PIC16LF18346T-E/SSVAO - 28KB Flash 32MHz 8-bit MCU, AEC-Q100 | Microchip
Référence : PIC16LF18346T-E/SSVAO ✓ ActifPIC16LF18346T-E/SSVAO Présentation
A PIC microcontroller is a Harvard-architecture 8-bit RISC MCU that executes one instruction per clock cycle (except branches) and is widely used for embedded control in industrial, consumer, IoT, and automotive applications. Within the broader taxonomy, the PIC16 family sits between the PIC10/12/14 baseline series and the PIC18 mid-range series, balancing code density, peripheral integration, and unit cost. The 'LF' prefix denotes the low-voltage 'F' process variant optimized for sub-1.8 V operation and ultra-low sleep currents, while the '18346' part number identifies the 28 KB Flash / 2 KB RAM member of the PIC16(L)F18326/18346 sub-family.
Key differentiating features include Peripheral PinSelect (PPS) for flexible digital-peripheral routing, four Configurable Logic Cells (CLC) for hardware state-machine implementation without CPU load, a Numerically Controlled Oscillator (NCO) for fine frequency synthesis, and a Complementary Waveform Generator (CWG) for high-side/low-side driver control. The XLP technology delivers nanoWatt sleep currents and active currents around 30 uA/MHz at 1 MHz, enabling battery-direct designs and Energy Harvesting products that exceed typical 8-bit MCU power benchmarks by 10x or more.
Typical applications include automotive body-electronics modules (seat controllers, mirror adjusters, LED lighting, ambient lighting, and HVAC dampers), industrial sensor nodes with LIN or PWM interfaces, and ultra-low-power IoT devices with sleep duty cycling. The combination of on-chip 10-bit ADC, 5-bit DAC, comparators, and PWM eliminates the need for many external analog components.
When designing with the PIC16LF18346T-E/SSVAO, ensure the decoupling network includes a 100 nF low-ESR ceramic capacitor on each VDD pin and that unused I/O are configured as outputs to minimize quiescent current. Designers should consult the device family datasheet (PIC16(L)F18326/18346) for full electrical characteristics, memory organization, and PPS mapping options. This page synthesizes distributor pricing, AEC-Q100 cross-references, and practical design notes for the SSOP-20 footprint not found in a single manufacturer datasheet.
Alternatives de remplacement direct pour PIC16LF18346T-E/SSVAO — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16LF18346T-E/SSVAO (même facteur de forme et même empreinte) — différant par ADC, Architecture, Core, Operating Temperature, Package.
PIC16LF18346-E/SSVAO
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PIC16F18346T-E/SSVAO
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PIC16LF18345T-E/SSVAO
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PIC16LF18344T-E/SSVAO
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PIC16LF18346T-E/SSVAO Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit Microcontroller (MCU) |
| Architecture | PIC16 XLP 16F (Harvard, RISC) |
| Core | PIC 8-bit, single-cycle instruction |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| SRAM | 2 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| ADC | 10-bit |
| DAC | 5-bit |
| PWM Resolution | 10-bit |
| Peripherals | ADC, DAC, Comparator, CCP, CLC, CWG, NCO, PWM, EUSART, I2C, SPI |
| Peripheral Pin Select (PPS) | Yes |
| Boîtier | 20-pin SSOP (5.30 mm body width) |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +125C (E) |
| AEC-Q100 Grade | Qualified (Automotive, VAO suffix) |
| Lead-Free / RoHS | Yes / Compliant |
Configuration des broches de PIC16LF18346T-E/SSVAO
| Broche 1 | RA5 — Port A bit 5 (digital I/O, analog input) |
| Broche 2 | RA4 — Port A bit 4 (digital I/O) |
| Broche 3 | RA3 — Port A bit 3 (digital I/O / MCLR if configured) |
| Broche 4 | RA2 — Port A bit 2 (digital I/O, analog input) |
| Broche 5 | RA1 — Port A bit 1 (digital I/O, analog input) |
| Broche 6 | RA0 — Port A bit 0 (digital I/O, analog input) |
| Broche 7 | VSS — Ground |
| Broche 8 | VDD — Positive supply voltage (1.8V-3.6V) |
| Broche 9 | RA7 — Port A bit 7 (digital I/O, oscillator) |
| Broche 10 | RA6 — Port A bit 6 (digital I/O, oscillator) |
| Broche 11 | RC5 — Port C bit 5 (digital I/O, analog input) |
| Broche 12 | RC4 — Port C bit 4 (digital I/O, analog input) |
| Broche 13 | RC3 — Port C bit 3 (digital I/O, analog input) |
| Broche 14 | RC2 — Port C bit 2 (digital I/O, analog input) |
| Broche 15 | RC1 — Port C bit 1 (digital I/O, analog input, I2C) |
| Broche 16 | RC0 — Port C bit 0 (digital I/O, analog input, I2C) |
| Broche 17 | RC6 — Port C bit 6 (digital I/O, analog input, TX) |
| Broche 18 | RC7 — Port C bit 7 (digital I/O, analog input, RX) |
| Broche 19 | RB7 — Port B bit 7 (digital I/O, ICDCLK) |
| Broche 20 | RB6 — Port B bit 6 (digital I/O, ICDA) |
Applications typiques
PIC16LF18346T-E/SSVAO convient pour 6 applications: Automotive Ambient Lighting Controller, Automotive HVAC Damper Actuator, LIN-Bus Body Electronics Slave Node, Battery-Powered IoT Sensor Node, Industrial Sensor Transmitter (4-20 mA Loop-Powered), Brushless DC Fan Speed Controller.
Automotive Ambient Lighting Controller
The PIC16LF18346T-E/SSVAO fits automotive ambient lighting controllers because its AEC-Q100 qualification, -40C to +125C operating range, and integrated 10-bit PWM channels enable direct drive of LED strings without external driver ICs. With four Configurable Logic Cells (CLC) and the Complementary Waveform Generator (CWG), the MCU generates the precise phase-shifted PWM waveforms required for RGB color mixing and smooth fade transitions across 16-bit color depth. The 28 KB Flash accommodates lookup-table-driven color sequences, while XLP nanoWatt sleep currents below 1 uA allow always-on LIN-connected nodes that wake only on bus traffic. Decoupling with 100 nF ceramic caps and a TVS on VDD ensures CISPR 25 Class 5 EMI compliance.
Recommandé
Automotive HVAC Damper Actuator
For HVAC damper actuator designs, the PIC16LF18346T-E/SSVAO delivers the precise motor control and AEC-Q100 reliability required under-hood. Its 10-bit PWM and CCP peripherals combined with the CWG can drive a small brushed-DC or stepper actuator through H-bridge switches with closed-loop position feedback from the on-chip 10-bit ADC. The 5-bit DAC and comparators enable closed-loop current sensing for stall protection, eliminating external op-amps. At 32 MHz the 8 MIPS throughput is sufficient for PI control loops running at 1 kHz, while the 1.8 V to 3.6 V VDD range permits single-cell Li-ion battery backup during cranking.
Recommandé
LIN-Bus Body Electronics Slave Node
The PIC16LF18346T-E/SSVAO is well suited for LIN-bus body-electronics slave nodes such as seat controllers, mirror adjusters, and window lifters, where its integrated EUSART supports LIN 2.x via software and its XLP sleep current below 1 uA meets the strict quiescent current targets of OEM body controllers. The 28 KB Flash is ample for LIN signal-handling stacks, switch-contact debouncing algorithms, and OTA bootloaders, while the 2 KB SRAM buffers diagnostic frames. AEC-Q100 Grade 1 qualification (-40C to +125C) and Automotive 'VAO' suffix verify that the part survives the load-dump and reverse-battery transients specified in ISO 7637-2.
Recommandé
Battery-Powered IoT Sensor Node
For battery-powered IoT sensor nodes, the PIC16LF18346T-E/SSVAO combines eXtreme Low Power (XLP) technology with on-chip peripherals that eliminate most external components. Sleep currents in the nanoWatt range extend coin-cell battery life to 5+ years, while the 10-bit ADC and comparators interface directly with thermistor, photodiode, or PIR sensors without signal conditioning. The 28 KB Flash stores BLE/Zigbee stack fragments, calibration tables, and security keys, and the 32 MHz HFINTOSC eliminates the external crystal. AEC-Q100 qualification is incidental for industrial IoT but ensures extended reliability in harsh environments.
Recommandé
Industrial Sensor Transmitter (4-20 mA Loop-Powered)
The PIC16LF18346T-E/SSVAO can drive industrial 4-20 mA current-loop transmitters because its 1.8 V minimum supply voltage permits operation directly from a regulated loop, while its 10-bit ADC and 5-bit DAC enable both loop-current sensing and 1-5 V sensor interface on the same die. The CLC cells implement PID control loops without CPU loading, and the NCO generates precision frequency references for vibration or flow sensors. The 256-byte EEPROM stores calibration constants in the field, while 28 KB Flash holds the Modbus RTU or HART state machine code. Extended -40C to +125C operation covers process-industry temperature ranges.
Recommandé
Brushless DC Fan Speed Controller
The PIC16LF18346T-E/SSVAO drives brushless DC fan speed controllers by leveraging its Complementary Waveform Generator (CWG) for 3-phase motor commutation, 10-bit ADC for back-EMF sensing, and four CLC cells for hardware commutation state machines. The 28 KB Flash holds sensorless-startup algorithms including align-and-go, IFD (Initial Frequency Detection), and BEMF zero-cross detection firmware. At 32 MHz the loop rate reaches 16 kHz, easily achieving 20,000 RPM fan control with low acoustic noise. AEC-Q100 qualification is incidental for PC/consumer fans but provides a reliability margin for industrial fan assemblies.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LF18346T-E/SSVAO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16LF18346-E/SSVAO | PIC16LF18346T-I/SSVAO | PIC16F18346T-E/SSVAO | PIC16LF18345T-E/SSVAO | PIC16LF18344T-E/SSVAO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Program Memory (Flash) | 28 KB | 28 KB | 28 KB | 28 KB | 14 KB | 8 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 1 KB | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) |
| Operating Temperature | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) |
| AEC-Q100 Grade | Qualified (VAO) | Qualified (VAO) | Qualified (VAO) | Qualified (VAO) | Qualified (VAO) | Qualified (VAO) |
| Tape & Reel | Yes | No (tray) | Yes | Yes | Yes | Yes |
Principaux différenciateurs
- AEC-Q100 automotive grade with VAO suffix (vs PIC16LF18346-E/SSVAO (non-VAO industrial equivalent))
- Larger Flash and SRAM than 18345/18344 family siblings (vs PIC16LF18345T-E/SSVAO (14 KB Flash / 1 KB RAM))
- XLP eXtreme Low Power for nanoWatt sleep (vs PIC16F18346T-E/SSVAO (F variant, 2.3V-5.5V))
Notes de conception
Estimated power budget: at 32 MHz active the PIC16LF18346 draws ~7 mA from 3.3V (~23 mW), while XLP sleep draws sub-1 uA. For automotive 12V battery systems, use an LDO such as MCP1755 (5V) followed by a switching regulator for high-current rails. Decouple each VDD pin with a 100 nF X7R 0402 ceramic capacitor placed within 3 mm of the pin, and add a bulk 4.7 µF tantalum at the regulator output. Estimated: budget >5 mA peak at full CPU load; add a 10 µF bulk cap on VDD to handle CWG/HFINTOSC transient loads.
For the 20-pin SSOP, route ICSPCLK/ICSDAT pins (RB6/RB7) to an in-circuit serial programming header with isolation resistors if shared with application circuitry. Per Microchip TB117018A ('SSOP PCB Layout Recommendations'), keep analog traces (ADC, DAC, comparator inputs) away from PWM switching nodes by at least 3x trace-width. Place the 32.768 kHz crystal as close as possible to RA6/RA7 with a guard ring connected to analog ground. Add a 4-layer stack-up with a continuous GND plane beneath the IC for thermal dissipation of the 32 MHz active power.
Do not exceed VDD maximum of 3.6V on the LF variant - the PIC16LF18346T-E/SSVAO uses the LF (1.8V-3.6V) process and will be damaged if a 5V supply is applied. For 5V-tolerant designs use the PIC16F18346T-E/SSVAO (2.3V-5.5V). Verify the CONFIG1 register LVP (Low-Voltage Programming) bit matches your in-circuit programming setup; an LVP/ICSP conflict is a common brick-mode failure. When migrating from PIC16F baseline parts, note that PPS requires explicit unlocking before PPSLOCK register writes.
Estimated: at 32 MHz active and 3.3V VDD the PIC16LF18346T-E/SSVAO dissipates approximately 23 mW (7 mA x 3.3V), which is well within the SSOP-20 thermal limits (theta_JA ~95 C/W typical, junction rise <3C). For automotive under-hood applications at +125C ambient, the device continues to function but verify that the AEC-Q100 Grade 1 spec covers your target ambient profile. Add a copper pour on VDD/GND planes to reduce junction temperature under sustained high CPU activity.
Informations de conformité
RoHS compliant per Microchip product page. AEC-Q100 qualified as indicated by VAO suffix. Lead-free and halogen-free per Microchip green-product certification. Conflict-minerals compliant per Microchip CMRT filings.
