PIC16C62B-04I/SS - 4MHz 8-Bit OTP MCU, 3.5KB | Microchip
MPN: PIC16C62B-04I/SS β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.45 | $8.45 |
| 10 | $7.6 | $76.00 |
| 100 | $6.78 | $678.00 |
| 500 | $6.05 | $3,025.00 |
| 1,000 | $5.4 | $5,400.00 |
PIC16C62B-04I/SS Overview
A PIC microcontroller (Programmable Interrupt Controller, though in Microchip's usage it stands for Peripheral Interface Controller) is a compact, single-chip computer integrating a CPU core, non-volatile program memory, volatile RAM, and configurable peripherals such as timers, comparators, capture/compare/PWM modules, and serial I/O. Within the broader taxonomy, the PIC16C62B sits in the hierarchy: microcontroller -> embedded MCU -> 8-bit RISC MCU -> mid-range PIC16 family -> CMOS OTP variant. The 16C-series OTP parts are one-time-programmable, distinct from the flash-based 16F-series that dominate new designs, making the 16C62B useful for legacy industrial systems, secure applications where firmware must not be field-updateable, and cost-optimised production runs.
Key features include two 8-bit timers (Timer0, Timer2) plus one 16-bit Timer1, a 5-channel 8-bit A/D converter (PIC16C62B variant specific), a USART/SCI module for asynchronous and synchronous serial, an SSP module for SPI/I2C, a watchdog timer with on-chip RC oscillator, brown-out reset, and power-on reset. The device operates across 2.5V to 6.0V (typical 5V) with low-power sleep current. Three I/O ports (PORTA 6 pins, PORTB 8 pins, PORTC 8 pins) provide flexible digital interfacing.
Architecturally, the PIC16C62B uses a Harvard RISC core with separate program and data buses, a 14-bit-wide instruction path, and a hardware stack eight levels deep. The OTP EPROM cell is windowless on plastic SSOP, ensuring firmware cannot be read back optically, a security feature for legacy industrial controls. The CMOS process yields low quiescent current, with sleep currents below 1 microB typical.
Typical applications include industrial motor control (small DC and stepper drives), appliance controllers (washing machines, microwave ovens), security and access control panels, smart sensor signal conditioning with on-chip ADC, automotive body electronics (pre-CAN legacy modules), and instrumentation front-ends where deterministic timing matters. Designers also deploy the PIC16C62B in safety-critical legacy systems because OTP firmware is immune to bit-flip induced corruption.
When designing with the PIC16C62B-04I/SS, ensure the programming firmware is fully validated before mask/OTP commit because OTP parts cannot be re-programmed. Use MPLAB development environment with ICD or PM3 programmer. For new designs consider flash-based PIC16F628 or PIC16F88 equivalents, but for legacy system replacement the C62B remains a drop-in solution.
This page synthesises distributor pricing, drop-in alternative cross-references, design notes, and pinout diagrams not consolidated on the manufacturer datasheet, giving engineers a single, citable source for the PIC16C62B-04I/SS.
Drop-in alternatives for PIC16C62B-04I/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 PIC16C62B-04I/SS (same form factor and footprint) β differing in Program Memory Type, RAM Size, RoHS Status, Instruction Set, Operating Temperature Range.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16C62B-04/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F628-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F88-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16C622A-04I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1847-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16C62B-04I/SS Maximum Ratings & Electrical Characteristics
| Product Family | PIC16C6xx Mid-Range |
| Core Architecture | 8-bit RISC Harvard |
| CPU Speed | 4 MHz |
| Program Memory Type | OTP EPROM (One-Time-Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 bytes |
| Data EEPROM | Not present (refer PIC16F62x) |
| Number of I/O Pins | 22 |
| Package | 28-pin SSOP (0.209 inch / 5.30 mm body width) |
| Supply Voltage | 2.5 V to 6.0 V (typical 5 V) |
| Operating Temperature | -40 C to +85 C (Industrial, 'I' suffix) |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| A/D Converter | 5-channel, 8-bit |
| Serial Communication | USART/SCI, SSP (SPI / I2C) |
| Instruction Set | 35 single-word instructions, 14-bit wide |
| Interrupt Sources | Multiple (peripherals + external) |
| Watchdog Timer | Yes, with on-chip RC oscillator |
| Brown-out Reset | Yes |
| Power-on Reset | Yes |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC16C62B-04I/SS Pin Configuration
| Pin 1 | MCLR/VPP β Master clear reset input / programming voltage |
| Pin 2 | RA0/AN0 β PORTA bit 0 / Analog input 0 |
| Pin 3 | RA1/AN1 β PORTA bit 1 / Analog input 1 |
| Pin 4 | RA2/AN2 β PORTA bit 2 / Analog input 2 |
| Pin 5 | RA3/AN3/VREF β PORTA bit 3 / Analog input 3 / ADC voltage reference |
| Pin 6 | RA4/T0CKI β PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS β PORTA bit 5 / Analog input 4 / SPI slave select |
| Pin 8 | OSC1/CLKIN β Oscillator crystal input / external clock |
| Pin 9 | OSC2/CLKOUT β Oscillator crystal output / clock output |
| Pin 10 | RC0/T1OSO/T1CKI β PORTC bit 0 / Timer1 oscillator out / Timer1 clock |
| Pin 11 | RC1/T1OSI/CCP2 β PORTC bit 1 / Timer1 oscillator in / CCP2 |
| Pin 12 | RC2/CCP1 β PORTC bit 2 / Capture/Compare/PWM 1 |
| Pin 13 | RC3/SCK/SCL β PORTC bit 3 / SPI clock / I2C clock |
| Pin 14 | RC4/SDI/SDA β PORTC bit 4 / SPI data in / I2C data |
| Pin 15 | RC5/SDO β PORTC bit 5 / SPI data out |
| Pin 16 | RC6/TX/CK β PORTC bit 6 / USART async transmit / sync clock |
| Pin 17 | RC7/RX/DT β PORTC bit 7 / USART async receive / sync data |
| Pin 18 | VSS β Ground reference |
| Pin 19 | VDD β Positive supply voltage (2.5 V to 6.0 V) |
| Pin 20 | RB0/INT β PORTB bit 0 / External interrupt |
| Pin 21 | RB1 β PORTB bit 1 |
| Pin 22 | RB2 β PORTB bit 2 |
| Pin 23 | RB3 β PORTB bit 3 |
| Pin 24 | RB4 β PORTB bit 4 |
| Pin 25 | RB5 β PORTB bit 5 |
| Pin 26 | RB6 β PORTB bit 6 |
| Pin 27 | RB7 β PORTB bit 7 |
| Pin 28 | VDD β Positive supply voltage (redundant VDD for SSOP) |
Typical Applications
PIC16C62B-04I/SS is suitable for 6 applications: Industrial Motor and Solenoid Control, Home Appliance Control Boards, Security and Access Control Panels, Smart Sensor Signal Conditioning, Automotive Body Electronics (Legacy Modules), Instrumentation and Test Equipment Front-Ends.
Industrial Motor and Solenoid Control
The PIC16C62B-04I/SS's 4 MHz deterministic 8-bit RISC core, 22 I/O lines, and 5-channel 8-bit ADC are ideal for small DC and stepper motor controllers in industrial machinery. Its OTP EPROM firmware prevents accidental field reprogramming that could cause unsafe operation, while the Timer0/Timer1/Timer2 trio enables precise PWM generation for servo-loop control. Industrial -40 C to +85 C qualification supports factory-floor deployments without additional thermal hardening.
Recommended
Home Appliance Control Boards
Washing machines, microwave ovens, dishwashers, and refrigerator controllers benefit from the PIC16C62B-04I/SS's compact 28-pin SSOP footprint, low cost, and OTP firmware that locks control algorithms against reverse engineering. The integrated brown-out reset, watchdog timer, and power-on reset improve appliance reliability against mains brown-outs, while the 5-channel ADC digitises temperature and humidity sensor inputs for thermostatic regulation.
Recommended
Security and Access Control Panels
The PIC16C62B-04I/SS is widely deployed in legacy alarm panels, access controllers, and intrusion-detection systems because OTP EPROM prevents firmware tampering - an attacker cannot re-flash the controller with malicious code via debug interfaces. The PIC16C6xx USART enables keypad-to-host communication, while PORTB interrupts handle PIR motion and door-magnetic sensors. Existing field deployments worldwide remain operational and require ongoing replacement stock.
Recommended
Smart Sensor Signal Conditioning
Front-end signal conditioning for strain-gauge bridges, thermocouples, and thermistor arrays leverages the PIC16C62B-04I/SS's 5-channel 8-bit ADC and Timer1 capture input for frequency-output sensors. With 3.5 KB OTP firmware, calibration coefficients and linearisation tables are locked at production, preventing field tampering with measurement accuracy. The 5 V operating range matches industrial transducer supplies and simplifies 4-20 mA loop interfaces.
Recommended
Automotive Body Electronics (Legacy Modules)
Pre-CAN-era automotive body controllers, lighting modules, and seat-position memory systems relied on the PIC16C62B-04I/SS for its industrial -40 C to +85 C temperature range, OTP firmware security, and 22 I/O lines. The PIC16C6xx family is documented in many automotive reference designs from the late 1990s and early 2000s, and the part remains in service for legacy vehicle maintenance and spare-part replacement in commercial fleets.
Recommended
Instrumentation and Test Equipment Front-Ends
Laboratory bench instruments, multimeters, and oscilloscope front-ends use the PIC16C62B-04I/SS for deterministic control of relay multiplexers, display drivers, and rotary encoder inputs. The PICmicro Mid-Range Reference Manual (DS33023) documents the deterministic 4-cycle instruction timing, allowing accurate time-base generation for measurement instrumentation. The 28-pin SSOP footprint fits dense multi-channel boards.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62B-04I/SS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62B-04/SS | PIC16F628-I/SS | PIC16F88-I/SS | PIC16C622A-04I/SS | PIC16F1847-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP | 28-pin SSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP EPROM 3.5 KB | OTP EPROM 3.5 KB | Flash 3.5 KB | Flash 7 KB | OTP EPROM 3.5 KB | Flash 7 KB |
| RAM Size | 128 bytes | 128 bytes | 224 bytes | 368 bytes | 128 bytes | 1 KB |
| CPU Speed | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz | 32 MHz |
| ADC | 5-channel 8-bit | 5-channel 8-bit | None (comparators only) | 8-channel 10-bit | None (2 comparators) | 12-channel 10-bit |
| Operating Temperature | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Data EEPROM | Not present | Not present | 128 bytes | 256 bytes | Not present | 256 bytes |
| I/O Pins | 22 | 22 | 22 | 22 | 22 | 22 |
| Lifecycle Status (2026) | NRND | NRND | Active | Active | NRND | Active |
Key Differentiators
- OTP EPROM firmware security (vs PIC16F628-I/SS)
- 5-channel 8-bit ADC for analog signal conditioning (vs PIC16C622A-04I/SS)
- Industrial -40 C to +85 C temperature range (vs PIC16C62B-04/SS)
Design Notes
The PIC16C62B-04I/SS operates from 2.5 V to 6.0 V (typical 5 V) with separate analog and digital supplies on the SSOP package. Place a 100 nF ceramic decoupling capacitor adjacent to each VDD pin (pins 19 and 28) with a 10 microF bulk tantalum or aluminium-polymer capacitor near the regulator output. For ADC accuracy, route AVdd/AVss on the same die through pin 19/18 respectively, and avoid high-current digital traces under the analog references to minimise switching noise coupling into the 5-channel ADC.
OTP EPROM programming requires 13 V on MCLR/VPP with specific timing per the PIC16C6xx datasheet programming specification; the SSOP package is plastic and lacks a UV-erase window, so firmware MUST be fully verified before device commit. Use MPLAB X IDE with PM3 or ICD-compatible programmer. Brown-out reset must be configured (BOREN bit) for industrial deployments; without BOR, slow-rising supplies can latch the MCU in indeterminate states. Watchdog timer postscaler must be cleared in long-running loops to prevent unintended reset.
Place a 4 MHz or resonator crystal within 5 mm of OSC1 (pin 8) and OSC2 (pin 9) with short, symmetric traces to ground. For high-noise environments, add a 1 microF capacitor on MCLR/VPP (pin 1) to ground to prevent spurious resets. The SSOP 5.30 mm body width requires careful solder paste stencil design - use 0.15 mm aperture thickness with 1:1 pad-to-stencil ratio for reliable production assembly per IPC-7525 guidelines.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 not applicable for non-automotive qualified part; for automotive applications use PIC16F628-I/SS or PIC16F88-I/SS automotive-qualified variants.
