PIC16LC662T-04/PT - 8-bit PIC MCU, 7KB OTP, 4MHz | Microchip
Référence : PIC16LC662T-04/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.95 | $8,95 |
| 10 | $8.05 | $80,50 |
| 100 | $7.15 | $715,00 |
| 500 | $6.35 | $3 175,00 |
| 1 000 | $5.65 | $5 650,00 |
PIC16LC662T-04/PT Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and programmable I/O peripherals. The PIC16LC662 belongs to the mid-range PIC16 architecture, sitting in the PIC microcontroller family hierarchy as: PIC16LC662 -> PIC16 mid-range MCU -> 8-bit RISC microcontroller -> embedded controller -> semiconductor. The 14-bit instruction word and 35-instruction RISC core make it well suited to low-power, deterministic embedded control tasks.
Key features include 8-bit data width, 7KB OTP for firmware storage, 176-byte data RAM, 33 I/O pins with programmable direction, four oscillator modes (RC, LP, XT, HS) selectable in software, and an external oscillator interface. On-chip peripherals typically include timers, a watchdog timer, and an analog comparator. The 4 MHz maximum clock and 33 I/O make the device well matched to mid-complexity control loops.
Typical applications include industrial automation controllers, consumer electronics front panels, automotive body and comfort modules, low-end sensor signal conditioning, and small white-goods appliances. Designers typically pair the LC662 with external EEPROM, an LCD driver, and an RS-232/RS-485 transceiver when building human-machine interfaces or distributed sensor nodes.
When designing with this device, ensure the OTP programming window is reserved on the PCB (high-voltage VPP access) since OTP parts cannot be reprogrammed. Place a 0.1 uF decoupling capacitor on every VDD/VDDC pin pair and route the external clock or crystal within 1 cm of the OSC1/OSC2 pins to maintain signal integrity.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet, helping engineers select and source compatible PIC16LC662 variants for legacy or new designs.
Alternatives de remplacement direct pour PIC16LC662T-04/PT — 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 PIC16LC662T-04/PT (même facteur de forme et même empreinte) — différant par Program Memory Size, RAM Size, Mounting Type, Package / Case, ADC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16LC662-04I/PT
✅ Remplacement direct✓ En stock
$4.25 / unité
Voir la fiche technique →PIC16LC662-04/L
✅ Remplacement direct✓ En stock
$4.95 / unité
Voir la fiche technique →PIC16LC66-04I/SP
✅ Remplacement direct✓ En stock
$3.65 / unité
Voir la fiche technique →PIC16LC66-04I/SO
✅ Remplacement direct✓ En stock
$2.78 / unité
Voir la fiche technique →PIC16LC66-04/SO
✅ Remplacement direct✓ En stock
$2.4 / unité
Voir la fiche technique →PIC16F946-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LC662T-04/PT Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit RISC Microcontroller (MCU) |
| Family | PIC16 mid-range |
| Program Memory Size | 7 KB (4K x 14) OTP |
| RAM Size | 176 x 8 bytes |
| Number of I/O | 33 |
| Fréquence d'horloge maximale | 4 MHz |
| Instruction Cycle Time | 200 ns (single-cycle) |
| Tension d'alimentation | 3.0 V to 6.0 V (3.3 V / 5 V nominal) |
| Température de fonctionnement | -40 C to +85 C (industrial, inferred from /PT suffix) |
| Boîtier / Format | 44-pin TQFP (PT) |
| Type de montage | Surface Mount |
| Oscillator Type | External |
| Instruction Set | 35 instructions, 14-bit word |
| Packaging | Tape & Reel (TR) |
Configuration des broches de PIC16LC662T-04/PT
| Broche 1 | RA0/AN0 — PORTA bit 0 / analog input 0 (multiplexed) |
| Broche 2 | RA1/AN1 — PORTA bit 1 / analog input 1 (multiplexed) |
| Broche 3 | RA2/AN2 — PORTA bit 2 / analog input 2 (multiplexed) |
| Broche 4 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| Broche 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Broche 6 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| Broche 7 | VSS — Ground reference |
| Broche 8 | OSC1/CLKIN — External clock input / crystal oscillator pin 1 |
| Broche 9 | OSC2/CLKOUT — Crystal oscillator pin 2 / clock output |
| Broche 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| Broche 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| Broche 12 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM 1 |
| Broche 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Broche 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Broche 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| Broche 16 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Broche 17 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Broche 18 | VSS — Ground reference |
| Broche 19 | VDD — Positive supply (3.0-6.0 V) |
| Broche 20 | RB0/INT — PORTB bit 0 / external interrupt |
| Broche 21 | RB1 — PORTB bit 1 |
| Broche 22 | RB2 — PORTB bit 2 |
| Broche 23 | RB3 — PORTB bit 3 |
| Broche 24 | RB4 — PORTB bit 4 |
| Broche 25 | RB5 — PORTB bit 5 |
| Broche 26 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Broche 27 | RB7/PGD — PORTB bit 7 / ICSP data |
| Broche 28 | MCLR/VPP — Master clear reset / OTP programming voltage |
| Broche 29 | RD0 — PORTD bit 0 |
| Broche 30 | RD1 — PORTD bit 1 |
| Broche 31 | RD2 — PORTD bit 2 |
| Broche 32 | RD3 — PORTD bit 3 |
| Broche 33 | RD4 — PORTD bit 4 |
| Broche 34 | RD5 — PORTD bit 5 |
| Broche 35 | RD6 — PORTD bit 6 |
| Broche 36 | RD7 — PORTD bit 7 |
| Broche 37 | RE0/RD — PORTE bit 0 / parallel-port read strobe |
| Broche 38 | RE1/WR — PORTE bit 1 / parallel-port write strobe |
| Broche 39 | RE2/CS — PORTE bit 2 / parallel-port chip select |
| Broche 40 | VDD — Positive supply (3.0-6.0 V) |
| Broche 41 | VSS — Ground reference |
| Broche 42 | NC — Not connected (per datasheet, pin reserved) |
| Broche 43 | NC — Not connected (per datasheet, pin reserved) |
| Broche 44 | NC — Not connected (per datasheet, pin reserved) |
Applications typiques
PIC16LC662T-04/PT convient pour 6 applications: Industrial Automation Controllers, Consumer Electronics Front Panels, Automotive Body and Comfort Modules, Low-End Sensor Signal Conditioning, White-Goods and Appliance Control, Human-Machine Interface (HMI) Sub-Controllers.
Industrial Automation Controllers
The PIC16LC662T-04/PT's 33 programmable digital I/O lines and 7 KB OTP program memory make it a strong fit for industrial automation controllers that drive relays, read contact closures, and sequence conveyor or motor-control logic. The 4 MHz clock delivers 5 MIPS of deterministic throughput, which is more than enough for PLC-style scan loops running under 10 ms. Designers typically pair the LC662 with opto-isolated inputs and triac/SSR outputs, using the 176-byte RAM to hold scan state and fault flags. The OTP memory is acceptable because industrial controller firmware rarely changes after deployment. Wide 3.0-6.0 V supply tolerance allows direct connection to 5 V or 24 V-derived rails after regulation.
Recommandé
Consumer Electronics Front Panels
Consumer front-panel controllers typically need 16-32 I/O for key-scanning, LED driving, and LCD segment control - exactly the resource envelope of the PIC16LC662T-04/PT. The 35-instruction RISC core and 200 ns instruction cycle produce deterministic button-debounce and LED-multiplex timing without an RTOS. The wide 3.0-6.0 V supply range lets designers share the 5 V standby rail with the rest of the appliance. With OTP program memory, finished-goods cost is minimized and firmware cloning is deterred - both desirable in high-volume consumer products. Recommended companion parts include external EEPROM for user preferences and a low-cost LCD driver for character displays.
Recommandé
Automotive Body and Comfort Modules
Body controllers for window lifts, mirror adjust, seat-position memory, and interior lighting typically run at 5 V and require 20-40 I/O lines for switch scanning and actuator drive - a natural fit for the PIC16LC662T-04/PT's 33 I/O and 5 V operation. The OTP memory prevents unauthorized firmware modification in dealer-service channels. Automotive body controllers typically multiplex actuators with on-board MOSFET drivers and use the LC662's 176-byte RAM to hold current positions. Note that this part is not AEC-Q100 qualified; for new designs targeting -40 C to +125 C automotive temperature ranges, use PIC16F-series automotive (Q) variants in the same TQFP-44 footprint.
Recommandé
Low-End Sensor Signal Conditioning
Distributed sensor nodes that digitize analog signals and transmit them via UART, SPI, or LIN often need only a few analog inputs and modest program memory - the PIC16LC662T-04/PT can play that role at 5 V. The 4 MHz clock can comfortably service a 4800-9600 baud UART, a 100 kHz SPI master, or a LIN slave bus. The 33 I/O allow connection of several sensor channels plus a serial link. Designers typically route the analog front-end through a comparator or an external ADC, since the LC662 itself has no internal ADC ([DATA_NEEDED: confirm ADC presence]). The OTP memory protects calibration coefficients from being overwritten in the field.
Recommandé
White-Goods and Appliance Control
Washing machines, dishwashers, microwave ovens, and small kitchen appliances use the PIC16LC662T-04/PT family for the user-interface and timing controller. The 33 I/O handle the keypad, display, door switch, and several triac-driven loads (pump, valve, heater). The 200 ns instruction cycle is plenty for the slow sequencing loops typical of appliances, and the wide 3.0-6.0 V supply allows operation directly from a 5 V rectified mains rail. The 7 KB OTP holds both the appliance cycle code and the safety-timeout logic, while the 176-byte RAM covers current cycle state and error flags.
Recommandé
Human-Machine Interface (HMI) Sub-Controllers
The PIC16LC662T-04/PT is well suited as a sub-controller in larger HMIs that handle keypad scanning, LCD refresh, and buzzer/LED feedback while a host processor manages the main application. Its 33 I/O are sufficient for 4x4 keypads plus a parallel character LCD interface, and the 4 MHz instruction cycle can refresh a 16x2 LCD without flicker. The OTP memory locks down the UI firmware to prevent accidental reprogramming during field service. The 176-byte RAM holds key debounce state, LCD cursor position, and a small menu stack. Recommended companion parts include a character-LCD module and an I2C GPIO expander when more I/O is needed.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LC662T-04/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16LC662-04I/PT | PIC16LC662-04/L | PIC16LC66-04I/SP | PIC16LC66-04I/SO | PIC16F946-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 14 KB Flash |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Number of I/O | 33 | 33 | 33 | 33 | 33 | 53 |
| RAM Size | 176 x 8 | 176 x 8 | 176 x 8 | 176 x 8 | 176 x 8 | 336 x 8 |
| Memory Type | OTP (One-Time Programmable) | OTP | OTP | OTP | OTP | Flash (re-programmable) |
| Supply Voltage | 3.0 V to 6.0 V | 3.0 V to 6.0 V | 3.0 V to 6.0 V | 3.0 V to 6.0 V | 3.0 V to 6.0 V | 2.0 V to 5.5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
Principaux différenciateurs
- Flash-based modern equivalent with active lifecycle (vs PIC16LC662T-04/PT (this product))
- Same Microchip silicon at slightly relaxed grade (vs PIC16LC662-04I/PT)
- Sister PIC16C66 family with same instruction set (vs PIC16LC66-04I/SP)
Notes de conception
Place a 0.1 uF decoupling ceramic capacitor on every VDD/VDDC pin pair (pins 19 and 40 on this TQFP-44), with the cap leads kept under 3 mm to minimize lead inductance. For 5 V designs drawing up to 25 mA, add a bulk 10 uF tantalum or aluminum-polymer capacitor on the main 5 V rail within 1 cm of the MCU. VSS pins (7, 18, 41) must all be tied to a low-impedance ground plane to reduce EMI and provide a stable reference for the analog pins.
Route the external clock or crystal (pins 8 and 9) within 1 cm of the MCU and keep the traces short, matched, and surrounded by a ground guard ring. Avoid routing digital I/O traces under the OSC pins to prevent clock corruption from capacitive coupling. Place the MCLR/VPP pull-up resistor (typically 10 kohm) close to pin 28, and provide a clean test-point access for in-circuit programming if the OTP part will be programmed after PCB assembly.
Do not exceed the maximum VDD of 6.0 V on the LC662 - the 'LC' low-voltage process has lower absolute-maximum ratings than the standard 'C' PIC16C662 part. Configure unused I/O as outputs (not inputs) to prevent floating-pin shoot-through current that can add 1-2 mA per pin. The OTP memory cannot be re-programmed: verify the entire firmware image before programming to avoid scrapping an entire reel. Finally, ensure the high-voltage VPP signal on pin 28 is fully discharged before applying VDD, or the part may latch up.
Informations de conformité
Compliance data not explicitly published in the verified web data. Most Microchip PIC16LC662 parts from the late 1990s were supplied in matte-tin finish with lead-free reflow compatibility, but RoHS compliance must be confirmed with the manufacturer before use in restricted-substance products.