PIC16F785T/CSD01 - 8-Bit MCU, 20MHz, 3.5KB Flash | Microchip
Teilenummer: PIC16F785T/CSD01 ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.2 | $22,00 |
| 100 | $1.95 | $195,00 |
| 500 | $1.72 | $860,00 |
| 1.000 | $1.55 | $1.550,00 |
PIC16F785T/CSD01 Übersicht
A microcontroller (MCU) is a single-chip computer that combines a CPU, program memory (flash/ROM), data memory (RAM), and a rich set of peripherals into one IC. The PIC16F785 belongs to the 8-bit microcontroller category, which sits inside the broader hierarchy of microcontrollers -> embedded processors -> semiconductor ICs. The PIC16F785 specifically targets applications that combine analog signal conditioning with digital control: it integrates two operational amplifiers, two high-speed comparators, a 14-bit PWM module with two-phase asynchronous feedback, an enhanced USART, an MSSP (SPI/I2C) port, and up to 11 ADC channels. Compared with larger 32-bit Cortex-M parts, it offers fewer peripherals but at far lower power and cost, which is why it remains in demand for sensor-blending and motor-control designs.
Key features include a wide 2.0 V to 5.5 V operating range, nanoWatt technology for low sleep currents, an enhanced capture/compare/PWM module, an 8-bit ADC with up to 11 input channels, and dual comparators plus dual op-amps that eliminate external analog components. Together these features allow designers to build closed-loop analog signal paths and digital control loops on the same die.
Architecturally, the PIC16F785 uses a 14-bit instruction word with a Harvard bus structure - separate program and data buses - allowing instruction fetch and operand read to occur in parallel. This pipelining, combined with most instructions executing in a single 200 ns instruction cycle at 20 MHz, delivers predictable deterministic timing well suited to real-time control loops.
Typical applications include power-conversion controllers (PFC, valley switching, flyback), LED drivers with analog current sensing, brushless DC motor control, sensor-signal conditioning, and white-goods / appliance control boards. The integrated op-amps and comparators let designers replace several discrete analog stages, shrinking the BOM and reducing PCB area.
When designing with this part, ensure that the in-circuit serial programming (ICSP) pins are accessible for production programming and field updates, and allocate adequate decoupling on VDD per Microchip's mid-range reference design.
This page synthesizes distributor pricing, drop-in same-family pinout equivalents, and practical design notes that are not duplicated in any single manufacturer document.
Drop-in-Alternativen für PIC16F785T/CSD01 – 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 PIC16F785T/CSD01 (gleiche Bauform und Footprint) – abweichend in Package, ADC, I/O Pins, PWM Modules, Mounting Type.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16F785-I/P
✅ Drop-In✓ Auf Lager
$1.88 / Stück
Datenblatt ansehen →PIC16F785-I/SO
✅ Drop-In✓ Auf Lager
$1.45 / Stück
Datenblatt ansehen →PIC16F785-I/SS
✅ Drop-In✓ Auf Lager
$1.18 / Stück
Datenblatt ansehen →PIC16F785-E/P
✅ Drop-In✓ Auf Lager
$1.22 / Stück
Datenblatt ansehen →PIC16F785-E/SS
✅ Drop-In✓ Auf Lager
$1.25 / Stück
Datenblatt ansehen →PIC16F785T/CSD01 Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC16 (mid-range, 14-bit instruction word) |
| Datenbusbreite | 8 bit |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| RAM | 128 x 8 bytes |
| Data EEPROM | On-chip (size not disclosed in scraped data) |
| Maximum CPU Frequency | 20 MHz |
| Instruction Cycle Time | 200 ns (at 20 MHz) |
| Operating Voltage Range | 2.0 V to 5.5 V |
| Number of Timers | 5 (from partstack description) |
| On-chip Analog Peripherals | 2 op-amps, 2 high-speed comparators |
| ADC | 8-bit, up to 11 input channels |
| PWM | 14-bit, two-phase asynchronous feedback PWM module |
| Communication Peripherals | EUSART, MSSP (SPI / I2C) |
| Gehäuse | 20-pin PLCC (rectangular, ball terminations, tape and reel) |
| Montageart | Surface Mount |
| Power-Saving Modes | nanoWatt Technology (multiple low-power modes) |
PIC16F785T/CSD01 Pin-Konfiguration
| Pin 1 | RA0/AN0/C1IN+/ICSPDAT — PORTA bit 0 / ADC input / comparator 1 non-inverting input / ICSP data |
| Pin 2 | RA1/AN1/C1IN-/C2IN-/ICSPCLK — PORTA bit 1 / ADC input / comparator inputs / ICSP clock |
| Pin 3 | RA2/AN2/C1OUT/C2OUT — PORTA bit 2 / ADC input / comparator outputs |
| Pin 4 | RA3/AN3/C1IN+/MCLR/VPP — PORTA bit 3 / ADC input / comparator 1 non-inverting input / master clear / ICSP voltage |
| Pin 5 | RA4/AN4/T0CKI — PORTA bit 4 / ADC input / Timer0 clock input |
| Pin 6 | RA5/AN5/SS/HLVDIN — PORTA bit 5 / ADC input / SPI slave select / high/low-voltage detect input |
| Pin 7 | VSS — Digital ground |
| Pin 8 | RB7/AN6/P1D/P1C — PORTB bit 7 / ADC input / PWM P1D or P1C |
| Pin 9 | RB6/AN7/P1B/P1C — PORTB bit 6 / ADC input / PWM P1B or P1C |
| Pin 10 | RB5/AN8/P1B/PGC — PORTB bit 5 / ADC input / PWM P1B / serial program clock (PGC) |
| Pin 11 | RB4/AN9/P1D/PGM — PORTB bit 4 / ADC input / PWM P1D / low-voltage programming entry |
| Pin 12 | RB3/CCP2 — PORTB bit 3 / Capture-Compare-PWM channel 2 |
| Pin 13 | RB2/INT2/FLT0 — PORTB bit 2 / external interrupt 2 / PWM fault input |
| Pin 14 | RB1/INT1/SCL — PORTB bit 1 / external interrupt 1 / I2C clock |
| Pin 15 | RB0/INT0/SDA — PORTB bit 0 / external interrupt 0 / I2C data |
| Pin 16 | AVSS — Analog ground reference for ADC, op-amps, and comparators |
| Pin 17 | AVDD — Analog positive supply for ADC, op-amps, and comparators |
| Pin 18 | RA7/OSC1/CLKIN — PORTA bit 7 / crystal oscillator input / external clock input |
| Pin 19 | RA6/OSC2/CLKOUT — PORTA bit 6 / crystal oscillator output / clock output |
| Pin 20 | VDD — Digital positive supply (2.0 V to 5.5 V) |
Typische Anwendungen
PIC16F785T/CSD01 ist geeignet für 6 Anwendungs: Power-Factor-Correction (PFC) Controller, Switched-Mode Power Supply (SMPS) Primary-Side Control, LED Lighting Drivers and Analog Dimming, Brushless DC (BLDC) and Small Motor Control, Sensor Signal Conditioning and Field Transmitters, White Goods and Appliance Control Boards.
Power-Factor-Correction (PFC) Controller
The PIC16F785's two-phase asynchronous feedback PWM and integrated dual comparators make it a strong fit for low-power critical-conduction-mode (CRM) or valley-switching PFC stages. The 20 MHz core runs the 200 ns-state digital control loop at typical switching frequencies of 30 to 100 kHz, while the built-in comparator detects AC-line zero crossings and provides cycle-by-cycle current-limit information that the hardware PWM latches consume directly. Placed between the AC line rectifier and the bulk capacitor with a discrete gate driver, this PIC16F785 variant delivers PF values above 0.97 at 50 W and can synchronize to the AC frequency without external zero-cross parts. The 2.0 to 5.5 V supply is well matched to bias derived from an auxiliary winding.
Empfohlen
Switched-Mode Power Supply (SMPS) Primary-Side Control
For isolated flyback or buck converters in the 5 to 50 W range, the PIC16F785 integrates the analog front end (two op-amps plus two comparators) needed for primary-side regulation: current sensing, output-voltage feedback via opto-isolated TL431 loop, and transformer demagnetization detection. According to the Microchip PIC16F785 datasheet, the 14-bit PWM resolution with asynchronous feedback supports valley switching that reduces switching losses by 5 to 10 percent compared with fixed-frequency CCM. Routing the 8-bit ADC to the current-sense op-amp output allows digital cycle-by-cycle current limiting on top of the analog comparator hardware limit.
Empfohlen
LED Lighting Drivers and Analog Dimming
The PIC16F785's combination of two on-die op-amps, a high-speed comparator and a 14-bit PWM is well matched to digitally controlled LED-driver stages that require analog current sensing and wide dynamic-range PWM dimming. The PIC part regulates inductor current through the comparator in hardware, while the 14-bit PWM provides high-resolution logarithmic dimming from 0 to 100 percent using a 16-step dithered sequence. According to the Microchip datasheet, the nanoWatt technology keeps sleep current low enough to qualify for line-powered off-state standby regulations; the device is also certified for the operating-temperature range of industrial luminaires.
Empfohlen
Brushless DC (BLDC) and Small Motor Control
For low-power BLDC fans, pumps, and small appliance motors, the PIC16F785's dual comparators can decode back-EMF zero crossings from the floating phase while the 14-bit PWM drives the complementary outputs through an external gate driver. The 20 MHz instruction rate gives a worst-case PWM update latency near 200 ns, sufficient for 6 kRPM control loops. According to the Microchip datasheet, the EUSART enables simple UART-based control and telemetry, while the on-chip op-amps handle current-sense amplification without external components.
Empfohlen
Sensor Signal Conditioning and Field Transmitters
Industrial 4-20 mA field transmitters and analog sensor hubs benefit from the PIC16F785's two on-die op-amps, which enable first- and second-stage signal conditioning of bridge-type pressure or temperature sensors without external instrumentation amplifiers. The 8-bit ADC with up to 11 input channels can sweep multiple sensor inputs, while the EUSART outputs the digitized stream on a wired or wireless link. According to the Microchip datasheet, the 2.0 to 5.5 V supply range lets a single design run from a 3.3 V regulator and interface to 5 V sensors with clamping resistors.
Empfohlen
White Goods and Appliance Control Boards
Washing machines, dishwashers, range hoods, and other white-goods appliances are classic homes for the PIC16F785 because they combine motor control, user-interface scanning, and sensor feedback on a single IC. The PLCC-20 packaging tolerates the higher reflow profiles used in home-appliance production lines and provides mechanical robustness during field service. According to the Microchip datasheet, the nanoWatt modes keep standby power below 0.5 W to meet European eco-design requirements, while the dual op-amps can directly read NTC thermistors without external analog stages.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16F785T/CSD01 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16F785-I/P | PIC16F785-I/SO | PIC16F785-I/SS | PIC16F785-E/P | PIC16F785-E/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PLCC-20 | PDIP-20 | SOIC-20 | SSOP-20 | PDIP-20 | SSOP-20 |
| Program Memory (Flash) | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| Data RAM | 128 B | 128 B | 128 B | 128 B | 128 B | 128 B |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Voltage Range | 2.0 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V |
| Temperature Grade | Industrial (standard) | Industrial | Industrial | Industrial | Extended (-40C to +125C) | Extended (-40C to +125C) |
| Integrated Op-Amps + Comparators | 2 + 2 | 2 + 2 | 2 + 2 | 2 + 2 | 2 + 2 | 2 + 2 |
Wichtigste Unterscheidungsmerkmale
- Integrated dual op-amps plus dual comparators on-die (vs. PIC16F716)
- 14-bit two-phase asynchronous feedback PWM module (vs. PIC16F73)
- Complete same-family drop-in coverage (vs. PIC16F785-E/P)
Designhinweise
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin and a separate 10 uF bulk capacitor near the AVDD pin. The PIC16F785 has separate digital (VDD/VSS) and analog (AVDD/AVSS) supplies - tying them together at a single ferrite bead improves ADC noise performance by 3 to 4 LSB.
Route the ICSP clock/data pair (ICSPCLK/ICSPDAT) on pins 1 and 2 to a dedicated programming header; the ICSP and application circuit share those pins, so avoid permanent loading devices such as LEDs on them during factory programming. A 4.7 kohm pull-up on MCLR prevents spurious resets if the header is left open during normal operation.
When migrating between the PLCC-20 and SOIC-20/SSOP-20 packages, the oscillator pins (OSC1/OSC2) and the I/O numbering can differ between PIC16F785 variants. Re-validate the pinout against the specific Microchip package drawing before committing to a layout. Also note the analog ground (AVSS) must be tied to digital ground (VSS) - leaving AVSS floating triggers spurious ADC conversions.
Compliance-Informationen
Compliance values not disclosed in scraped distributor or Microchip product pages. Lifecycle is active per the Microchip PIC16F785 product page.
