PIC16F570-I/SP - 8-bit MCU, 3KB Flash, 20MHz, Dual Op Amps | Microchip
MPN: PIC16F570-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.84 | $2.84 |
| 10 | $2.62 | $26.20 |
| 100 | $2.31 | $231.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
PIC16F570-I/SP Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals. The PIC16F570 belongs to the PIC16F family of 8-bit RISC microcontrollers from Microchip, positioned below the PIC18 and PIC24 families in the PIC architecture hierarchy: 8-bit PIC16 -> 8-bit PIC microcontrollers -> embedded microcontrollers -> microprocessors -> semiconductors. The integrated op amps and comparators differentiate this MCU from typical PIC16 baseline devices, eliminating the need for external analog components in many sensor-interface and signal-conditioning designs.
Key features include 24 I/O pins, a 5-channel 8-bit ADC with internal voltage reference, two rail-to-rail operational amplifiers configurable by software, two analog comparators, an internal 8 MHz oscillator (with external clock options up to 20 MHz), in-circuit serial programming (ICSP), and a wide 2.5V to 5.5V operating voltage range. The device supports industrial -40C to +85C operation and offers low-power sleep modes suitable for battery-powered applications.
The PIC16F570 utilizes Microchip's enhanced mid-range 14-bit instruction set architecture (a superset of the baseline 12-bit PIC instruction set), enabling C-compiler-friendly code development while maintaining upward compatibility with other PIC16F devices. The on-chip Flash allows in-application reprogramming, and the ICSP interface permits board-level programming without removing the device.
Typical applications include smoke detectors, sensor signal conditioning, battery chargers, LED drivers with analog feedback, and small industrial control loops where the integrated op amps remove the need for external analog front-end ICs.
When designing with the PIC16F570, ensure the op-amp output swing and ADC input range match the intended signal levels, and use Microchip's MPLAB X IDE with the XC8 compiler for development. The 28-pin SPDIP package is through-hole and easy to prototype on perfboard or through-hole PCBs.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes for engineers comparing PIC16F570 variants, not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F570-I/SP — 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 PIC16F570-I/SP (same form factor and footprint) — differing in Package, I/O Pins, ADC, Internal Oscillator, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F570-E/SP
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16F570-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F570-E/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F506-I/P
✅ Drop-In✓ In Stock
$0.75 / Unit
View Datasheet →PIC16F527-I/P
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16F526-I/P
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →PIC16F570-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (enhanced mid-range, 14-bit instruction word) |
| Program Memory | 3 KB Flash (2K x 14 words) |
| Data RAM | 64 bytes |
| Maximum CPU Clock | 20 MHz (200 ns instruction cycle) |
| Internal Oscillator | 8 MHz |
| Operating Voltage | 2.5 V to 5.5 V |
| I/O Pins | 24 |
| ADC | 5-channel, 8-bit |
| Operational Amplifiers | 2 (on-chip, software configurable) |
| Comparators | 2 |
| Package | 28-pin SPDIP (Skinny Plastic DIP) |
| Operating Temperature | -40C to +85C (Industrial, "I" suffix) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Mounting Type | Through-Hole |
PIC16F570-I/SP Pin Configuration
| Pin 1 | RA0/AN0 — Bidirectional I/O / ADC input channel 0 |
| Pin 2 | RA1/AN1 — Bidirectional I/O / ADC input channel 1 |
| Pin 3 | RA2/AN2 — Bidirectional I/O / ADC input channel 2 |
| Pin 4 | RA3/AN3 — Bidirectional I/O / ADC input channel 3 |
| Pin 5 | RA4/AN4/T0CKI — Bidirectional I/O / ADC input channel 4 / Timer0 clock input |
| Pin 6 | RA5/MCLR/VPP — Bidirectional I/O / Master Clear reset (active low) / ICSP programming voltage |
| Pin 7 | VSS — Ground reference |
| Pin 8 | VDD — Positive supply voltage (2.5V to 5.5V) |
| Pin 9 | OSC1/RA7 — External oscillator input / bidirectional I/O |
| Pin 10 | OSC2/RA6 — External oscillator output / bidirectional I/O |
| Pin 11 | RC0 — Bidirectional I/O / PWM output |
| Pin 12 | RC1 — Bidirectional I/O / PWM output |
| Pin 13 | RC2 — Bidirectional I/O |
| Pin 14 | RC3 — Bidirectional I/O |
| Pin 15 | RC4 — Bidirectional I/O |
| Pin 16 | RC5 — Bidirectional I/O |
| Pin 17 | RC6 — Bidirectional I/O |
| Pin 18 | RC7 — Bidirectional I/O |
| Pin 19 | VSS — Ground reference (analog) |
| Pin 20 | VDD — Positive supply voltage (analog) |
| Pin 21 | RB0 — Bidirectional I/O / interrupt-on-change |
| Pin 22 | RB1 — Bidirectional I/O / interrupt-on-change |
| Pin 23 | RB2 — Bidirectional I/O / interrupt-on-change |
| Pin 24 | RB3 — Bidirectional I/O / interrupt-on-change / ICSP PGD |
| Pin 25 | RB4 — Bidirectional I/O / interrupt-on-change |
| Pin 26 | RB5 — Bidirectional I/O / interrupt-on-change |
| Pin 27 | RB6 — Bidirectional I/O / interrupt-on-change / ICSP PGC |
| Pin 28 | RB7 — Bidirectional I/O / interrupt-on-change |
Typical Applications
PIC16F570-I/SP is suitable for 6 applications: Smoke Detector Signal Chain, Battery Charger Controller, Industrial Sensor Transmitter, LED Lighting Driver with Analog Dimming, Appliance Control Board, HVAC Thermostat and Fan Controller.
Smoke Detector Signal Chain
The PIC16F570-I/SP fits smoke detector designs because its integrated dual op amps condition the photoelectric chamber signal directly without external analog ICs, while the 5-channel 8-bit ADC digitizes the smoke-density waveform for firmware-side false-alarm rejection. The 3 KB Flash comfortably holds detection algorithms, self-test routines, and low-battery supervision, and the 8 MHz internal oscillator eliminates the external crystal reducing BOM cost. The two on-chip comparators handle chamber reference thresholds, while the op amps provide the high-gain first stage. The industrial -40C to +85C temperature range covers residential and commercial smoke alarm specifications.
Recommended
Battery Charger Controller
The PIC16F570-I/SP is well-suited for low-to-medium current battery chargers because the integrated op amps form constant-current and constant-voltage feedback loops without external analog components, and the 5-channel ADC monitors battery voltage, charge current, and temperature. The 2.5 V to 5.5 V operating range supports 1-cell Li-ion and multi-cell NiMH topologies. Flash reprogrammability allows field updates of charge algorithms for different battery chemistries, and the wide operating temperature range covers portable consumer and industrial charger environments.
Recommended
Industrial Sensor Transmitter
The PIC16F570-I/SP is appropriate for 4-20 mA or 0-10 V industrial sensor transmitters because the integrated dual op amps provide instrumentation-amp signal conditioning directly at the MCU, the ADC digitizes the conditioned signal, and the PWM outputs drive the analog output stage. The 24 GPIO handle HART or similar digital communication, multiple sensor inputs, and configuration switches. The industrial temperature range and 5 V operation match industrial process-control environments, and the through-hole SPDIP package is convenient for prototype and low-volume industrial assemblies.
Recommended
LED Lighting Driver with Analog Dimming
The PIC16F570-I/SP fits LED lighting controllers with analog dimming because the integrated op amps form constant-current feedback loops for high-brightness LED strings, while the comparators detect thermal-foldback events from an NTC sensor. The PWM module provides digital dimming, and the ADC monitors supply voltage and LED current. Flash reprogrammability supports firmware updates for new lighting protocols, and the wide operating voltage handles 12 V and 24 V LED driver rails directly.
Recommended
Appliance Control Board
The PIC16F570-I/SP is widely used in white-goods appliance controls such as washing machines, dishwashers, and microwave ovens because its integrated op amps condition sensor inputs (water level, temperature, motor current) without external analog ICs. The 5-channel ADC digitizes multiple sensor channels, while the comparators detect zero-crossing for triac triggering of heating elements or motors. Flash in-circuit programmability simplifies factory calibration and field firmware updates across product variants.
Recommended
HVAC Thermostat and Fan Controller
The PIC16F570-I/SP is appropriate for residential and light-commercial HVAC thermostats because the on-chip op amps condition thermistor or RTD temperature sensors, the comparators handle setpoint thresholds for fan-speed or compressor staging, and the ADC monitors multiple zone sensors. The 2.5 V to 5.5 V operation supports battery-powered thermostats and 24 VAC-powered units with a small regulator. The Flash programmability supports multiple HVAC algorithms and OEM firmware customization.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F570-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F570-E/SP | PIC16F570-I/SO | PIC16F570-E/SO | PIC16F506-I/P | PIC16F527-I/P | PIC16F526-I/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SPDIP | 28-pin SPDIP - same | 28-pin SOIC - different (SMD) | 28-pin SOIC - different (SMD) | 28-pin PDIP - same | 28-pin PDIP - same | 28-pin PDIP - same |
| Program Flash | 3 KB | 3 KB | 3 KB | 3 KB | 1.5 KB (-50%) | 1.5 KB (-50%) | 1.5 KB (-50%) |
| Data RAM | 64 bytes | 64 bytes | 64 bytes | 64 bytes | 67 bytes | 68 bytes | 67 bytes |
| Max CPU Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| ADC | 5-ch, 8-bit | 5-ch, 8-bit | 5-ch, 8-bit | 5-ch, 8-bit | 3-ch, 8-bit | 8-ch, 8-bit | 3-ch, 8-bit |
| Integrated Op Amps | 2 | 2 | 2 | 2 | 0 | 0 (note: PIC16F527 has integrated ADC and op amps in some variants) | 0 |
| Comparators | 2 | 2 | 2 | 2 | 0 | 2 | 0 |
| Temperature Grade | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
Key Differentiators
- Dual integrated operational amplifiers (vs PIC16F506-I/P)
- Largest Flash in same 28-pin SPDIP PIC16F57x family (vs PIC16F527-I/P)
- Industrial temperature grade option (vs PIC16F506-I/P (no E grade available))
Design Notes
Decouple the PIC16F570's dual VDD/VSS pin pairs (pins 7/8 digital, pins 19/20 analog) with separate 100 nF ceramic capacitors placed as close as possible to each VDD pin, plus a shared 10 uF bulk capacitor at the supply entry. The on-chip op amps and ADC draw transient currents from the analog supply, and isolating the analog VDD/VSS from the digital VDD/VSS with ferrite beads or small resistors significantly improves ADC noise performance per Microchip's analog design guidelines.
The MCLR/RA5/VPP pin (pin 6) must have a 10-50 kohm pull-up to VDD for normal operation; if left floating the device will randomly reset. When using ICSP, ensure the pull-up is at least 10 kohm so the programmer can drive the pin low without contention. Per Microchip datasheet DS40001684F, an MCLR decoupling capacitor of 100 nF directly at the pin prevents ESD-induced resets in noisy industrial environments.
Keep analog input traces (RA0-RA4) physically short and away from PWM outputs (RC0/RC1) and oscillator pins (RA6/RA7) to minimize digital crosstalk into the ADC. Place a ground pour under the MCU and route analog signals over an unbroken ground plane. If using the internal 8 MHz oscillator, follow Microchip's layout recommendations for the OSC1/OSC2 traces even though they can be repurposed as GPIO - leave 5 mm clearance from switching nodes.
Estimated: The PIC16F570 in 28-pin SPDIP has a thermal resistance theta_JA of approximately 70 C/W (per Microchip SPDIP package thermal data). At maximum operating current of 5 mA from a 5 V supply, the MCU dissipates 25 mW, resulting in a junction temperature rise of only 1.75 C above ambient - thermal management is not a concern in normal industrial applications. Always validate with the production PCB layout, which affects the effective theta_JA.
Compliance Information
RoHS and REACH compliance per Microchip product page. Not AEC-Q100 qualified; for automotive applications consider PIC16F15354 family or Microchip automotive-grade PIC16F1xxx. Lead-free and halogen-free per Microchip 28-pin SPDIP package declarations.
