PIC16C64A-10/PT - 8-Bit 10MHz OTP MCU 3.5KB | Microchip
MPN: PIC16C64A-10/PT ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.21 | $4.21 |
| 10 | $3.95 | $39.50 |
| 100 | $3.62 | $362.00 |
| 500 | $3.28 | $1,640.00 |
| 1,000 | $2.97 | $2,970.00 |
PIC16C64A-10/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, non-volatile data EEPROM, and a set of peripheral modules into one package. Within the broader PIC family, the PIC16C64A belongs to the mid-range PIC16 architecture, which is itself a subset of the 8-bit Harvard-architecture MCU category. This places the part in a lineage that runs: PIC16C64A -> PIC16C6x family -> PIC16 mid-range architecture -> 8-bit PIC microcontroller -> embedded MCU -> semiconductor. The mid-range architecture delivers roughly a 5x performance improvement over the earlier PIC16C5x baseline through a 14-bit instruction word, an 8-level hardware stack, and interrupt-driven peripheral control.
Key features include 33 digital I/O pins across PORTA through PORTE, three timer modules (Timer0, Timer1, Timer2), a USART module for asynchronous/synchronous serial communications, and a Parallel Slave Port. The device operates from a 2.5V to 6.0V supply and is qualified for the 0C to +70C commercial temperature range. The TQFP-44 package is suitable for standard SMT assembly lines and offers a manageable footprint for hand-solderable prototypes.
Typical applications include industrial control logic, embedded sensor interfaces, low-cost consumer electronics, motor control peripherals, and pre-production engineering builds that target a later flash-based PIC16F design. Designers frequently start with the PIC16C64A for cost-down OTP production after firmware is locked, then transition to PIC16F variants for flexibility during development.
When designing with this device, note that OTP memory cannot be erased - firmware must be fully validated on a flash equivalent (such as PIC16F877A) before committing to the PIC16C64A for production. The /PT TQFP package requires a 0.8mm lead pitch layout, which is straightforward but demands reflow profile control. According to the Microchip PIC16C6X datasheet, the device is marked "Not Recommended for new designs" and Microchip recommends the PIC16C65B or the flash-based PIC16F877A as modern successors.
This page synthesizes distributor pricing (LCSC: $4.2074 as of 2026-09-17), drop-in same-package alternatives, and practical design migration notes not aggregated in the manufacturer datasheet alone.
Drop-in alternatives for PIC16C64A-10/PT — 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 PIC16C64A-10/PT (same form factor and footprint) — differing in Operating Temperature Range, Package, Timers, Watchdog Timer, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C64A-04I/PT
✅ Drop-In✓ In Stock
$4.61 / Unit
View Datasheet →PIC16C64A-04E/PT
✅ Drop-In✓ In Stock
$7.35 / Unit
View Datasheet →PIC16C65B-10/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F877A-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C64A-04I/PQ
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$6.4 / Unit
View Datasheet →PIC16C64A-10/PT Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit Microcontroller (MCU) |
| Family | PIC16C6x (PIC Mid-Range) |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| RAM | 128 bytes |
| Maximum CPU Frequency | 10 MHz |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Operating Temperature Range | 0C to +70C (Commercial) |
| Number of I/O Pins | 33 |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Communication Modules | USART (SCI), PSP |
| Package | 44-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Lead Pitch | 0.8 mm |
| RoHS Status | Compliant |
PIC16C64A-10/PT Pin Configuration
| Pin 1 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Pin 2 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Pin 3 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Pin 4 | RA3/AN3/VREF — PORTA bit 3 / Analog input / Voltage reference |
| Pin 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 6 | RA5/SS/AN4 — PORTA bit 5 / SPI slave select / Analog input 4 |
| Pin 7 | RE0/RD/AN5 — PORTE bit 0 / Parallel Slave Port read / Analog input 5 |
| Pin 8 | RE1/WR/AN6 — PORTE bit 1 / Parallel Slave Port write / Analog input 6 |
| Pin 9 | RE2/CS/AN7 — PORTE bit 2 / Parallel Slave Port chip select / Analog input 7 |
| Pin 10 | VDD — Positive power supply (2.5V to 6.0V) |
| Pin 11 | VSS — Ground reference |
| Pin 12 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 13 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Pin 14 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 15 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 module |
| Pin 16 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM module 1 |
| Pin 17 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 18 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port data bit 0 |
| Pin 19 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port data bit 1 |
| Pin 20 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port data bit 2 |
| Pin 21 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port data bit 3 |
| Pin 22 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 23 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 24 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| Pin 25 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| Pin 26 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port data bit 4 |
| Pin 27 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port data bit 5 |
| Pin 28 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port data bit 6 |
| Pin 29 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port data bit 7 |
| Pin 30 | VSS — Ground reference |
| Pin 31 | VDD — Positive power supply (2.5V to 6.0V) |
| Pin 32 | RB0/INT — PORTB bit 0 / External interrupt input |
| Pin 33 | RB1 — PORTB bit 1 |
| Pin 34 | RB2 — PORTB bit 2 |
| Pin 35 | RB3/PGM — PORTB bit 3 / Low-voltage programming input |
| Pin 36 | RB4 — PORTB bit 4 |
| Pin 37 | RB5 — PORTB bit 5 |
| Pin 38 | RB6/PGC — PORTB bit 6 / In-circuit debugger clock |
| Pin 39 | RB7/PGD — PORTB bit 7 / In-circuit debugger data |
| Pin 40 | MCLR/VPP — Master clear reset / Programming voltage input |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
Typical Applications
PIC16C64A-10/PT is suitable for 6 applications: Industrial Control Logic, Embedded Sensor Interface Module, Low-Cost Consumer Electronics, Motor Control Peripherals, Pre-Production Engineering Builds, Hobbyist and Educational Embedded Projects.
Industrial Control Logic
The PIC16C64A-10/PT fits industrial control logic boards because its 33 digital I/O pins and 10 MHz clock are sufficient for sequencing relays, reading contact inputs, and driving indicator LEDs at typical scan rates below 1 ms. The OTP memory is well-suited to fixed-function industrial controllers where firmware does not change after deployment, lowering unit cost versus flash equivalents. The 0C to +70C commercial temperature range covers indoor factory cabinets, and the 44-pin TQFP footprint enables compact control panel designs with standard SMT assembly.
Recommended
Embedded Sensor Interface Module
Sensor interface modules benefit from the PIC16C64A-10/PT's 128 bytes of RAM, 8-channel 8-bit ADC, and 3 timer modules for periodic sampling of temperature, pressure, or humidity transducers. The USART module transmits calibrated sensor data to a host controller over RS-232 or RS-485 at standard baud rates up to 19.2 kbps. The 2.5V to 6.0V supply range accepts common 3.3V and 5V sensor rails. For battery-powered sensor nodes, the PIC's low-power sleep modes extend operating life when paired with wake-on-timer interrupt logic.
Recommended
Low-Cost Consumer Electronics
The PIC16C64A-10/PT is well matched to cost-sensitive consumer products such as remote controls, small appliances, and toy electronics where OTP memory is acceptable and per-unit price is the dominant factor. Its 10 MHz instruction cycle provides ample performance for button-scanning, LED driving, and basic buzzer tone generation. The TQFP-44 package supports automated SMT lines common in consumer manufacturing. Designers frequently prototype on a PIC16F variant and migrate to the PIC16C64A for production to capture unit-cost savings once firmware is locked.
Recommended
Motor Control Peripherals
Small DC motor and stepper motor controllers use the PIC16C64A-10/PT because the 3 timer modules support PWM generation, quadrature encoder input, and fixed-frequency control loops up to 10 MHz. The 33 I/O pins drive half-bridges through external MOSFET drivers such as the IR2104, with the MCU handling direction logic and current sensing via its 8-bit ADC. The 2.5V to 6.0V supply directly accepts 5V motor bus rails. TQFP-44 packages fit inside compact motor housings.
Recommended
Pre-Production Engineering Builds
Engineering teams targeting a final flash-based PIC16F design often build pre-production pilot runs on the PIC16C64A-10/PT to validate assembly tooling, optical inspection, and test fixtures before committing to the higher-cost flash die. The PIC16C64A's identical 44-pin TQFP footprint and pinout to the PIC16F877A mean the same PCB layout supports both parts. Once firmware is finalized and pilot validation passes, production switches to the flash PIC16F877A-I/PT for field upgrade capability.
Recommended
Hobbyist and Educational Embedded Projects
The PIC16C64A-10/PT is suitable for hobbyist and university embedded-systems coursework where students learn mid-range PIC architecture, OTP programming workflow, and 44-pin TQFP soldering techniques. Its 3.5KB program memory accommodates moderate C or assembly projects such as digital clocks, LED matrix drivers, and simple communication stacks. The widespread availability on DigiKey and Mouser at low single-unit prices keeps lab budgets manageable. Educators often pair this part with the PIC16F877A so students can develop on flash and migrate to OTP for final demonstrations.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C64A-10/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C64A-04I/PT | PIC16C64A-04E/PT | PIC16C65B-10/PT | PIC16F877A-I/PT | PIC16C64A-04I/PQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (10x10) | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin TQFP (10x10) - same | 44-pin MQFP (10x10) - same footprint |
| Max Clock Frequency | 10 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz |
| Program Memory Type | OTP | OTP | OTP | OTP | Flash | OTP |
| Program Memory Size | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB to 7 KB | 14 KB (8K x 14) | 3.5 KB (2K x 14) |
| RAM | 128 bytes | 128 bytes | 128 bytes | 192 bytes | 368 bytes | 128 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Operating Temperature | 0C to +70C | -40C to +85C (Industrial) | -40C to +125C (Extended) | 0C to +70C | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Lifecycle Status | NRND | NRND | NRND | Active (recommended successor) | Active | NRND |
Key Differentiators
- Drop-in Microchip same-package upgrade to PIC16C65B doubles clock headroom (vs PIC16C65B-10/PT)
- Standard flash migration path with field upgrade capability (vs PIC16F877A-I/PT)
- Industrial temperature variant available in identical TQFP-44 package (vs PIC16C64A-04I/PT)
Design Notes
The PIC16C64A uses OTP (One-Time-Programmable) memory, so any firmware bug that gets programmed into the device is permanent - the part cannot be erased and re-used. Always validate firmware on a flash-based equivalent (PIC16F877A-I/PT) before committing to a PIC16C64A production run. Microchip explicitly marks this part NRND as of 2026-09-17, recommending the PIC16C65B or PIC16F877A for new designs.
The 44-pin TQFP (10x10 mm, 0.8 mm pitch) requires standard SMT reflow profiles. Place 0.1uF decoupling capacitors as close as possible to both VDD pins (pins 10 and 31) and route a solid ground plane to both VSS pins (pins 11 and 30). For designs migrating to the PIC16F877A-I/PT, the pinout is identical, so the same PCB layout supports both parts without rework.
Estimated: at 10 MHz with all 33 I/O pins unloaded, the PIC16C64A-10/PT draws approximately 5 mA to 15 mA from a 5V supply, dominated by clock tree and peripheral toggling. Enable the internal SLEEP mode (via the SLEEP instruction) for battery-powered sensor nodes to drop current below 5 uA. Connect the MCLR/VPP pin to VDD through a 10 kohm pull-up for normal operation or to a programming voltage for OTP programming.
For designs that switch the OSC1/OSC2 pins between crystal and external clock modes, keep the trace length under 10 mm and place a ground guard ring around the oscillator to reduce EMI coupling into adjacent analog inputs (RA0-RA5). When using the USART module (RC6/TX, RC7/RX) above 38.4 kbps, add a series damping resistor of 22 ohm to 33 ohm on the TX line if the cable length exceeds 0.5 meter.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (industrial/commercial MCU, not automotive). Lifecycle is NRND as of 2026-09-17 per Microchip product page.