PIC16C62A-04/SP - 8-bit 4MHz 3.5KB OTP MCU | Microchip | 28-SPDIP
MPN: PIC16C62A-04/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.93 | $6.93 |
| 10 | $6.24 | $62.40 |
| 100 | $5.55 | $555.00 |
| 500 | $4.99 | $2,495.00 |
| 1,000 | $4.45 | $4,450.00 |
PIC16C62A-04/SP Overview
An 8-bit OTP microcontroller is a single-chip computer built on an 8-bit data path with non-volatile program memory that can be written exactly once by the user. These devices sit inside the broader hierarchy of microcontrollers → embedded processors → semiconductor ICs, and historically dominated cost-sensitive, mid-volume embedded control applications before Flash-based MCUs became economical. The PIC16C family is part of Microchip's PIC16 → PICmicro → 8-bit MCU taxonomy, which uses a RISC-style instruction set designed for deterministic, single-cycle execution on most opcodes.
Key features of the PIC16C62A-04/SP include 35 single-word instructions, a 14-bit instruction word, 8-bit data path, 4 MHz oscillator input, on-chip peripherals such as timers, a watchdog timer, and a synchronous/asynchronous serial port (SSP). Power consumption is a notable feature: typical supply current is approximately 15 µA at 5 V / 4 MHz and around 1 µA at 3 V / 32 kHz, supporting battery-friendly designs. The 28-SPDIP package provides a 0.300 inch (7.62 mm) row spacing, which is convenient for prototyping, breadboarding, and educational use.
Architecturally, the PIC16C62A-04/SP uses a Harvard memory layout (separate program and data buses) and a fully static design that allows the clock to be stopped without losing register state. Its OTP EPROM cell technology is the main reason the part is positioned at lower price points than equivalent Flash-based PIC16F devices, but it also means firmware cannot be rewritten in-circuit; programming is performed with a device programmer such as the MPLAB PM3.
Typical applications include blood-pressure monitors and other low-power medical instruments, appliance controls, automotive body and comfort subsystems, consumer electronics, security and alarm panels, and industrial sensor interfaces. The combination of low power consumption, deterministic core, and DIP package makes the PIC16C62A-04/SP a frequent choice for legacy designs, hobby projects, and through-hole industrial control modules.
When designing with this part, the OTP memory limitation is the most important trade-off: once programmed, the device cannot be re-flashed. Engineers should validate firmware with a socketed or windowed version, or consider the pin-compatible PIC16F62A / PIC16F72 family for in-circuit reprogrammability. Decoupling, oscillator layout, and MCLR reset hardware should follow Microchip's PIC16C6x reference design recommendations.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in same-package alternatives, and practical design notes that are not collected in the manufacturer datasheet PDF, helping engineers select, source, and qualify the part quickly.
Drop-in alternatives for PIC16C62A-04/SP — 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 PIC16C62A-04/SP (same form factor and footprint) — differing in Operating Temperature Range, Peripherals, RoHS Status, Program Memory Size, Program Memory Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C62A-04I/SP
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →PIC16C62A-10/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$3.65 / Unit
View Datasheet →PIC16C62A-20/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$5.1 / Unit
View Datasheet →PIC16C62A-04E/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$7.2 / Unit
View Datasheet →PIC16C62-04/SP
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16C62A-04/SP Maximum Ratings & Electrical Characteristics
| Core | PIC16C6x (8-bit RISC) |
| Instruction Set Architecture | 14-bit instruction word, 35 single-word instructions |
| Program Memory Type | OTP (One-Time-Programmable) EPROM |
| Program Memory Size | 3.5 KB (2K × 14) |
| Data RAM | 128 bytes |
| Maximum Clock Frequency | 4 MHz |
| Operating Voltage Range | 2.5 V to 6.0 V (wide range, up to 6.0 V) |
| I/O Pins | 22 |
| Supply Current (typical) | 15 µA at 5 V / 4 MHz; 1 µA at 3 V / 32 kHz |
| Operating Temperature Range | Commercial / Industrial / Extended (per datasheet S-pkg = 0 °C to +70 °C commercial) |
| Package | 28-pin SPDIP (Skinny DIP), 0.300 inch row spacing |
| Mounting Type | Through-Hole |
| On-chip Peripherals | Timers, Watchdog Timer, Synchronous Serial Port (SSP) |
| Technology | Low-power, high-speed CMOS EPROM/ROM, fully static |
| RoHS Status | Compliant (per Microchip product page) |
| Lead-Free | Yes (lead-free finish per Microchip marking) |
PIC16C62A-04/SP Pin Configuration
| Pin 1 | MCLR — Master Clear reset input (active low) |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input |
| Pin 4 | RA2/AN2 — PORTA bit 2 / analog input |
| Pin 5 | RA3/AN3/VREF — PORTA bit 3 / analog input / VREF |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/SS/AN4 — PORTA bit 5 / SSP slave select / analog input |
| Pin 8 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| Pin 9 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Pin 10 | INT/RB0 — PORTB bit 0 / external interrupt |
| Pin 11 | RB1 — PORTB bit 1 |
| Pin 12 | RB2 — PORTB bit 2 |
| Pin 13 | RB3 — PORTB bit 3 |
| Pin 14 | RB4 — PORTB bit 4 |
| Pin 15 | RB5 — PORTB bit 5 |
| Pin 16 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 17 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive supply voltage |
| Pin 20 | RC0 — PORTC bit 0 |
| Pin 21 | RC1 — PORTC bit 1 |
| Pin 22 | RC2 — PORTC bit 2 |
| Pin 23 | RC3 — PORTC bit 3 |
| Pin 24 | RC4 — PORTC bit 4 |
| Pin 25 | RC5 — PORTC bit 5 |
| Pin 26 | RC6 — PORTC bit 6 |
| Pin 27 | RC7 — PORTC bit 7 |
| Pin 28 | VSS — Ground reference (second VSS pin on 28-pin PIC16C6x) |
Typical Applications
PIC16C62A-04/SP is suitable for 6 applications: Blood Pressure Monitor, Appliance Control (Washing Machine / Dishwasher User Interface), Automotive Body Controller (Legacy Comfort Modules), Security and Alarm Panel, Industrial Sensor Interface Module, Consumer Remote Control / IR Transmitter.
Blood Pressure Monitor
The PIC16C62A-04/SP suits blood pressure monitor designs because it pairs a deterministic 8-bit RISC core with very low power consumption and a small 28-pin DIP footprint. The MCU drives an inflatable cuff via an H-bridge driver, samples pressure from a sensor through an external op-amp, and sequences inflation/deflation timing using on-chip timers and the watchdog. With 3.5 KB of OTP program memory it can hold state-machine firmware for cuff control, oscillometric peak detection, and LCD driving, while the 22 I/O pins connect directly to the keypad, LCD, and pump relay. Typical 15 µA active current at 5 V extends battery life in portable home-health units. Per the Microchip PIC16C6x datasheet, the fully static core also supports clock-stopped sleep modes that further reduce consumption between measurements.
Recommended
Appliance Control (Washing Machine / Dishwasher User Interface)
In appliance user-interface modules the PIC16C62A-04/SP drives LED or 7-segment displays, scans keypads, and relays commands to a main controller over UART or a synchronous serial port. Its 128 bytes of RAM comfortably handle debounced key state, while the 35 single-word instructions and single-cycle execution keep code simple and fast. The 28-SPDIP through-hole package is friendly to wave-solder assembly and easy field rework on white-goods production lines. Commercial temperature range (0 to +70 C) suits indoor appliance enclosures. Per the Microchip PIC16C6x datasheet, the watchdog timer adds robustness against mains-borne brownouts common in motor-driven appliances.
Recommended
Automotive Body Controller (Legacy Comfort Modules)
For legacy 12 V automotive comfort modules such as mirror controllers, seat-position memory, and simple body computers the PIC16C62A-04/SP is a proven 8-bit workhorse. Its wide operating voltage range tolerates cranking transients up to ~6 V regulated rails, and the on-chip SSP supports LIN-style or synchronous communications to other body ECUs. The 22 I/O pins handle multiple switch inputs, relay drivers, and PWM channels for mirror or seat motors. While newer designs prefer PIC16F or dsPIC parts, the PIC16C62A remains in production and supported for long-life automotive aftermarket. For industrial-temperature deployments, choose the PIC16C62A-04I/SP variant per Microchip's PIC16C6x ordering information.
Recommended
Security and Alarm Panel
The PIC16C62A-04/SP is well-suited to wired security/alarm panels that supervise multiple zones, drive a piezo buzzer, and interface to a keypad and dialer. The 22 I/O pins handle zone loops, status LEDs, tamper switches, and a relay output for siren activation. Its low 15 µA typical active current at 5 V keeps standby power draw modest on a small sealed lead-acid or lithium backup battery. The watchdog timer and brown-out reset features protect the panel from being locked in an undefined state by EMI or supply sag. Per the Microchip PIC16C6x datasheet, the 14-bit instruction word supports efficient bit-manipulation routines for zone scanning and BCD display updates.
Recommended
Industrial Sensor Interface Module
In industrial 4-20 mA or 0-10 V sensor transmitters the PIC16C62A-04/SP can linearize sensor readings, perform averaging, and drive an isolated analog output via PWM plus an external op-amp filter. Its 8-bit core and 35-instruction ISA make firmware easy to certify and maintain on long-lifecycle industrial product lines. The 28-SPDIP through-hole package is convenient for hand-soldered prototype or low-volume industrial assemblies. For -40 to +85 C deployments, choose the PIC16C62A-04I/SP industrial-temperature variant per Microchip PIC16C6x datasheet. The wide supply voltage range up to 6.0 V also tolerates 5 V regulated rails with margin.
Recommended
Consumer Remote Control / IR Transmitter
Battery-powered IR remote controls benefit from the PIC16C62A-04/SP's very low active current (15 µA typical at 5 V / 4 MHz) and its fully static core that can be clocked at 32 kHz for low duty-cycle polling. The 22 I/O pins easily scan a 4x4 or 5x5 keypad matrix, drive a few status LEDs, and output a 38 kHz carrier via PWM for IR transmission. The OTP memory holds a one-time-programmed protocol stack, and the 14-bit instruction word simplifies encoding of RC5, NEC, or SIRC timing in a small code footprint. Per the Microchip PIC16C6x datasheet, the watchdog timer can wake the device from sleep on a key-press interrupt, further extending battery life.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62A-04/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62A-04I/SP | PIC16C62A-10/SP | PIC16C62A-20/SP | PIC16C62A-04E/SP | PIC16C62-04/SP |
|---|---|---|---|---|---|---|
| Package | 28-SPDIP | 28-SPDIP (same) | 28-SPDIP (same) | 28-SPDIP (same) | 28-SPDIP (same) | 28-SPDIP (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 10 MHz | 20 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 EPROM (pre-A silicon) |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| I/O Pins | 22 | 22 | 22 | 22 | 22 | 22 |
| Temperature Range | 0 to +70 C (Commercial) | -40 to +85 C (Industrial) | 0 to +70 C (Commercial) | 0 to +70 C (Commercial) | Extended (per datasheet) | 0 to +70 C (Commercial) |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | EPROM (pre-A) |
Key Differentiators
- Lowest-cost 4 MHz OTP sibling in the PIC16C62A 28-SPDIP family (vs PIC16C62A-04I/SP)
- Upward clock-speed migration path within same 28-SPDIP footprint (vs PIC16C62A-10/SP)
- Flash-based pin-compatible upgrade exists in PIC16F72 family (vs PIC16F72-I/SP)
Design Notes
The PIC16C62A-04/SP draws approximately 15 µA typical at 5 V / 4 MHz active and around 1 µA at 3 V / 32 kHz according to the Microchip PIC16C6x datasheet. Place a 0.1 µF ceramic decoupling capacitor as close as possible to the VDD pin (pin 20) and a bulk 10 µF tantalum or aluminum capacitor on the supply rail. For battery-powered designs, leverage the fully static core and watchdog-driven sleep modes to drop average current into the single-digit µA range. Always include a bulk reservoir if the device is driving relays or piezo loads that draw current in short bursts.
For a 4 MHz crystal connect a fundamental-mode XTAL between OSC1 (pin 8) and OSC2 (pin 9) with two load capacitors (typically 15-33 pF) to VSS, per the Microchip PIC16C6x datasheet oscillator guidelines. For low-power designs using the 32.768 kHz LP mode, increase the capacitor values to ~33-47 pF. If using an external CMOS clock, drive it into OSC1 and leave OSC2 floating. Verify oscillator start-up margin at the lowest expected supply voltage and temperature, especially in industrial (-40 C) designs that use the '04I' variant.
The PIC16C62A-04/SP uses OTP (One-Time-Programmable) EPROM, so firmware cannot be re-flashed once written - per the Microchip PIC16C6x datasheet, programming requires a device programmer such as the MPLAB PM3. Always validate firmware on a windowed ceramic package variant (e.g., PIC16C62A-04/JW) or on a Flash-based PIC16F sibling before committing to OTP volume. Also, remember that the '04' speed suffix limits the maximum oscillator to 4 MHz; migrating to PIC16F62A / PIC16F72 Flash parts requires re-targeting for the new memory map and (in the case of PIC16F72) added ADC peripheral.
Compliance Information
RoHS and REACH compliance status per Microchip product page and distributor listings (DigiKey/Mouser/Octopart) as of 2026-09-17. The /SP package uses lead-free matte-tin plating. AEC-Q100 not applicable for this commercial-grade part; for automotive deployments evaluate PIC16C62A-04I/SP or PIC16F72-I/SP industrial variants. Halogen-free status not explicitly stated in the verified data; refer to Microchip material declaration for confirmation.
