PIC16LC711T-04E/SO - 4MHz 8-bit MCU 1.75KB OTP 18-SOIC | Microchip
MPN: PIC16LC711T-04E/SO β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.42 | $6.42 |
| 10 | $5.85 | $58.50 |
| 100 | $5.31 | $531.00 |
| 500 | $4.79 | $2,395.00 |
| 1,000 | $4.32 | $4,320.00 |
PIC16LC711T-04E/SO Overview
An 8-bit PIC microcontroller is a compact, fully-static CMOS processor core with a RISC-like instruction set tuned for deterministic real-time control. PIC microcontrollers sit within the broader hierarchy of microcontrollers (MCU) -> embedded processor -> semiconductor IC. The PIC16C71X mid-range family specifically added integrated A/D conversion to the classic PIC16 architecture, removing the need for an external ADC in many sensor-interface designs. The 'LC' prefix indicates a low-voltage CMOS variant that supports a wide 2.5 V to 5.5 V operating range, making it appropriate for battery-backed and 3.3 V mixed-signal designs.
Key features include the on-chip 8-bit ADC with up to 4 input channels, a programmable Watchdog Timer with its own on-chip RC oscillator for reliable operation, an 8-bit Timer0 with 8-bit prescaler, a 16-bit Timer1, and an 8-bit Timer2. The device also offers Power-on Reset, Brown-out Reset, and a wide operating temperature range. Peripherals include a USART/SCI for asynchronous serial communication on compatible variants and a synchronous serial port (SSP) for SPI/I2C master or slave transactions.
The architecture combines a Harvard bus separated internally (program and data memory have separate buses), CPU's 14-bit wide instruction word with 8-bit data path, and CMOS process technology. This combination yields predictable throughput - one instruction per instruction cycle (except branches) - which simplifies hard-real-time scheduling. The integrated ADC and timers reduce external component count, allowing compact PCB layouts in cost-sensitive industrial and consumer products.
Typical applications include industrial sensor signal conditioning with on-chip ADC, low-power battery-operated remote controls, automotive body and interior subsystems (qualified variants), appliance control panels, and simple closed-loop PID-style controllers. The wide supply range and integrated peripherals also suit uninterruptible power supply housekeeping and HVAC damper/valve control modules. The 'E' suffix denotes the enhanced (-40 C to +125 C) operating temperature grade suitable for industrial environments.
When designing with this part, ensure VDD decoupling with a 0.1 uF ceramic capacitor placed within 5 mm of the VDD pin, plus a bulk tantalum or electrolytic cap if the supply has high ripple. A current-limiting series resistor on the MCLR pin or a dedicated reset supervisor is recommended in noisy industrial environments. The OTP program memory cannot be reprogrammed, so verify firmware thoroughly before production programming.
This page synthesizes distributor pricing, drop-in alternatives from Microchip's PIC16C71X family, and practical design notes that are not aggregated in any single manufacturer document.
Drop-in alternatives for PIC16LC711T-04E/SO 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 PIC16LC711T-04E/SO (same form factor and footprint) β differing in ADC, Package, RoHS Status, Program Memory Size, Timers.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16LC711-04E/SO
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16LC711T-04I/SO
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16LC711T-04/SO
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16C711-04E/SO
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$1.71 / Unit
View Datasheet βPIC16F716-I/SO
β Drop-Inπ Reference alternative (not in catalog)
PIC16LC711T-04E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit (Harvard, RISC) |
| Family | PIC16C71X (mid-range) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 1.75 KB (1K x 14) |
| RAM | 68 bytes |
| Data EEPROM | Not present (OTP variant, no EEPROM) |
| Maximum Clock Frequency | 4 MHz |
| Instruction Cycle | 4 clock periods (1 MIPS at 4 MHz) |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| I/O Pins | 13 |
| ADC | 8-bit, up to 4 channels |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Brown-out Reset | Yes |
| Power-on Reset | Yes |
| Operating Temperature Range | -40 C to +125 C (Enhanced 'E' grade) |
| Package | 18-pin SOIC (SO-18, 0.295 inch / 7.50 mm body width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 (unlimited floor life at <30 C / 85% RH) |
PIC16LC711T-04E/SO Pin Configuration
| Pin 1 | MCLR/VPP β Master Clear (Reset) input / Programming voltage input |
| Pin 2 | RA0/AN0 β PORTA bit 0 / Analog input channel 0 |
| Pin 3 | RA1/AN1 β PORTA bit 1 / Analog input channel 1 |
| Pin 4 | RA2/AN2 β PORTA bit 2 / Analog input channel 2 |
| Pin 5 | RA3/AN3/VREF β PORTA bit 3 / Analog input channel 3 / ADC voltage reference |
| Pin 6 | RA4/T0CKI β PORTA bit 4 / Timer0 clock input (open-drain) |
| Pin 7 | RA5/SS/AN4 β PORTA bit 5 / Slave Select for SPI / Analog input channel 4 |
| Pin 8 | OSC1/CLKIN β Oscillator crystal input / external clock input |
| Pin 9 | OSC2/CLKOUT β Oscillator crystal output / clock output (Fosc/4) |
| Pin 10 | RC0 β PORTC bit 0 (also T1OSO/T1CKI on some variants) |
| Pin 11 | RC1 β PORTC bit 1 (also T1OSI on some variants) |
| Pin 12 | RC2 β PORTC bit 2 |
| Pin 13 | RC3 β PORTC bit 3 |
| Pin 14 | RC4 β PORTC bit 4 |
| Pin 15 | RC5 β PORTC bit 5 |
| Pin 16 | RC6 β PORTC bit 6 |
| Pin 17 | RC7 β PORTC bit 7 |
| Pin 18 | VSS β Ground reference |
Typical Applications
PIC16LC711T-04E/SO is suitable for 6 applications: Industrial Sensor Signal Conditioning, Battery-Operated Remote Control, Appliance Control Panel, Automotive Body and Interior Subsystem, HVAC Damper and Valve Actuator, Uninterruptible Power Supply Housekeeping Controller.
Industrial Sensor Signal Conditioning
The PIC16LC711T-04E/SO's integrated 8-bit ADC with 4 input channels makes it a strong fit for industrial sensor signal conditioning modules that read 4-20 mA loop signals, thermistor bridges, or potentiometer positions. The MCU samples the analog inputs, applies linearization in firmware, and drives a 4-20 mA output through a PWM-driven op-amp circuit. Its 2.5-5.5 V supply range accommodates both 3.3 V and 24 V-loop-derived rails. The 13 digital I/O also drive status indicators or HMI keypads alongside the analog front end.
Recommended
Battery-Operated Remote Control
The 'LC' low-voltage CMOS process and 2.5 V minimum VDD let the PIC16LC711T-04E/SO operate directly from two AA cells across their full discharge curve. The integrated timers (Timer0/8-bit, Timer2/8-bit) generate accurate IR carrier frequencies for consumer remote controls, while the 8-bit ADC can read battery voltage for low-battery indication. The wide operating temperature also supports outdoor remote controls and key fobs. Low-cost OTP program memory fits high-volume consumer products where firmware is fixed.
Recommended
Appliance Control Panel
In white-goods control panels such as washing machines, dishwashers, and microwave ovens, the PIC16LC711T-04E/SO scans a matrix keypad, drives a 7-segment or character LCD, reads temperature sensors via its ADC, and switches TRIAC-driven loads through optoisolators. The 13 I/O pins are sufficient for 4x4 keypads plus 7-segment digit drivers, and the integrated timers support PWM-based soft-start of motor loads. The -40 C to +125 C enhanced temperature grade handles the thermal environment inside an appliance chassis.
Recommended
Automotive Body and Interior Subsystem
The PIC16LC711T-04E/SO's enhanced -40 C to +125 C temperature range and integrated peripherals support automotive body controllers such as door modules, mirror controllers, seat positioners, and lighting dimmers. The 8-bit ADC reads potentiometers or Hall sensors, while Timer2 generates the PWM dimming signal for interior LED lighting. Note: for AEC-Q100 qualified automotive designs, Microchip recommends the PIC16F716 or PIC16F1936 with explicit automotive grade ordering suffixes.
Recommended
HVAC Damper and Valve Actuator
The PIC16LC711T-04E/SO's integrated ADC and PWM timers fit low-cost HVAC damper and valve actuator designs that read a setpoint signal, drive a brushless DC motor via PWM, and report position back to the building management system. The wide 2.5-5.5 V supply accommodates 24 VAC-derived rails after rectification, and the brown-out reset prevents erratic operation during brown-outs common on long HVAC wiring runs. The on-chip watchdog timer ensures the actuator returns to a safe state on firmware lockup.
Recommended
Uninterruptible Power Supply Housekeeping Controller
In low-power UPS front-end housekeeping modules, the PIC16LC711T-04E/SO monitors battery voltage and current via its 8-bit ADC, drives status indicator LEDs, controls a buzzer for alarm conditions, and toggles a relay for mains/battery switching. The integrated watchdog timer ensures recovery from firmware faults, while the wide operating temperature range supports installation in unconditioned utility closets. OTP program memory is appropriate since UPS housekeeping firmware rarely changes once qualified.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LC711T-04E/SO β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LC711-04E/SO | PIC16LC711T-04I/SO | PIC16LC711T-04/SO | PIC16C711-04E/SO | PIC16F716-I/SO |
|---|---|---|---|---|---|---|
| Package | 18-SOIC | 18-SOIC | 18-SOIC | 18-SOIC | 18-SOIC | 18-SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB EPROM (windowed) | 2 KB Flash |
| RAM | 68 bytes | 68 bytes | 68 bytes | 68 bytes | 68 bytes | 128 bytes |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| ADC | 8-bit, 4-ch | 8-bit, 4-ch | 8-bit, 4-ch | 8-bit, 4-ch | 8-bit, 4-ch | 8-bit, 4-ch (improved) |
| Operating Temperature | -40 C to +125 C (E) | -40 C to +125 C (E) | -40 C to +85 C (I) | 0 C to +70 C | -40 C to +125 C (E) | -40 C to +85 C (I) |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 3.0 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 |
Key Differentiators
- Wide 2.5-5.5 V supply range vs EPROM 'C' variant (vs PIC16C711-04E/SO)
- Enhanced -40 C to +125 C temperature grade (vs PIC16LC711T-04I/SO)
- OTP-only vs flash reprogrammability (vs PIC16F716-I/SO)
Design Notes
Place a 0.1 uF decoupling capacitor within 5 mm of the VDD pin (pin 17 on 18-SOIC) and a 10 uF bulk capacitor (tantalum or low-ESR ceramic) at the supply entry point. The PIC16LC71X core draws brief current spikes during oscillator startup and ADC conversions, and undersized decoupling causes ADC LSB jitter. For battery-powered designs, the LC variant's 2.5 V minimum VDD supports operation down to two nearly-depleted AA cells.
Keep the analog input traces (RA0-RA3, RA5) short and routed away from digital switching lines such as the OSC2 clock output and PORTB driver traces. The integrated ADC has limited input filtering; nearby digital switching injects noise into the ADC result. Add a small RC filter (1 kohm + 100 pF) at each analog input when the source impedance exceeds 2.5 kohm - the ADC's sample-and-hold specification requires source impedance below 10 kohm for full accuracy.
The OTP program memory cannot be erased or rewritten. Verify the entire firmware image in a windowed PIC16C711 or PIC16F716 emulation part before committing to OTP programming. Also note that pin 1 is MCLR/VPP - leaving this pin floating causes intermittent resets in noisy environments; always tie it to VDD through a 10 kohm resistor (or to a reset supervisor output) per Microchip's recommended reset circuit. Brown-out reset must be enabled in the configuration word for reliable operation across the 2.5-5.5 V supply range.
Compliance Information
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified - for AEC-Q100 automotive applications use the PIC16F716 or PIC16F1936 with explicit automotive grade ordering suffix. Halogen-free status not stated in verified sources.
