PIC16C74A-10E/PQ - 8-bit 10MHz OTP MCU, 44-QFP | Microchip
Teilenummer: PIC16C74A-10E/PQ ⚠ Letzte Bestellmöglichkeit| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $14.5 | $14,50 |
| 10 | $13.05 | $130,50 |
| 100 | $11.6 | $1.160,00 |
| 500 | $10.15 | $5.075,00 |
| 1.000 | $8.7 | $8.700,00 |
PIC16C74A-10E/PQ Übersicht
The PIC16C7X family sits within the broader hierarchy of PIC mid-range microcontrollers, which in turn belongs to the 8-bit RISC MCU category. An 8-bit microcontroller integrates a CPU core, non-volatile program memory, working RAM, peripheral set, and I/O on a single die, enabling compact embedded designs where board space, cost, and predictable real-time response matter more than raw compute throughput. OTP versions target cost-sensitive high-volume applications where field re-programmability is not required.
Key features of the PIC16C74A include a 14-bit instruction word with single-cycle execution except for branches, an interrupt controller with context saving, power-saving SLEEP mode with typical standby current of 1 µA at 3 V / 32 kHz and 15 µA at 5 V / 4 MHz, and high sink/source drive capability of 25 mA per I/O line suitable for direct LED or relay driving. Capture/Compare/PWM modules support motor and power-control loops, while the synchronous serial port (SSP) implements both SPI and I²C master/slave operation.
Typical applications include industrial control front-ends, automotive body and HVAC modules, white-goods and appliance control boards, instrumentation, and consumer products requiring on-board A/D conversion and serial connectivity. The 44-QFP footprint also supports designs migrating from the older 40-pin PIC16C7x family when additional I/O or ADC channels are needed.
When designing with this part, remember that OTP memory cannot be reprogrammed in-circuit, so firmware verification should be completed on a windowed or flash equivalent (e.g. PIC16F74) before committing to OTP. Decoupling, oscillator layout, and MCLR reset discipline follow standard PIC mid-range guidance from the manufacturer datasheet. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für PIC16C74A-10E/PQ – 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 PIC16C74A-10E/PQ (gleiche Bauform und Footprint) – abweichend in Program Memory Size, Operating Temperature, Program Memory Type, Package, ADC.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16C74A-10/PQ
✅ Drop-In✓ Auf Lager
$5.85 / Stück
Datenblatt ansehen →PIC16C74A-04/PQ
✅ Drop-In✓ Auf Lager
$5.8 / Stück
Datenblatt ansehen →PIC16C74A-10E/L
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$7.95 / Stück
Datenblatt ansehen →PIC16C67-10E/PQ
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$9.95 / Stück
Datenblatt ansehen →PIC16C662-20/PQ
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$9.75 / Stück
Datenblatt ansehen →PIC16C65B-04/PQ
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$10.25 / Stück
Datenblatt ansehen →PIC16C74A-10E/PQ Grenzwerte & elektrische Eigenschaften
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14 words) |
| RAM Size | 192 bytes |
| CPU Core | 8-bit PIC mid-range RISC |
| Maximale Taktfrequenz | 10 MHz |
| Instruction Word Width | 14 bits |
| A/D Converter | 8-channel, 8-bit |
| I/O Pins | 33 |
| Timers | 2 x 8-bit + 1 x 16-bit |
| Capture/Compare/PWM Modules | Yes (CCP) |
| Communication Peripherals | USART (SCI), SSP (SPI / I²C), Parallel Slave Port |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Betriebstemperaturbereich | -40 °C to +125 °C (Extended) |
| I/O Sink/Source Current | 25 mA / 25 mA |
| Standby Current (3 V, 32 kHz) | 1 µA typical |
| Active Current (5 V, 4 MHz) | 15 µA typical |
| Gehäuse | 44-pin QFP (PQ) |
| Montageart | Surface Mount |
PIC16C74A-10E/PQ Pin-Konfiguration
| Pin 1 | MCLR/VPP — Master Clear reset input / programming voltage |
| Pin 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| Pin 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Pin 5 | RA3/AN3/VREF- — PORTA bit 3 / Analog input 3 / ADC VREF- |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SSP slave select |
| Pin 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel slave port read / Analog input 5 |
| Pin 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel slave port write / Analog input 6 |
| Pin 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel slave port chip select / Analog input 7 |
| Pin 11 | VDD — Positive supply (2.5 V to 6.0 V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| Pin 14 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM/capture |
| Pin 18 | RC3/SCK/SCL — PORTC bit 3 / SSP SPI clock / I²C clock |
| Pin 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port bit 0 |
| Pin 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port bit 1 |
| Pin 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port bit 2 |
| Pin 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port bit 3 |
| Pin 23 | RC4/SDI/SDA — PORTC bit 4 / SSP SPI data in / I²C data |
| Pin 24 | RC5/SDO — PORTC bit 5 / SSP SPI data out |
| Pin 25 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| Pin 26 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| Pin 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port bit 4 |
| Pin 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port bit 5 |
| Pin 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port bit 6 |
| Pin 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port bit 7 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply (2.5 V to 6.0 V) |
| Pin 33 | RB0/INT — PORTB bit 0 / External interrupt input |
| Pin 34 | RB1 — PORTB bit 1 |
| Pin 35 | RB2 — PORTB bit 2 |
| Pin 36 | RB3 — PORTB bit 3 |
| Pin 37 | RB4 — PORTB bit 4 |
| Pin 38 | RB5 — PORTB bit 5 |
| Pin 39 | RB6/PGC — PORTB bit 6 / In-circuit debugger clock |
| Pin 40 | RB7/PGD — PORTB bit 7 / In-circuit debugger data |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
Typische Anwendungen
PIC16C74A-10E/PQ ist geeignet für 6 Anwendungs: Industrial Sensor Monitoring, Appliance Control Boards, Automotive Body Electronics, Instrumentation and Data Logging, Consumer Remote Control and HMI, LED Lighting and Signage Control.
Industrial Sensor Monitoring
The PIC16C74A-10E/PQ is well-suited to industrial sensor-monitoring front-ends, where its 8-channel 8-bit ADC provides direct conditioning for thermistor, voltage, and process-variable inputs without an external converter. The 33 I/O pins handle digital sensors, keypads, and indicator LEDs, while the USART links the node to a host PLC or SCADA gateway. Operating across 2.5-6.0 V and -40 to +125 C, the part tolerates factory-floor supply variation and ambient temperature swings, while 25 mA sink/source drive directly fires relays or opto-isolators.
Empfohlen
Appliance Control Boards
In washing machines, dishwashers, and HVAC indoor units, the PIC16C74A-10E/PQ integrates the user-interface scan, motor-driver handshake via PWM, and temperature monitoring through its on-board ADC. The 10 MHz instruction cycle gives 100 ns response, fast enough for closed-loop PID on a triac-fired heater or BLDC driver. The 44-QFP PQ package drops onto standard white-goods control PCBs, and the 25 mA I/O drive eliminates driver transistors for LED bar-graph displays and buzzer signaling.
Empfohlen
Automotive Body Electronics
The PIC16C74A-10E/PQ's Extended temperature grade (-40 to +125 C) supports under-dash and body-electronics modules such as mirror controllers, seat-position memories, and HVAC blend-door actuators. The CCP modules generate PWM outputs for servo valves, while the SSP port drives SPI sensors or I/O expanders. Because the OTP PIC16C family is not AEC-Q100 qualified, this part targets non-safety automotive body applications where field re-programmability is not required.
Empfohlen
Instrumentation and Data Logging
Portable test and measurement instruments use the PIC16C74A-10E/PQ to digitize sensor inputs via the 8-bit ADC, drive an LCD character display through PORTD, and stream results via USART to a host PC. The 7 KB OTP program memory accommodates calibration tables and a basic command interpreter, while 192 B RAM serves as a sample buffer. Low standby current (1 µA typical at 3 V / 32 kHz) extends battery life between measurements, and the wide 2.5-6.0 V supply range supports both lithium and 5 V regulated rails.
Empfohlen
Consumer Remote Control and HMI
Handheld remote controllers, dimmers, and small HMI panels use the PIC16C74A-10E/PQ to scan keypads, drive IR or RF transmitters via PWM, and decode incoming IR via the Capture input. The 8-bit mid-range core is sufficient for protocol stacks like RC5, NEC, or simple proprietary codes, and the 33 I/O pins allow matrix keypads up to 8x8 without external scan logic. Low-power SLEEP mode (1 µA typical standby) maximizes battery life in remote controls.
Empfohlen
LED Lighting and Signage Control
In architectural LED lighting drivers, channel-letter signs, and stage-lighting fixtures, the PIC16C74A-10E/PQ's 25 mA sink/source I/O directly drives low-current LED strings and MOSFET gates for higher-power strings. The CCP module provides PWM dimming with 10-bit resolution at the 10 MHz clock, and the USART interfaces to DMX-512 or proprietary lighting-control protocols. The Extended temperature range supports outdoor enclosure operation, and 7 KB OTP holds channel-mapping tables for medium-complexity installations.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16C74A-10E/PQ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16C74A-10/PQ | PIC16C74A-04/PQ | PIC16C74A-10E/L | PIC16C67-10E/PQ | PIC16C662-20/PQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFP (PQ) | 44-QFP (PQ) - same | 44-QFP (PQ) - same | 44-PLCC (L) - through-hole | 44-QFP (PQ) - same | 44-QFP (PQ) - same |
| Maximum Clock Frequency | 10 MHz | 10 MHz | 4 MHz | 10 MHz | 10 MHz | 20 MHz |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| A/D Converter | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit |
Wichtigste Unterscheidungsmerkmale
- Extended temperature grade -40 to +125 C in 44-QFP (vs. PIC16C74A-10/PQ)
- 10 MHz instruction throughput vs 4 MHz (vs. PIC16C74A-04/PQ)
- Adds parallel slave port and PORTE over 40-pin variants (vs. PIC16C74B-20I/P)
Designhinweise
Decouple VDD/VSS pairs with 100 nF ceramic capacitors placed within 5 mm of each VDD pin (the 44-QFP exposes two VDD pins at positions 11 and 32, plus VSS at pins 12 and 31). For battery-backed or sleep-dominated applications, add a 10 µF bulk capacitor on the main VDD rail to handle transient inrush when the oscillator starts and peripherals wake. According to the Microchip PIC16C7X datasheet, holding MCLR high through a 10 kΩ pull-up with a 100 nF cap-to-VSS provides a clean power-on-reset ramp without false triggering.
Because the PIC16C74A is a One-Time-Programmable device, firmware cannot be patched once programmed. Prototype and verify all firmware on a windowed or flash-equivalent part (PIC16F74 or PIC16C74A JW) before committing to OTP production units. According to Microchip, OTP programming requires VPP ≈ 13 V on the MCLR/VPP pin and a verified configuration-word setting - any configuration error (e.g. wrong oscillator mode or watchdog enable) bricks the part irreversibly. Order a small over-build for engineering samples and use only verified production units on the final assembly line.
Route the OSC1/OSC2 traces short and symmetric to ground, with the crystal/ resonator located within 10 mm of the pins and guarded by a ground ring to reduce EMI susceptibility. According to the Microchip mid-range layout guidelines, the analog inputs (AN0-AN7) should be routed away from digital switching lines (PORTD parallel-slavc port, PWM outputs) and use a separate analog ground island tied to VSS at a single point. The parallel slave port on PORTD/RE0-RE2 should be length-matched if used with an external bus master.
Estimated: At the maximum Extended temperature grade of +125 °C ambient and with all 33 I/O pins sourcing 25 mA each, total I/O drive power can exceed 800 mW, raising junction temperature above the safe limit. Cap simultaneous high-current drive to roughly 8-10 pins active at 25 mA each (≈200-250 mW total) when the ambient approaches +125 °C. The 44-QFP has theta_JA of approximately 50-60 °C/W on a standard JEDEC 2S2P test board (per Microchip package thermal data); provide adequate copper pour and consider forced-air cooling in enclosed industrial cabinets.
Compliance-Informationen
The PIC16C74A OTP family is not AEC-Q100 qualified per Microchip product classification. RoHS / REACH / lead-free finish status was not confirmed in the verified web data and is marked as unknown - verify against the manufacturer datasheet or lot-specific Certificate of Compliance before procurement.
