clock |
| Pin produk 22 | RC7/RX/DT — PORTC bit 7 / USART asynchronous receive / data |
| Pin produk 23 | RB0/INT — PORTB bit 0 / external interrupt input |
| Pin produk 24 | RB1 — PORTB bit 1 |
| Pin produk 25 | RB2 — PORTB bit 2 |
| Pin produk 26 | RB3/PGM — PORTB bit 3 / low-voltage programming enable |
| Pin produk 27 | RB4 — PORTB bit 4 |
| Pin produk 28 | RB5 — PORTB bit 5 |
| Pin produk 29 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin produk 30 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin produk 31 | VSS — Ground reference |
| Pin produk 32 | VDD — Positive supply voltage (3.0V to 5.5V) |
| Pin produk 33 | RB0 — PORTB bit 0 alternate (ICSP clock on some variants) |
| Pin produk 34 | NC — Not connected (per datasheet) |
| Pin produk 35 | NC — Not connected (per datasheet) |
| Pin produk 36 | NC — Not connected (per datasheet) |
| Pin produk 37 | NC — Not connected (per datasheet) |
| Pin produk 38 | NC — Not connected (per datasheet) |
| Pin produk 39 | NC — Not connected (per datasheet) |
| Pin produk 40 | NC — Not connected (per datasheet) |
| Pin produk 41 | NC — Not connected (per datasheet) |
| Pin produk 42 | NC — Not connected (per datasheet) |
| Pin produk 43 | NC — Not connected (per datasheet) |
| Pin produk 44 | NC — Not connected (per datasheet) |
Aplikasi Umum
PIC16C662T-20E/PQ cocok untuk 6 aplikasis: Industrial Control Panel, Appliance Motor Controller, HVAC Thermostat, Security Keypad / Access Controller, Automotive Body Electronics (Pre-CAN), Remote Sensor Node / Telemetry.
Industrial Control Panel
The PIC16C662T-20E/PQ is well-suited for industrial control panel applications where 33 I/O pins, 7 KB of OTP program memory, and an extended -40 C to +125 C temperature range are required. Its 5 MIPS throughput comfortably handles real-time scan loops for digital I/O, contact debouncing, and PWM outputs driving relays or solenoids. The integrated USART and SSP peripherals allow communication with remote HMIs, while the 8-bit ADC reads up to 8 analog sensor inputs (temperature, pressure, flow) directly. Compared with discrete logic controllers, this single-chip solution reduces BOM count by 60-70% and enables a smaller panel footprint.
Direkomendasikan
Appliance Motor Controller
In washing machines, dishwashers, and refrigerator compressors, the PIC16C662T-20E/PQ drives brush DC and universal motors through its PWM-capable CCP module while monitoring current, RPM (via Timer1 capture), and temperature via the on-chip 8-bit ADC. The OTP memory locks the motor-control algorithm against tampering by service technicians, which is a commercial advantage in consumer appliances. 7 KB of code space accommodates field-oriented control or simple V/Hz scalar drives. Brown-out detection prevents erratic behavior during AC-line brownouts common in household mains.
Direkomendasikan
HVAC Thermostat
The PIC16C662T-20E/PQ forms the heart of programmable HVAC thermostats by reading NTC thermistors through its 8-channel ADC, driving a multiplexed LCD via software SPI, and switching the furnace relay through a TRIAC opto-isolated output. Extended temperature rating allows installation in attic or garage equipment rooms. The USART interfaces with Wi-Fi or Zigbee modules for smart-thermostat connectivity, and the watchdog timer ensures unattended recovery from mains glitches. OTP memory prevents end users from rewriting the calibration constants, preserving safety agency certifications.
Direkomendasikan
Security Keypad / Access Controller
Standalone access-control keypads benefit from the PIC16C662T-20E/PQ's 33 I/O pins (enough for a 4x4 matrix keypad, 8 status LEDs, a buzzer, a magnetic-door sensor, and a relay output), 5 MIPS throughput (for rapid keypad debounce and encryption), and 7 KB of OTP (for storing PIN hashes and event logs in external EEPROM). The extended temperature grade permits outdoor keypad installations in cold climates. Watchdog timer prevents lockout if the firmware hangs, and the BOR circuit ensures clean restart after power events.
Direkomendasikan
Automotive Body Electronics (Pre-CAN)
Pre-CAN body modules (window lifters, mirror controllers, seat adjusters, lighting timers) use the PIC16C662T-20E/PQ because its -40 C to +125 C range survives the automotive underhood thermal environment and its 7 KB OTP accommodates the timing logic and fault diagnostics. PWM outputs drive small DC motors, while the ADC reads current sense resistors for stall detection. The lack of CAN is acceptable in these single-function nodes; LIN or simple PWM signaling can be implemented through the USART.
Direkomendasikan
Remote Sensor Node / Telemetry
Battery-powered remote sensor nodes (irrigation controllers, weather stations, livestock monitors) leverage the PIC16C662T-20E/PQ's 192 bytes of RAM, low-power SLEEP mode (draws <1 uA), and USART to interface with low-power radio modules such as 433 MHz transceivers. The 8-bit ADC digitizes soil moisture, light, or other analog channels, and the watchdog wakes the part every few seconds to take readings. OTP memory is a security advantage: the firmware cannot be extracted or modified by competitors.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk PIC16C662T-20E/PQ — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | PIC16F662-I/PQ | PIC16F662T-I/PQ | PIC16CR662-I/PQ | PIC16C662-20E/PQ | PIC16C661T-20E/PQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-MQFP (PQ) | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same | 44-MQFP (PQ) - same |
| Program Memory Type | OTP (7 KB) | Flash (3.5 KB) | Flash (3.5 KB) | Mask ROM (7 KB) | OTP (7 KB) | OTP (1 KB) |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Data RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Operating Temperature | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +125 C (E) | -40 C to +125 C (E) |
| Reprogrammability | None (OTP) | Yes (flash, ~100k cycles) | Yes (flash, ~100k cycles) | None (mask ROM) | None (OTP) | None (OTP) |
| RoHS Compliance | Non-compliant (SnPb) | Compliant (matte-tin) | Compliant (matte-tin) | Compliant (matte-tin) | Non-compliant (SnPb) | Non-compliant (SnPb) |
Diferensiator Kunci
- Highest-density OTP in the PIC16C66x family (vsPIC16C661T-20E/PQ)
- Extended temperature grade for automotive/industrial (vsPIC16C662-20/PQ)
- Tape-and-reel packaging for high-volume SMD assembly (vsPIC16C662-20E/PQ)
Catatan Desain
Decoupling: place a 100 nF ceramic capacitor within 5 mm of each VDD/VSS pin pair, plus a single 10 uF tantalum or ceramic bulk capacitor near the part. For ADC accuracy, add a small ferrite bead between digital VDD and analog AVdd if the application reads sensors at >8-bit effective resolution. Estimated: at 20 MHz clock and 5 MIPS active current is approximately 10 mA, so a 100 mA LDO is sufficient headroom for the PIC16C662T-20E/PQ.
The 44-MQFP package has 0.8 mm lead pitch - use a 4-layer PCB with continuous ground plane under the part for thermal spreading and EMI control. Keep the 20 MHz crystal within 10 mm of OSC1/OSC2 with short, length-matched traces; add a 1 MOhm parallel resistor across the crystal if start-up reliability is marginal at cold temperatures below -20 C.
Configuration bits (FOSC, WDTE, PWRTE, BOREN) must be set during programming and cannot be changed at runtime. Watch out for the MCLR pin: leaving it floating causes intermittent resets - tie to VDD via a 10 kOhm pull-up and 100 nF cap for noise immunity. Brown-out reset (BOR) should be enabled for any mains-powered application to avoid EEPROM corruption during AC brownouts.
Informasi Konformitas
SnPb (tin-lead) lead finish on 44-MQFP package - exempt under RoHS Annex III 7(a) for lead in server/storage and certain industrial applications but not compliant for general consumer products. Use PIC16F662-I/PQ for RoHS-compliant drop-in.
