PIC16F818T-I/SSTSL - 20MHz 8-bit Flash MCU 1.75KB | Microchip
Teilenummer: PIC16F818T-I/SSTSL ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $1.85 | $1,85 |
| 10 | $1.66 | $16,60 |
| 100 | $1.47 | $147,00 |
| 500 | $1.32 | $660,00 |
| 1.000 | $1.18 | $1.180,00 |
PIC16F818T-I/SSTSL Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals on one die. The PIC16F818 belongs to the mid-range PIC16 family (hypernyms: 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC). It uses a RISC Harvard architecture with only 35 single-word instructions, allowing compact code generation and predictable interrupt latency, which makes the family well-suited for deterministic real-time control tasks.
Key features include an internal RC oscillator selectable up to 8 MHz, 10-bit ADC with up to 5 channels, 1 capture/compare/PWM module, an enhanced USART for asynchronous and synchronous serial communication, and a 10-bit PWM generator. NanoWatt Technology provides multiple power-managed modes - Run, Idle, and Sleep - with typical Sleep currents in the microamp range, enabling battery-friendly duty-cycled designs. The device supports in-circuit serial programming (ICSP) via two pins, allowing firmware updates after PCB assembly.
The enhanced mid-range core adds hardware interrupt context saving, a deeper hardware stack, and up to 256 bytes of access RAM, which the older PIC16C7x/PIC16C62xA/PIC16C5X/PIC12Cxxx baselines lack. Code written for these legacy parts is upward-compatible with the PIC16F818, simplifying migration from older 18-pin/20-pin PIC designs.
Typical applications include appliance control, sensor conditioning front-ends, low-cost motor control, LED lighting controllers, security keypads, and consumer white goods. The wide operating voltage and low Sleep current also make it a fit for battery-powered instrumentation and remote sensor nodes.
When designing with this part, reserve the ICSP pins (RB6/RB7) for in-system programming access. Place the decoupling capacitor within 5 mm of VDD and use a 100 nF X7R for digital noise suppression; add a 10 uF bulk capacitor if the supply has long traces.
This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not consolidated on a single manufacturer or distributor page, giving engineers a faster decision path than the Microchip PIC16F818/819 datasheet alone.
Drop-in-Alternativen für PIC16F818T-I/SSTSL – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC16F818T-I/SSTSL (gleiche Bauform und Footprint) – abweichend in ADC, Internal Oscillator, Package, Core Architecture, Program Memory (Flash).
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16F818T-I/SS
✅ Drop-In✓ Auf Lager
$1.92 / Stück
Datenblatt ansehen →PIC16F818-I/SS
✅ Drop-In✓ Auf Lager
$2.02 / Stück
Datenblatt ansehen →PIC16F818T-I/MLTSL
✅ Drop-In✓ Auf Lager
$1.85 / Stück
Datenblatt ansehen →PIC16F88-I/SS
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$3.08 / Stück
Datenblatt ansehen →PIC16F819-I/SS
✅ Drop-In✓ Auf Lager
$2.11 / Stück
Datenblatt ansehen →PIC16F818T-I/SSTSL Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC16 enhanced 8-bit RISC |
| Program Memory | 1.75 KB (1K x 14) Flash |
| Data EEPROM | 128 bytes |
| Data SRAM | 128 bytes |
| CPU Speed | 20 MHz max (200 ns instruction cycle) |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 10-bit, up to 5 channels |
| Timers | Timer0, Timer1, Timer2 |
| PWM | 10-bit PWM (1 channel, ECCP) |
| Communication | EUSART (RS-232/485), ICSP |
| Internal Oscillator | Yes, 31 kHz to 8 MHz selectable |
| Betriebstemperatur | -40C to +85C (Industrial) |
| Gehäuse | 20-pin SSOP (5.30 mm body width) |
| Montageart | Surface Mount, Tape & Reel |
| Instruction Set | 35 single-word instructions |
| RoHS-Status | Compliant |
PIC16F818T-I/SSTSL Pin-Konfiguration
| Pin 1 | MCLR/VPP/RA5 — Master clear (reset) input / programming voltage / PORTA bit 5 |
| 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/CVREF — PORTA bit 2 / analog input channel 2 / comparator voltage reference |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input channel 3 / ADC positive reference |
| Pin 6 | RA4/AN4/T0CKI — PORTA bit 4 / analog input channel 4 / Timer0 clock input |
| Pin 7 | AVSS — Analog ground |
| Pin 8 | AVDD — Analog positive supply |
| Pin 9 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock input / PORTA bit 7 |
| Pin 10 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / PORTA bit 6 |
| 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 module |
| Pin 13 | RC2/CCP1 — PORTC bit 2 / ECCP module input/output |
| Pin 14 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 17 | RC6/TX/CK — PORTC bit 6 / EUSART TX / SPI clock |
| Pin 18 | RC7/RX/DT — PORTC bit 7 / EUSART RX / SPI data |
| Pin 19 | VSS — Digital ground |
| Pin 20 | VDD — Digital positive supply |
Typische Anwendungen
PIC16F818T-I/SSTSL ist geeignet für 7 Anwendungs: Appliance Control Boards, Battery-Powered Sensor Nodes, LED Lighting Controllers, Security Keypads and Access Control, Consumer White Goods and HVAC, Automotive Interior Accessories (Non-Safety), Industrial Sensor Conditioning.
Appliance Control Boards
PIC16F818T-I/SSTSL fits appliance control boards where deterministic 200 ns instruction execution and 16 I/O pins drive relays, triacs, and sensor inputs. Its 10-bit ADC reads temperature sensors (NTC) and voltage dividers for power-line monitoring, while the ECCP module generates PWM for triac phase-angle control of heater elements or universal-motor speed. NanoWatt Sleep mode lets the MCU draw microamp-level standby current between button presses, meeting ENERGY STAR idle budgets for white goods. The wide 2.0-5.5 V VDD range accommodates both 3.3 V logic-level keypads and 5 V relay-driver rails from a single part.
Empfohlen
Battery-Powered Sensor Nodes
For battery-powered sensor nodes, PIC16F818T-I/SSTSL's NanoWatt Sleep current (typically <1 uA) and internal 31 kHz-8 MHz RC oscillator let the MCU wake periodically, sample a sensor, and return to Sleep without external components. The 128-byte EEPROM logs calibration or hourly readings without battery backup, and 16 I/O pins support I2C sensor buses plus interrupt-driven wake lines. Operating down to 2.0 V allows 2xAA alkaline or single Li-ion cell designs without boost converters. The 20-pin SSOP footprint is friendly to compact sensor PCBs.
Empfohlen
LED Lighting Controllers
PIC16F818T-I/SSTSL drives LED lighting controllers where the ECCP module produces 10-bit PWM dimming across RGB or single-channel high-brightness LEDs. The 20 MHz core handles DMX-512 or DALI receive parsing via the EUSART while maintaining smooth dim curves, and the 10-bit ADC monitors LED current via a sense resistor for closed-loop brightness regulation. The 2.0-5.5 V range simplifies compatibility with both 3.3 V logic-level LEDs and 5 V analog dimming interfaces. The wide -40C to +85C industrial temp range suits outdoor fixtures.
Empfohlen
Security Keypads and Access Control
PIC16F818T-I/SSTSL serves security keypads where the EUSART interfaces with RFID readers or Zigbee modules, and 16 I/O pins scan 4x4 matrix keypads with minimal ghosting. The 1.75 KB Flash stores encrypted credential tables, while 128-byte EEPROM retains user records across power cycles. The 200 ns instruction execution ensures sub-millisecond debounce and tamper-loop response, and the ICSP interface allows field firmware updates via service-tool headers. The 20-SSOP footprint fits behind standard wall-mount keypads.
Empfohlen
Consumer White Goods and HVAC
PIC16F818T-I/SSTSL is well-matched to consumer white goods and HVAC thermostats where a mix of analog sensing and digital control is required. The 10-bit ADC reads thermistor inputs, the ECCP module drives triac-fired compressor or blower loads, and the EUSART links to a Wi-Fi or BLE module for cloud connectivity. The 2.0-5.5 V VDD range supports direct operation from 5 V standby rails in mains-powered equipment, and the -40C to +85C industrial grade handles outdoor thermostat enclosures. NanoWatt Idle mode keeps standby power below 0.5 W for ENERGY STAR compliance.
Empfohlen
Automotive Interior Accessories (Non-Safety)
PIC16F818T-I/SSTSL handles automotive interior accessories such as dome-light controllers, seat-heater keypads, and aftermarket gauge clusters where 16 I/O pins and a 10-bit ADC are sufficient. The -40C to +85C industrial grade covers cabin-temperature operation, and the wide VDD range tolerates cranking transients when paired with a TVS-protected 5 V regulator. The 20-SSOP package fits inside tight dashboard enclosures. For under-hood or safety-critical applications, migrate to AEC-Q100-qualified PIC16F equivalents.
Empfohlen
Industrial Sensor Conditioning
PIC16F818T-I/SSTSL conditions industrial 4-20 mA or 0-10 V sensor signals by digitizing them with its 10-bit ADC and outputting calibrated values over the EUSART as RS-485 Modbus frames. The 20 MHz core processes linearization, averaging, and fault-detection algorithms in real time, and the 128-byte EEPROM stores per-channel calibration constants. The wide 2.0-5.5 V VDD range supports both 3.3 V and 5 V analog front-ends, and NanoWatt Sleep mode lets battery-backed remote sensors idle at microamp currents between transmissions.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16F818T-I/SSTSL – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16F818T-I/SS | PIC16F818-I/SS | PIC16F818T-I/MLTSL | PIC16F88-I/SS | PIC16F819-I/SS |
|---|---|---|---|---|---|---|
| Package | 20-pin SSOP | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 1.75 KB | 1.75 KB | 1.75 KB | 1.75 KB | 7 KB (+300%) | 3.5 KB (+100%) |
| Data SRAM | 128 B | 128 B | 128 B | 128 B | 368 B (+188%) | 256 B (+100%) |
| Data EEPROM | 128 B | 128 B | 128 B | 128 B | 256 B (+100%) | 256 B (+100%) |
| CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Voltage | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| ADC | 10-bit, 5 ch | 10-bit, 5 ch | 10-bit, 5 ch | 10-bit, 5 ch | 10-bit, 7 ch (+40%) | 10-bit, 5 ch |
| I/O Pins | 16 | 16 | 16 | 16 | 16 | 16 |
Wichtigste Unterscheidungsmerkmale
- Flash-based reprogrammability with ICSP (vs. PIC16F84A)
- On-chip 10-bit ADC eliminates external converter (vs. PIC16F628)
- NanoWatt Technology for battery-friendly Sleep (vs. PIC16F88)
- Cost-optimized 1.75 KB Flash vs larger siblings (vs. PIC16F819)
Designhinweise
Place a 100 nF X7R decoupling capacitor within 5 mm of the VDD pin (pin 20) and a second 100 nF near AVSS/AVDD (pins 7-8) for analog supply noise suppression. Estimated: at 20 MHz / 5 V active, VDD current is ~5-10 mA; add a 10 uF bulk cap if the supply trace exceeds 50 mm. The 2.0-5.5 V range allows direct 3.3 V or 5 V rails without level shifters.
Reserve ICSP pins RB6/PGC and RB7/PGD (bits 6 and 7 of PORTB) for in-circuit serial programming access - do not place series resistors above ~100 ohm or buffers that block programming voltages. MCLR (pin 1) needs a 10 kohm pull-up to VDD and a 100 nF cap to ground for reset; for ICSP, add a diode or resistor network that allows VPP (~13 V) to override the pull-up without back-driving the rest of the circuit.
Do not exceed 5.5 V on VDD - the PIC16F818 is not 5 V tolerant above spec. Ensure the ADC reference (VREF+/VREF-) is properly decoupled; floating references produce noisy ADC readings. When migrating code from PIC16F84A or PIC16C7x baselines, review the configuration-word defaults - the enhanced mid-range core has different oscillator and watchdog defaults that can leave the device unconfigured if the configuration bits are not explicitly programmed.
Estimated: at 20 MHz, 5 V and 10 mA active current, dissipation is ~50 mW - well within SSOP-20 thermal limits (theta_JA ~85 C/W typical for SSOP). For continuous 85C ambient operation, derate by ~1.2 mW/C. NanoWatt Sleep mode drops current to <1 uA typical, so thermal concerns are negligible in duty-cycled battery designs.
Compliance-Informationen
RoHS compliant per Microchip product page. Industrial temperature grade only; not AEC-Q100 qualified - select a Q-suffixed variant for automotive designs.
