PIC16C74A-10E/L - 8-Bit 10MHz 7KB OTP MCU 44-PLCC | Microchip
MPN: PIC16C74A-10E/L ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.7618 | $10.76 |
| 10 | $10.05 | $100.50 |
| 100 | $9.35 | $935.00 |
| 500 | $8.62 | $4,310.00 |
| 1,000 | $7.95 | $7,950.00 |
PIC16C74A-10E/L Overview
An 8-bit microcontroller (MCU) is a small computer-on-a-chip containing a CPU, program memory, data RAM, and peripherals. The PIC16C family uses a Harvard RISC architecture with 35 single-word instructions, where all instructions execute in a single cycle except program branches (two cycles). This MCU category sits at the foundation of embedded control, bridging discrete logic and modern 32-bit processors, and is widely used in cost-sensitive industrial and consumer applications.
Key features include 22 I/O pins, three timer/counters, two capture/compare/PWM modules, a synchronous serial port (SSP) supporting SPI and I2C, a USART with addressable transmit/receive buffers, a parallel slave port, and an 8-bit A/D converter with 8 input channels. The device also includes a watchdog timer with its own on-chip RC oscillator for reliable operation, an in-circuit serial programming (ICSP) interface, and Power-on Reset / Brown-out Reset circuitry.
Typical applications include industrial control and instrumentation, automotive body electronics, sensor signal conditioning, motor control with PWM, smart sensor hubs, and low-cost consumer appliances. The integrated A/D and PWM peripherals allow direct interfacing to analog sensors and brushed DC or stepper motors without external glue logic, simplifying board design and reducing BOM cost.
When designing with this part, note that the '-10E' suffix denotes a 10 MHz extended temperature grade (-40C to +125C) speed rating, and the 'L' suffix identifies the 44-pin PLCC windowed/ceramic package. The OTP memory means code is programmed once and cannot be changed, making this part suitable for mature production designs rather than iterative prototyping.
Drop-in alternatives for PIC16C74A-10E/L — 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 PIC16C74A-10E/L (same form factor and footprint) — differing in Package, A/D Converter, Core, Data EEPROM, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F74-E/L
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16C74B-20E/L
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16C74A-10/L
✅ Drop-In✓ In Stock
$8.4 / Unit
View Datasheet →PIC16C74A-10E/PQ
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$8.7 / Unit
View Datasheet →PIC16C74AT-10I/L
✅ Drop-In✓ In Stock
$5.64 / Unit
View Datasheet →PIC16C74A-10E/L Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16C - 8-bit RISC (Harvard) |
| Instruction Set | 35 single-word instructions |
| Program Memory | 7 KB (4K x 14) OTP EPROM |
| RAM | 192 bytes |
| Data EEPROM | Not available (OTP device) |
| Maximum Clock Speed | 10 MHz |
| Instruction Cycle | 200 ns (4 clock cycles) |
| Supply Voltage | 4.0 V to 5.5 V |
| I/O Pins | 22 |
| A/D Converter | 8-bit, 8 channels |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Capture/Compare/PWM | 2 CCP modules |
| Serial Interfaces | SSP (SPI/I2C), USART |
| Parallel Slave Port | Yes (8-bit) |
| Package | 44-pin PLCC (J-Lead) |
| Operating Temperature | -40C to +125C (Extended, '-E' grade) |
| Windowed Package | Yes (ceramic, erasable for development) |
| ICSP Programming | Yes (In-Circuit Serial Programming) |
| Brown-out Reset | Yes |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
PIC16C74A-10E/L Pin Configuration
| Pin 1 | MCLR/VPP — Master Clear (Reset) / 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 / 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 — PORTE bit 0 / Parallel slave port read control |
| Pin 9 | RE1/WR — PORTE bit 1 / Parallel slave port write control |
| Pin 10 | RE2/CS — PORTE bit 2 / Parallel slave port chip select |
| Pin 11 | VDD — Positive supply voltage (5 V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 14 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / Capture Compare PWM 1 |
| 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 voltage (5 V) |
| Pin 33 | RB0/INT — PORTB bit 0 / External interrupt |
| 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 / ICSP clock |
| Pin 40 | RB7/PGD — PORTB bit 7 / ICSP 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) |
Typical Applications
PIC16C74A-10E/L is suitable for 6 applications: Industrial Process Control, Automotive Body Electronics, Smart Sensor Hub / Data Acquisition, Motor Control with PWM, Consumer Appliance Control, Test and Measurement Instrumentation.
Industrial Process Control
The PIC16C74A-10E/L fits industrial process-control applications because of its 8-channel 8-bit A/D converter for analog sensor reading, two CCP modules for PWM-driven valve and actuator control, and 22 I/O lines for interfacing to relays and optocouplers. Operating from -40C to +125C (extended temperature grade), the device handles plant-floor thermal stress without derating. The 35-instruction RISC core executes deterministic control loops at 200 ns per instruction, allowing 10 kHz PID update rates. A typical design uses PORTA for analog inputs from 4-20 mA loops, PORTB for digital sensors, and the USART to communicate with an HMI panel over RS-485 via a transceiver.
Recommended
Automotive Body Electronics
The PIC16C74A-10E/L's extended temperature range (-40C to +125C), 5 V operation, and integrated peripherals make it suitable for automotive body controllers including seat controllers, mirror modules, and lighting drivers. The 2 CCP modules generate PWM for DC motor speed control (window lift, seat adjust), while the A/D converter monitors current sense resistors for stall detection. The synchronous serial port (SSP) interfaces to dashboard LIN bus gateways via external transceivers. Brown-out reset and watchdog timer with dedicated RC oscillator ensure recovery from automotive electrical transients. The 44-pin PLCC package withstands the underhood thermal environment and supports wave-solder assembly.
Recommended
Smart Sensor Hub / Data Acquisition
The PIC16C74A-10E/L is well-matched to multi-channel sensor aggregation nodes. Its 8-channel 8-bit A/D converter reads temperature, pressure, humidity, or flow sensors with 20 us conversion time, while the USART streams aggregated readings to a host controller. The PIC's 192-byte RAM buffers samples between transmissions, and the SSP supports I2C/SPI sensor expansion. Brown-out reset and watchdog timer protect unattended field installations against brown-out lockups. The 22 I/O pins drive status LEDs and accept digital switch inputs. With 5 V supply tolerance, the part runs directly from regulated industrial 5 V rails without additional level shifting.
Recommended
Motor Control with PWM
The PIC16C74A-10E/L drives brushed DC motors, small stepper motors, and solenoids through its two CCP modules. Each CCP generates a 10-bit resolution PWM signal with programmable frequency and duty cycle, allowing closed-loop speed control via back-EMF sensing on the A/D converter. The 22 I/O pins drive H-bridge gate drivers directly, and the integrated parallel slave port allows a host processor to send motion commands at high speed. With 5 MIPS peak throughput at 10 MHz, the PIC handles trapezoidal commutation profiles for 3-phase brushless motors when paired with external gate drivers, while brown-out reset prevents MOSFET shoot-through during supply glitches.
Recommended
Consumer Appliance Control
The PIC16C74A-10E/L serves as the main controller in mid-range consumer appliances such as washing machines, microwave ovens, and coffee makers. The 7 KB OTP program memory stores fixed user-interface and motor-control firmware; the 8-channel A/D reads water level, temperature, and humidity sensors; the two CCP modules drive the wash motor and heater relays via PWM; and the USART interfaces to a display panel or Bluetooth module for smart connectivity. The 35-instruction RISC core delivers 5 MIPS, sufficient for multi-tasking UI + control loops, while the 44-pin PLCC package is cost-effective for high-volume production and supports automated optical inspection.
Recommended
Test and Measurement Instrumentation
The PIC16C74A-10E/L is suitable for low-cost bench instruments including digital multimeter front-ends, signal generators, and protocol analyzers. The 8-bit A/D converter provides sufficient resolution for measurement readouts, the USART streams data to a PC terminal, and the SSP communicates with LCD displays or digital potentiometers. The parallel slave port allows a host PC to download test patterns at high speed for protocol exercisers. Operating at 10 MHz with 200 ns instruction cycle, the PIC generates precise timing sequences for UART, SPI, and I2C stimulus. The windowed ceramic package supports development and firmware revision before committing to production OTP programming.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C74A-10E/L — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F74-E/L | PIC16C74B-20E/L | PIC16C74A-10/L | PIC16C74AT-10I/L |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin PLCC (J-Lead) | 44-pin PLCC (J-Lead) - same | 44-pin PLCC (J-Lead) - same | 44-pin PLCC (J-Lead) - same | 44-pin PLCC (J-Lead) - same |
| Program Memory | 7 KB OTP EPROM | 7 KB Flash (reprogrammable) | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM |
| Maximum Clock Speed | 10 MHz | 20 MHz (-E suffix is 20 MHz on PIC16F74) | 20 MHz | 10 MHz | 10 MHz |
| Operating Temperature | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) | 0C to +70C (Commercial) | -40C to +85C (Industrial) |
| A/D Converter | 8-bit, 8 channels | 8-bit, 8 channels | 8-bit, 8 channels | 8-bit, 8 channels | 8-bit, 8 channels |
| CCP Modules | 2 | 2 | 2 (10-bit PWM) | 2 | 2 |
| ICSP Programming | Yes | Yes (flash, no UV erase needed) | Yes | Yes | Yes |
| Lifecycle Status | Last-time-buy | Active | NRND | Last-time-buy | Last-time-buy |
Key Differentiators
- Windowed ceramic package enables UV erasure and reprogramming (vs PIC16C74A-10/L)
- Extended temperature grade covers industrial and automotive environments (vs PIC16C74A-10/L)
- 8-channel 8-bit A/D integrated for direct sensor interfacing (vs PIC16C73A-10/SP)
- Parallel slave port enables high-speed host communication (vs PIC16F74-E/L)
Design Notes
The PIC16C74A-10E/L draws typically 5 mA at 10 MHz and 5 V supply. Brown-out Reset should be enabled in the configuration word to reset the MCU when VDD falls below approximately 4.0 V, preventing EEPROM corruption and undefined code execution. Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pin pair (there are two VDD/VSS pairs on the 44-pin PLCC). For battery-backed applications, MCLR can be tied through a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for manual-reset debouncing.
OTP EPROM devices cannot be reprogrammed once written. For development, use the windowed ceramic variant (e.g., PIC16C74A-10/JW) and erase under UV light for 20-30 minutes before re-programming. Production programming must use a verified, locked hex file because there is no second chance. Configuration word bits (watchdog timer enable, brown-out, code protection) must be set correctly before programming; misconfiguration cannot be corrected without UV erasure.
The 44-pin PLCC footprint uses J-lead pads on 1.27 mm pitch; follow IPC-7351 PLCC-44 land pattern guidelines for hand-solder and reflow compatibility. The windowed ceramic variant has a transparent quartz lid above the die; do not place the device near heat sources or under conformal coating that would obscure UV erasure access during development. For socketed development, use a low-profile PLCC-44 test socket (e.g., 3M Textool) to allow easy device extraction during firmware iteration cycles.
The PIC16C74A-10E/L's parallel slave port (PSP) on PORTD and PORTE should be used only with nearby host processors; traces longer than 50 mm require series damping resistors (22-33 ohm) to prevent ringing at high transfer rates. The USART pins (RC6/RC7) can source/sink 25 mA per the datasheet but benefit from 1 kohm series resistors when driving long cables or external transceivers. Avoid routing analog inputs (RA0-RA5) parallel to high-frequency digital lines to minimize coupled noise into the A/D converter readings.
Compliance Information
Ceramic windowed PLCC package contains lead-bearing solder terminations and is NOT RoHS compliant. AEC-Q100 not applicable (not qualified specifically for automotive, although extended temperature grade is automotive-typical). REACH and conflict minerals status not specified in provided web data.
