PIC16LC62AT-04/SO - 8-Bit PIC MCU 4MHz 3.5KB OTP | 28-SOIC
MPN: PIC16LC62AT-04/SO ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.65 | $46.50 |
| 100 | $4.12 | $412.00 |
| 500 | $3.68 | $1,840.00 |
| 1,000 | $3.25 | $3,250.00 |
PIC16LC62AT-04/SO Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, peripherals, and I/O on one die; it sits at the lowest tier of the embedded processor hierarchy, below 16-bit and 32-bit MCUs, and is optimized for cost-sensitive deterministic control tasks. The PIC16C/LC family uses a Harvard RISC architecture with a small instruction set and a one-instruction-per-cycle pipeline, making the LC62A well-suited to real-time control loops where predictable timing matters more than raw throughput.
Key features include a 4 MHz maximum clock, OTP (one-time programmable) program memory for low-cost high-volume production, 22 general-purpose I/O pins, an operating voltage range of typically 2.5 V to 6.0 V (with the LC (low-voltage) variant extending low-end operation), and CMOS static design for low quiescent current. Peripherals follow the standard PIC16 mid-range set including timers, a Watchdog Timer, and analog/digital I/O.
This member of the family is the LC (low-voltage) version in the SOIC wide-body package with industrial-grade operating range and tape-and-reel packaging (suffix T). It belongs to the mid-range PIC16 MCU family, which sits between the baseline PIC10/12/16 and the enhanced PIC18 families in the Microchip 8-bit MCU hierarchy.
Typical applications include industrial control systems, consumer electronics, automotive subsystems, appliance control boards, and general-purpose embedded logic. The 22 I/O count and 3.5 KB code space comfortably handle keypad scanning, LED drive, simple sensor reading, and basic UART/I2C-style protocol bit-banging.
When designing with this device, plan firmware carefully because OTP memory cannot be reprogrammed in-circuit; use the windowed or flash sibling (PIC16F62x family) for prototyping and reserve OTP for production. Also note that several PIC16LC62A order-code suffixes encode operating temperature, voltage, and packaging options, so always cross-check the exact MPN against the datasheet ordering table before committing to a layout.
This page synthesizes the manufacturer's datasheet specifications, distributor pricing tiers, drop-in alternative part numbers (same package and pinout), and practical design notes that complement the original datasheet and accelerate engineering decisions.
Drop-in alternatives for PIC16LC62AT-04/SO — 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 PIC16LC62AT-04/SO (same form factor and footprint) — differing in Operating Temperature Range, Package, Program Memory Type, Program Memory Size, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LC62A-04/SO
✅ Drop-In✓ In Stock
$2.39 / Unit
View Datasheet →PIC16LC62BT-04/SO
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →PIC16LC62AT-04I/SO
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC16LC62A-04I/SO
✅ Drop-In✓ In Stock
$1.74 / Unit
View Datasheet →PIC16LC62AT-04E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LC62AT-04/SO Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC |
| Family | PIC® 16C |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14 bits) |
| Data RAM | 128 bytes |
| Maximum Clock Frequency | 4 MHz |
| Supply Voltage Range | 2.5 V to 6.0 V (nominal 5.0 V) |
| Number of I/O Pins | 22 |
| Number of Pins | 28 |
| Package | 28-SOIC (wide body) |
| Mounting Type | Surface Mount |
| Architecture | Harvard RISC, fully static CMOS |
| Operating Temperature Range | 0 C to +70 C |
| Packaging | Tape and Reel (suffix T) |
PIC16LC62AT-04/SO Pin Configuration
| Pin 1 | RA2 — PORTA bit 2 (digital I/O) |
| Pin 2 | RA3 — PORTA bit 3 (digital I/O) |
| Pin 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (open-drain) |
| Pin 4 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — PORTB bit 0 / external interrupt input |
| Pin 7 | RB1 — PORTB bit 1 (digital I/O) |
| Pin 8 | RB2 — PORTB bit 2 (digital I/O) |
| Pin 9 | RB3 — PORTB bit 3 (digital I/O) |
| Pin 10 | RB4 — PORTB bit 4 (digital I/O) |
| Pin 11 | RB5 — PORTB bit 5 (digital I/O) |
| Pin 12 | RB6 — PORTB bit 6 (digital I/O) |
| Pin 13 | RB7 — PORTB bit 7 (digital I/O) |
| Pin 14 | VSS — Ground reference (second VSS pin on 28-pin SOIC) |
| Pin 15 | OSC2/CLKOUT — Oscillator output / clock out |
| Pin 16 | OSC1/CLKIN — Oscillator input / external clock in |
| Pin 17 | RC0 — PORTC bit 0 (digital I/O) |
| Pin 18 | RC1 — PORTC bit 1 (digital I/O) |
| Pin 19 | RC2 — PORTC bit 2 (digital I/O) |
| Pin 20 | RC3 — PORTC bit 3 (digital I/O) |
| Pin 21 | RC4 — PORTC bit 4 (digital I/O) |
| Pin 22 | RC5 — PORTC bit 5 (digital I/O) |
| Pin 23 | RC6 — PORTC bit 6 (digital I/O) |
| Pin 24 | RC7 — PORTC bit 7 (digital I/O) |
| Pin 25 | VSS — Ground reference (third VSS pin) |
| Pin 26 | VDD — Positive supply (2.5 V to 6.0 V) |
| Pin 27 | RA0 — PORTA bit 0 (digital I/O) |
| Pin 28 | RA1 — PORTA bit 1 (digital I/O) |
Typical Applications
PIC16LC62AT-04/SO is suitable for 6 applications: Industrial Control Panels, Consumer Appliance Controls, Automotive Body Electronics, Sensor Interface Modules, LED Display Drivers, General-Purpose Embedded Logic Replacement.
Industrial Control Panels
The PIC16LC62AT-04/SO is well-suited to industrial control panels where deterministic 8-bit control and 22 I/O pins are sufficient. Its 4 MHz PIC16 RISC core executes single-cycle instructions, providing predictable loop timing for relay sequencing and sensor polling. The 3.5 KB OTP memory holds complete panel logic, while 2.5 V to 6.0 V supply tolerance accepts common 5 V and 24 V-derived rails after regulation. Compared with newer flash MCUs, the OTP cost advantage in high-volume panel builds remains relevant; ensure a windowed sibling is used for firmware development.
Recommended
Consumer Appliance Controls
In washing machines, microwave ovens, and small kitchen appliances, the PIC16LC62AT-04/SO drives LED indicators, scans keypads, and times motor/relay events. The 22 I/O pins handle display multiplexing plus sensor inputs (temperature, door, water level) without external expanders. 5 V tolerance simplifies interfacing to TRIAC drivers and zero-cross detectors. The Harvard RISC pipeline at 4 MHz provides fast interrupt response, critical for safety timing in heating elements. Designers should reserve the OTP windowed variant for code development.
Recommended
Automotive Body Electronics
Within automotive body modules (interior lighting, mirror control, simple sensor clusters) the PIC16LC62AT-04/SO performs timing, debounce, and PWM-like functions for low-speed actuators. The 22 I/O and 4 MHz performance fit lamp drivers and seat-position switches, while the LC voltage range handles 5 V regulated rails derived from 12 V battery. However, the commercial 0 C to +70 C temperature range is insufficient for under-hood use; designers should select the I-suffix variant or migrate to AEC-Q100 qualified PIC16F equivalents for production.
Recommended
Sensor Interface Modules
The PIC16LC62AT-04/SO is a strong fit for low-cost sensor interface boards reading thermistors, photodiodes, and mechanical switches. Its 22 I/O accommodate multi-channel analog multiplexing via external MUXes, and the 4 MHz core handles linearization math and digital filtering in firmware. The 128-byte RAM is tight but workable for circular buffers, while the 3.5 KB OTP stores lookup tables. Compared with ARM Cortex-M0 alternatives, this PIC16 delivers lower BOM cost when only basic digital I/O and timers are needed.
Recommended
LED Display Drivers
Driving multiplexed 7-segment or matrix LED displays is a classic application for the PIC16LC62AT-04/SO. The 22 I/O pins comfortably handle 8-digit 7-segment multiplexing plus button inputs, and the 4 MHz PIC16 instruction cycle enables clean refresh rates above 100 Hz with no visible flicker. The OTP memory stores character maps and animation sequences, while the 128-byte RAM holds display buffers. Designers should keep I/O toggle rates within the 20 mA source/sink limits stated in the datasheet to avoid port damage.
Recommended
General-Purpose Embedded Logic Replacement
The PIC16LC62AT-04/SO serves as a low-cost, software-defined replacement for discrete 74HC logic glue. With 22 I/O and 3.5 KB of OTP code space, designers can implement custom encoder/decoder functions, sequence timers, and handshake converters in firmware rather than gates. The 4 MHz core runs all logic at deterministic latency, simplifying timing budgets. Unlike CPLD solutions, this PIC16 needs no ISP programmer for OTP; however, designers should plan for windowed/flash variants during firmware iteration before committing to OTP for production.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LC62AT-04/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LC62A-04/SO | PIC16LC62BT-04/SO | PIC16LC62AT-04I/SO | PIC16LC62A-04I/SO | PIC16LC62AT-04E/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (wide body) | 28-SOIC (wide body) - same | 28-SOIC (wide body) - same | 28-SOIC (wide body) - same | 28-SOIC (wide body) - same | 28-SOIC (wide body) - same |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP |
| Data RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Number of I/O Pins | 22 | 22 | 22 | 22 | 22 | 22 |
| Supply Voltage Range | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V (extended) | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V |
| Operating Temperature | 0 C to +70 C (commercial) | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | 0 C to +70 C |
| Packaging Form | Tape & Reel | Tube | Tape & Reel | Tape & Reel | Tube | Tape & Reel |
Key Differentiators
- Identical die to PIC16LC62A-04/SO with tape-and-reel packaging (vs PIC16LC62A-04/SO)
- Industrial temperature range option in the same package (vs PIC16LC62AT-04I/SO)
- Extended-voltage revision B option in the same footprint (vs PIC16LC62BT-04/SO)
Design Notes
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 26 on the 28-SOIC) with a short trace to the nearest VSS pin. The PIC16LC62AT-04/SO draws roughly 2 mA active at 4 MHz and 5 V; insufficient decoupling can cause code-execution glitches during high-current port toggling. For designs that power the MCU from a switching regulator, add a 10 uF bulk capacitor on the VDD rail.
OTP memory cannot be re-programmed in-circuit. Always develop and validate firmware on a windowed UV-erasable sibling (PIC16C62A JW) or a flash-based drop-in (PIC16F628A) before committing to OTP production parts. A single code bug locked into OTP means scrapping the entire batch. Plan a firmware version-control strategy that uses the flash variant for engineering builds.
Route the OSC1/OSC2 traces short and symmetrical to minimize parasitic capacitance; long traces can shift the resonator's effective load and reduce oscillator margin at 4 MHz. Keep digital switching traces (especially RB0/INT and high-frequency PORTB outputs) away from the oscillator loop. Per Microchip layout guidelines, surround the crystal with a ground guard ring connected to the nearest VSS pin to suppress EMI coupling.
RA4 is an open-drain output requiring an external pull-up resistor (typically 4.7 kohm to 10 kohm) when used as a digital output. Driving RA4 directly with a logic-high load will fail to register a high level. Additionally, ensure MCLR is pulled high through a 10 kohm resistor with a 100 nF cap to VDD for proper reset behavior during power-up; a floating MCLR causes intermittent brown-out resets.
Compliance Information
Compliance status not explicitly stated in the verified web snippets; RoHS, REACH, lead-free, and halogen-free information should be confirmed against the manufacturer's full material declaration before use in RoHS-restricted designs.
