PIC16C62BT-20I/SO - 8-Bit 20MHz 3.5KB OTP MCU | Microchip
MPN: PIC16C62BT-20I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.05 | $3.05 |
| 10 | $2.81 | $28.10 |
| 100 | $2.46 | $246.00 |
| 500 | $2.18 | $1,090.00 |
| 1,000 | $1.92 | $1,920.00 |
PIC16C62BT-20I/SO Overview
A PIC16C-series microcontroller (PICmicro) is an 8-bit Harvard-architecture RISC MCU based on the original Peripheral Interface Controller concept. Within the broader taxonomy it sits as: PIC16C -> OTP mid-range MCU -> 8-bit microcontroller -> embedded microcontroller -> semiconductor IC. The PIC16C6x family is part of Microchip's mid-range PICmicro lineup, which uses a 14-bit instruction word, 35 single-word instructions (all single-cycle except program branches, which take two cycles), and a separated program/data bus that allows instruction fetch and data access to occur in the same clock cycle. This combination of OTP memory, simple instruction set, and integrated peripherals made the PIC16C6x family a workhorse for industrial control, automotive body electronics, and consumer appliances in the 1990s and 2000s.
Key features of the PIC16C62BT-20I/SO include a 20MHz maximum clock rate, 3.5KB of OTP EPROM program memory organized as 2K x 14, 128 bytes of data RAM, three timers (Timer0, Timer1, Timer2), a 10-bit or 8-bit ADC on related family members, a synchronous serial port (SSP) configurable for SPI master/slave or I2C master/slave, and a watchdog timer with on-chip RC oscillator for reliable system recovery. The device supports in-circuit serial programming (ICSP) through the RB6/RB7 pins, allowing firmware to be loaded after PCB assembly.
From an architectural standpoint, the PIC16C62B uses a RISC core with a two-stage pipeline and a 14-bit-wide program memory bus, enabling single-cycle instruction execution for most opcodes. The internal oscillator option, combined with the wide 4V-5.5V supply range, makes the part tolerant of noisy industrial power rails. Compared to its PIC16C62 predecessor, the "B" revision typically adds brown-out detect and other robustness refinements; the "T" in this part number denotes tape-and-reel packaging and the "I" denotes industrial temperature range.
Typical applications for the PIC16C62BT-20I/SO include industrial sensor interfaces, motor-control front-ends, white-goods control boards, security-panel keypads, low-cost SPI/I2C I/O expanders, and battery-powered metering nodes where the 4V-5.5V supply range and 20MHz throughput are adequate. Designers should note that the OTP variant cannot be re-programmed in the field; for development and rework a windowed ceramic DIP (JW) variant or a Flash-based PIC16F equivalent is preferred.
Drop-in alternatives for PIC16C62BT-20I/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-20I/SO (same form factor and footprint) — differing in Package, RoHS Status, Operating Temperature Range, Program Memory Size, Program Memory Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C62B-20I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C62AT-20I/SO
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC16C622T-20I/SO
✅ Drop-In✓ In Stock
$2.99 / Unit
View Datasheet →PIC16C621T-20E/SO
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →PIC16C620T-04/SO
✅ Drop-In✓ In Stock
$2.78 / Unit
View Datasheet →PIC16C62BT-20I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC |
| Series | PIC16C6x (PIC16C62B) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| Data RAM | 128 bytes |
| Maximum Clock Speed | 20 MHz |
| Supply Voltage (Vdd) | 4 V to 5.5 V |
| Number of I/O Pins | 22 |
| Communication Interfaces | I2C, SPI (via MSSP/SSP) |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Package | 28-pin SOIC (wide body, SO) |
| Mounting Type | Surface Mount |
| Packaging Form | Tape & Reel |
| Lifecycle Stage | Active |
PIC16C62BT-20I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0 — Port A bit 0 (digital I/O) |
| Pin 3 | RA1 — Port A bit 1 |
| Pin 4 | RA2 — Port A bit 2 |
| Pin 5 | RA3 — Port A bit 3 |
| Pin 6 | RA4 — Port A bit 4 / T0CKI (Timer0 clock input) |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1 — Oscillator input (crystal/RC) |
| Pin 9 | OSC2 — Oscillator output (crystal); CLKOUT in RC mode |
| Pin 10 | RC0 — Port C bit 0 |
| Pin 11 | RC1 — Port C bit 1 |
| Pin 12 | RC2 — Port C bit 2 |
| Pin 13 | RC3 — Port C bit 3 / SCL (I2C clock) |
| Pin 14 | RC4 — Port C bit 4 / SDA (I2C data) |
| Pin 15 | RC5 — Port C bit 5 / SDO (SPI data out) |
| Pin 16 | RC6 — Port C bit 6 / TX (USART async transmit) |
| Pin 17 | RC7 — Port C bit 7 / RX (USART async receive) |
| Pin 18 | VDD — Positive supply (4V-5.5V) |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RB0/INT — Port B bit 0 / external interrupt |
| Pin 21 | RB1 — Port B bit 1 |
| Pin 22 | RB2 — Port B bit 2 |
| Pin 23 | RB3 — Port B bit 3 |
| Pin 24 | RB4 — Port B bit 4 |
| Pin 25 | RB5 — Port B bit 5 |
| Pin 26 | RB6 — Port B bit 6 / ICSPCLK (in-circuit serial programming clock) |
| Pin 27 | RB7 — Port B bit 7 / ICSPDAT (in-circuit serial programming data) |
| Pin 28 | VDD — Positive supply (4V-5.5V) |
Typical Applications
PIC16C62BT-20I/SO is suitable for 6 applications: Industrial Sensor Interface, White Goods / Appliance Control, Security Panel Keypad Controller, I2C/SPI I/O Expander Host, Battery-Powered Metering Node, Low-Cost Motor Control Front-End.
Industrial Sensor Interface
The PIC16C62BT-20I/SO fits industrial sensor interface boards where a robust 8-bit MCU aggregates analog/digital inputs and reports over I2C or SPI to a host controller. Its 4V-5.5V supply range tolerates noisy 5V industrial rails, the industrial -40C to +85C temperature rating suits factory-floor enclosures, and the MSSP peripheral provides hardware I2C/SPI at up to 5Mbps SPI clock. The 22 I/O pins are sufficient for typical sensor-multiplexer front-ends.
Recommended
White Goods / Appliance Control
In white-goods control boards (washing machines, dishwashers, ovens), the PIC16C62BT-20I/SO delivers the right balance of cost, peripherals, and reliability. Its 3.5KB OTP program memory accommodates typical user-interface and motor-control state machines, the 20MHz throughput drives TRIAC-based load control loops, and the integrated watchdog timer with on-chip RC oscillator provides autonomous system recovery. The 28-SOIC wide-body package is well-suited to conformal-coated appliance PCBs.
Recommended
Security Panel Keypad Controller
The PIC16C62BT-20I/SO is a common choice for security-system keypads where a scanned matrix, piezo buzzer drive, and serial uplink to a master panel must coexist on a single MCU. The 22 I/O pins comfortably drive a 4x4 keypad scan matrix plus LEDs, the MSSP provides SPI for the panel link, and the 20MHz clock debounces key presses with minimal latency. Industrial temperature rating matches outdoor-rated security installations.
Recommended
I2C/SPI I/O Expander Host
When a small main processor needs additional I/O, the PIC16C62BT-20I/SO acts as an intelligent I2C or SPI slave that aggregates multiple digital signals. The MSSP module handles both protocols in hardware, freeing the firmware from bit-banging. The 128 bytes of RAM buffer incoming/outgoing packets, and the 20MHz clock sustains 400kHz I2C Fast-mode operation without CPU bottlenecks.
Recommended
Battery-Powered Metering Node
In metering and remote-monitoring nodes powered from a regulated 5V rail, the PIC16C62BT-20I/SO runs the periodic measurement, calibration, and store-and-forward telemetry loop. The 4V-5.5V supply matches common 5V linear regulator outputs, the watchdog timer protects against code lockups in unattended deployments, and the MSSP drives external EEPROM/RTC chips for non-volatile logging. Low sleep-current modes are not part of this OTP mid-range family, so it is best suited to always-on nodes.
Recommended
Low-Cost Motor Control Front-End
The PIC16C62BT-20I/SO handles stepper or brushed DC motor commutation sequences, current-sense ADC sampling (using an external ADC or comparator chain), and serial feedback to a supervisory controller. The 20MHz instruction rate sustains 4-axis trapezoidal profiles, the 22 I/O pins cover direction/enable/step signals plus encoder inputs, and the industrial temperature range tolerates under-hood or motor-housing heat.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62BT-20I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62B-20I/SO | PIC16C62AT-20I/SO | PIC16C622T-20I/SO | PIC16C621T-20E/SO | PIC16C620T-04/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 1.75 KB OTP | 1 KB OTP |
| Maximum Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz |
| Supply Voltage | 4 V to 5.5 V | 4 V to 5.5 V | 4 V to 5.5 V | 4 V to 5.5 V | 4 V to 5.5 V | 4 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (I) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (E) | 0 C to +70 C |
| I/O Pins | 22 | 22 | 22 | 22 | 13 | 13 |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
Key Differentiators
- Tape-and-reel packaging for SMT production (vs PIC16C62B-20I/SO)
- Sister part with reduced I/O and memory for cost-sensitive designs (vs PIC16C621T-20E/SO)
- Lower-cost 4MHz speed grade for slow applications (vs PIC16C620T-04/SO)
Design Notes
The PIC16C62BT-20I/SO operates from a regulated 4V to 5.5V rail. Add a 100nF decoupling capacitor as close as possible to the VDD pin (pin 28 on 28-SOIC) and a bulk 10uF tantalum or ceramic on the board's main 5V rail. For noisy industrial environments, place a ferrite bead in series with VDD to attenuate switching-converter ripple.
Because the program memory is OTP EPROM, the PIC16C62BT-20I/SO cannot be re-programmed once blown. During prototyping always build on a PIC16C62B JW (windowed ceramic DIP) or a PIC16F62x Flash variant, then commit the final firmware to the OTP part for production. Forgetting this step is the most common reason OTP parts end up scrapped during board bring-up.
Route the MCLR (pin 1) trace directly to a pull-up resistor and the reset source; do not share this trace with high-current switching signals. Place the crystal or resonator (if used) within 5mm of pins 8-9 and guard the area with a ground pour to minimize EMI coupling into the oscillator. The ICSP pins RB6/RB7 (pins 26-27) need 4.7k pull-ups to VDD for reliable in-circuit programming.
Compliance Information
RoHS and lead-free confirmed per Microchip product page; halogen-free status not explicitly stated in the verified web data and should be confirmed with the manufacturer for halogen-sensitive applications.
