PIC16LC711T-04E/SS - 8-Bit 4MHz OTP MCU, 1.75KB, 13 I/O | Microchip
MPN: PIC16LC711T-04E/SS ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.65 | $7.65 |
| 10 | $6.89 | $68.90 |
| 100 | $6.12 | $612.00 |
| 500 | $5.48 | $2,740.00 |
| 1,000 | $4.95 | $4,950.00 |
PIC16LC711T-04E/SS Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and I/O peripherals. The PIC16C71x family specifically adds an integrated 8-bit analog-to-digital converter (ADC), positioning these parts for mixed-signal embedded applications. Within Microchip's taxonomy, the PIC16LC711 belongs to the PIC mid-range core architecture (12/14-bit instruction width) used widely in industrial and consumer control designs.
Key features include 13 general-purpose digital I/O pins, 36 bytes of RAM, an internal 4 MHz oscillator option, and three timers (Timer0 8-bit with 8-bit prescaler, Timer1 16-bit with prescaler, Timer2 8-bit). The part also integrates brown-out detect/reset, a watchdog timer, PWM peripheral, and the previously noted 8-channel 8-bit ADC. The supply voltage range is 2.5V to 6V, and the device operates across an industrial temperature range of -40C to +125C (per the MicrochipUSA listing).
Typical applications span industrial sensor interfaces, appliance control modules, low-cost consumer electronics, and automotive body/comfort subsystems where integrated ADC and PWM simplify bill-of-materials. The wide operating voltage and temperature range support 5V industrial backplanes and automotive 12V-derived rails after pre-regulation.
When designing with this part, note the OTP program memory: firmware must be committed before chip shipment, making this part best suited to mature production designs rather than rapid prototyping (where a Flash variant such as the PIC16F716 is typically preferred).
Drop-in alternatives for PIC16LC711T-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 PIC16LC711T-04E/SS (same form factor and footprint) — differing in Package, ADC, Timers, Core Architecture, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LC711T-04E/SO
✅ Drop-In✓ In Stock
$4.32 / Unit
View Datasheet →PIC16LC711T-04I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LC711-04I/SO
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC16LC711-04/SO
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC16LC710T-04E/SS
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC16LC710-04/SS
✅ Drop-In✓ In Stock
$3.16 / Unit
View Datasheet →PIC16LC71-04/SO
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC16LC711T-04E/SS Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 8-Bit |
| Series | PIC 16C |
| Program Memory Size | 1.75 KB (1K x 14) |
| Program Memory Type | OTP (One-Time Programmable) |
| Maximum Clock Speed | 4 MHz |
| Supply Voltage Range | 2.5 V to 6 V |
| Number of I/O Pins | 13 |
| RAM Size | 36 bytes |
| ADC | 8 channels, 8-bit |
| Peripherals | Brown-out Detect/Reset, PWM, WDT |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Package | 20-SSOP |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +125 C |
| Packaging | Tape & Reel (T/R) |
| RoHS Status | unknown |
PIC16LC711T-04E/SS Pin Configuration
| Pin 1 | RA3/AN3 — Digital I/O / Analog input channel 3 |
| Pin 2 | RA4/T0CKI — Digital I/O (open-drain) / Timer0 clock input |
| Pin 3 | RA5/MCLR/VPP — Digital I/O / Master Clear (reset) / Programming voltage |
| Pin 4 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pin 5 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pin 6 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1/CLKIN — Oscillator crystal input / External clock input |
| Pin 9 | OSC2/CLKOUT — Oscillator crystal output / Clock output (Fosc/4) |
| Pin 10 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock input |
| Pin 11 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 PWM output |
| Pin 12 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| Pin 13 | RC3 — Digital I/O |
| Pin 14 | RC4 — Digital I/O |
| Pin 15 | RC5 — Digital I/O |
| Pin 16 | RC6 — Digital I/O |
| Pin 17 | RC7 — Digital I/O |
| Pin 18 | VSS — Ground reference (second VSS pin) |
| Pin 19 | VDD — Positive supply voltage |
| Pin 20 | RB7 — Digital I/O port B bit 7 |
Typical Applications
PIC16LC711T-04E/SS is suitable for 6 applications: Industrial Sensor Interface Module, Appliance Control Board, Automotive Body and Comfort Subsystem, HVAC Thermostat Control, Low-Cost Battery Charger Controller, Security and Access Control Panel.
Industrial Sensor Interface Module
The PIC16LC711T-04E/SS is well suited for industrial sensor interface modules that require multiple analog inputs and PWM outputs in a compact 20-pin SSOP package. The integrated 8-channel 8-bit ADC handles up to 8 sensor signals directly (temperature, pressure, flow) without an external ADC, reducing BOM cost and PCB area. The 4 MHz clock supports 1 MIPS instruction throughput adequate for sensor linearization and averaging loops running at 10-100 Hz sample rates. The industrial -40C to +125C temperature rating per the MicrochipUSA listing ensures reliable operation in factory-floor enclosures and outdoor cabinets. The 2.5V to 6V supply range accommodates 3.3V and 5V industrial backplanes. Pair with a PIC16F716-I/SO for new designs requiring Flash-based firmware updates.
Recommended
Appliance Control Board
White goods and small appliances commonly use the PIC16LC711T-04E/SS for keypad scanning, display driving, and motor PWM control in washing machines, dishwashers, and microwave ovens. The 13 I/O pins handle 4x4 matrix keypads plus LED indicators, while the integrated PWM peripheral drives valve solenoids and buzzer tones without additional timer ICs. The wide 2.5V to 6V supply range tolerates rectified 5V rails typical in appliance power supplies. OTP memory secures the firmware against unauthorized copying in consumer products. The 20-SSOP package fits compact appliance control boards behind front panels. Engineers should budget for last-time-buy inventory since the part is Obsolete.
Recommended
Automotive Body and Comfort Subsystem
Body controllers for window lifts, seat adjusters, mirror positioners, and interior lighting have historically used the PIC16LC711T-04E/SS because the Extended -40C to +125C temperature rating meets automotive cabin requirements and the integrated 8-bit ADC reads potentiometer position sensors for seat/mirror memory. The 4 MHz core executes PWM motor control loops at adequate resolution for these non-safety-critical functions. The wide 2.5V to 6V supply range accommodates 12V automotive battery rails after pre-regulation to 5V. The brown-out detect/reset peripheral prevents latch-up during cranking transients. Note: safety-critical automotive applications require newer AEC-Q100-qualified parts.
Recommended
HVAC Thermostat Control
Low-cost HVAC thermostats and zone controllers use the PIC16LC711T-04E/SS to read thermistor temperature via the integrated 8-bit ADC and drive HVAC damper motors and relays through PWM and digital I/O. The PIC mid-range core runs PID control loops at sub-second update rates suitable for residential thermal comfort applications. Brown-out detect/reset protects against HVAC control board brownouts during compressor inrush. The 1.75 KB OTP memory holds the firmware, while 36 bytes of RAM is sufficient for the PID state and key debounce buffers. The 20-SSOP footprint is compact enough for wall-mount thermostat enclosures.
Recommended
Low-Cost Battery Charger Controller
Lead-acid and NiMH battery charger controllers in uninterruptible power supplies and emergency lighting use the PIC16LC711T-04E/SS to monitor battery voltage and current via the 8-bit ADC and regulate charge current through PWM-driven MOSFET switches. The integrated brown-out detect/reset prevents deep-discharge lockup. The 36 bytes of RAM and 1.75 KB OTP memory are sufficient for CC/CV charge profile state machines with no external memory required. The wide 2.5V to 6V supply range operates directly from single-cell Li-ion (3.7V nominal) or 6V lead-acid float rails. Engineers should note OTP memory prohibits firmware field updates.
Recommended
Security and Access Control Panel
Alarm keypads, RFID readers, and door access control panels use the PIC16LC711T-04E/SS for keypad scanning, RFID tag decoding, and relay control of magnetic locks. The 13 I/O pins interface with 4x4 keypads plus status LEDs and lock relays directly without external I/O expanders. The integrated 8-bit ADC monitors backup battery voltage and tamper switch states. OTP memory prevents firmware reverse engineering in security applications. The PIC mid-range core runs at 4 MHz, sufficient for RFID bit-banging protocols at 125 kHz / 13.56 MHz carrier decoding. Use PIC16F716-I/SO for new designs to enable OTA firmware updates.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LC711T-04E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LC711T-04E/SO | PIC16LC711T-04I/SS | PIC16LC711-04I/SO | PIC16LC710T-04E/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SOIC (footprint differs) | 20-SSOP - same | 20-SOIC (footprint differs) | 20-SSOP - same |
| Program Memory | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 512 B OTP (smaller) |
| Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Number of I/O | 13 | 13 | 13 | 13 | 13 |
| ADC Channels | 8 channels, 8-bit | 8 channels, 8-bit | 8 channels, 8-bit | 8 channels, 8-bit | 4 channels, 8-bit |
| Operating Temperature | -40C to +125C (Extended) | -40C to +125C | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tray | Tape & Reel |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Key Differentiators
- Integrated 8-channel 8-bit ADC in a 20-pin SSOP (vs PIC16LC710T-04E/SS)
- Extended -40C to +125C temperature range (vs PIC16LC711T-04I/SS)
- Compact 20-SSOP footprint with full PIC mid-range peripheral set (vs PIC16LC711T-04E/SO)
- 1.75 KB OTP memory supports mature production firmware (vs PIC16LC710T-04E/SS)
Design Notes
The OTP (One-Time-Programmable) memory cannot be erased or rewritten. Engineers prototyping new firmware must use a Flash-based sibling (PIC16F716-I/SO) during development, then transfer the validated firmware to PIC16LC711T-04E/SS for production. A misprogrammed OTP part is permanently defective - budget for development spares and verify firmware checksum before committing to production programming.
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 19) and a bulk 10 uF tantalum or aluminum electrolytic capacitor on the supply rail. The PIC16LC711T-04E/SS is sensitive to supply noise during ADC conversions - inadequate decoupling causes ADC readings to vary by 2-4 LSB. Add a ferrite bead in series with the supply if the ADC input shares the rail with switching regulators or motor drivers.
Pin 5 (RA5/MCLR/VPP) is shared between digital I/O, external reset, and programming voltage input. When using RA5 as a digital input, ensure the MCLR function is disabled in the configuration word, and avoid driving this pin low during normal operation or the device will reset. For programming, this pin receives the 13V VPP voltage - use a current-limiting resistor if the pin is also used as an input in the application circuit.
At 4 MHz clock and 5V supply, the PIC16LC711T-04E/SS typical supply current is approximately 2 mA active and 1 uA sleep. At maximum clock and supply voltage, power dissipation is around 20 mW, well within the 20-SSOP package rating of 800 mW at 25C ambient. The Extended -40C to +125C rating allows deployment in industrial enclosures without thermal management. Derate supply current at higher temperatures by approximately 0.5%/C above 70C.
Route the analog input traces (RA0-RA3, RA5) away from digital switching signals and PWM outputs (CCP1, CCP2) to minimize ADC crosstalk. Place a ground pour under the analog section and use a single-point ground connection at the VSS pin to avoid ground loops in ADC readings. For the 20-SSOP package, maintain at least 0.2 mm trace clearance between analog and digital signals, and consider a guard ring around sensitive analog inputs.
Compliance Information
Compliance information not explicitly stated in the verified web data. The part uses legacy PIC16C OTP technology and is marked Obsolete per Microchip lifecycle records. RoHS and REACH status should be verified with Microchip for current production (none ongoing) or with distributor stock for legacy inventory.
