PIC16C77T-10E/L - 10MHz 8-Bit OTP MCU 14KB EPROM 44-PLCC | Microchip
MPN: PIC16C77T-10E/L ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.42 | $18.42 |
| 10 | $16.55 | $165.50 |
| 100 | $14.83 | $1,483.00 |
| 500 | $13.21 | $6,605.00 |
| 1,000 | $11.94 | $11,940.00 |
PIC16C77T-10E/L Overview
What is an OTP microcontroller? An OTP (One-Time-Programmable) microcontroller is a microcontroller whose on-chip program memory can be written only once after manufacture, using a standard EPROM programming algorithm. It sits within the broader hierarchy: microcontroller -> embedded controller -> semiconductor IC. OTP parts occupy the middle ground between mask-ROM (cheapest, factory-programmed) and Flash (rewritable, more expensive) variants, making them a cost-effective choice for mature, stable firmware designs in volume production.
Key features include 192 bytes of RAM, 33 digital I/O lines distributed across multiple ports, an integrated multi-channel 8-bit Analog-to-Digital Converter (ADC), two Capture/Compare/PWM modules, a USART serial port, and a synchronous serial port (SSP) supporting SPI and I2C. The Harvard RISC architecture executes most instructions in a single 200ns cycle at 10MHz, and the 14-bit instruction word delivers compact, deterministic code for embedded control loops.
Typical applications include industrial process control, automotive body and chassis electronics, motor control, smart sensors, and consumer appliances requiring 5V-tolerant digital I/O with on-chip analog conversion. The combination of extended temperature range and OTP memory makes this device particularly suitable for cost-sensitive, high-reliability designs where firmware is locked at production time.
When designing with the PIC16C77T-10E/L, ensure the MCLR reset circuit, oscillator configuration, and ICSP programming pins are routed to accessible test points, since OTP parts cannot be re-flashed for firmware corrections. The 44-PLCC footprint provides generous ground and power pin assignments that simplify PCB layout for mixed-signal designs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16C77T-10E/L — 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 PIC16C77T-10E/L (same form factor and footprint) — differing in Program Memory Size, RAM Size, Timers, Core Architecture, Program Memory Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C77T-10/L
✅ Drop-In✓ In Stock
$7.1 / Unit
View Datasheet →PIC16C77T-04E/L
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C77T-10E/PQ
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16C77-10E/L
✅ Drop-In✓ In Stock
$9.85 / Unit
View Datasheet →PIC16C77-20I/L
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC16C77-10I/L
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C774T/L
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$7.15 / Unit
View Datasheet →PIC16C77T-10E/L Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Family | PIC16C7X mid-range |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 14 KB (8K x 14) |
| RAM Size | 192 bytes |
| Maximum Clock Speed | 10 MHz |
| Instruction Cycle | 200 ns at 10 MHz |
| Supply Voltage (Vdd) | 4 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (Extended, 'E' suffix) |
| I/O Pins | 33 digital I/O |
| ADC | 8-bit, multi-channel integrated |
| Timers | Timer0, Timer1, Timer2 (3 x 8-bit) |
| Capture/Compare/PWM | 2 CCP modules |
| Serial Interfaces | USART (SCI), SSP (SPI / I2C) |
| Package Type | 44-pin PLCC (J-Lead, 16.59 x 16.59 mm) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC16C77T-10E/L Pin Configuration
| Pin 1 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC negative reference |
| Pin 2 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC positive reference |
| Pin 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 4 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Pin 5 | RE0/RD/AN5 — PORTE bit 0 / Parallel slave port read / Analog input 5 |
| Pin 6 | RE1/WR/AN6 — PORTE bit 1 / Parallel slave port write / Analog input 6 |
| Pin 7 | RE2/CS/AN7 — PORTE bit 2 / Parallel slave port chip select / Analog input 7 |
| Pin 8 | VDD — Positive supply voltage (5V nominal) |
| Pin 9 | OSC2/CLKOUT — Oscillator output / Clock output |
| Pin 10 | OSC1/CLKIN — Oscillator input / External clock input |
| Pin 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 output |
| Pin 13 | RC2/CCP1 — PORTC bit 2 / CCP1 output |
| Pin 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 15 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| Pin 16 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| Pin 17 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| Pin 18 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| Pin 19 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 20 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 21 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Pin 22 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Pin 23 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| Pin 24 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| Pin 25 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| Pin 26 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VSS — Ground reference |
| Pin 29 | RF0/AN8 — PORTF bit 0 / Analog input 8 |
| Pin 30 | RF1/AN9 — PORTF bit 1 / Analog input 9 |
| Pin 31 | RF2/AN10 — PORTF bit 2 / Analog input 10 |
| Pin 32 | RF3/AN11 — PORTF bit 3 / Analog input 11 |
| Pin 33 | RF4 — PORTF bit 4 (digital only) |
| Pin 34 | RF5 — PORTF bit 5 (digital only) |
| Pin 35 | RF6 — PORTF bit 6 (digital only) |
| Pin 36 | RF7 — PORTF bit 7 (digital only) |
| Pin 37 | RB0/INT — PORTB bit 0 / External interrupt |
| Pin 38 | RB1 — PORTB bit 1 |
| Pin 39 | RB2 — PORTB bit 2 |
| Pin 40 | RB3 — PORTB bit 3 |
| Pin 41 | RB4 — PORTB bit 4 |
| Pin 42 | RB5 — PORTB bit 5 |
| Pin 43 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 44 | RB7/PGD — PORTB bit 7 / ICSP data |
Typical Applications
PIC16C77T-10E/L is suitable for 6 applications: Industrial Process Control, Automotive Body Electronics, Motor Control and PWM Drivers, Smart Sensor Signal Conditioning, Consumer Appliance Control, HVAC and Building Automation.
Industrial Process Control
The PIC16C77T-10E/L is well suited to industrial process controllers because its integrated 8-bit ADC samples sensor outputs directly while the USART links to a host PLC or HMI. The extended -40C to +125C temperature range handles factory-floor thermal extremes, and the 14KB OTP program memory locks calibration constants at production to prevent field tampering. Designers can implement PID loops on the two CCP modules with deterministic 200ns instruction timing, giving sub-millisecond control response for valve and heater regulation in 24V industrial environments.
Recommended
Automotive Body Electronics
Body and chassis modules such as seat controllers, mirror adjusters, and lighting drivers benefit from the PIC16C77T-10E/L's extended -40C to +125C operating range and 5V-tolerant digital I/O that interfaces directly with automotive sensor buses. The 33 I/O pins drive relay coils and read switches without external buffers, while the SSP supports SPI communication with peripheral sensor ICs. OTP memory secures the final firmware revision for the vehicle's production lifetime, eliminating field-reprogramming risk. Note that safety-critical ADAS or airbag systems require AEC-Q100-qualified parts instead.
Recommended
Motor Control and PWM Drivers
The PIC16C77T-10E/L drives brushed DC and stepper motors via its two Capture/Compare/PWM modules, generating complementary PWM channels up to the 10MHz system clock. With 200ns instruction cycle, the firmware can implement field-oriented control loops or trapezoidal commutation in software without an external DSP. The 8-bit ADC samples motor current and back-EMF for closed-loop speed regulation, while the 33 digital I/O drive H-bridge gate drivers and read Hall-effect sensors. OTP memory ensures the motor calibration profile is locked at production.
Recommended
Smart Sensor Signal Conditioning
Sensor transmitters and 4-20mA loop-powered instruments use the PIC16C77T-10E/L to digitize analog inputs via the integrated 8-bit ADC and transmit readings over the USART or SSP serial interface. The 5V supply and low-power CMOS design suit battery and loop-powered installations, while the extended temperature range handles outdoor and process-plant environments. OTP memory stores sensor linearization coefficients permanently, eliminating field-trim procedures. Combined with the 192-byte RAM and 14KB program space, the device handles linearization, scaling, and protocol framing for HART or Modbus sensor nodes.
Recommended
Consumer Appliance Control
White-goods and small appliances such as washing machines, dishwashers, and microwave ovens leverage the PIC16C77T-10E/L for main control board functions. The 14KB OTP memory stores the user-interface state machine and motor profiles, while the integrated ADC reads temperature sensors and water-level switches. Extended temperature operation tolerates the heat inside appliance enclosures, and 33 I/O pins drive triac gates, relays, LED indicators, and keypads directly. OTP programming locks the firmware at production to prevent unauthorized field modifications.
Recommended
HVAC and Building Automation
Heating, ventilation, and air-conditioning controllers use the PIC16C77T-10E/L to read multiple temperature zones, drive damper actuators, and communicate with the building management system over RS-485 via the integrated USART. The extended temperature rating covers rooftop and mechanical-room installations, while the 14KB OTP memory stores the control algorithm and zone calibration data permanently. The two CCP modules generate PWM outputs for variable-speed fans, and the 8-bit ADC monitors thermistor sensors across the building zones.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C77T-10E/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C77T-10/L | PIC16C77T-04E/L | PIC16C77-10E/L | PIC16C77-20I/L | PIC16C774T/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PLCC-44 | PLCC-44 - same | PLCC-44 - same | PLCC-44 - same | PLCC-44 - same | PLCC-44 - same |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 4 MHz | 10 MHz | 20 MHz | 10 MHz |
| Program Memory | 14 KB OTP | 14 KB OTP | 14 KB OTP | 14 KB OTP | 14 KB OTP | 14 KB OTP |
| Operating Temperature | -40C to +125C | 0C to +70C | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +125C |
| Supply Voltage | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V |
| ADC Resolution | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit | 12-bit |
| Packaging Format | Tape & Reel | Tape & Reel | Tape & Reel | Tube | Tube | Tape & Reel |
Key Differentiators
- Extended -40C to +125C temperature range with PLCC-44 footprint (vs PIC16C77T-10/L)
- Higher 10 MHz clock with extended temperature range (vs PIC16C77T-04E/L)
- Higher 10 MHz clock speed at extended temperature (vs PIC16C77-20I/L)
Design Notes
Estimated: At 10MHz clock with 5V supply, the PIC16C77T-10E/L draws approximately 10-15mA active current. Designers must ensure the 5V regulator provides at least 50mA headroom for I/O pin sourcing. The MCLR reset pin requires a 10kohm pull-up to Vdd and a 100nF decoupling capacitor to ground - omitting these causes intermittent reset failures during power-up. ICSP pins RB6/PGC and RB7/PGD must be routed to accessible test points since OTP memory cannot be re-flashed.
Place 100nF decoupling capacitors on every Vdd/Vss pin pair (the PIC16C77T-10E/L has two Vdd pins and two Vss pins) within 5mm of the package. Add a 10uF bulk tantalum or ceramic capacitor at the board's 5V supply input. The PLCC-44 socket footprint should be used during prototyping to allow device swap. Keep analog input traces (AN0-AN11) short and away from digital switching signals to minimize ADC noise pickup; a ground pour around the analog traces further improves conversion accuracy.
The 8-bit integrated ADC achieves best accuracy when the source impedance is below 2.5kohm - higher impedance causes ADC sampling errors due to the 25pA internal hold capacitor. Use op-amp buffers (e.g., MCP6002) on high-impedance sensor signals. For the USART, keep TX/RX traces short and add series termination resistors (100 ohms) when driving cables longer than 20cm. The SPI bus should run at no more than 1MHz when other peripherals share the bus to avoid timing violations.
Estimated: At maximum 10MHz clock and full I/O toggle, the PIC16C77T-10E/L dissipates approximately 75mW, well within the 1W PLCC-44 thermal limit (theta_JA approximately 50 C/W). At the extended +125C junction limit, sustained operation above ambient +85C requires either derating clock frequency or external cooling. In sealed enclosures with no airflow, mount the device near the PCB edge or add thermal vias under the exposed pad area to improve heat dissipation.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - select AEC-Q100-qualified parts for safety-critical automotive. Halogen-free status not explicitly stated in verified data.
