PIC16C62AT-04E/SO - 8-Bit 4MHz 3.5KB OTP MCU | Microchip
MPN: PIC16C62AT-04E/SO ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.5 | $5.50 |
| 10 | $4.95 | $49.50 |
| 100 | $4.4 | $440.00 |
| 500 | $3.9 | $1,950.00 |
| 1,000 | $3.45 | $3,450.00 |
PIC16C62AT-04E/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral interfaces such as timers, capture/compare/PWM modules, and serial communication blocks. The PIC16C62A belongs to Microchip's mid-range PIC16C OTP family, sitting in the device hierarchy as PIC16C62A -> PIC16Cxx mid-range MCU -> 8-bit PIC microcontroller -> Microcontroller (MCU) -> embedded computing IC. These MCUs are commonly used as state machines, glue logic, sensor front-ends, and human-machine interface controllers in cost-sensitive industrial and consumer products.
Key features of this part include the 35 single-word instructions of the PIC mid-range RISC architecture, 14-bit wide instruction word, 8-bit data path, two 8-bit timers plus one 16-bit timer/counter, a 10-bit (multi-channel) Analog-to-Digital Converter, a Universal Synchronous/Asynchronous Receiver/Transmitter (USART) and a synchronous Serial Peripheral Interface (SPI/I2C). The 22 I/O pins each source/sink up to 25 mA, making them capable of directly driving LEDs and small relays without external buffers.
The PIC16C62A is built on Microchip's legacy 16C OTP CMOS process; the OTP memory is programmed once with a device programmer and cannot be erased, which suits low-cost high-volume production where firmware is finalized. The architecture is Harvard-style with separate program and data buses, providing deterministic instruction timing useful for real-time control loops.
Typical applications for the PIC16C62AT-04E/SO include industrial control panels, appliance controllers, automotive body electronics, low-end sensor signal conditioners, and battery-powered metering instruments where its wide -40 °C to +125 °C range and 22 high-drive I/O pins are decisive. The '04' speed grade denotes 4 MHz operation and the 'T' suffix marks tape-and-reel packaging, while 'E' indicates the extended industrial temperature window.
When designing with this OTP part, plan a parallel programming flow and order sufficient production volume before code release, because OTP devices cannot be reprogrammed or field-updated. Reserve one I/O pin as a firmware-revision strap if you anticipate derivatives, and place a 0.1 µF decoupling capacitor within 5 mm of VDD with a bulk 10 µF tantalum at the board supply entry to suppress the inrush current of the internal charge-pump regulator.
This page synthesizes Microchip family specifications, verified distributor stock data, drop-in PIC16C62A and PIC16C621A family equivalents, and practical design notes not found in the standalone manufacturer datasheet.
Drop-in alternatives for PIC16C62AT-04E/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 PIC16C62AT-04E/SO (same form factor and footprint) — differing in Core Architecture, Operating Temperature Range, Program Memory Size, Program Memory Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C62A-04E/SO
✅ Drop-In✓ In Stock
$4.75 / Unit
View Datasheet →PIC16C62A-04/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C62A-04I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C621A-04E/SO
✅ Drop-In✓ In Stock
$1.75 / Unit
View Datasheet →PIC16F628A-I/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16C62AT-04E/SO Maximum Ratings & Electrical Characteristics
| Manufacturer | Microchip Technology |
| Series | PIC16C |
| Family | PIC16C62A (mid-range 8-bit OTP MCU) |
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Program Memory Type | OTP (One-Time-Programmable) EPROM |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| RAM Size | 128 bytes |
| Maximum CPU Clock | 4 MHz |
| Instruction Word Width | 14 bits |
| Supply Voltage (VDD) | 5 V nominal |
| Number of I/O Pins | 22 |
| I/O Source/Sink Current | 25 mA per pin |
| Package / Case | 28-SOIC (7.50 mm body width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 °C to +125 °C (Extended, 'E') |
| Packaging | Tape & Reel ('T' suffix) |
| Speed Grade | 04 = 4 MHz |
| Peripherals | USART, SSP (SPI/I2C), 10-bit ADC, 2x 8-bit Timer + 1x 16-bit Timer |
PIC16C62AT-04E/SO Pin Configuration
| Pin 1 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| Pin 2 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| Pin 3 | RA2/AN2/VREF- — Port A bit 2 / Analog input channel 2 / ADC negative reference |
| Pin 4 | RA3/AN3/VREF+ — Port A bit 3 / Analog input channel 3 / ADC positive reference |
| Pin 5 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input (open-drain) |
| Pin 6 | RA5/SS/AN4 — Port A bit 5 / SPI Slave Select / Analog input channel 4 |
| Pin 7 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Pin 8 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Pin 9 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / Timer 1 clock input |
| Pin 10 | RC1/T1OSI — Port C bit 1 / Timer 1 oscillator input |
| Pin 11 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM 1 |
| Pin 12 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Pin 13 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Pin 14 | RC5/SDO — Port C bit 5 / SPI data out |
| Pin 15 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| Pin 16 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| Pin 17 | RB0/INT — Port B bit 0 / External interrupt input |
| Pin 18 | RB1 — Port B bit 1 |
| Pin 19 | RB2 — Port B bit 2 |
| Pin 20 | RB3 — Port B bit 3 |
| Pin 21 | RB4 — Port B bit 4 |
| Pin 22 | RB5 — Port B bit 5 |
| Pin 23 | RB6/PGC — Port B bit 6 / In-circuit Debugger clock |
| Pin 24 | RB7/PGD — Port B bit 7 / In-circuit Debugger data |
| Pin 25 | VDD — Positive supply voltage (5 V nominal) |
| Pin 26 | VSS — Ground reference |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | NC — Not connected (per datasheet) |
Typical Applications
PIC16C62AT-04E/SO is suitable for 6 applications: Industrial Control Panel MCU, Appliance Controller Board, Automotive Body Electronics, Sensor Signal Conditioner / Front-End, Battery-Powered Metering Instrument, HMI / Keypad & Display Controller.
Industrial Control Panel MCU
The PIC16C62AT-04E/SO is well suited to industrial control panel applications where its 22 high-drive I/O pins (each rated 25 mA source/sink) can directly switch indicator LEDs, relays, and triac optocouplers without external buffers. Its extended -40 °C to +125 °C operating range covers factory-floor thermal stress, and the on-chip USART plus SSP (SPI/I2C) interface simplifies links to HMI displays and keypads. The 4 MHz mid-range core executes deterministic 200 ns instruction cycles, which is fast enough for SCADA-style state machines and Modbus RTU slave firmware.
Recommended
Appliance Controller Board
For white-goods controllers (washing machines, dishwashers, microwave ovens), the PIC16C62AT-04E/SO delivers 3.5 KB of OTP program memory - more than enough for motor-control state graphs, user-interface handling, and safety interlocks. The 10-bit ADC multiplexed across multiple channels reads temperature sensors and water-level probes directly, while three timers drive PWM outputs for variable-speed motor control. The 28-SOIC package is easy to place on single-sided appliance PCBs and survives the high-humidity, high-temperature environment of laundry equipment.
Recommended
Automotive Body Electronics
The PIC16C62AT-04E/SO serves automotive body-electronics modules such as mirror controllers, seat-position memory, and interior lighting drivers. Its 25 mA per-pin drive directly switches LED clusters and small solenoids, eliminating driver transistors and reducing BOM cost. The wide -40 °C to +125 °C temperature window meets under-dash and door-module thermal requirements, and the 14-bit PIC instruction set simplifies coding of CAN/LIN software stacks via the USART peripheral. Note that for new AEC-Q100 designs the PIC16F628A-Q1 is preferred; this 'C' part is typically used for service replacements of legacy modules.
Recommended
Sensor Signal Conditioner / Front-End
Battery-powered sensor front-ends leverage the PIC16C62AT-04E/SO's 10-bit ADC, 22 I/O, and 5 V supply to digitize analog sensors (temperature, pressure, gas, current) and emit the result through SPI or USART to a host MCU. The 4 MHz mid-range core executes sample-and-forward code paths in microseconds, while the low-pin-count 28-SOIC keeps the PCB footprint minimal. The 'E' (extended) temperature grade is suitable for outdoor sensor pods, HVAC duct probes, and industrial flow meters that experience wide thermal swings.
Recommended
Battery-Powered Metering Instrument
For electricity, gas, and water meter designs the PIC16C62AT-04E/SO is a proven workhorse: the 14-bit PIC instruction set produces compact metering code, the USART drives optical ports or wireless modules, and the 22 I/O handle LCD segments, pulse counters, and tamper inputs. The OTP memory prevents end-user firmware tampering - a regulatory requirement for revenue-grade metering in many jurisdictions. Although newer PIC16F and PIC18 Flash parts are now preferred for new meter designs, millions of installed PIC16C62A meters still depend on this part for service spares.
Recommended
HMI / Keypad & Display Controller
The PIC16C62AT-04E/SO fits low-cost HMI boards that scan 4x4 or 8x8 keypads and drive character LCDs or small graphic displays. The 22 high-drive I/O directly connect to keypad rows/columns and LCD control lines, eliminating external scan-matrix ICs. The SSP (SPI/I2C) peripheral interfaces to LCD driver chips such as the MCP23S17/PCF8577, while the USART provides debug logging. Industrial panels benefit from the -40 °C to +125 °C extended operating range, and the 28-SOIC package is compatible with hand-solder rework for low-volume HMI prototypes.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C62AT-04E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C62A-04E/SO | PIC16C62A-04/SO | PIC16C62A-04I/SO | PIC16C621A-04E/SO | PIC16F628A-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (7.50 mm) | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 1.75 KB OTP (-50%) | 3.5 KB Flash |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 96 bytes (-25%) | 224 bytes (+75%) |
| Maximum Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz (+400%) |
| Operating Temperature | -40 °C to +125 °C (Extended) | -40 °C to +125 °C (E) | 0 °C to +70 °C (Commercial) | -40 °C to +85 °C (Industrial) | -40 °C to +125 °C (E) | -40 °C to +85 °C (Industrial) |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (reprogrammable) |
| Number of I/O Pins | 22 | 22 | 22 | 22 | 13 (-41%) | 16 (-27%) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
Key Differentiators
- Extended -40 °C to +125 °C industrial temperature grade (vs PIC16C62A-04/SO)
- Tape-and-reel packaging for high-volume SMT assembly (vs PIC16C62A-04E/SO)
- Full 22-I/O PIC16C62A peripheral set with USART and SSP (vs PIC16C621A-04E/SO)
- Flash variant offers in-circuit reprogrammability and active lifecycle (vs PIC16F628A-I/SO)
Design Notes
Place a 0.1 µF ceramic decoupling capacitor within 5 mm of the VDD pin (28-SOIC pin 25) and add a 10 µF tantalum or low-ESR electrolytic bulk capacitor at the board supply entry. The PIC16C62A draws brief inrush currents when the internal charge-pump clock synthesizer starts; inadequate bulk capacitance can cause VDD droops that trigger the Brown-Out Reset. Estimated: the part typically draws < 2 mA active at 4 MHz/5 V, so a single 100 nF ceramic per MCU is generally sufficient.
Keep the 28-SOIC trace from OSC1 (pin 7) and OSC2 (pin 8) to the crystal or resonator as short as possible - ideally under 10 mm - and surround the oscillator traces with a ground pour tied to VSS (pin 26). For crystals add a 10-33 pF load capacitor pair from each oscillator pin to ground, sized per the crystal manufacturer's CL specification. Long oscillator traces inject noise into the high-gain input, causing erratic startup or frequency drift on noisy industrial boards.
The 'T' suffix in PIC16C62AT-04E/SO means Tape and Reel packaging, not a temperature grade - this is a frequent source of confusion. Temperature grade is the letter immediately before the speed number: 'E' = Extended (-40 °C to +125 °C), 'I' = Industrial (-40 °C to +85 °C), no suffix = Commercial (0 °C to +70 °C). Misreading the suffix can lead to ordering a commercial-temperature part for a -40 °C application, which then fails field-low-temperature testing.
The 28-SOIC package has a thermal resistance of approximately 80 °C/W (junction-to-ambient) on a standard JEDEC test board - this is far higher than an SSOP or QFN equivalent. For continuous 25 mA I/O loading with all 22 pins driven simultaneously the part will dissipate roughly 0.5 W, so for high-I/O-count applications consider derating by 30% or selecting the SSOP variant. Estimated: at 4 MHz/5 V the core dissipates < 100 mW and is not a thermal constraint; the I/O sink current is the dominant heat source.
Compliance Information
The PIC16C62A family predates widespread RoHS adoption; Microchip has not published a current RoHS compliance statement for the 'C' (OTP) family on the modern product page. The PIC16F628A-I/SO is the RoHS-compliant active replacement recommended for new designs.
