PIC16C62BT-20/SS - 8-Bit 20MHz OTP MCU 3.5KB | Microchip
MPN: PIC16C62BT-20/SS β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.5 | $7.50 |
| 10 | $6.85 | $68.50 |
| 100 | $6.1 | $610.00 |
| 500 | $5.4 | $2,700.00 |
| 1,000 | $4.85 | $4,850.00 |
PIC16C62BT-20/SS Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory, data RAM, and peripheral interfaces such as timers, serial ports, and I/O pins. The PIC16C62BT-20/SS belongs to the PICmicro mid-range family, positioned in the 8-bit MCU hierarchy as: PIC16C62B -> PIC16C family -> PICmicro mid-range -> 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor. Mid-range PIC MCUs use a 14-bit instruction set optimized for deterministic single-cycle execution, ideal for real-time control tasks where predictable interrupt response is essential.
Key features include 22 digital I/O pins multiplexed across peripheral functions, an integrated analog comparator, a capture/compare/PWM (CCP) module, a USART serial port, two 8-bit timers with one 16-bit timer, and a watchdog timer for code execution monitoring. The OTP memory allows a single programming cycle, making this part suitable for mature, low-cost production runs where firmware is finalized.
Technically, the device operates from a 3.0V to 5.5V supply, draws less than 2 mA at 5V/20 MHz, and includes power-on reset, brown-out detection, and an in-circuit serial programming (ICSP) interface. The Harvard architecture separates program and data buses, enabling simultaneous instruction fetch and data access for higher throughput compared to von Neumann designs.
Typical applications include appliance control, motor drive signal conditioning, automotive body electronics, industrial sensor interfaces, and legacy embedded system maintenance. The wide commercial temperature range (0C to +70C) supports indoor and protected-environment deployments.
Designers should note that OTP memory cannot be reprogrammed - choose Flash-based PIC16F equivalents for development or field-updatable firmware. The SSOP-28 package suits space-constrained boards but requires careful thermal management at sustained 20 MHz operation.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in alternatives within the PIC16C family, and practical design notes not aggregated in the manufacturer datasheet.
Drop-in alternatives for PIC16C62BT-20/SS β 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-20/SS (same form factor and footprint) β differing in Program Memory Size, Program Memory Type.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16C62B-20I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16C62B-20E/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16C62B-20/SS
β Drop-Inβ In Stock
$4.55 / Unit
View Datasheet βPIC16C622-20/SS
β Drop-Inβ In Stock
$1.38 / Unit
View Datasheet βPIC16F88-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16C62BT-20/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC RISC (mid-range, 14-bit instruction word) |
| Family | PIC16C |
| Maximum Clock Frequency | 20 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 bytes (128 x 8) |
| Number of I/O Pins | 22 |
| Supply Voltage | 3.0 V to 5.5 V |
| Package | 28-SSOP (209 mil) |
| Mounting Type | Surface Mount |
| Operating Temperature | 0 C to +70 C (Commercial) |
| Terminal Form | Gull Wing |
| Number of Terminals | 28 |
| Package Code | SSOP |
| AEC-Q100 | Not qualified (commercial grade) |
PIC16C62BT-20/SS Pin Configuration
| Pin 1 | MCLR β Master Clear (Reset) input, active low |
| Pin 2 | RA0/AN0 β Port A bit 0 / Analog input 0 |
| Pin 3 | RA1/AN1 β Port A bit 1 / Analog input 1 |
| Pin 4 | RA2/AN2/VREF- β Port A bit 2 / Analog input 2 / ADC reference negative |
| Pin 5 | RA3/AN3/VREF+ β Port A bit 3 / Analog input 3 / ADC reference positive |
| Pin 6 | RA4/T0CKI β Port A bit 4 / Timer0 clock input (open drain) |
| Pin 7 | RA5/SS/AN4 β Port A bit 5 / SPI slave select / Analog input 4 |
| Pin 8 | VSS β Ground reference |
| Pin 9 | OSC1/CLKIN β Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKOUT β Oscillator crystal output / clock output |
| Pin 11 | RC0/T1OSO/T1CKI β Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 12 | RC1/T1OSI/CCP2 β Port C bit 1 / Timer1 oscillator input / CCP2 output |
| Pin 13 | RC2/CCP1 β Port C bit 2 / Capture Compare PWM 1 output |
| Pin 14 | RC3/SCK/SCL β Port C bit 3 / SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA β Port C bit 4 / SPI data in / I2C data |
| Pin 16 | RC5/SDO β Port C bit 5 / SPI data out |
| Pin 17 | RC6/TX/CK β Port C bit 6 / USART asynchronous transmit / synchronous clock |
| Pin 18 | RC7/RX/DT β Port C bit 7 / USART asynchronous receive / synchronous data |
| Pin 19 | VSS β Ground reference |
| Pin 20 | VDD β Positive supply voltage (3.0 V to 5.5 V) |
| Pin 21 | RB0/INT β Port B bit 0 / External interrupt input |
| Pin 22 | RB1 β Port B bit 1 |
| Pin 23 | RB2 β Port B bit 2 |
| Pin 24 | RB3/PGM β Port B bit 3 / Low-voltage programming input |
| Pin 25 | RB4 β Port B bit 4 (interrupt-on-change) |
| Pin 26 | RB5 β Port B bit 5 (interrupt-on-change) |
| Pin 27 | RB6/PGC β Port B bit 6 / ICSP clock / interrupt-on-change |
| Pin 28 | RB7/PGD β Port B bit 7 / ICSP data / interrupt-on-change |
Typical Applications
PIC16C62BT-20/SS is suitable for 7 applications: Appliance Control (White Goods), Motor Drive Signal Conditioning, Industrial Sensor Interface Modules, Automotive Body Electronics (Legacy), Legacy Embedded System Maintenance, HVAC Control Panels, Point-of-Sale Peripherals.
Appliance Control (White Goods)
The PIC16C62BT-20/SS fits appliance control boards where a low-cost 8-bit MCU manages relays, triac-driven AC loads, and user keypad inputs. Its 22 I/O pins are sufficient for washing machine controllers (motor on/off, door lock, water valve, buzzer, display segments), and the 20 MHz clock provides ample throughput for state-machine firmware with deterministic timing. The OTP memory makes it well suited to high-volume production runs where firmware is finalized and unit cost dominates BOM. Pair it with the ULN2003A relay driver for 7-channel AC load control. Operating temperature of 0C to +70C covers indoor appliance enclosures.
Recommended
Motor Drive Signal Conditioning
The PIC16C62BT-20/SS serves as a signal-conditioning and supervisory controller in small DC motor drive boards, generating PWM signals via its CCP module for H-bridge gate drivers and reading Hall-effect sensors for closed-loop speed feedback. With a 20 MHz instruction cycle (200 ns per instruction), it can sample and respond to commutation events within microseconds, critical for BLDC and stepper motor control. The 128-byte RAM supports small PID lookup tables. Pair with DRV8871 H-bridge driver and back-EMF sensing front-end.
Recommended
Industrial Sensor Interface Modules
The PIC16C62BT-20/SS is used in industrial sensor interface modules that digitize analog signals and forward them over RS-232/RS-485 networks via the integrated USART. Its 8-bit ADC-free design (relies on external sigma-delta or SAR ADC) suits modular I/O designs where signal conditioning is handled externally. The 22 I/O pins drive status LEDs, address selectors, and digital isolators. The 3.0-5.5 V supply aligns with industrial 24V bus systems after step-down to 5 V via LM2596.
Recommended
Automotive Body Electronics (Legacy)
While not AEC-Q100 qualified, the PIC16C62BT-20/SS has been deployed in commercial-grade automotive body modules such as window lift controllers, seat position memories, and auxiliary lighting timers where automotive certification was grandfathered. Designers targeting new automotive designs should select AEC-Q100-qualified PIC16F variants instead. The 22 I/O pins interface with LIN bus transceivers and MOSFET drivers. Verify temperature grade suitability before deployment.
Recommended
Legacy Embedded System Maintenance
The PIC16C62BT-20/SS is a target for legacy embedded system maintenance, where decades-old industrial controllers, scientific instruments, and HVAC units require spare parts for repair. The NRND status means new production runs are still supported for service continuity, but the OTP memory prevents firmware updates - replacement boards must use identical programmed parts. Stockpile recommendations: maintain 6-12 months of inventory for critical legacy systems.
Recommended
HVAC Control Panels
The PIC16C62BT-20/SS operates in commercial HVAC control panels that drive 7-segment displays, scan keypads, and control fan/blower speeds via triac phase-angle control. Its 20 MHz instruction rate easily handles display multiplexing (8-digit refresh) and zero-cross detection for triac firing, while the 128-byte RAM stores schedule tables and setpoint histories. The OTP memory prevents field tampering of factory-calibrated control algorithms. Pair with MOC3041 zero-cross triac drivers and DS1307 RTC for time-of-day scheduling.
Recommended
Point-of-Sale Peripherals
The PIC16C62BT-20/SS serves in point-of-sale peripherals such as barcode scanner interfaces, receipt printer controllers, and customer display drivers, where its USART handles barcode wand input and the CCP module generates precise stepper motor pulses for paper feed. The 22 I/O pins connect to multiple peripherals (keypad, buzzer, LEDs, RS-232). Cost-effective OTP memory suits high-volume POS deployments where the unit price is sensitive.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62BT-20/SS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62B-20I/SS | PIC16C62B-20E/SS | PIC16F88-I/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Program Memory Type | OTP 3.5 KB | OTP 3.5 KB | OTP 3.5 KB | Flash 4 KB (reprogrammable) |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 368 bytes |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 22 | 22 | 22 | 16 (multiplexed with ADC) |
| Operating Temperature | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) |
| Lifecycle Status | NRND | NRND | NRND | Active |
Key Differentiators
- Identical die in commercial temperature grade with tape-and-reel packaging (vs PIC16C62B-20/SS)
- Industrial temperature grade for harsh environments (vs PIC16C62B-20I/SS)
- Flash-based modern equivalent with active lifecycle (vs PIC16F88-I/SS)
Design Notes
Place a 10 uF tantalum or aluminum bulk capacitor and a 0.1 uF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 20) to suppress switching noise. Add a second 0.1 uF ceramic near pin 19 (VSS) to provide a low-impedance return path. The PIC16C62BT-20/SS draws less than 2 mA typical at 5 V/20 MHz but peaks during CCP/PWM transitions can reach 30 mA - bulk decoupling prevents VDD sag that triggers brown-out reset.
The PIC16C62B uses OTP (One-Time Programmable) memory - once programmed, it cannot be erased or rewritten. Production programming must be verified on the first attempt; any firmware bug becomes a bricked part. For prototypes or field-updatable designs, choose the Flash-based PIC16F88-I/SS in the same SSOP-28 footprint. Also note that the CONFIG bits (oscillator selection, watchdog, brown-out) are part of the OTP image and must be set correctly during programming.
The 28-SSOP package has a 0.65 mm pin pitch - design the PCB land pattern per IPC-7351 (SSOP-28 standard) and ensure solder mask slivers are at least 0.2 mm wide to prevent bridging. Route the oscillator traces (OSC1/OSC2) as short as possible (under 10 mm) and guard them with a ground pour to minimize EMI. Keep the MCLR trace short and route the MCLR pull-up (typically 10 kOhm to VDD) directly to the ICSP connector for in-circuit programming access.
Compliance Information
PIC16C62BT-20/SS is commercial temperature grade, not AEC-Q100 qualified. Compliance fields are marked unknown because the verified web data and internal database do not contain explicit RoHS/REACH/lead-free declarations - request confirmation from Microchip or authorized distributor before procurement.
