PIC16C73A-04E/SP - 8-bit OTP MCU, 4MHz, 28-SPDIP | Microchip
MPN: PIC16C73A-04E/SP ✓ Hoạt độngPIC16C73A-04E/SP Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/OTP/Flash), data RAM, and peripherals such as timers, communication ports, and analog inputs. The PIC16C7X family belongs to Microchip's PIC16 mid-range architecture (Harvard RISC, 14-bit instruction word), positioned in the product hierarchy as: PIC10/12/16 baseline -> PIC16 mid-range -> PIC18 enhanced mid-range -> PIC32 32-bit MCU. These MCUs are favored for deterministic real-time control, low quiescent current, and easy in-circuit serial programming.
Key features include a wide operating voltage range of 2.5 V to 6.0 V, 25 mA source/sink current per I/O, and ultra-low-power modes with 1 uA typical standby current at 3 V/32 kHz. The integrated A/D converter offers 8-bit resolution across up to 5 analog input channels, making the part suitable for mixed-signal embedded designs. Two 8-bit timer/counters plus one 16-bit timer/counter provide flexible event capture and PWM generation.
The PIC16C73A-04E/SP uses a Harvard architecture with separate code and data buses, 14-bit-wide instructions, and a 200 ns instruction cycle at 4 MHz (4 MHz oscillator with a 4:1 internal divider). The CMOS process delivers low power with 15 uA active current at 5 V/4 MHz, enabling battery-backed designs. The OTP program memory is programmed once via Microchip's ICSP (In-Circuit Serial Programming) interface.
Typical applications include appliance control panels, automotive body electronics (Extended temp grade), sensor signal conditioning with on-chip A/D, low-cost motor control via PWM, and remote sensor nodes. Its 5-channel 8-bit A/D and 22 I/Os handle small mixed-signal nodes without external ADC ICs.
When designing, verify the OTP memory cannot be re-programmed; for prototype or field-upgradable designs, choose the flash-based PIC16F73 or PIC16C73B successor recommended by Microchip. Always include a 0.1 uF decoupling capacitor between VDD and VSS placed within 5 mm of the pins.
This page synthesizes verified distributor pricing, same-family drop-in alternatives, and design notes not found on the manufacturer datasheet cover page. XAIPART recommends the PIC16C73A-04E/SP for new designs only when OTP memory is acceptable; otherwise, select the flash-based PIC16F73 successor.
Bộ thay thế dễ dàng lắp đặt cho PIC16C73A-04E/SP — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C73A-04E/SP (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Core Architecture, RoHS Status, Serial Interfaces.
PIC16C73A-04I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C73A-04/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C73B-04I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C73B-04/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C73A-20I/SP
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C73A-04E/SP Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 (Mid-range, 8-bit) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14 instructions) |
| Data RAM | 192 bytes |
| Data EEPROM | Not present (0 bytes) |
| Maximum CPU Frequency | 4 MHz |
| Instruction Cycle Time | 200 ns @ 4 MHz |
| Operating Voltage Range | 2.5 V to 6.0 V |
| I/O Pins | 22 |
| A/D Converter | 8-bit, 5 channels |
| Timers | Two 8-bit + one 16-bit timer/counter |
| I/O Sink/Source Current | 25 mA / 25 mA per pin |
| Active Current (5V, 4MHz) | 15 uA typical |
| Standby Current (3V, 32kHz) | 1 uA typical |
| Nhiệt độ hoạt động | -40C to +125C (Extended, 'E' suffix) |
| Hộp | 28-SPDIP (Skinny Plastic DIP, 0.300 in) |
| Kiểu lắp đặt | Through-Hole (THT) |
| Kiểu lắp đặt | Through-Hole |
| Package Code | DIP |
| Number of Terminals | 28 |
| Trạng thái RoHS | Non-Compliant (contains lead - SPDIP package) |
Cấu hình chân PIC16C73A-04E/SP
| Chân 1 | MCLR/VPP — Master Clear (reset) input / programming voltage input |
| Chân 2 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
| Chân 4 | RA2/AN2 — PORTA bit 2 / analog input channel 2 |
| Chân 5 | RA3/AN3/VREF — PORTA bit 3 / analog input channel 3 / A/D voltage reference |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | RA5/AN4/SS — PORTA bit 5 / analog input channel 4 / SPI slave select |
| Chân 8 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 9 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Chân 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Chân 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 module |
| Chân 12 | RC2/CCP1 — PORTC bit 2 / CCP1 (Capture/Compare/PWM 1) |
| Chân 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Chân 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Chân 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| Chân 16 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Chân 17 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Chân 18 | VSS — Ground reference |
| Chân 19 | VSS — Ground reference |
| Chân 20 | RB0/INT — PORTB bit 0 / external interrupt input |
| Chân 21 | RB1 — PORTB bit 1 |
| Chân 22 | RB2 — PORTB bit 2 |
| Chân 23 | RB3 — PORTB bit 3 |
| Chân 24 | RB4 — PORTB bit 4 |
| Chân 25 | RB5 — PORTB bit 5 |
| Chân 26 | RB6/PGC — PORTB bit 6 / ICSP clock input |
| Chân 27 | RB7/PGD — PORTB bit 7 / ICSP data input/output |
| Chân 28 | VDD — Positive supply voltage |
Ứng dụng tiêu biểu
PIC16C73A-04E/SP phù hợp cho 6 Áp dụngs: Appliance Control Panels, Automotive Body Electronics, Industrial Sensor Signal Conditioning, Low-Cost PWM Motor Control, Remote Sensor Data Logger, Smart Home Sensor Hub.
Appliance Control Panels
The PIC16C73A-04E/SP fits appliance control panels (washing machines, microwave ovens, dishwashers) thanks to its 22 GPIO pins for keypad scanning, LED/LCD drive, and relay switching, plus the integrated 5-channel 8-bit A/D for temperature and humidity sensor readout. With 25 mA source/sink current per I/O, it can directly drive triac-interface optocouplers and indicator LEDs without external drivers. The 7 KB OTP memory holds fixed appliance firmware; the Extended -40C to +125C temperature grade survives the kitchen environment, and the 2.5 V to 6.0 V operating range matches rectified 5 V or 3.3 V supplies. Designers place 0.1 uF decoupling within 5 mm of the VDD/VSS pins and use the 16-bit timer for zero-crossing triac control. Compared with discrete logic or ASIC solutions, this part reduces BOM cost while keeping firmware programmable via ICSP during production calibration.
Được đề xuất
Automotive Body Electronics
The PIC16C73A-04E/SP is well suited to automotive body controllers (door modules, seat controllers, climate panel nodes) because its Extended -40C to +125C temperature grade covers under-dash and under-hood thermal stress. The 5-channel 8-bit A/D converter reads potentiometer inputs (dimmer, climate blend door) and thermistor sensors, while the 16-bit timer/counter captures wheel-speed or fan tach pulses. 25 mA I/O drive handles LED arrays and small relays directly. Power is typically supplied from a 12 V vehicle bus via an LDO to 5 V; the wide 2.5 V to 6.0 V input tolerates crank-dip transients. OTP memory locks the firmware permanently after production calibration. The 28-SPDIP package is preferred over SOIC for automotive-vibration environments where leaded packages withstand thermal cycling and mechanical stress better than gull-wing surface-mount parts.
Được đề xuất
Industrial Sensor Signal Conditioning
The PIC16C73A-04E/SP handles industrial sensor nodes (4-20 mA loop transmitters, pressure transducers, RTD conditioners) by combining the on-chip 5-channel 8-bit A/D, 22 GPIO pins for UART/SPI sensor interfaces, and 7 KB OTP program memory for calibration constants and linearization routines. The 16-bit timer provides accurate PWM excitation for RTD or thermocouple cold-junction compensation. With 15 uA active current at 5 V/4 MHz and 1 uA standby, the part is friendly to loop-powered 4-20 mA designs where the 3.6 mA budget must power both sensor and MCU. The Extended temperature range -40C to +125C tolerates process-control cabinet environments. Designers use the two 8-bit timers for watchdog and sample-rate generation, while ICSP allows factory calibration to write sensor-specific linearization coefficients into the OTP image.
Được đề xuất
Low-Cost PWM Motor Control
The PIC16C73A-04E/SP drives small DC brush motors, fans, and stepper motors through PWM generated by its 16-bit timer/counter module. With 25 mA I/O source/sink current, it directly interfaces to MOSFET gate drivers such as the IR2104 half-bridge driver for small BLDC or brushed DC motors used in HVAC dampers, water pumps, and small appliances. The 5-channel A/D reads back-EMF or shunt current for closed-loop speed control; the two 8-bit timers handle the watchdog and tachometer capture. The Extended -40C to +125C temperature grade and 28-SPDIP through-hole package are favored for HVAC and appliance environments where leaded parts survive thermal cycling. Designers implement commutation tables in the 7 KB OTP and tune the PWM duty cycle in firmware during production calibration.
Được đề xuất
Remote Sensor Data Logger
The PIC16C73A-04E/SP is deployed in remote sensor loggers (weather stations, environmental monitors, agricultural soil sensors) thanks to its 1 uA typical standby current at 3 V/32 kHz, which extends battery life between wake-up measurements. The on-chip A/D captures up to 5 analog channels (soil moisture, temperature, humidity, light, battery), while the 192-byte data RAM serves as a circular buffer between UART transmissions. Two 8-bit timers plus the 16-bit timer manage sleep/wake cycles, watchdog refresh, and UART baud-rate generation. The 7 KB OTP memory holds the fixed logger firmware. The Extended -40C to +125C temperature grade tolerates outdoor enclosures. For higher-volume logging, the same 28-SPDIP footprint enables migration to the flash-based PIC16F73-I/SP successor without PCB changes, simplifying field upgrades.
Được đề xuất
Smart Home Sensor Hub
The PIC16C73A-04E/SP is used in smart-home sensor hubs (thermostats, occupancy sensors, smoke detectors, CO2 nodes) because of its 22 GPIO pins for multiple sensor buses, the 5-channel 8-bit A/D for environmental sensing, and the low 15 uA active current at 5 V/4 MHz that keeps wall-powered thermostats within energy-budget limits. The 16-bit timer/counter supports IR remote receive decoding for thermostat user input, and the two 8-bit timers manage watchdog and PWM buzzer control. OTP memory secures firmware against field tampering. The Extended temperature range tolerates attic-mounted or outdoor-junction-box sensor nodes. Designers use the 28-SPDIP package for hand-solderable prototypes and field-replaceable units. The same footprint enables drop-in migration to PIC16F73-I/SP for products that later need OTA firmware updates.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C73A-04E/SP — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16C73A-04I/SP | PIC16C73A-04/SP | PIC16C73B-04I/SP | PIC16C73B-04/SP | PIC16C73A-20I/SP |
|---|---|---|---|---|---|---|
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max CPU Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz (+400%) |
| Program Memory Type | OTP (7 KB / 4K x 14) | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) |
| Data RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| I/O Pins | 22 | 22 | 22 | 22 | 22 | 22 |
| A/D Converter | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels | 8-bit, 5 channels |
| Temperature Range | -40C to +125C (Extended) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) |
Bảo phân biệt quan trọng
- Extended temperature grade for harsh environments (vsPIC16C73A-04/SP)
- Highest same-package CPU frequency in the family (vsPIC16C73A-04I/SP)
- Recommended Microchip B-revision successor (vsPIC16C73A-04/SP)
Ghi chú thiết kế
Place a 0.1 uF decoupling capacitor between VDD (pin 28) and VSS (pins 18, 19) within 5 mm of the package body, per PIC16C7X datasheet decoupling guidance. For multi-supply noise, add a 10 uF bulk tantalum or ceramic capacitor on the same VDD rail. The wide 2.5 V to 6.0 V operating range allows direct connection to a regulated 5 V or 3.3 V rail, but always include a series ferrite bead if the supply is shared with inductive loads such as relays or motors.
Route the MCLR/VPP pin (pin 1) with a 10 kohm pull-up to VDD and a 100 nF capacitor to VSS to enable ICSP programming and prevent spurious resets during voltage transients. The ICSP pins RB6/PGC (pin 26) and RB7/PGD (pin 27) must be reachable by the programming header without crossing high-current traces. Keep analog input traces (RA0-RA5) short and away from switching PWM traces on RC1/RC2 to minimize coupled noise into the 8-bit A/D converter.
OTP memory is one-time programmable; once written, the firmware cannot be updated. For prototypes or field-upgradable designs, choose the flash-based PIC16F73-I/SP successor instead. The 192-byte RAM is shared between user variables and the stack; do not allocate more than ~120 bytes to user data or stack overflow may result during deep subroutine nesting. The Extended -40C to +125C temperature grade suffix 'E' is mandatory for under-hood automotive or outdoor industrial deployments - commercial-grade PIC16C73A-04/SP will fail above +70C.
Estimated: the PIC16C73A-04E/SP in the 28-SPDIP package dissipates approximately 15 mW active at 5 V/4 MHz with all I/Os unloaded, giving negligible junction temperature rise above ambient. At maximum I/O load with all 22 pins sourcing 25 mA, total power can rise to roughly 200-300 mW; the SPDIP-28 has theta_JA of approximately 70 C/W, so junction temperature stays well within the -40C to +125C rating for normal ambient use. No heatsink is required for typical embedded applications.
Thông tin tuân thủ
SPDIP-28 package contains lead (Pb); RoHS non-compliant for new EU designs unless exemption applies. No AEC-Q100 qualification per verified data. REACH and conflict-mineral compliance per Microchip product declarations.
