PIC16C620T-20I/SO - 8-Bit 20MHz OTP MCU, 896B | Microchip
MPN: PIC16C620T-20I/SO ✗ Cuối đờiPIC16C620T-20I/SO Tóm tắt
An 8-bit microcontroller (MCU) is a programmable integrated circuit that combines a CPU, memory, and peripherals on a single die. The PIC16C family is part of Microchip's mid-range architecture and sits inside a broader hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The 'C' in PIC16C620 denotes EPROM/OTP program memory, distinguishing it from the Flash-based PIC16F family, while 'T' indicates tape-and-reel packaging and '20' specifies the 20MHz maximum oscillator frequency.
Key features include 13 digital I/O pins, one 8-bit timer/counter and one 16-bit timer/counter, a watchdog timer, power-on reset, brown-out detect/reset, an analog comparator, and a programmable voltage reference. The PIC16C620T-20I/SO operates from 2.5V to 6.0V (industrial -40C to +85C) and supports in-circuit serial programming (ICSP) through the RB6/RB7 pins. Its Harvard RISC architecture executes most instructions in a single 200ns cycle at 20MHz, delivering predictable interrupt latency for real-time control loops.
Typical applications include appliance control, security and alarm panels, automotive body electronics (non-safety), low-end remote controls, sensor interfaces, battery chargers, and small motor controllers. The integrated analog comparator and reference allow threshold detection without external components, while the 13 I/O pins can directly drive LEDs, relays, and small solenoids.
When designing with this part, ensure the supply voltage stays within the 2.5V to 6.0V window and add a 0.1uF decoupling capacitor close to VDD. Note that the 'C' EPROM/OTP variant cannot be re-programmed in-circuit after the UV window is covered; use the Flash-based PIC16F630-I/SL as a modern drop-in upgrade for new designs.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet, helping procurement and design engineers evaluate lifecycle, second-source, and modern replacement options in a single view.
Bộ thay thế dễ dàng lắp đặt cho PIC16C620T-20I/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 PIC16C620T-20I/SO (cùng hình factor và footprint) — khác nhau ở Data EEPROM, Package, Timers, Analog Comparator, Core Architecture.
PIC16C620T-04I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C620-20E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F630-I/SL
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C620T-20I/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit Harvard RISC |
| Series | PIC16C620 (PIC16C family) |
| Program Memory Type | EPROM/OTP (One-Time Programmable) |
| Program Memory Size | 896 bytes (512 x 14 words) |
| Data RAM | 80 bytes |
| Data EEPROM | Not present |
| Maximum CPU Frequency | 20MHz |
| Instruction Cycle Time | 200 ns at 20MHz |
| Operating Voltage (VDD) | 2.5 V to 6.0 V |
| I/O Pins | 13 |
| Timers | 1 x 8-bit, 1 x 16-bit |
| Analog Comparator | Yes (2) |
| Watchdog Timer (WDT) | Yes |
| Brown-out Reset (BOR) | Yes |
| Power-On Reset (POR) | Yes |
| In-Circuit Serial Programming (ICSP) | Yes (RB6/RB7) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, 'I') |
| Hộp | 18-SOIC (0.295", 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16C620T-20I/SO
| Chân 1 | RA2 — GPIO port A bit 2 / analog input |
| Chân 2 | RA3 — GPIO port A bit 3 / analog input |
| Chân 3 | RA4/T0CKI — GPIO port A bit 4 / Timer0 clock input (open-drain) |
| Chân 4 | MCLR/VPP — Master clear reset (active low) / programming voltage |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — GPIO port B bit 0 / external interrupt |
| Chân 7 | RB1 — GPIO port B bit 1 |
| Chân 8 | RB2 — GPIO port B bit 2 |
| Chân 9 | RB3 — GPIO port B bit 3 |
| Chân 10 | RB4 — GPIO port B bit 4 |
| Chân 11 | RB5 — GPIO port B bit 5 |
| Chân 12 | RB6/PGC — GPIO port B bit 6 / ICSP clock |
| Chân 13 | RB7/PGD — GPIO port B bit 7 / ICSP data |
| Chân 14 | VDD — Positive supply voltage (2.5V to 6.0V) |
| Chân 15 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 16 | OSC1/CLKIN — Oscillator input / clock in |
| Chân 17 | RA0 — GPIO port A bit 0 / analog comparator input |
| Chân 18 | RA1 — GPIO port A bit 1 / analog comparator input |
Ứng dụng tiêu biểu
PIC16C620T-20I/SO phù hợp cho 7 Áp dụngs: Appliance Control Boards, Security and Alarm Panels, Automotive Body Electronics (Non-Safety), Remote Controls and IR Transmitters, Sensor Signal Conditioning, Battery Chargers and Power Management, Small Motor and Solenoid Drivers.
Appliance Control Boards
The PIC16C620T-20I/SO's 13 I/O pins, integrated analog comparators, and 5V operating range make it a strong fit for white-goods control boards such as washing-machine timers, dishwasher controllers, and microwave-oven user interfaces. Its 200ns instruction cycle supports real-time debouncing of mechanical keypads and direct LED/relay drive at low BOM cost. The EPROM/OTP memory holds the appliance firmware permanently, eliminating field reprogramming risk in harsh consumer environments where Flash bit-rot could occur. The watchdog timer and brown-out reset protect against mains brown-outs common in motor-driven loads. With the industrial -40C to +85C temperature grade, the part survives under-cabinet heat soak in kitchen installations.
Được đề xuất
Security and Alarm Panels
The PIC16C620T-20I/SO suits legacy PIR-sensor alarm panels and entry-keypad controllers where the 13 I/O scan a 4x4 matrix, drive a piezo buzzer, and read analog loop supervision via the on-chip comparators. The 2.5V to 6.0V VDD range accommodates battery-backup systems running from 3x AA cells, while the low-power sleep mode (typical <1uA) extends backup runtime during AC mains loss. Brown-out reset and watchdog timer provide the fault-recovery robustness that UL-listed alarm panels require. The OTP memory prevents field firmware tampering, a security advantage in access-control products where end-users must not be able to reflash the controller. The industrial temperature grade covers indoor wall-mount installations in unconditioned spaces.
Được đề xuất
Automotive Body Electronics (Non-Safety)
For non-safety automotive body modules such as interior lighting controllers, mirror-adjust drivers, and seat-position memory, the PIC16C620T-20I/SO's 13 I/O pins drive LEDs and H-bridge pre-drivers while the 16-bit timer generates PWM for motor speed control. The integrated comparator enables current-limit sensing without an external op-amp, reducing PCB area. Although not AEC-Q100 qualified, the industrial temperature grade suffices for cabin-mounted modules. The 20MHz instruction rate delivers the timing resolution needed for LIN-bite software UART emulation in low-cost body nodes. Engineers transitioning to AEC-Q100-qualified designs should migrate to PIC16F1823-I/SL or PIC16F1824-I/SL, both pin-compatible with the PIC16C620 footprint in 18-SOIC.
Được đề xuất
Remote Controls and IR Transmitters
The PIC16C620T-20I/SO powers low-end IR remote controls for TVs, set-top boxes, and ceiling fans thanks to its ultra-low sleep current (sub-1uA), 13 I/O for keypad scanning and LED drive, and 16-bit timer for accurate 38kHz carrier generation. The 5V operating range supports two-AAA-cell designs with a boost converter, while the 2.5V minimum extends battery life when cells weaken. OTP memory locks the protocol code to a single SKU without external protection. Brown-out reset prevents corrupted IR frames when battery voltage sags during button presses. The industrial -40C to +85C grade survives automotive cabin and outdoor patio use for ceiling-fan controls.
Được đề xuất
Sensor Signal Conditioning
For thermistor, photodiode, and Hall-sensor signal-conditioning front-ends, the PIC16C620T-20I/SO uses its two analog comparators to generate window-detect outputs without an external op-amp. The 5V VDD accommodates standard sensor bridges, and the 13 I/O provide ample headroom for multiplexed sensor arrays. Its 200ns instruction cycle samples at rates up to 5MHz equivalent for periodic sensor scanning. The brown-out detector ensures clean reset behavior when sensor power is interrupted, preventing latch-up in H-bridge feedback loops. Industrial temperature grade suits outdoor HVAC and refrigeration sensors where the controller sits adjacent to the thermistor well.
Được đề xuất
Battery Chargers and Power Management
The PIC16C620T-20I/SO runs as the supervisor MCU in linear and switch-mode NiCd/NiMH/Li-ion chargers, using its analog comparators to monitor charge current and battery voltage while 16-bit timer PWM regulates the charge cycle. The 2.5V to 6.0V VDD range suits single- and two-cell Li-ion packs with protection FETs. Brown-out reset protects the cell from over-discharge when the load shorts. The OTP memory locks the charge algorithm to a specific cell chemistry without risk of end-user corruption. Industrial -40C to +85C covers commercial charging environments. Production engineers should evaluate PIC16F690-I/SL for new designs needing Flash flexibility for firmware tuning per cell chemistry.
Được đề xuất
Small Motor and Solenoid Drivers
For small brushed-DC motor and solenoid control, the PIC16C620T-20I/SO delivers PWM via the 16-bit timer at frequencies up to 50kHz, with the 8-bit timer handling current-sense blanking. Its 13 I/O can simultaneously drive a half-bridge pre-driver, read encoder feedback, and monitor a thermistor. The 5V VDD with 6.0V max survives 12V automotive load-dump transients when paired with a TVS clamp. OTP memory locks the motor-startup profile for safety-critical actuators where end-user reprogramming must be prevented. Industrial temperature grade supports under-hood and outdoor industrial actuator enclosures where the controller may operate adjacent to the motor windings.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C620T-20I/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 | PIC16C620T-04I/SO | PIC16C620T-20/SS | PIC16C620AT-20/SS | PIC16C620A-20I/SS | PIC16C620-20E/SO | PIC16F630-I/SL |
|---|---|---|---|---|---|---|---|
| Package | 18-SOIC (0.295", 7.50 mm) | 18-SOIC (0.295", 7.50 mm) - same | 20-SSOP | 20-SSOP | 20-SSOP | 18-SOIC (0.295", 7.50 mm) - same | 18-SOIC (0.295", 7.50 mm) - pin-compatible |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max CPU Frequency | 20 MHz | 4 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Program Memory Type | OTP/EPROM (896B) | OTP/EPROM (896B) | OTP/EPROM (896B) | OTP/EPROM (896B) | OTP/EPROM (896B) | OTP/EPROM (896B) | Flash (1024 words) |
| Operating Voltage | 2.5V to 6.0V | 2.5V to 6.0V | 2.5V to 6.0V | 2.5V to 6.0V | 2.5V to 6.0V | 2.5V to 6.0V | 2.0V to 5.5V |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Commercial 0C to +70C | Commercial 0C to +70C | Industrial -40C to +85C | Extended -40C to +125C | Industrial -40C to +85C |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 | 12 |
| In-Circuit Re-programmable | No (OTP) | No (OTP) | No (OTP) | No (OTP) | No (OTP) | No (OTP) | Yes (Flash) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
Bảo phân biệt quan trọng
- Highest speed rating in the PIC16C620 family at 20MHz (vsPIC16C620T-04I/SO)
- Industrial temperature grade vs commercial-only same-package variants (vsPIC16C620T-20/SS)
- OTP memory vs Flash on the modern PIC16F replacement (vsPIC16F630-I/SL)
- Extended temperature option exists within the same part family (vsPIC16C620-20E/SO)
Ghi chú thiết kế
Add a 0.1uF ceramic decoupling capacitor within 5mm of the VDD pin (pin 14) and a bulk 10uF tantalum or aluminum cap on the supply rail. The PIC16C620T-20I/SO draws brief inrush currents during oscillator start-up and ADC reference switching that can glitch VDD if not decoupled, causing spurious brown-out resets. For battery applications, place a 100-ohm resistor in series with VDD to limit inrush and prevent cell voltage dip below the BOR threshold.
Keep the oscillator traces (OSC1/OSC2, pins 15-16) shorter than 10mm and away from high-current switching traces. The PIC16C620T-20I/SO is sensitive to capacitive loading on CLKOUT when used as a clock source for other devices - limit CLKOUT load to <30pF. Place the MCLR pull-up resistor (typically 10kΩ) close to pin 4 to prevent false triggering from ESD or motor back-EMF; add a 100nF cap to VSS if the reset line is routed near noise sources.
Do not assume the ICSP pins (RB6/RB7, pins 12-13) can be used as general-purpose outputs in production - they remain tristated during reset and may load other circuitry. For OTP programming, ensure the programming voltage on MCLR/VPP reaches 13V within 1us; slower rise times can cause programming failures. Do not connect any load to RA4 (pin 3) above 8mA - it is an open-drain output and requires an external pull-up resistor of typically 4.7kΩ to VDD.
The 18-SOIC package has a typical θJA of 75°C/W, allowing continuous operation up to ~1W internal dissipation. The PIC16C620T-20I/SO typically dissipates under 50mW at 20MHz and 5V, well within thermal limits. For high-ambient (>70°C) applications, attach a small copper pour under the SOIC land pattern on the top layer to reduce θJA by ~20%. Industrial -40C to +85C operation is guaranteed only with adequate PCB thermal management in enclosed fixtures.
The PIC16C620T-20I/SO's analog comparator inputs (RA0-RA3, pins 1-3 and 17-18) share pins with digital I/O; configure them as analog inputs by clearing the corresponding CMCON bits to disable the digital input buffer, preventing cross-talk and reducing current consumption by ~5uA per pin. When using the on-chip voltage reference, add a 0.01uF capacitor on the CVREF pin to filter reference noise; a 100mV reference ripple will couple into the comparator threshold and cause false triggers on slowly-changing sensor signals.
Thông tin tuân thủ
Compliance status not explicitly listed in provided data - marked as 'unknown' pending verification with Microchip product compliance documentation. Not AEC-Q100 qualified; industrial temperature grade only.