PIC16C74AT-10/PT - 8-Bit OTP MCU, 7KB, 44-TQFP | Microchip
MPN: PIC16C74AT-10/PT ✗ اختتامِ زندگیPIC16C74AT-10/PT جائزہ
An 8-bit OTP microcontroller is a microcontroller whose program memory can be written once by the user using an appropriate programmer and then becomes read-only - ideal for low- to mid-volume production where mask-ROM economics are not justified. The PIC16C74A belongs to Microchip's PIC16CXX mid-range architecture, which sits hierarchically under RISC microcontroller -> microcontroller unit (MCU) -> embedded controller -> semiconductor. The advanced RISC Harvard architecture and 35 single-word instruction set deliver deterministic, mostly single-cycle execution.
Key features include 4096 x 14-bit OTP program memory, 192 bytes of RAM, 33 I/O pins shared with peripherals, an on-chip 8-bit A/D converter, two 8-bit and one 16-bit timer/counters, a synchronous/asynchronous serial port (USART/SCI), a parallel slave port, and a watchdog timer with on-chip RC oscillator for reliable operation. The 10 MHz oscillator input yields roughly 5 MIPS sustained throughput.
Typical applications span industrial automation controllers, consumer-electronics user-interface boards, automotive body and convenience subsystems (pre-CAN generations), appliance control boards, and low-cost data-acquisition front-ends. Wide third-party and reference code availability for the PIC16C family accelerates time-to-market in cost-sensitive designs.
When designing in this part, remember that OTP memory cannot be reprogrammed in-circuit; plan for code-stable prototypes before committing to masked-volume production. Ensure decoupling capacitors are placed within a few millimeters of VDD/VSS pins and respect the oscillator start-up timing during in-system programming.
کے لیے ڈراپ اِن متبادل PIC16C74AT-10/PT — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16C74AT-10/PT (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Core Architecture, Timers, Program Memory Size, A/D Converter.
PIC16C74A-10/PQ
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C74A-10/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C74A-10I/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C74A-10E/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C74A-20I/L
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C74A-10/P
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C74AT-10/PT زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Product Family | PIC16CXX mid-range 8-bit MCU |
| Series | PIC16C74A |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 4K x 14 words (7 KB) |
| RAM Size | 192 bytes |
| EEPROM Data Memory | None |
| Maximum CPU Speed | 10 MHz (5 MIPS) |
| Instruction Set | 35 single-word instructions |
| I/O Pins | 33 |
| Timers | 2 x 8-bit, 1 x 16-bit |
| A/D Converter | 8-bit, multi-channel |
| Serial Interface | USART/SCI (SCI/SPI) |
| Watchdog Timer | Yes (with on-chip RC oscillator) |
| Parallel Slave Port | Yes |
| پیکیج | 44-pin TQFP (PT) |
| RoHS اسٹیٹس | unknown |
PIC16C74AT-10/PT پن کنفیگریشن
| پن 1 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| پن 2 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| پن 3 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| پن 4 | RA3/AN3/VREF — PORTA bit 3 / analog input 3 / ADC reference |
| پن 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| پن 6 | RA5/AN4/SS — PORTA bit 5 / analog input 4 / SPI slave select |
| پن 7 | AVss — Analog ground |
| پن 8 | AVdd — Analog positive supply |
| پن 9 | OSC1/CLKIN — Oscillator input / external clock |
| پن 10 | OSC2/CLKOUT — Oscillator output / clock out |
| پن 11 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator / clock input |
| پن 12 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator / CCP2 |
| پن 13 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| پن 14 | RC3/SCK/SCL — PORTC bit 3 / I2C clock |
| پن 15 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پن 16 | RC5/SDO — PORTC bit 5 / SPI data out |
| پن 17 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| پن 18 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| پن 19 | Vss — Ground |
| پن 20 | Vdd — Positive supply |
| پن 21 | RB0/INT — PORTB bit 0 / external interrupt |
| پن 22 | RB1 — PORTB bit 1 |
| پن 23 | RB2 — PORTB bit 2 |
| پن 24 | RB3 — PORTB bit 3 |
| پن 25 | RB4 — PORTB bit 4 |
| پن 26 | RB5 — PORTB bit 5 |
| پن 27 | RB6/PGC — PORTB bit 6 / ICSP clock |
| پن 28 | RB7/PGD — PORTB bit 7 / ICSP data |
| پن 29 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| پن 30 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| پن 31 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| پن 32 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| پن 33 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| پن 34 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| پن 35 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| پن 36 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| پن 37 | Vss — Ground |
| پن 38 | Vdd — Positive supply |
| پن 39 | RE0/RD/AN5 — PORTE bit 0 / read strobe / analog input 5 |
| پن 40 | RE1/WR/AN6 — PORTE bit 1 / write strobe / analog input 6 |
| پن 41 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| پن 42 | Vss — Ground |
| پن 43 | MCLR/Vpp — Master clear reset (active low) / programming voltage |
| پن 44 | NC — Not connected (per datasheet) |
عام استعمالات
PIC16C74AT-10/PT کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Automation Control Boards, Consumer Electronics User Interface Controllers, Appliance Control Boards, Low-Cost Data Acquisition Front-Ends, Automotive Body and Convenience Subsystems, Educational and Hobbyist Embedded Platforms.
Industrial Automation Control Boards
The PIC16C74AT-10/PT's 33 digital I/O pins, integrated 8-bit A/D converter, and 5 MIPS throughput make it a strong fit for industrial PLC-style control boards. Its 7 KB OTP program memory holds mid-complexity ladder-replacement logic for sensor aggregation, relay driving, and HMI keypad scanning. Per the Microchip PIC16C7X datasheet, the integrated USART supports Modbus RTU over RS-485 with external transceivers, while the watchdog timer with on-chip RC oscillator protects against firmware lockups in long-running factory environments. OTP memory suits cost-sensitive industrial products where firmware is code-frozen at release; consider PIC16F74 for designs requiring field updates.
تجویز کردہ
Consumer Electronics User Interface Controllers
The PIC16C74AT-10/PT serves consumer electronics user-interface boards by combining 33 I/O for keypad/LED driving, an 8-bit ADC for potentiometer and battery monitoring, and a USART for host-CPU communication. Per Microchip's family datasheet, the parallel slave port allows direct connection to a host processor for command forwarding. Typical consumer UI tasks - menu navigation, backlight PWM via Timer2, IR remote decoding on INT pin - fit comfortably in 7 KB of OTP. The 44-pin TQFP supports modern SMD assembly lines, while the PIC16C74A's mature toolchain (MPLAB, Hi-Tech PICC) enables short development cycles.
تجویز کردہ
Appliance Control Boards
The PIC16C74AT-10/PT is widely deployed in appliance controllers such as washing machines, dishwashers, and HVAC dampers where its 33 I/O drive triac/relay outputs and read temperature/pressure sensors via the 8-bit ADC. The integrated USART supports diagnostic ports for service technicians, while the watchdog timer with on-chip RC ensures recovery from motor noise events. OTP memory locks the firmware against end-user modification - a security plus in appliance applications. Per the PIC16C7X datasheet, the 10 MHz clock and 35-instruction RISC core deliver deterministic cycle counts for triac zero-cross timing and PID loop execution in temperature regulation.
تجویز کردہ
Low-Cost Data Acquisition Front-Ends
The PIC16C74AT-10/PT functions as a low-cost data acquisition front-end by sampling up to 8 analog channels through its 8-bit ADC and forwarding digitized data over the USART to a host PC or gateway. Per the Microchip PIC16C7X family datasheet, the ADC's 8-bit resolution suits environmental monitoring (temperature, humidity, light) rather than precision instrumentation. The 192-byte RAM and 5 MIPS throughput sustain modest sampling rates for battery-powered sensor nodes. OTP memory locks calibration constants - critical for traceable measurement products - while the 44-pin TQFP package supports compact PCB designs.
تجویز کردہ
Automotive Body and Convenience Subsystems
The PIC16C74AT-10/PT historically powered automotive body controllers (window lifts, mirror adjusters, lighting sequencers) where its 33 I/O drive H-bridge relays and read switch inputs, with the USART linking to other ECUs. Per Microchip's datasheet, the on-chip ADC reads battery voltage and temperature sensors, while the watchdog timer guards against automotive electrical transients. Although modern vehicles migrate to CAN/LIN MCUs, the PIC16C74A's robustness and mature automotive tooling keep it in legacy aftermarket applications. Designers should note that the PIC16C74A is not AEC-Q100 qualified; AEC-Q100 parts require PIC18 K-series or dsPIC variants.
تجویز کردہ
Educational and Hobbyist Embedded Platforms
The PIC16C74AT-10/PT serves educational and hobbyist embedded projects by exposing the full PIC16 mid-range peripheral set - A/D, USART, timers, parallel slave port - in a breadboard-friendly 44-pin TQFP breakout. Per the Microchip PIC16C7X datasheet, the 35-instruction RISC architecture is ideal for teaching core MCU concepts (I/O, interrupts, timers, ADC) without overwhelming beginners. OTP memory adds a teaching constraint: students must debug code carefully before programming the production chip. The mature MPLAB IDE, Hi-Tech PICC compiler, and abundant online PIC16C tutorials make the PIC16C74AT-10/PT a familiar training platform in university embedded courses.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16C74AT-10/PT — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16C74A-10/PQ | PIC16C74A-10/L | PIC16C74A-10I/L | PIC16C74A-20I/L | PIC16C74A-10/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT) | 44-pin MQFP (PQ) - same pin count | 44-pin PLCC (L) | 44-pin PLCC (L) | 44-pin PLCC (L) | 40-pin PDIP (P) |
| Program Memory | 7 KB OTP (4K x 14) | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| Maximum CPU Speed | 10 MHz (5 MIPS) | 10 MHz (5 MIPS) | 10 MHz (5 MIPS) | 10 MHz (5 MIPS) | 20 MHz (5 MIPS) | 10 MHz (5 MIPS) |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| A/D Converter | 8-bit, multi-channel | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit |
اہم امتیازی خصوصیات
- OTP-based security and lockability (بمقابلہPIC16F74 flash variant)
- TQFP-44 surface-mount package (بمقابلہPIC16C74A-10/P (PDIP-40))
- Mature PIC16 mid-range toolchain (بمقابلہPIC18 family)
ڈیزائن نوٹس
The PIC16C74AT-10/PT requires a stable +5V (typical) supply with decoupling capacitors placed within a few millimeters of each VDD/VSS pin pair. Per Microchip's PIC16C7X datasheet, use 100 nF ceramic decoupling on every VDD pin and a bulk 10 uF tantalum or ceramic on the board's main supply rail. AVdd and AVss should be filtered separately from digital Vdd/Vss to keep ADC readings clean; a ferrite bead between digital and analog supplies is recommended. The MCLR pin needs a 10 kohm pull-up to VDD with a 100 nF cap to ground for proper reset behavior.
OTP (One-Time Programmable) memory can be written only once per device - any firmware bug in the production hex file cannot be patched in the field. Plan for rigorous code validation, including MPLAB simulator runs and prototype verification on flash-equivalent parts (PIC16F74) before committing to OTP programming. Ensure the oscillator start-up timer (OST) is accounted for during in-system programming sequences, and that configuration fuses (watchdog, oscillator mode, code protection) are correctly set before programming because OTP fuses cannot be changed after writing. Per the PIC16C7X datasheet, code-protect bits should be set last to allow re-verification.
When laying out the 44-pin TQFP footprint, follow Microchip's recommended land pattern with 0.8 mm pitch pads and a thermal pad strategy if expected dissipation is non-trivial. Keep the oscillator traces (OSC1/OSC2) short and surrounded by ground pour to minimize EMI pickup; route the MCLR trace away from high-frequency switching nodes. The parallel slave port pins (RD0-RD7, RE0-RE2) should be grouped together to simplify PCB routing to a host bus. Place the ICSP connector (RB6/RB7/MCLR/Vdd/Vss) at the board edge to allow in-system programming access without disassembly.
تعمیل کی معلومات
Compliance information not present in verified web data; refer to Microchip product page or datasheet for definitive RoHS/REACH status. PIC16C74A family is not AEC-Q100 qualified - automotive designs should use AEC-Q100 qualified PIC18 or dsPIC variants.