PIC16C62A-04E/SS - 8-Bit OTP MCU, 4MHz, 3.5KB | Microchip
MPN: PIC16C62A-04E/SS ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.58 | $75.80 |
| 100 | $6.74 | $674.00 |
| 500 | $5.91 | $2,955.00 |
| 1,000 | $5.07 | $5,070.00 |
PIC16C62A-04E/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripherals such as timers, I/O ports, and communication interfaces. The PIC16C62A belongs to the PIC16C family of low-cost, high-performance, fully-static 8-bit microcontrollers, which sit within the broader PIC architecture hierarchy: PIC10/12/16 baseline and mid-range -> 8-bit PIC MCU -> microcontroller -> embedded computing. The 04E suffix denotes 4MHz maximum clock and Extended temperature range.
Key features include 22 digital I/O pins, three timers (Timer0, Timer1, Timer2), a 5-channel 8-bit Analog-to-Digital Converter (ADC), a synchronous serial port (SSP) supporting SPI and I2C, and a Universal Synchronous Asynchronous Receiver Transmitter (USART). The device supports a wide operating voltage range from 2.5V to 6.0V and consumes only 15 uA typical at 5V/4MHz and 1 uA typical at 3V/32kHz, making it well-suited for low-power and battery-backed designs.
The architecture uses a RISC-like Harvard structure with separate program and data buses, allowing instruction fetch and data access to occur in the same cycle. The OTP EPROM-based program memory enables fast prototype development and low-volume production runs, while the fully-static design simplifies power management by eliminating the minimum clock speed constraint. The extended temperature range also enables deployment in harsh environment applications.
Typical applications include industrial control systems, automotive body electronics, appliance control, sensor interface nodes, and simple consumer products. The combination of OTP memory and Extended temperature range targets engineers building production-ready designs that do not require in-field firmware updates.
When designing with this device, carefully evaluate whether OTP memory fits your firmware iteration strategy. For prototype-heavy or in-field-updatable designs, consider the flash-based PIC16F62x family instead, which offers pin-to-pin compatibility in many variants.
This page synthesizes distributor pricing, drop-in alternatives from the PIC16C family and across brands, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16C62A-04E/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 PIC16C62A-04E/SS (same form factor and footprint) — differing in Timers, Operating Temperature Range, Program Memory Type, Core Architecture, Package / Case.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C62B-04I/SS
✅ Drop-In✓ In Stock
$5.4 / Unit
View Datasheet →PIC16C62A-04/SS
✅ Drop-In✓ In Stock
$2.84 / Unit
View Datasheet →PIC16C62A-04E/SP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$7.2 / Unit
View Datasheet →PIC16C62A-04E/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$4.75 / Unit
View Datasheet →PIC16C62A-04E/SS Maximum Ratings & Electrical Characteristics
| Program Memory Size | 3.5 KB (2K x 14) |
| Program Memory Type | OTP EPROM |
| RAM Size | 128 x 8 bytes |
| CPU Core | PIC16C 8-bit RISC |
| Maximum Clock Frequency | 4 MHz |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Number of I/O Pins | 22 |
| ADC | 5-channel, 8-bit |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Communication Interfaces | USART, SSP (SPI / I2C) |
| Operating Temperature Range | -40 C to +125 C (Extended, 'E' suffix) |
| Package / Case | 28-SSOP (5.30 mm) |
| Mounting Type | Surface Mount |
| Typical Current at 5V/4MHz | 15 uA |
| Typical Current at 3V/32kHz | 1 uA |
| Architecture | Harvard, fully static |
| RoHS Status | Compliant |
PIC16C62A-04E/SS Pin Configuration
| Pin 1 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Pin 2 | RA3/AN3 — Port A bit 3 / analog input 3 |
| Pin 3 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pin 4 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Port B bit 0 / external interrupt |
| Pin 7 | RB1 — Port B bit 1 |
| Pin 8 | RB2 — Port B bit 2 |
| Pin 9 | RB3 — Port B bit 3 |
| Pin 10 | RB4 — Port B bit 4 |
| Pin 11 | RB5 — Port B bit 5 |
| Pin 12 | RB6 — Port B bit 6 |
| Pin 13 | RB7 — Port B bit 7 |
| Pin 14 | VSS — Ground reference |
| Pin 15 | VDD — Positive supply voltage |
| Pin 16 | RC0 — Port C bit 0 |
| Pin 17 | RC1 — Port C bit 1 |
| Pin 18 | RC2 — Port C bit 2 |
| Pin 19 | RC3 — Port C bit 3 |
| Pin 20 | RC4 — Port C bit 4 |
| Pin 21 | RC5 — Port C bit 5 |
| Pin 22 | RC6 — Port C bit 6 |
| Pin 23 | RC7 — Port C bit 7 |
| Pin 24 | VSS — Ground reference |
| Pin 25 | VDD — Positive supply voltage |
| Pin 26 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Pin 27 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Pin 28 | OSC2/CLKOUT — Oscillator output / clock out |
Typical Applications
PIC16C62A-04E/SS is suitable for 6 applications: Industrial Control Systems, Automotive Body Electronics, Home Appliance Control, Sensor Interface Nodes, Consumer Product Controllers, HVAC and Building Automation.
Industrial Control Systems
The PIC16C62A-04E/SS fits industrial control nodes that require a deterministic 8-bit controller with extended-temperature tolerance. The -40 C to +125 C operating range supports deployment in unheated enclosures near motors or in cabinet interior mounting, while the 22 digital I/O pins drive relays, optocouplers, and discrete indicator LEDs directly via 25 mA sink/source. The 4 MHz clock delivers 1 MIPS peak throughput, adequate for sensor polling, slow-loop PID, and discrete-state machine control typical of conveyor, valve, and pump sequencer logic. The integrated 5-channel 8-bit ADC reads back potentiometers, thermistors, and 4-20 mA sense resistors, eliminating an external ADC chip. Engineers typically choose this part for stable, fixed-firmware designs where the OTP EPROM's one-time programming cost is acceptable in exchange for long-term BOM stability.
Recommended
Automotive Body Electronics
The PIC16C62A-04E/SS Extended temperature grade qualifies it for non-safety automotive body electronics such as interior lighting controllers, mirror position drivers, seat-occupancy indicator nodes, and HVAC flap actuators. The wide 2.5 V to 6.0 V operating range tolerates cranking transients and load-dump events common on 12 V automotive rails when paired with a simple TVS clamp and LDO. The USART and SSP peripherals provide LIN-bus slave capability with the addition of a LIN transceiver IC, enabling body-network nodes at low BOM cost. The 22 I/O pins multiplex seat-switch matrices, LED bar indicators, and small brushed-motor half-bridges via external FET drivers. Designers should target the PIC16F62x flash-based family for new designs to retain in-field firmware upgrade capability across the vehicle lifecycle.
Recommended
Home Appliance Control
The PIC16C62A-04E/SS serves well in small home appliances such as coffee makers, microwave oven keypad controllers, washing-machine user-interface panels, and dishwasher cycle timers. The OTP EPROM locks the firmware at production time, preventing accidental code corruption from supply glitches or EMI events typical in switching power-supply environments. The 5-channel ADC reads temperature sensors (NTC), water level electrodes, and rotary knob positions; the 22 I/O pins drive 7-segment LED displays, triac optocouplers, and buzzer drivers directly. Low-power consumption (15 uA typical at 5 V/4 MHz and 1 uA typical at 3 V/32 kHz) supports battery-backed clock and timer functions in cordless appliances. The 4 MHz clock is sufficient for state-machine user-interface logic and slow ADC scanning at 100 Hz to 1 kHz rates.
Recommended
Sensor Interface Nodes
The PIC16C62A-04E/SS acts as a low-cost sensor interface node in distributed measurement systems where a small MCU aggregates one to four analog sensors and forwards data over a digital link. The 5-channel 8-bit ADC multiplexes thermistor, photodiode, humidity, and pressure sensor inputs at sample rates up to ~20 kHz when clocked at 4 MHz, adequate for slow environmental monitoring. The integrated SSP supports I2C or SPI backhaul to a master controller or sensor hub, while the USART provides a 9.6-115.2 kbaud async link for RS-485 nodes with an external transceiver. The 128-byte RAM holds calibration constants and rolling average buffers; the 3.5 KB OTP stores linearization tables and protocol stacks. The Extended temperature range suits outdoor and HVAC duct sensing.
Recommended
Consumer Product Controllers
The PIC16C62A-04E/SS suits fixed-function consumer products where the firmware never changes after production: remote-control transmitters, simple toys, fitness tracker displays, and timer-based kitchen gadgets. The Harvard RISC core executes one instruction per 4-clock cycle, giving 1 MIPS at 4 MHz - more than enough for key-scan debouncing, LED PWM dimming, and LCD segment driving. The OTP EPROM prevents reverse-engineering of proprietary firmware, a benefit for IP-sensitive consumer designs. The PIC16C62A-04E/SS Extended temperature rating supports products sold into outdoor, automotive, or industrial markets where consumer-grade parts would fail. Battery-powered designs benefit from the 1 uA typical sleep current at 3 V/32 kHz, extending coin-cell life in remote controls.
Recommended
HVAC and Building Automation
The PIC16C62A-04E/SS powers small building-automation nodes such as VAV box controllers, zone thermostat remotes, and blind/shade motor drivers that communicate over RS-485 or simple UART links to a central BACnet or Modbus gateway. The extended -40 C to +125 C range tolerates plenum-space mounting and rooftop unit exposure, while the 22 I/O pins drive TRIAC optocouplers for 24 VAC damper actuators and tri-state relays for fan-speed switching. The 5-channel ADC reads onboard temperature, supply voltage, and potentiometer setpoints, eliminating external ADC ICs. The SSP enables I2C connection to EEPROM for runtime setpoint storage; the USART supports 9.6 kbaud Modbus RTU slave operation for legacy building-management networks. OTP EPROM locks the commissioning firmware against accidental corruption.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62A-04E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62B-04I/SS | PIC16C62A-04/SS | PIC16C62A-04E/SP | PIC16C62A-04E/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP | 28-SSOP | 28-SPDIP | 28-SOIC (7.50 mm) |
| Program Memory | 3.5 KB (2K x 14) OTP EPROM | 3.5 KB OTP EPROM | 3.5 KB OTP EPROM | 3.5 KB OTP EPROM | 3.5 KB OTP EPROM |
| RAM | 128 x 8 bytes | 128 x 8 bytes | 128 x 8 bytes | 128 x 8 bytes | 128 x 8 bytes |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Operating Temperature | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) |
| Number of I/O Pins | 22 | 22 | 22 | 22 | 22 |
| Lifecycle Status | NRND | Obsolete | NRND | NRND | NRND |
Key Differentiators
- Extended temperature grade (-40 C to +125 C) (vs PIC16C62A-04/SS)
- Revised silicon die (vs PIC16C62B-04I/SS)
- Compact 28-SSOP surface-mount footprint (vs PIC16C62A-04E/SP (28-SPDIP))
Design Notes
The PIC16C62A-04E/SS accepts 2.5 V to 6.0 V on VDD. According to the Microchip PIC16C6x datasheet, place a 0.1 uF decoupling ceramic capacitor close to each VDD/VSS pair (there are two VDD pins and three VSS pins on the 28-SSOP package), plus a 10 uF bulk tantalum or aluminum-polymer cap at the board supply input. The fully-static core permits stopping the oscillator in SLEEP mode; total sleep current is typically 1 uA at 3 V, suitable for battery-backed designs.
Oscillator traces (OSC1/OSC2, pins 27 and 28 in the 28-SSOP package) should be kept short and surrounded by a ground guard ring to minimize EMI coupling into adjacent analog inputs. According to Microchip layout guidelines, avoid routing digital switching signals under the crystal or oscillator area. Place the MCLR pull-up (typically 10 kohm) close to the pin; if ICSP is required, route PGM/PGD/PGC lines away from analog signals and add ESD protection on the MCLR line.
Because the PIC16C62A-04E/SS uses OTP EPROM, firmware cannot be updated in the field once programmed. According to Microchip programming documentation, OTP programming requires a high-voltage VPP pulse (~13 V on MCLR) plus VDD at device-specified level; verify programmer compatibility and socket type before committing to production volume. Engineers targeting in-field update capability should migrate to the flash-based PIC16F62x family, which shares the same 28-SSOP footprint in many variants.
Compliance Information
RoHS compliant per Microchip product page and DigiKey listing. AEC-Q100 not qualified - the PIC16C62A-04E/SS is Extended temperature grade but not formally automotive-qualified; designers needing AEC-Q100 must use a Q100-qualified derivative. Lead-free per Microchip product family standards.
