PIC16C72-20E/SO - 8-bit OTP MCU, 3.5KB ROM, 28-SOIC | Microchip
MPN: PIC16C72-20E/SO ✗ Cuối đờiPIC16C72-20E/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer that combines a processor core, program memory, working RAM, and peripheral interfaces such as timers, ADC channels, and digital I/O into one IC. Within the broader semiconductor taxonomy, an MCU sits beneath microprocessor and embedded-processor categories and above application-specific ICs; the PIC16C7X family specifically occupies the mid-range PIC16CXX architecture, which targets cost-sensitive 8-bit applications requiring integrated analog peripherals without the overhead of a full 16- or 32-bit core. The OTP variant uses one-time-programmable EPROM for program storage, making it suited for production runs where firmware is fixed at build time.
Key features of the PIC16C72-20E/SO include a 4-to-5.5 V single-supply operating range, 13 I/O pins with individual direction control, a programmable watchdog timer, an internal oscillator option, and an automotive temperature grade (the -20E suffix designates the extended operating temperature range). The RISC architecture executes most instructions in a single 200 ns instruction cycle at 20 MHz, providing deterministic throughput for real-time control loops. Brown-out detection prevents code corruption during supply voltage dips below the safe operating threshold.
The architecture uses a Harvard-style memory organization with separate program and data buses, which allows instruction fetch and operand access to occur in the same cycle. The integrated ADC supports successive-approximation conversion across 13 input channels, multiplexed onto a single sample-and-hold, enabling direct interface to potentiometers, sensor bridges, and battery monitoring nodes. The SOIC-28 (300 mil) package provides a 0.300 inch body width compatible with standard surface-mount assembly.
Typical applications for the PIC16C72-20E/SO include automotive body controllers, HVAC damper drivers, simple sensor-conditioner nodes, and small appliance control boards. The combination of integrated ADC, BOR, and automotive temperature grade makes it a common choice for under-hood and dashboard subsystems where external analog components would otherwise add cost and board area.
When designing with this device, allocate at least four I/O pins for in-system programming or debug header access. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the supply pin to suppress switching-induced supply noise that could trigger false BOR events. The PIC16C72-20E/SO is being phased out; Microchip recommends migrating to the PIC16C72A or the PIC16F72 (Flash-based) for new designs.
This page synthesizes distributor pricing, same-brand drop-in alternates, and design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C72-20E/SO — 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 PIC16C72-20E/SO (cùng hình factor và footprint) — khác nhau ở Package, Timers, Core Architecture, ADC, Program Memory Type.
PIC16C72-20/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C72-10I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C72-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C72A-20E/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F72-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F716-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C72-20E/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit RISC (mid-range PIC16CXX) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3.5 KB |
| RAM | 128 bytes |
| Tần số xung maksimum | 20 MHz |
| Instruction Cycle Time | 200 ns at 20 MHz |
| Supply Voltage (Vdd) | 4.0 V to 5.5 V |
| I/O Pins | 13 |
| ADC | 8-bit, 13 channels |
| Timers | Timer0 (8-bit, with 8-bit prescaler) |
| Brown-out Reset (BOR) | Yes |
| Watchdog Timer | Yes (software-enabled) |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (automotive / -E grade) |
| Hộp | 28-pin SOIC (300 mil) |
| Kiểu lắp đặt | Surface Mount (Gull-Wing) |
Cấu hình chân PIC16C72-20E/SO
| Chân 1 | RA2/AN2 — PORTA bit 2 / analog input channel 2 |
| Chân 2 | RA3/AN3/VREF+ — PORTA bit 3 / analog input channel 3 / ADC positive reference |
| Chân 3 | RA4/AN4 — PORTA bit 4 / analog input channel 4 |
| Chân 4 | RA5/AN5 — PORTA bit 5 / analog input channel 5 |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — PORTB bit 0 / external interrupt input |
| Chân 7 | RB1 — PORTB bit 1 |
| Chân 8 | RB2 — PORTB bit 2 |
| Chân 9 | RB3 — PORTB bit 3 |
| Chân 10 | RB4 — PORTB bit 4 |
| Chân 11 | RB5 — PORTB bit 5 |
| Chân 12 | RB6 — PORTB bit 6 |
| Chân 13 | RB7 — PORTB bit 7 |
| Chân 14 | VSS — Ground reference |
| Chân 15 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 16 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Chân 17 | RC0 — PORTC bit 0 |
| Chân 18 | RC1 — PORTC bit 1 |
| Chân 19 | RC2 — PORTC bit 2 |
| Chân 20 | RC3 — PORTC bit 3 |
| Chân 21 | RC4 — PORTC bit 4 |
| Chân 22 | RC5 — PORTC bit 5 |
| Chân 23 | RC6 — PORTC bit 6 |
| Chân 24 | RC7 — PORTC bit 7 |
| Chân 25 | VSS — Ground reference |
| Chân 26 | VDD — Positive supply voltage (4.0 V to 5.5 V) |
| Chân 27 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| Chân 28 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
Ứng dụng tiêu biểu
PIC16C72-20E/SO phù hợp cho 6 Áp dụngs: Automotive Body Controller, HVAC Damper Motor Driver, Battery Management Monitor Node, Industrial Sensor Conditioner, Small Appliance Control Board, Automotive Dashboard Indicator Driver.
Automotive Body Controller
The PIC16C72-20E/SO fits automotive body-control modules because it combines an automotive -40 C to +125 C operating range, integrated 13-channel 8-bit ADC for analog switch and sensor reads, and Brown-out Reset (BOR) for cold-crank supply dips. The 13 I/O pins drive relay coils, LED indicators, and switch-scan matrices used in door, lighting, and HVAC zones. Placed near connector pins with local 100 nF VDD decoupling, it sequences outputs via Timer0 without an external RTC IC. Compared with newer PIC32 alternatives, the PIC16C72-20E/SO wins on unit cost (around $2.71 at qty 100 as of 2026-09-18) for high-volume under-hood and dashboard subsystems where 8-bit throughput is sufficient.
Được đề xuất
HVAC Damper Motor Driver
The PIC16C72-20E/SO drives HVAC damper actuators through its 13-channel ADC reading thermistor and potentiometer position feedback, while its Timer0 generates PWM edges to commutate the BLDC damper motor. The 20 MHz instruction cycle delivers 200 ns deterministic loop times, sufficient to sample temperature, compute PI control, and update PWM duty every 1 ms. The BOR circuitry prevents erratic damper movement when the supply sags during compressor inrush. Its 28-SOIC (300 mil) footprint fits behind standard wall thermostats where 5 mm board height is the maximum.
Được đề xuất
Battery Management Monitor Node
The PIC16C72-20E/SO works well as a distributed battery-cell monitor because its 13-channel 8-bit ADC sequentially scans cell voltages through external resistor dividers, while the OTP memory stores fixed calibration constants for the battery pack. Brown-out Reset holds the MCU in reset during deep discharge to prevent erroneous cell readings. With 3.5 KB OTP, the firmware fits a state-machine for cell balancing and over-voltage shutdown. The 28-SOIC package is small enough to mount on each cell-board in a 12S Li-ion pack, where unit cost matters more than computational headroom.
Được đề xuất
Industrial Sensor Conditioner
The PIC16C72-20E/SO conditions 4-20 mA industrial sensor loops by digitizing the loop current via its 13-channel ADC and emitting an HART-compatible FSK signal through software on one of the PORTB pins. The 5.5 V maximum supply tolerance aligns with the 24 V loop fed through an external regulator, while the automotive temperature grade supports factory-floor environments up to +125 C near motors or heaters. The OTP memory protects proprietary calibration coefficients from unauthorized field modification. Its small SOIC-28 form factor integrates inside standard sensor-head enclosures.
Được đề xuất
Small Appliance Control Board
The PIC16C72-20E/SO controls small kitchen and household appliances (coffee makers, blenders, washing-machine sub-modules) by scanning capacitive touch buttons through ADC channels and triac-firing zero-cross detection on a Timer0 capture input. The 13 I/O pins multiplex LED indicators, buzzer tones, and relay coils without external logic. Brown-out Reset prevents the relay from chattering when the AC mains dips. Production volumes favor the OTP variant because firmware is frozen at build time, eliminating the cost of in-system programming headers and lowering the bill-of-materials by $0.30 versus a comparable PIC16F72 board.
Được đề xuất
Automotive Dashboard Indicator Driver
The PIC16C72-20E/SO is a strong fit for dashboard tell-tale and gauge drivers that need automotive-grade temperature tolerance, integrated ADC for fuel-level and oil-pressure sensors, and OTP program memory for tamper-resistant firmware. The 28-SOIC footprint drops onto existing gauge-cluster PCBs designed around the PIC16C7X family, allowing cost-down redesigns without board rework. Brown-out Reset prevents spurious warning-light activation during cranking. Programming production firmware into OTP also speeds up the assembly line because each unit is identical and cannot be mis-flashed in the field.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C72-20E/SO — 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 | PIC16C72-20/SO | PIC16C72-10I/SO | PIC16C72-04/SO | PIC16C72A-20E/SO | PIC16F72-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (300 mil) | 28-SOIC (300 mil) | 28-SOIC (300 mil) | 28-SOIC (300 mil) | 28-SOIC (300 mil) | 28-SOIC (300 mil) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash |
| Program Memory Size | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 10 MHz | 4 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 4.0 V to 5.5 V | 2.0 V to 5.5 V |
| ADC Channels | 13 x 8-bit | 13 x 8-bit | 13 x 8-bit | 13 x 8-bit | 13 x 8-bit | 13 x 8-bit |
| Operating Temperature | -40 C to +125 C (extended) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | 0 C to +70 C (commercial) | -40 C to +125 C (extended) | -40 C to +85 C (industrial) |
| Lifecycle Status | NRND | NRND | NRND | NRND | Active | Active |
Bảo phân biệt quan trọng
- Automotive extended temperature grade in OTP silicon (vsPIC16C72-20/SO)
- Highest clock speed in the OTP SOIC-28 family (vsPIC16C72-04/SO)
- Recommended migration path with Flash upgrade (vsPIC16F72-I/SO)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (28) and a 10 uF bulk capacitor near the supply entry point. Brown-out Reset (BOR) circuitry detects VDD drops below approximately 4.0 V and holds the part in reset; inadequate decoupling can trigger false BOR events during motor-driver switching transients, so star-ground topology is recommended with the PIC ground pin returned directly to the power-entry ground.
The 28-SOIC (300 mil) package has a thermal pad requirement identical to its lead footprint - no exposed pad is present, so standard SOIC land pattern is sufficient. Route the oscillator traces (OSC1 pin 15, OSC2 pin 16) as short as possible with a guard ring to ground, and keep analog inputs (RA0-RA5 / AN0-AN5) away from switching nodes. PORTA analog traces should be surrounded by an analog ground pour connected to VSS at a single point to reduce ADC noise coupling.
Do not assume the OTP EPROM can be re-programmed: the PIC16C72-20E/SO is one-time-programmable, so production firmware must be fully verified before programming. Programming the OTP windowed (JW) version during development is recommended, then committing the validated HEX to the SOIC version for production. Also note that the -E (extended) temperature grade is automotive-qualified per the partstack listing, not industrial - confirm supply chain documentation supports the qualification claims for your application.
Thông tin tuân thủ
RoHS, REACH, lead-free and halogen-free compliance not explicitly stated in verified distributor data - listed as [DATA_NEEDED] for RoHS in specs. AEC-Q100 not applicable (automotive temperature grade is denoted by -E suffix but formal qualification certificate should be requested from Microchip). Conflict-minerals status not stated in available data. Microchip's product page microchip.com/en-us/product/PIC16C72 carries the latest compliance documentation.
