PIC16C62BT-04I/SO - 4MHz 8-Bit OTP MCU, 3.5KB | Microchip
MPN: PIC16C62BT-04I/SO ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.95 | $7.95 |
| 10 | $7.45 | $74.50 |
| 100 | $6.5 | $650.00 |
| 500 | $5.8 | $2,900.00 |
| 1,000 | $5.1 | $5,100.00 |
PIC16C62BT-04I/SO Overview
A PIC16C-series microcontroller is part of the mid-range 8-bit RISC family originally launched by Microchip in the 1990s. These devices use a Harvard architecture with separate program and data buses and execute most instructions in a single instruction cycle, enabling high throughput from modest clock rates. The 'C' suffix indicates EPROM/OTP program memory, distinguishing this family from later Flash-based PIC16F variants. Within the broader semiconductor taxonomy, the PIC16C62B belongs to the 8-bit microcontroller -> microcontroller IC -> integrated circuit hierarchy.
Key features include a 35-instruction RISC instruction set (all single-cycle except program branches which take two cycles), an internal oscillator support option in related variants, and industrial-grade (-40C to +85C) operating temperature range denoted by the 'I' suffix. The '04' speed grade specifies the 4 MHz maximum oscillator input. The 28-pin SOIC package provides a compact surface-mount footprint with 0.295" (7.50 mm) body width, suitable for volume production.
The architecture combines a high-performance RISC CPU with on-chip peripherals tailored for embedded control. The Harvard bus structure separates the 14-bit program memory from the 8-bit data memory, allowing simultaneous instruction fetch and operand access. Brown-out Reset, Power-on Reset, and Watchdog Timer provide robust operation in electrically noisy environments.
Typical applications include industrial control systems, automotive body electronics (non-safety), consumer appliance control, sensor signal conditioning front-ends, and legacy equipment maintenance. The OTP program memory makes the PIC16C62BT-04I/SO well suited for mature high-volume products where firmware is final and Flash reprogrammability is unnecessary.
When designing with this part, note that OTP memory cannot be re-programmed in-circuit - firmware must be fully validated before commitment. The 'I' temperature grade supports industrial environments but is not AEC-Q100 qualified; for automotive applications consider the PIC16F equivalent family. Pin-compatible OTP variants in the PIC16C62B series allow frequency (04/20) and temperature (I/E) flexibility.
This page synthesizes distributor pricing, drop-in alternatives, and engineering comparison data not found in the manufacturer datasheet alone, providing actionable design context for sourcing and replacement decisions.
Drop-in alternatives for PIC16C62BT-04I/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 PIC16C62BT-04I/SO (same form factor and footprint) — differing in Package, Program Memory Type, Operating Temperature Range, RAM Size, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C62B-04I/SO
✅ Drop-In✓ In Stock
$5.02 / Unit
View Datasheet →PIC16C62B-04E/SO
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC16C62B-20I/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F628A-I/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16C62AT-20I/SO
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC16C622A-04I/SO
✅ Drop-In✓ In Stock
$2.72 / Unit
View Datasheet →PIC16C62BT-04I/SO Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-Bit |
| Maximum Clock Speed | 4 MHz |
| Program Memory Size | 3.5 KB (2K x 14) |
| Program Memory Type | OTP (One-Time Programmable) |
| RAM Size | 128 x 8 bytes |
| EEPROM Size | None |
| Number of I/O Pins | 22 |
| Supply Voltage Range | 4 V to 5.5 V |
| Operating Temperature Range | -40 C to +85 C (Industrial, 'I' grade) |
| Connectivity | I2C, SPI |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Oscillator Type | External |
| Package / Case | 28-SOIC (0.295", 7.50 mm width) |
| Mounting Type | Surface Mount |
| Speed Grade | 04 (4 MHz) |
| RoHS Status | Non-compliant (contains lead) |
| Instruction Set | 35 single-word instructions (RISC) |
PIC16C62BT-04I/SO Pin Configuration
| Pin 1 | MCLR/VPP — Master Clear (Reset) input / programming voltage |
| Pin 2 | RA0/AN0 — GPIO Port A bit 0 / analog input |
| Pin 3 | RA1/AN1 — GPIO Port A bit 1 / analog input |
| Pin 4 | RA2/AN2 — GPIO Port A bit 2 / analog input |
| Pin 5 | RA3/AN3/VREF — GPIO Port A bit 3 / analog input / VREF |
| Pin 6 | RA4/T0CKI — GPIO Port A bit 4 / Timer 0 clock input |
| Pin 7 | RA5/SS/AN4 — GPIO Port A bit 5 / SPI slave select / analog input |
| Pin 8 | RE0/RD/AN5 — GPIO Port E bit 0 / parallel port read / analog input |
| Pin 9 | RE1/WR/AN6 — GPIO Port E bit 1 / parallel port write / analog input |
| Pin 10 | RE2/CS/AN7 — GPIO Port E bit 2 / parallel port chip select / analog input |
| Pin 11 | VDD — Positive supply voltage (5V) |
| 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/T1OSO/T1CKI — GPIO Port C bit 0 / Timer 1 oscillator out / clock in |
| Pin 16 | RC1/T1OSI/CCP2 — GPIO Port C bit 1 / Timer 1 oscillator in / CCP2 |
| Pin 17 | RC2/CCP1 — GPIO Port C bit 2 / Capture Compare PWM 1 |
| Pin 18 | RC3/SCK/SCL — GPIO Port C bit 3 / SPI clock / I2C clock |
| Pin 19 | RC4/SDI/SDA — GPIO Port C bit 4 / SPI data in / I2C data |
| Pin 20 | RC5/SDO — GPIO Port C bit 5 / SPI data out |
| Pin 21 | RC6/TX/CK — GPIO Port C bit 6 / USART TX / clock |
| Pin 22 | RC7/RX/DT — GPIO Port C bit 7 / USART RX / data |
| Pin 23 | RB0/INT — GPIO Port B bit 0 / external interrupt |
| Pin 24 | RB1 — GPIO Port B bit 1 |
| Pin 25 | RB2 — GPIO Port B bit 2 |
| Pin 26 | RB3/PGM — GPIO Port B bit 3 / LVP programming |
| Pin 27 | RB4 — GPIO Port B bit 4 |
| Pin 28 | RB5 — GPIO Port B bit 5 |
Typical Applications
PIC16C62BT-04I/SO is suitable for 7 applications: Industrial Sensor Interface Module, Consumer Appliance Control Board, Legacy Automotive Body Electronics (Non-Safety), HVAC Damper and Valve Actuator, POS Terminal Peripheral Controller, Smart Energy Meter Sub-Controller, Educational MCU Trainer Board.
Industrial Sensor Interface Module
The PIC16C62BT-04I/SO fits industrial sensor interface modules because its 22 I/O pins easily handle multiple digital sensor inputs, its PWM module drives proportional valves or LED indicators, and its 4V to 5.5V supply matches the 5V industrial rail. Industrial-grade -40C to +85C operation covers factory floor temperature ranges. The I2C bus enables multi-sensor polling, and the integrated WDT plus Brown-out Reset provide the supervisory coverage that unattended industrial installations demand.
Recommended
Consumer Appliance Control Board
Consumer appliance control boards benefit from the PIC16C62BT-04I/SO's compact 28-SOIC footprint, integrated PWM for motor or heater control, and on-chip timers that eliminate external timing components. The OTP memory suits high-volume appliance products where firmware is finalized at production. Brown-out Reset and Power-on Reset ensure clean startup across mains-brownout events common in residential electrical environments, while the 35-instruction RISC core keeps firmware development straightforward for small engineering teams.
Recommended
Legacy Automotive Body Electronics (Non-Safety)
For non-safety automotive body electronics such as interior lighting controllers, mirror adjusters, or seat-position memory modules, the PIC16C62BT-04I/SO provides sufficient processing for simple state machines and PWM-driven actuators. The industrial -40C to +85C grade tolerates cabin temperatures. The OTP memory and 5V supply align with traditional 12V-clamped automotive electrical architectures. Note that this part is NOT AEC-Q100 qualified; for safety-critical or under-hood applications use a qualified PIC16F AEC-Q100 variant.
Recommended
HVAC Damper and Valve Actuator
HVAC damper and valve actuator controllers pair naturally with the PIC16C62BT-04I/SO because the integrated PWM channels drive proportional actuators directly, the I2C bus communicates with building-management thermostats, and the industrial temperature grade handles mechanical-room environments. The OTP memory suits mature designs where controller firmware does not require field updates. Brown-out Detect and WDT provide the supervisory fault recovery needed for unattended building systems.
Recommended
POS Terminal Peripheral Controller
The PIC16C62BT-04I/SO is a fit for point-of-sale terminal peripheral controllers handling barcode scanners, customer displays, or cash-drawer solenoids. The SPI port drives display modules, the I2C bus interfaces with EEProms for transaction logging, and PWM controls audible beep generators. The OTP memory model suits sealed peripheral devices where firmware is locked at production and the compact 28-SOIC footprint saves PCB space inside crowded terminal chassis.
Recommended
Smart Energy Meter Sub-Controller
Smart energy meter sub-controllers use the PIC16C62BT-04I/SO as a low-power auxiliary MCU driving LCD multiplex, tamper-detection inputs, and relay control outputs. The 4 MHz clock suffices for these peripheral-management tasks, the OTP memory prevents firmware tampering, and the integrated WDT plus Brown-out Reset meet utility-meter reliability requirements. Industrial temperature grade supports outdoor meter enclosures.
Recommended
Educational MCU Trainer Board
Educational microcontroller trainer boards benefit from the PIC16C62BT-04I/SO's well-documented 35-instruction RISC architecture, abundant sample code in Microchip application notes, and the breadboard-friendly 28-SOIC breakout footprint. Students learn timer, PWM, and serial peripheral programming against a known die. OTP memory introduces students to one-time-programmable device constraints encountered in commercial embedded design. The 4 MHz clock rate simplifies timing calculations during lab exercises.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62BT-04I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62B-04I/SO | PIC16C62B-04E/SO | PIC16C62B-20I/SO | PIC16F628A-I/SO | PIC16C62AT-20I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 20 MHz |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB Flash | 3.5 KB OTP |
| RAM Size | 128 B | 128 B | 128 B | 128 B | 224 B | 128 B |
| I/O Pins | 22 | 22 | 22 | 22 | 16 | 22 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| Program Memory Type | OTP (one-time) | OTP | OTP | OTP | Flash (reprogrammable) | OTP |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Active | Obsolete |
Key Differentiators
- Industrial -40C to +85C grade at 4 MHz speed grade (vs PIC16C62B-04E/SO)
- Active lifecycle versus OTP obsolescence (vs PIC16F628A-I/SO)
- Tape and Reel packaging variant of identical die (vs PIC16C62B-04I/SO)
Design Notes
OTP memory cannot be re-programmed: ensure firmware is fully validated on a PIC16F equivalent windowed or Flash part before committing code to the production programmer. A single bad bit locks the device. Use Microchip's PRO MATE II or equivalent OTP programmer and verify checksum post-programming on every unit. For development cycles, prototype on a PIC16F628A or PIC16F88 with the same pinout and migrate the final image to PIC16C62BT-04I/SO for production.
The PIC16C62BT-04I/SO supply range is 4V to 5.5V - operation at 3.3V is not guaranteed and Brown-out Reset may trigger prematurely. For 3.3V systems use a PIC16LF or PIC16F variant with wide-range supply. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 20), plus a bulk 10 uF tantalum at the board supply entry. The MCLR pin (pin 1) requires a 10 kohm pull-up to VDD for normal operation; a 100 nF cap on MCLR provides noise immunity for the reset circuitry.
The 28-SOIC package has a 0.295 inch (7.50 mm) body width with 0.05 inch (1.27 mm) pin pitch. For hand-soldering, use a fine-tip iron and 0.4 mm lead-free solder; for production use a reflow profile per IPC/JEDEC J-STD-020 with peak temperature below 220C for lead-bearing terminations. Route the 4 MHz oscillator traces (OSC1/OSC2) away from high-current switching nodes and keep them short to minimize EMI susceptibility and clock jitter.
Estimated: at maximum 5V supply and 4 MHz clock with all I/O toggling at 50% duty cycle, the PIC16C62BT-04I/SO consumes approximately 10 to 15 mA, dissipating roughly 50 to 75 mW. The 28-SOIC package theta_JA is approximately 80 C/W, yielding a junction temperature rise of 4 to 6 C above ambient - well within the 85 C industrial limit. No heatsink is required under normal operating conditions.
Compliance Information
PIC16C62BT-04I/SO is non-RoHS due to lead-bearing terminations. AEC-Q100 not qualified - choose PIC16F AEC-Q100 variants for automotive. Lead-free and halogen-free status unknown for this obsolete OTP part.