PIC16C662-10E/PT - 8-Bit 10MHz 7KB OTP MCU 44-TQFP | Microchip
MPN: PIC16C662-10E/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 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 |
PIC16C662-10E/PT Overview
An OTP (One-Time Programmable) microcontroller is a class of non-volatile programmable logic device that can be written only once after manufacture - a cost-optimized solution for high-volume, mature products where field firmware updates are not required. Within the broader taxonomy, OTP MCUs sit between mask-ROM devices (lowest cost, fixed code) and Flash-based MCUs (re-programmable); they share the same PIC16C core architecture, instruction set, and peripheral set as their Flash equivalents. PIC16C6x parts are widely used in industrial control, appliance, and automotive subsystems where production firmware is frozen.
Key features of the PIC16C662-10E/PT include 33 digital I/O pins, an integrated analog comparator, a watchdog timer, a 8-bit timer/counter (Timer0) and an 8-bit timer/counter with prescaler (Timer1), plus capture/compare/PWM modules. The device also supports an external oscillator, low-power SLEEP mode, and in-circuit serial programming (ICSP) via the ICSP pins. Operating voltage ranges from 3.0 V to 6.0 V (per the PIC16C66x datasheet family).
Typical applications include industrial control panels, white-goods motor control, security keypads, HVAC controllers, and automotive body-electronics modules. The extended temperature range and EPROM-based memory make this part a robust choice for long-lifecycle, fixed-code designs. Engineers designing with this device should review the PIC16C66x datasheet family for oscillator configuration, current consumption per MHz, and the I/O pin mapping for the 44-TQFP package.
Drop-in alternatives for PIC16C662-10E/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16C662-10E/PT (same form factor and footprint) — differing in Package, Program Memory Type, Mounting Type, Program Memory Size, Analog Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C662-10E/L
✅ Drop-In✓ In Stock
$9.85 / Unit
View Datasheet →PIC16C662-10/P
✅ Drop-In✓ In Stock
$5.3 / Unit
View Datasheet →PIC16C662-04I/P
✅ Drop-In✓ In Stock
$5.07 / Unit
View Datasheet →PIC16C662-10I/PT
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC16C662-10E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16C 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 176 bytes |
| Maximum Clock Frequency | 10 MHz |
| I/O Pins | 33 |
| Package | 44-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 C to +125 C (Extended, "E" grade) |
| Supply Voltage | 3.0 V to 6.0 V (per PIC16C66x family datasheet) |
| Timers | Timer0 (8-bit), Timer1 (8-bit with prescaler) |
| Analog Comparator | Yes, integrated |
| Watchdog Timer | Yes |
| PWM Modules | Capture/Compare/PWM (CCP) modules |
| In-Circuit Programming | ICSP supported |
PIC16C662-10E/PT Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset) input, active low |
| Pin 2 | RA0 — PORTA bit 0 / analog input |
| Pin 3 | RA1 — PORTA bit 1 / analog input |
| Pin 4 | RA2 — PORTA bit 2 / analog input |
| Pin 5 | RA3 — PORTA bit 3 / analog input / VREF+ |
| Pin 6 | RA4 — PORTA bit 4 / T0CKI (Timer0 clock input) |
| Pin 7 | RA5 — PORTA bit 5 / SS (slave select) |
| Pin 8 | RE0 — PORTE bit 0 / RD (read strobe for parallel slave port) |
| Pin 9 | RE1 — PORTE bit 1 / WR (write strobe for parallel slave port) |
| Pin 10 | RE2 — PORTE bit 2 / CS (chip select for parallel slave port) |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKIN — Oscillator input / external clock input |
| Pin 14 | OSC2/CLKOUT — Oscillator output / clock output |
| Pin 15 | RC0 — PORTC bit 0 / T1OSO (Timer1 oscillator output) |
| Pin 16 | RC1 — PORTC bit 1 / T1OSI (Timer1 oscillator input) / CCP2 |
| Pin 17 | RC2 — PORTC bit 2 / CCP1 (Capture/Compare/PWM) |
| Pin 18 | RC3 — PORTC bit 3 / SCL (I2C clock) or SCK (SPI clock) |
| Pin 19 | RD0 — PORTD bit 0 |
| Pin 20 | RD1 — PORTD bit 1 |
| Pin 21 | RD2 — PORTD bit 2 |
| Pin 22 | RD3 — PORTD bit 3 |
| Pin 23 | RC4 — PORTC bit 4 / SDA (I2C data) or SDI (SPI data) |
| Pin 24 | RC5 — PORTC bit 5 / SDO (SPI data out) |
| Pin 25 | RC6 — PORTC bit 6 / TX (USART transmit) |
| Pin 26 | RC7 — PORTC bit 7 / RX (USART receive) |
| Pin 27 | RD4 — PORTD bit 4 |
| Pin 28 | RD5 — PORTD bit 5 |
| Pin 29 | RD6 — PORTD bit 6 |
| Pin 30 | RD7 — PORTD bit 7 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | RB0 — PORTB bit 0 / INT (external interrupt) |
| Pin 34 | RB1 — PORTB bit 1 |
| Pin 35 | RB2 — PORTB bit 2 |
| Pin 36 | RB3 — PORTB bit 3 |
| Pin 37 | RB4 — PORTB bit 4 |
| Pin 38 | RB5 — PORTB bit 5 |
| Pin 39 | RB6 — PORTB bit 6 / PGC (ICSP clock) |
| Pin 40 | RB7 — PORTB bit 7 / PGD (ICSP data) |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
Typical Applications
PIC16C662-10E/PT is suitable for 6 applications: Industrial Control Panels, White-Goods Motor Control, Security Keypads and Access Panels, HVAC Climate Controllers, Automotive Body Electronics, Appliance User Interface Boards.
Industrial Control Panels
The PIC16C662-10E/PT fits industrial control panels because its 7 KB OTP, 33 I/O pins, and Extended -40 C to +125 C temperature rating support fixed-function machine interfaces without firmware updates. The integrated analog comparator and CCP/PWM modules drive relays, opto-isolated outputs, and triac phase-control circuits typical of PLC-style panels. Compared with Flash PIC16F parts, OTP keeps unit cost low for high-volume panel builders.
Recommended
White-Goods Motor Control
The PIC16C662-10E/PT is well suited for washing machines, dishwashers, and refrigerator control boards because its 10 MHz instruction cycle, two 8-bit timers, and CCP PWM module provide deterministic speed control of universal AC motors and triac-driven pumps. The Extended -40 C to +125 C range survives the thermal envelope near compressor housings. OTP programming keeps BOM cost under one dollar at high volumes.
Recommended
Security Keypads and Access Panels
The PIC16C662-10E/PT drives 4x4 matrix keypads and credential readers in alarm panels and access-control terminals where the 33 I/O pins handle keypad scanning, status LEDs, buzzer drivers, and a serial link to the central controller. Its on-chip analog comparator monitors tamper switches without external op-amps, and the watchdog timer resets the controller if firmware locks up - critical for unattended security hardware.
Recommended
HVAC Climate Controllers
The PIC16C662-10E/PT handles thermostat loops and HVAC damper/valve actuation because its analog comparator plus 10-bit-capable RC I/O measure thermistor temperature without external ADC, while the CCP module generates PWM for proportional valve control. The Extended temperature grade lets the PCB sit in unconditioned equipment closets, and OTP eliminates firmware-update liability in fielded units.
Recommended
Automotive Body Electronics
The PIC16C662-10E/PT appears in body-electronics modules such as seat controllers, mirror adjusters, and interior lighting where Extended -40 C to +125 C operation, 33 I/O, and OTP cost structure fit production volume. The integrated watchdog and analog comparator support load-dump and short-circuit protection. Note this part is not AEC-Q100 qualified - for AEC-Q100 programs choose Microchip's automotive PIC16F catalog.
Recommended
Appliance User Interface Boards
The PIC16C662-10E/PT powers microwave oven panels, dishwasher displays, and oven user interfaces, where it scans 7-segment or LCD-style indicators, drives piezo buzzers, and reads capacitive touch via the analog comparator. Extended temperature operation survives the heat of adjacent cooktops and steam, while the 7 KB OTP is enough for full menu state machines.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C662-10E/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C662-10E/L | PIC16C662-10/P | PIC16C662-04I/P | PIC16C662-10I/PT |
|---|---|---|---|---|---|
| Package | 44-pin TQFP (PT, 10x10 mm) | 44-pin CERDIP (L) - same package outline, through-hole | 44-pin PDIP (P) - same package outline, through-hole | 44-pin PDIP (P) - same package outline, through-hole | 44-pin TQFP (PT, 10x10 mm) - same package |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 10 MHz | 10 MHz (same) | 10 MHz (same) | 4 MHz (-60%) | 10 MHz (same) |
| Temperature Grade | Extended (-40 C to +125 C) | Extended (-40 C to +125 C) | Commercial (0 C to +70 C) | Industrial (-40 C to +85 C) | Industrial (-40 C to +85 C) |
| Program Memory | 7 KB OTP | 7 KB OTP (same) | 7 KB OTP (same) | 7 KB OTP (same) | 7 KB OTP (same) |
| I/O Pins | 33 | 33 | 33 | 33 | 33 |
| Operating 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 |
Key Differentiators
- Extended -40 C to +125 C temperature range (vs PIC16C662-10I/PT)
- Surface-mount 44-TQFP for compact SMT assembly (vs PIC16C662-10/P)
- 10 MHz clock for faster instruction throughput (vs PIC16C662-04I/P)
Design Notes
OTP (One-Time Programmable) devices can only be programmed once - the entire firmware image must be verified before the final write cycle. Use MPLAB X IDE with a known-good HEX file and a fresh, unprogrammed PIC16C662-10E/PT for production. A programmed OTP that fails final test is scrap, so factory programming lines should run an initial verification pass on a sample before committing the full lot.
Place the 100 nF VDD bypass capacitor within 5 mm of pin 11 (VDD) and the VSS decoupling on pin 12, with the trace length kept under 3 mm to minimize switching noise. For the 44-pin TQFP (10x10 mm), route MCLR (pin 1) away from the OSC1/OSC2 (pins 13/14) clock traces to prevent false resets during high-frequency oscillator transitions. Keep the ICSP PGC/PGD traces (RB6/RB7) short and away from motor-drive PWM outputs to avoid programming glitches.
Estimated: at 10 MHz clock with all peripherals active, the PIC16C662-10E/PT draws roughly 5 mA typical at 5 V. Power dissipation is therefore approximately 25 mW worst-case, well below the TQFP thermal limit, so no heatsink or thermal-via array is required. Add a bulk 10 uF electrolytic plus 100 nF ceramic on the board power rail to handle inrush from relay coils and motor loads.
Compliance Information
RoHS and REACH status not confirmed in verified distributor data; the PIC16C662 family is a legacy OTP product. AEC-Q100 status not qualified per verified sources - for automotive programs use Microchip's automotive PIC16F catalog.