PIC16F722-I/SS - 8-bit 20MHz MCU, 3.5KB Flash, 28-SSOP | Microchip
MPN: PIC16F722-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.04 | $2.04 |
| 10 | $1.78 | $17.80 |
| 100 | $1.55 | $155.00 |
| 500 | $1.39 | $695.00 |
| 1,000 | $1.24 | $1,240.00 |
PIC16F722-I/SS Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates an 8-bit CPU, Flash program memory, RAM, EEPROM, and programmable peripherals into one device. Mid-range PIC16 MCUs use a RISC Harvard architecture with 35 single-word instructions, supporting 200 ns instruction execution at 20 MHz. They sit between 8-bit baseline (PIC10/12/16F) and 16-bit/32-bit MCU tiers in Microchip's portfolio.
Key specifications include 128 bytes of data EEPROM and 192 bytes of RAM, up to 18 I/O pins, an internal 16 MHz oscillator (factory calibrated to +/-1%), an 8-channel 10-bit Analog-to-Digital Converter (ADC), multiple timers (Timer0, Timer1, Timer2), enhanced PWM/CCP modules, and a master synchronous serial port (MSSP) supporting SPI and I2C. The nanoWatt XLP technology delivers typical active current under 220 uA/MHz at 2V and sleep currents below 50 nA with watchdog disabled.
The device operates from 2.5 V to 5.5 V across -40C to +85C industrial temperature and offers in-circuit serial programming (ICSP) plus in-circuit debugging via two programming/debug pins. Master Clear Reset, brown-out detection, and programmable code protection support production-grade reliability.
Typical applications include ultra-low-power sensor nodes, remote controls, battery-backed instrumentation, household appliances, lighting controls, and IoT edge nodes. The 10-bit ADC and I2C/SPI peripherals make the part well suited to interfaces for sensors and small displays.
Designers should route decoupling capacitors close to VDD/VSS pins, keep analog and digital ground returns short, and respect the ICSP pin layout if a debug header is needed. For engineering projects sourcing this part, distributors in the Site MPN list help builders quickly orient pin compatibility with -E and -A temperature siblings.
This page aggregates datasheet values, distributor pricing, SSOP pinout, and verified drop-in alternatives not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F722-I/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 PIC16F722-I/SS (same form factor and footprint) — differing in ADC, I/O Pins, Package, Timers, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F722-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F720-I/SS
✅ Drop-In✓ In Stock
$0.82 / Unit
View Datasheet →PIC16F721-I/SO
✅ Drop-In✓ In Stock
$0.92 / Unit
View Datasheet →PIC16F690-I/SS
✅ Drop-In✓ In Stock
$1.41 / Unit
View Datasheet →PIC16F716-I/SO
✅ Drop-In✓ In Stock
$1.13 / Unit
View Datasheet →PIC16F722-I/SS Maximum Ratings & Electrical Characteristics
| Program Memory Type | Flash |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| Data EEPROM | 128 bytes |
| Data RAM | 192 bytes |
| CPU Core | PIC16 8-bit RISC, mid-range |
| Maximum CPU Clock | 20 MHz (200 ns instruction cycle) |
| Operating Voltage | 2.5 V to 5.5 V |
| I/O Pins | up to 18 |
| ADC | 8-channel, 10-bit |
| Timers | Timer0, Timer1, Timer2 |
| PWM / CCP | Enhanced Capture/Compare/PWM |
| Communication | MSSP (SPI / I2C), Enhanced USART |
| Internal Oscillator | 16 MHz, factory calibrated |
| Low-Power Technology | nanoWatt XLP |
| Brown-out Reset | Yes (BOR) |
| Programming / Debug | ICSP via 2-wire interface |
| Operating Temperature | -40C to +85C (industrial, -I suffix) |
| Package | 28-pin SSOP (5.30 mm body, 0.65 mm pitch) |
| RoHS Status | Compliant (Pb-free, microchip -SS package) |
PIC16F722-I/SS Pin Configuration
| Pin 1 | MCLR/VPP — Master Clear (Reset) input or programming voltage |
| Pin 2 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Pin 4 | RA2/AN2 — PORTA bit 2 / Analog input channel 2 |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / Positive voltage reference |
| Pin 6 | RA4/AN4 — PORTA bit 4 / Analog input 4 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply (2.5 V to 5.5 V) |
| Pin 9 | RA7/OSC1/CLKIN — PORTA bit 7 / Oscillator input / External clock |
| Pin 10 | RA6/OSC2/CLKOUT — PORTA bit 6 / Oscillator output |
| Pin 11 | RC0 — PORTC bit 0 / T1OSO / T1CKI |
| Pin 12 | RC1 — PORTC bit 1 / CCP2 |
| Pin 13 | RC2/CCP1 — PORTC bit 2 / Enhanced CCP1 output |
| Pin 14 | RC3 — PORTC bit 3 / SCL (I2C clock) / SPI clock |
| Pin 15 | RC4 — PORTC bit 4 / SDA (I2C data) / SDI |
| Pin 16 | RC5 — PORTC bit 5 / SDO (SPI data) |
| Pin 17 | RC6 — PORTC bit 6 / TX (USART) |
| Pin 18 | RC7 — PORTC bit 7 / RX (USART) |
| Pin 19 | VDD — Positive supply (2.5 V to 5.5 V, second pin) |
| Pin 20 | VSS — Ground (second pin) |
| Pin 21 | RB0/INT — PORTB bit 0 / External interrupt |
| Pin 22 | RB1 — PORTB bit 1 |
| Pin 23 | RB2 — PORTB bit 2 |
| Pin 24 | RB3/PGM — PORTB bit 3 / ICSP programming data |
| Pin 25 | RB4 — PORTB bit 4 |
| Pin 26 | RB5 — PORTB bit 5 |
| Pin 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 28 | RB7/PGD — PORTB bit 7 / ICSP data |
Typical Applications
PIC16F722-I/SS is suitable for 7 applications: Battery-Powered IoT Sensor Nodes, Remote Control Transmitters, Household Appliance Controls, Industrial Sensor Interface Modules, Lighting Control and LED Drivers, Consumer Audio Accessories (Volume, Mute, EQ), Medical Disposables and Wellness Devices.
Battery-Powered IoT Sensor Nodes
The PIC16F722-I/SS is ideal for battery-powered wireless sensor nodes thanks to its nanoWatt XLP architecture that drops below 50 nA in sleep with watchdog disabled and roughly 220 uA/MHz at 2 V active. Its 2.5 V to 5.5 V supply range works with single-cell Li coin, two-AA alkaline, or 3.3 V coin-cell chemistries. The 8-channel 10-bit ADC and MSSP (I2C/SPI) ports allow direct connection of environmental sensors and an I2C temperature/humidity sensor with wake-on-interrupt transitions into a low-duty-cycle transmit cycle. The 18 I/O pins are sufficient to drive indicator LEDs, an interrupt-driven ambient-light sensor, and one UART debug port. Compared with a switching regulator, the PIC's linear-mode voltage operation and ECO sleep modes extend battery life by 4-10x over 8-bit MCUs without XLP. Recommended companion: ATSAMD21E15A-AU for higher-tier ARM Cortex-M0+ migration, PIC16F721-I/SS for a closely related node.
Recommended
Remote Control Transmitters
Remote controls for TV, projector screen, lighting or garage-door applications demand microwatt quiescent currents, fast wake, and reliable I/O. The PIC16F722-I/SS fits because its nanoWatt XLP sleep (under 50 nA with WDT off and around 0.5 uA with WDT on) lets a remote run years on a single pair of AAs, while the 4 MHz fast wake-up plus 20 MHz core keeps button-press latency below 20 ms. PWM modules cleanly drive IR LED current on a single pin, and 18 I/Os accommodate key-matrix scanning up to 6x6 matrix with no external decoder. The 2.5-5.5 V range tolerates mediocre-quality battery drop. EUSART and MSSP handle bicolor indicator LED status and opt-in firmware upgrade, respectively. Compared with discrete remote-control ICs, this MCU can serve a full RF-blinker over the same CPU. Recommended companions: PIC16F690-I/SS for higher-temperature garage and PIC16F716-I/SO for legacy remote-control sockets.
Recommended
Household Appliance Controls
The PIC16F722-I/SS is well suited to low-end household appliance controllers (coffee makers, microwaves, fans, dishwashers) where 3.5 KB of Flash holds typical user-interface and PWM firmware. The 28-SSOP package fits on a single-sided sub-board, and Brown-Out Reset plus the Watchdog timer keep the MCU recoverable from brown-outs without external supervisor. The 8-channel 10-bit ADC reads thermistor, line-voltage-derived feedback and user-rotary inputs, while the enhanced PWM modules control triac-driven mains loads or low-side MOSFET bridges. The -40C to +85C industrial temperature range covers kitchen counter, closet and laundry-room environments. The EUSART bridges to the appliance main-board or a Bluetooth Low-Energy module for in-app feedback; MSSP interfaces EEPROM logging memory without external glue logic. Recommended companions: PIC16F722-E/SS for harsher garage-attic appliances, PIC16F690-I/SS for HVAC fan and compressor control.
Recommended
Industrial Sensor Interface Modules
Industrial 4-20 mA loop-powered signal-conditioning and front-end modules benefit from the PIC16F722-I/SS's combination of low supply range (2.5-5.5 V), 10-bit ADC accuracy, and nanoWatt XLP power profile. With its 28-SSOP package the device fits in a 22 x 11 mm module footprint, and its MSSP peripheral drives I2C digital temperature/humidity compensation. The 18 I/O pins are enough to expose I2C, SPI, UART and 3-4 control outputs simultaneously. Compared with discrete op-amp front ends plus a counter IC, this MCU handles linearisation and HART-on-UART pre-stage in firmware while keeping BOM count under 15. Brown-Out Reset and Watchdog improve robustness against industrial voltage spikes. Recommended companions: PIC16F628AT-I/SO for older industrial sites with code-size constraints, PIC16F690-I/SS for diagnostic-rich variants.
Recommended
Lighting Control and LED Drivers
For PWM-driven dimmers, occupancy sensor heads, and color-mixing LED controllers, the PIC16F722-I/SS combines three independent Enhanced PWM channels with 10-bit resolution to drive high-frequency MOSFETs or LED drivers. The 20 MHz CPU handles DMX-512A or DALI command interpretation in firmware at modest resources. Its nanoWatt XLP sleep mode cuts power consumption below 50 nA during button-idle or off-state, helping lighting fixtures meet EuPs design targets. ADC inputs feed back from a current-sensing resistor for closed-loop constant-current LED control. 28-SSOP is thermally friendly because most lighting PCB dissipates low power, and the package's 0.65 mm pitch accommodates dense interconnect patterns. Recommended companions: PIC16F720-I/SS for single-channel bulb controllers, PIC16F690-I/SS for multi-channel fixtures.
Recommended
Consumer Audio Accessories (Volume, Mute, EQ)
The PIC16F722-I/SS is a great fit for low-cost consumer audio accessories (volume knob encoders, mute toggles, IR-direct speakers) where 3.5 KB Flash and a single EUSART or I2C link to the host processor drive the user-interaction features. Its 8-channel 10-bit ADC scans rotary encoder inputs and LED indicator ring states, and PWM channels dim indicator LEDs smoothly. nanoWatt XLP delivers sub-100 nA sleep so an accessory parked on standby can survive years from a coin cell. The 28-SSOP package is small enough to fit behind a single-button dongle. Recommended companions: ATSAMD21E15A-AU for full-AUDIO digital signal processing on a higher-end product, PIC16F721-I/SS for cost-tightened variants.
Recommended
Medical Disposables and Wellness Devices
Lower-end medical disposable devices (single-use glucose testers, peak-flow meters and wellness wearables) often select an 8-bit MCU like the PIC16F722-I/SS because the program-memory cost is non-recurring and the device is well-known for stability. Its nanoWatt XLP architecture keeps average current in the microamp regime, 10-bit ADC at 8 channels is sufficient for strip and colorimetric sensing, and the PIC16 architecture supports IEC 60730 self-test routines. Designers should validate IEC 60601 isolation in the analog front end. The 28-SSOP and -40 to +85C industrial temperature range are sufficient for clinical-room operation; the -40 to +125C PIC16F722-E/SS variant is preferred for autoclaved accessories. Recommended companions: PIC16F722-E/SS for autoclaved accessories, PIC16F690-I/SS where 14-bit ADC is preferred.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F722-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F722-E/SS | PIC16F720-I/SS | PIC16F690-I/SS | PIC16F721-I/SO | PIC16F716-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP | 28-SSOP | 28-SSOP | 28-SOIC | 28-SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB Flash | 3.5 KB Flash | 1.75 KB Flash | 7 KB Flash | 7 KB Flash | 3.5 KB Flash |
| ADC Resolution | 10-bit, 8 channels | 10-bit, 8 channels | 10-bit, 8 channels | 10/12-bit, 12 channels | 10-bit | 8-bit |
| Operating Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.5 V to 5.5 V | 2.0 V to 5.5 V |
| Temperature Range | -40C to +85C (-I grade) | -40C to +125C (-E grade) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) | -40C to +85C (-I) |
| Low-Power Tech | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt |
| Lead-Free / RoHS | Yes (Compliant) | Yes (Compliant) | Yes (Compliant) | Yes (Compliant) | Yes (Compliant) | Yes (Compliant) |
Key Differentiators
- 16 MHz factory-calibrated internal oscillator with 2% tolerance (vs PIC16F720-I/SS)
- 3.5 KB Flash / 192 B RAM for slightly larger firmware (vs PIC16F720-I/SS)
- Industrial -40C to +85C temperature range (vs PIC16F722-E/SS)
Design Notes
The PIC16F722-I/SS has two VDD pins (8 and 19) and two VSS pins (7 and 20); both pairs must be connected to their respective supply and ground planes. Place 100 nF decoupling capacitors adjacent to each VDD/VSS pin pair to keep the on-chip ADC reference stable and the brown-out detection immune to momentary supply noise during PWM transitions. The EUSART lines and ICSP programming pins (RB6/PGC, RB7/PGD) require short traces; if a debug header is in the design, do not run ADC analog signals across them.
Configure the configuration bits (CONFIG register) explicitly in code before runtime; relying on factory defaults for BOR, watchdog and oscillator settings often leads to mysterious resets. For battery-powered designs, set the watchdog timer as a periodic interrupt source rather than a hard reset and disable it during sleep to reach nanoWatt XLP sleep below 50 nA. Use Microchip's PICkit or ICD tools to program and debug the 28-SSOP via ICSP pins PGC (RB6) and PGD (RB7) on the same board layout.
When interfacing the 10-bit ADC with sensors using long analog input traces, add a 100 nF X7R bypass from the ADC input to local analog ground. Long digital lines crossing analog lines introduce digital noise above the ADC's 10-bit dynamic range; route analog input on the top layer to keep them away from the PWM and oscillator traces. For best ADC accuracy at 2.5 V supply, set the ADC conversion clock to a divide-by-16 of Fosc; the internal voltage reference is the chip-internal reference.
Compliance Information
Microchip -SS package marking typically indicates lead-free matte-tin Pb-free terminations. The Microchip RoHS/REACH statements and Conflict-Free Smelter List (CFSI) apply. PIC16F722-I/SS is not AEC-Q100 qualified; for automotive-grade operation select PIC16F720-E/SS or PIC16F722-E/SS variants.
