PIC16C62BT-04/SS - 8-Bit 4MHz OTP MCU 3.5KB Flash | Microchip
MPN: PIC16C62BT-04/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $4.1 | $4,100.00 |
PIC16C62BT-04/SS Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and peripherals on one die; OTP (One-Time Programmable) variants allow the user to program the device once with custom firmware using a programmer, after which the program memory is permanent. The PIC16C62B belongs to the mid-range PIC16C family, which uses a Harvard-architecture RISC CPU with 35 single-word instructions to provide deterministic single-cycle execution (except program branches, which take two cycles). This places the part in the broader microcontroller hierarchy: 8-bit MCU -> mid-range MCU -> microcontroller -> embedded controller -> semiconductor.
Key features of the PIC16C62BT-04/SS include integrated I2C/SPI peripherals, a power-on reset (POR) and brown-out reset (BOR) circuit, a Watchdog Timer (WDT) with on-chip RC oscillator, and ultra-low standby current of 1 uA typical at 3V / 32 kHz. The 4 MHz designator refers to the maximum oscillator frequency; the device operates from DC to 4 MHz across the full 2.5V-6.0V VDD range. Program memory is organized as 2K x 14 words (each instruction word is 14 bits wide in the mid-range PIC core).
Typical applications for the PIC16C62BT-04/SS include low-power embedded control nodes, sensor signal conditioning front-ends, simple motor and relay drivers, battery-powered consumer devices, and industrial control subsystems where the OTP memory model is acceptable for high-volume production. The 22 I/O pins can directly drive LED indicators, keypads, and small solenoids; the on-chip MSSP peripheral handles I2C and SPI communication with sensors and EEPROMs.
When designing with the PIC16C62BT-04/SS, place a 0.1 uF decoupling capacitor as close as possible to the VDD pin and follow the in-circuit serial programming (ICSP) pinout if firmware updates during production are required. Because the /T suffix indicates tape-and-reel packaging and the /SS designator indicates the SSOP-28 footprint, designers should confirm the production environment supports surface-mount SSOP assembly. Note that this OTP variant cannot be reprogrammed in-circuit, so production firmware should be fully validated before programming.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone - cross-referenced against verified distributor listings as of 2026-09-17.
Drop-in alternatives for PIC16C62BT-04/SS — 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-04/SS (same form factor and footprint) — differing in Program Memory Size, RoHS Status, MSL Level, Operating Temperature Range, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C62B-04/SS
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →PIC16C62B-04I/SS
✅ Drop-In✓ In Stock
$5.4 / Unit
View Datasheet →PIC16C62B-04E/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16C62B-04/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$4.65 / Unit
View Datasheet →PIC16C622-04/SS
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16C62BT-04/SS Maximum Ratings & Electrical Characteristics
| Core | PIC16C mid-range RISC, 35 single-word instructions |
| Data Bus Width | 8 bit |
| Maximum Clock Frequency | 4 MHz |
| Program Memory Size | 3.5 KB (2K x 14) OTP |
| RAM Size | 128 bytes |
| Number of I/O Pins | 22 |
| Supply Voltage Range | 2.5 V to 6.0 V |
| Operating Temperature Range | -40 C to +125 C (extended grade, per datasheet) |
| Package | 28-SSOP (5.30 mm / 0.209 in body width) |
| Mounting Type | Surface Mount |
| Peripherals | I2C, SPI (MSSP), WDT, POR, BOR |
| Instruction Cycle Time | 1 us at 4 MHz |
| Typical Active Current | 15 uA typical at 5 V / 4 MHz |
| Typical Standby Current | 1 uA typical at 3 V / 32 kHz |
| RoHS Status | Compliant (lead-free /SS package) |
PIC16C62BT-04/SS Pin Configuration
| Pin 1 | RA2 — Port A bit 2 (digital I/O) |
| Pin 2 | RA3 — Port A bit 3 (digital I/O) |
| Pin 3 | RA4 — Port A bit 4 (digital I/O / T0CKI) |
| Pin 4 | RA5 — Port A bit 5 (digital I/O / SS) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0 — Port B bit 0 (digital I/O / INT) |
| Pin 7 | RB1 — Port B bit 1 (digital I/O) |
| Pin 8 | RB2 — Port B bit 2 (digital I/O) |
| Pin 9 | RB3 — Port B bit 3 (digital I/O) |
| Pin 10 | RB4 — Port B bit 4 (digital I/O) |
| Pin 11 | RB5 — Port B bit 5 (digital I/O) |
| Pin 12 | RB6 — Port B bit 6 (digital I/O / PGC) |
| Pin 13 | RB7 — Port B bit 7 (digital I/O / PGD) |
| Pin 14 | VSS — Ground reference (second) |
| Pin 15 | VDD — Positive supply voltage |
| Pin 16 | RC0 — Port C bit 0 (digital I/O) |
| Pin 17 | RC1 — Port C bit 1 (digital I/O) |
| Pin 18 | RC2 — Port C bit 2 (digital I/O / CCP1) |
| Pin 19 | RC3 — Port C bit 3 (digital I/O / SCL) |
| Pin 20 | RC4 — Port C bit 4 (digital I/O / SDA) |
| Pin 21 | RC5 — Port C bit 5 (digital I/O / SDO) |
| Pin 22 | RC6 — Port C bit 6 (digital I/O / TX) |
| Pin 23 | RC7 — Port C bit 7 (digital I/O / RX) |
| Pin 24 | OSC1 — Crystal oscillator input |
| Pin 25 | OSC2 — Crystal oscillator output |
| Pin 26 | VSS — Ground reference (third) |
| Pin 27 | VDD — Positive supply voltage (second) |
| Pin 28 | MCLR — Master clear (reset, active low) |
Typical Applications
PIC16C62BT-04/SS is suitable for 6 applications: Low-Power Sensor Node Controller, Automotive Aftermarket Indicator Controller, Industrial Control Subsystem, Consumer Appliance Control Board, Hobby and Educational Development Platform, Battery-Powered Remote Control Unit.
Low-Power Sensor Node Controller
The PIC16C62BT-04/SS is well suited to battery-powered wireless sensor nodes where its 1 uA typical standby current at 3V/32 kHz allows years of operation from a single coin cell. The 22 I/O lines can drive a thermistor bridge, a low-power SPI temperature/humidity sensor (SHT21-class), and a sleep-mode interrupt output to the radio's wake pin. Integrated I2C/SPI peripherals (MSSP) eliminate the need for an external transceiver IC, while the 3.5 KB OTP program memory holds the wake-cycle sampling and radio-sleep state machine. Power dissipation is dominated by the downstream radio; the MCU itself dissipates roughly 15 uA active at 5V/4 MHz, so a 220 mAh CR2032 battery yields roughly 3+ years of hourly-sampled operation. Designers should use the on-chip Watchdog Timer (WDT) to recover from sensor-bus lockups and configure BOR for brown-out resilience in noisy industrial environments.
Recommended
Automotive Aftermarket Indicator Controller
For non-safety automotive aftermarket applications such as LED indicator drivers, gear-position displays, or auxiliary lighting controllers, the PIC16C62BT-04/SS offers 22 high-current I/O capable of directly sinking 25 mA per pin to drive LED arrays without external transistors. Its extended temperature grade (-40C to +125C) covers the under-hood and cabin automotive envelope. The 4 MHz mid-range core executes PWM generation cycles in single instruction cycles, enabling software-defined dimming at kHz rates with no jitter. Note that for safety-critical automotive applications (airbag, steering, brake-by-wire), the PIC16C62B family is NOT AEC-Q100 qualified - designers must migrate to PIC16F1xxx Q1-grade parts. For non-safety accessories the OTP memory model is ideal because production firmware is locked at programming time, eliminating field reprogramming risks.
Recommended
Industrial Control Subsystem
In industrial control subsystems such as relay drivers, contactor sequencers, and PLC expansion I/O modules, the PIC16C62BT-04/SS provides deterministic single-cycle instruction execution (except branches, which take two cycles) that simplifies IEC 61131-style ladder-logic emulation. The 22 I/O pins map directly to opto-isolated 24V field-side inputs and relay-driver outputs, while the integrated I2C/SPI MSSP peripheral communicates with ADC chips, EEPROM data logs, and HMI displays. The 128-byte RAM is sufficient for state-machine control loops with 8-16 boolean tags. Designers should add external TVS diodes on field-side I/O and use the BOR circuit to ride out industrial supply transients; OTP memory is ideal because production firmware rarely changes after deployment, eliminating field-update attack surfaces.
Recommended
Consumer Appliance Control Board
For high-volume consumer appliances such as coffee makers, microwave keypads, washing-machine control boards, and rice cookers, the PIC16C62BT-04/SS strikes a balance between capability and per-IC cost. The 22 I/O lines drive a 4x4 matrix keypad, multiplex 7-segment LED displays, and read NTC thermistors via the on-chip comparator (with external resistor divider). The 3.5 KB OTP program memory accommodates state machines for cooking profiles or wash cycles without the overhead of flash memory, lowering unit cost by roughly 10-15% over flash equivalents. The 4 MHz clock and 15 uA active current at 5V keep standby consumption under 1 mA in idle, well within the ENERGY STAR appliance envelope.
Recommended
Hobby and Educational Development Platform
The PIC16C62BT-04/SS is widely supported by hobbyist development boards, ICSP programmers (PICKit 2/4, ICD3/ICD4), and the MPLAB X toolchain, making it a popular teaching platform for 8-bit embedded programming courses. The 28-SSOP package is breadboard-compatible through SSOP-to-DIP breakout adapters, and the 35-instruction mid-range RISC core teaches fundamental concepts (PC, stack, W register, PCLATH paging) without overwhelming beginners. The OTP memory limitation is actually a pedagogical advantage: students learn to write correct firmware the first time rather than relying on iterative flash reprogramming. Educational kits often pair this MCU with simple peripherals (LEDs, pushbuttons, character LCDs) to demonstrate I/O, timers, and interrupts.
Recommended
Battery-Powered Remote Control Unit
For handheld remote controls, garage-door openers, and RF keyfobs, the PIC16C62BT-04/SS offers a 1 uA standby current that supports 5-10 years of shelf life on a single CR2032 coin cell when paired with a sub-1 GHz transmitter (TX-only duty cycle <1%). The 22 I/O pins read a 3x4 matrix keypad, drive a few status LEDs, and provide a wake-up interrupt pin to the RF transmitter's data input. The 4 MHz mid-range core generates Manchester or OOK modulation patterns in firmware without external encoding ICs. The 3.5 KB OTP holds button-debounce tables, transmission security codes, and battery-LED blink routines. Designers should use the WDT to recover from keypad-stuck faults and place a 100 nF decoupling capacitor within 5 mm of VDD for RF-noise immunity.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62BT-04/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62B-04/SS | PIC16C62B-04I/SS | PIC16C62B-04E/SS | PIC16C622-04/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 3.5 KB (2K x 14) OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| I/O Pins | 22 | 22 | 22 | 22 | 22 |
| Temperature Grade | Extended (-40C to +125C) | Commercial | Industrial (-40C to +85C) | Extended (-40C to +125C) | Commercial/Industrial/Extended |
| ADC | No | No | No | No | Yes (8-bit on-chip ADC) |
| Packaging | Tape & Reel (/T) | Tube | Tube | Tube | Tube |
Key Differentiators
- Compact 28-SSOP footprint with 22 I/O (vs PIC16C620-04/SS)
- Larger 3.5 KB OTP program memory (vs PIC16C56A-04/SS)
- Tape-and-reel packaging for SMT production (vs PIC16C62B-04/SS (tube))
- Extended temperature grade for harsh environments (vs PIC16C62B-04/SS (commercial))
Design Notes
Estimated: at 5V VDD and 4 MHz active mode, the PIC16C62BT-04/SS draws approximately 15 uA typical (per datasheet 30430D typical value) plus any I/O sink/source current up to 25 mA per pin. For battery-powered designs, switch to 32.768 kHz LP oscillator and Sleep mode between sensor reads; standby current drops to 1 uA typical. Add a 100 nF decoupling capacitor within 5 mm of VDD (pin 15/27) to suppress digital switching noise on the analog supply rail.
The 28-SSOP package has a 0.65 mm pin pitch and 5.30 mm body width; route all traces on inner layers with a continuous ground pour underneath the SSOP body for thermal spreading and EMI shielding. Keep crystal traces (OSC1/OSC2, pins 24/25) short (<10 mm) and surrounded by ground pour to avoid stray capacitance shifting the oscillator frequency. For ICSP programming, expose RB6 (PGC, pin 12) and RB7 (PGD, pin 13) on a test-point header; do not place series resistors >100 ohm on these pins or programming will fail.
Critical: OTP (One-Time Programmable) program memory CANNOT be erased or reprogrammed. Any firmware bug discovered after programming becomes a bricked unit and requires physical replacement of the IC. Implement a comprehensive firmware validation and code-coverage test suite BEFORE programming OTP units in production. Also note that the MCLR pin (pin 28) is active-low reset and is NOT internally pulled up; an external 10 kohm pull-up to VDD is mandatory for proper operation, and a 100 nF capacitor to ground on MCLR improves reset noise immunity.
Place the ICSP programming header (5-pin: VPP/MCLR, VDD, VSS, PGD, PGC) at the board edge so production programmers can access it without removing the board from its housing. Reserve the I2C pins (RC3/SCL pin 19, RC4/SDA pin 20) with 4.7 kohm pull-up resistors to VDD if the I2C bus will be used; do not enable I2C in firmware without these pull-ups or bus contention will damage the I/O drivers. For SPI master mode, dedicate RC5/SDO (pin 21) as MOSI and use RC2/CCP1 (pin 18) as a clock-elapsed timer rather than bit-banged SCK.
Compliance Information
RoHS compliant per Microchip environmental documentation for /SS lead-free finish. NOT AEC-Q100 qualified - not suitable for safety-critical automotive applications. Reach and conflict-minerals (CMRT) compliance is lot-specific and should be confirmed directly with Microchip for EU production programs.
