PIC16C662T-20E/PQ - 8-Bit OTP MCU, 7KB, 20MHz, 44-MQFP | Microchip
Référence : PIC16C662T-20E/PQ ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.42 | $9,42 |
| 10 | $8.95 | $89,50 |
| 100 | $8.12 | $812,00 |
| 500 | $7.4 | $3 700,00 |
| 1 000 | $6.85 | $6 850,00 |
PIC16C662T-20E/PQ Présentation
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.
Alternatives de remplacement direct pour PIC16C662T-20E/PQ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16C662T-20E/PQ (même facteur de forme et même empreinte) — différant par Data EEPROM, Package, Program Memory Type, Program Memory Size, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16F662-I/PQ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16F662T-I/PQ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16CR662-I/PQ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16C662-20E/PQ
✅ Remplacement direct✓ En stock
$10.95 / unité
Voir la fiche technique →PIC16C661T-20E/PQ
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC16C662-20/PQ
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$9.75 / unité
Voir la fiche technique →PIC16C662T-20E/PQ Valeurs maximales et caractéristiques électriques
| 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) |
| Fréquence d'horloge maximale | 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) |
| Température de fonctionnement | -40 C to +125 C (E - extended) |
| Boîtier | 44-MQFP (10x10 mm) |
| Type de montage | Surface Mount |
| Statut RoHS | Non-compliant (Pb-bearing MQFP) |
| Lead Finish | SnPb (tin-lead) |
Configuration des broches de PIC16C662T-20E/PQ
| Broche 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Broche 2 | RA0/AN0 — PORTA bit 0 / analog channel 0 |
| Broche 3 | RA1/AN1 — PORTA bit 1 / analog channel 1 |
| Broche 4 | RA2/AN2 — PORTA bit 2 / analog channel 2 |
| Broche 5 | RA3/AN3/VREF — PORTA bit 3 / analog channel 3 / external ADC reference |
| Broche 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Broche 7 | RA5/SS/AN4 — PORTA bit 5 / SSP slave select / analog channel 4 |
| Broche 8 | RE0/RD/AN5 — PORTE bit 0 / parallel-port read / analog channel 5 |
| Broche 9 | RE1/WR/AN6 — PORTE bit 1 / parallel-port write / analog channel 6 |
| Broche 10 | RE2/CS/AN7 — PORTE bit 2 / parallel-port chip select / analog channel 7 |
| Broche 11 | VDD — Positive supply voltage (3.0V to 5.5V) |
| Broche 12 | VSS — Ground reference |
| Broche 13 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Broche 14 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Broche 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Broche 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 PWM output |
| Broche 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| Broche 18 | RC3/SCK/SCL — PORTC bit 3 / SSP SPI clock / I2C clock |
| Broche 19 | RC4/SDI/SDA — PORTC bit 4 / SSP SPI data in / I2C data |
| Broche 20 | RC5/SDO — PORTC bit 5 / SSP SPI data out |
| Broche 21 | RC6/TX/CK — PORTC bit 6 / USART asynchronous transmit / clock |
| Broche 22 | RC7/RX/DT — PORTC bit 7 / USART asynchronous receive / data |
| Broche 23 | RB0/INT — PORTB bit 0 / external interrupt input |
| Broche 24 | RB1 — PORTB bit 1 |
| Broche 25 | RB2 — PORTB bit 2 |
| Broche 26 | RB3/PGM — PORTB bit 3 / low-voltage programming enable |
| Broche 27 | RB4 — PORTB bit 4 |
| Broche 28 | RB5 — PORTB bit 5 |
| Broche 29 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Broche 30 | RB7/PGD — PORTB bit 7 / ICSP data |
| Broche 31 | VSS — Ground reference |
| Broche 32 | VDD — Positive supply voltage (3.0V to 5.5V) |
| Broche 33 | RB0 — PORTB bit 0 alternate (ICSP clock on some variants) |
| Broche 34 | NC — Not connected (per datasheet) |
| Broche 35 | NC — Not connected (per datasheet) |
| Broche 36 | NC — Not connected (per datasheet) |
| Broche 37 | NC — Not connected (per datasheet) |
| Broche 38 | NC — Not connected (per datasheet) |
| Broche 39 | NC — Not connected (per datasheet) |
| Broche 40 | NC — Not connected (per datasheet) |
| Broche 41 | NC — Not connected (per datasheet) |
| Broche 42 | NC — Not connected (per datasheet) |
| Broche 43 | NC — Not connected (per datasheet) |
| Broche 44 | NC — Not connected (per datasheet) |
Applications typiques
PIC16C662T-20E/PQ convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C662T-20E/PQ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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) |
Principaux différenciateurs
- Highest-density OTP in the PIC16C66x family (vs PIC16C661T-20E/PQ)
- Extended temperature grade for automotive/industrial (vs PIC16C662-20/PQ)
- Tape-and-reel packaging for high-volume SMD assembly (vs PIC16C662-20E/PQ)
Notes de conception
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.
Informations de conformité
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.
