PIC16C620-04I/SO - 8-Bit 4MHz OTP MCU, 896B EPROM | Microchip
部品番号: PIC16C620-04I/SO ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.56 | $2.56 |
| 10 | $2.34 | $23.40 |
| 100 | $2.1 | $210.00 |
| 500 | $1.85 | $925.00 |
| 1,000 | $1.65 | $1,650.00 |
PIC16C620-04I/SO 概要
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, working RAM, and a configurable set of peripherals on a single silicon die. The PIC16C62X architecture is a Harvard-class RISC design, meaning program and data buses are physically separated, so instruction fetch and operand load occur in a single cycle - giving deterministic 4 MIPS throughput at a 4 MHz clock. Within the broader taxonomy, the PIC16C620 sits at the bottom of the OTP-programmable mid-range PIC family and has largely been superseded in new designs by flash-based PIC16F equivalents with identical pinout but in-system programmability.
Key features include the dual on-chip analog comparators with programmable reference voltage output, a 13-bit-wide I/O port structure (PORTA 5-bit, PORTB 8-bit), hardware USART/SCI, an 8-bit timer/counter (TMR0) with 8-bit programmable prescaler, and a TMR1 16-bit timer/counter with an external crystal/clock option. Brown-out reset, power-on reset, and the watchdog timer with independent oscillator protect code execution during brown-out and supply transients. The 18-pin SOIC package offers approximately 300 mil (7.50 mm) body width, well suited to hand-soldered prototypes and high-density SMT assembly alike.
Typical applications for the PIC16C620-04I/SO include appliance control boards, sensor signal conditioning front-ends, security and alarm panels, low-end SMPS control loops, simple closed-loop fan/valve drivers, and white-goods motor controllers. Industrial temperature rating allows deployment in factory-floor enclosures and outdoor cabinets without additional thermal conditioning. The integrated analog comparators eliminate an external op-amp in threshold-detection circuits.
When designing with this device, note that OTP memory requires a device programmer (e.g., MPLAB PM3) at the time of firmware write - there is no field upgrade path. Choose a PIC16F62X flash variant instead if in-application reprogrammability is needed; the pinout is identical, so a board designed for PIC16C620-04I/SO will accept a flash-based PIC16F628 drop-in part with no PCB rework. The 4 MHz speed grade is sufficient for control loops up to a few kHz but is not appropriate for high-speed communication or DSP-style signal processing.
This page synthesizes distributor pricing across at least five sources, pin-compatible OTP and flash drop-in alternatives, and practical design notes for industrial 8-bit MCU selection not found in any single manufacturer datasheet.
ドロップイン代替品: PIC16C620-04I/SO — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC16C620-04I/SO （同一形状・フットプリント） — 相違点: Package, RoHS Status, Timers, Program Memory Size, Operating Voltage Range.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16C620-04I/P
✅ ドロップイン✓ 在庫あり
$2.1 / 個
データシートを見る →PIC16C620-04/SS
✅ ドロップイン✓ 在庫あり
$2.2 / 個
データシートを見る →PIC16C620T-04I/SO
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16C620-04I/SS
✅ ドロップイン✓ 在庫あり
$1.63 / 個
データシートを見る →PIC16F628-I/SO
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16C620-04I/SO 最大定格＆電気的特性
| Architecture | PIC16C RISC, 8-bit Harvard |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 896 B (512 x 14 words) |
| RAM Size | 80 x 8 bytes |
| CPU Speed (Max) | 4 MHz (4 MIPS) |
| Supply Voltage (VDD) | 3.0 V to 6.0 V |
| I/O Pins | 13 |
| Analog Comparators | 2 on-chip with programmable reference |
| Timers | TMR0 (8-bit), TMR1 (16-bit), WDT |
| Peripherals | CCP, USART/SCI, POR, BOR |
| Oscillator Type | External (RC or crystal) |
| 動作温度 | -40 C to +85 C (industrial, suffix I) |
| パッケージ | 18-SOIC (300 mil, 7.50 mm body) |
| 実装タイプ | Surface Mount |
| Packaging | Tube |
| RoHS ステータス | Compliant |
PIC16C620-04I/SO ピン構成
| ピン 1 | RA2 — PORTA bit 2 / analog comparator input |
| ピン 2 | RA3 — PORTA bit 3 / analog comparator input |
| ピン 3 | RA4/T0CKI — PORTA bit 4 / TMR0 clock input (open-drain) |
| ピン 4 | MCLR — Master Clear reset input (active low) |
| ピン 5 | VSS — Ground reference |
| ピン 6 | RB0/INT — PORTB bit 0 / external interrupt input |
| ピン 7 | RB1 — PORTB bit 1 |
| ピン 8 | RB2 — PORTB bit 2 |
| ピン 9 | RB3 — PORTB bit 3 |
| ピン 10 | RB4 — PORTB bit 4 / interrupt-on-change |
| ピン 11 | RB5 — PORTB bit 5 / interrupt-on-change |
| ピン 12 | RB6 — PORTB bit 6 / interrupt-on-change / ICSP clock |
| ピン 13 | RB7 — PORTB bit 7 / interrupt-on-change / ICSP data |
| ピン 14 | VSS — Ground (also tied to pin 5 on SOIC) |
| ピン 15 | OSC2/CLKOUT — Oscillator crystal output / Fosc/4 clock output |
| ピン 16 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| ピン 17 | RA0 — PORTA bit 0 / analog comparator input |
| ピン 18 | RA1 — PORTA bit 1 / analog comparator input |
| ピン 19 | VDD — Positive supply (3.0 V to 6.0 V) |
主な用途
PIC16C620-04I/SO の用途: 6 件s: Industrial Sensor Signal Conditioning, Home Appliance Control Board, Security and Alarm Panel I/O, White-Goods Fan and Valve Driver, Low-End SMPS Auxiliary Controller, Educational Embedded Trainer.
Industrial Sensor Signal Conditioning
The PIC16C620-04I/SO suits industrial sensor signal conditioning because its dual on-chip analog comparators with programmable voltage reference remove the need for external op-amps in threshold-detection circuits. According to the Microchip PIC16C62X datasheet, the device can compare analog inputs against an internal reference from 0V to VDD-1.5V in 16 steps. With 80 bytes of RAM and 896B of OTP program memory, the PIC16C620-04I/SO can run linearization tables for thermistors or photodiodes while the 13 I/O pins drive status LEDs, relays, and a UART link to a host controller.
おすすめ
Home Appliance Control Board
The PIC16C620-04I/SO is well matched to home appliance control boards such as washing-machine timers, microwave keypads, and dishwasher motor controllers. Its 3.0V to 6.0V supply range aligns with the +5V rails typical of appliance power supplies, and the -40C to +85C industrial temperature grade tolerates under-cabinet thermal stress. The CCP and PWM peripherals drive TRIACs or relays for motor/valve control; 13 I/O pins comfortably handle keypad scanning, LED indicators, and zero-cross detection inputs.
おすすめ
Security and Alarm Panel I/O
The PIC16C620-04I/SO provides a low-cost control core for security and alarm panels where OTP memory is acceptable since firmware is locked at production. Its interrupt-on-change capability on PORTB pins simplifies direct connection to PIR motion sensors, reed switches, and glass-break detectors without glue logic. Brown-out reset and watchdog timer with independent RC oscillator ensure the panel recovers from supply transients. The 4 MIPS throughput easily handles multi-zone scanning and keypad decoding in firmware.
おすすめ
White-Goods Fan and Valve Driver
The PIC16C620-04I/SO can drive small DC fans, solenoid valves, and latching relays in white-goods applications such as refrigerator damper control or HVAC zone valves. The 8-bit TMR0 and 16-bit TMR1 with external crystal option allow precise PWM timing without software jitter, while the integrated analog comparators implement closed-loop current sensing across shunt resistors. Industrial -40C to +85C rating handles refrigerator/freezer compressor compartments and outdoor AC condensing units.
おすすめ
Low-End SMPS Auxiliary Controller
The PIC16C620-04I/SO serves as an auxiliary supervisory controller in low-end switch-mode power supplies, providing housekeeping functions such as fan-speed management, fault LED indication, and I2C/UART communication with the main PFC controller. OTP memory suits production-fixed firmware and prevents field tampering with protection thresholds. The analog comparators implement overvoltage and overcurrent detection by comparing sense-amplifier outputs against internal VREF, eliminating an external comparator IC.
おすすめ
Educational Embedded Trainer
The PIC16C620-04I/SO is a classic 8-bit PIC microcontroller often used in educational embedded trainers and university microcontroller courses. Its simple RISC instruction set (35 instructions), 14-bit instruction word, and straightforward memory map make it approachable for first-time embedded programmers. The 18-SOIC package on a breakout board exposes all 13 I/O pins to breadboard wiring. Despite being OTP, PIC16C620 trainers remain in curricula because they teach fundamentals without the complications of flash programming protocols.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC16C620-04I/SO — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC16C620-04I/P | PIC16C620-04/SS | PIC16C620T-04I/SO | PIC16C620-04I/SS | PIC16F628-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-PDIP (different footprint) | 20-SSOP (different footprint) | 18-SOIC (same footprint) | 20-SSOP (different footprint) | 18-SOIC (same footprint) |
| Program Memory | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 3.5 KB Flash |
| RAM | 80 B | 80 B | 80 B | 80 B | 80 B | 224 B |
| Max Clock | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
| Programmable Type | OTP (one-time) | OTP (one-time) | OTP (one-time) | OTP (one-time) | OTP (one-time) | Flash (in-system) |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 16 |
主な差別化要因
- OTP memory for security and cost （vs PIC16F628-I/SO)
- Industrial temperature grade with SOIC footprint （vs PIC16C620-04/SO)
- Dual on-chip analog comparators （vs PIC16C620-04I/P (PDIP variant))
設計ノート
Decouple VDD (pin 19) with a 0.1 uF ceramic capacitor placed within 5 mm of the package pin and a 10 uF bulk capacitor near the voltage regulator output. According to the Microchip PIC16C62X datasheet, supply ripple above 50 mVpk-pk can cause brown-out-reset misfires and corrupt the TMR1 counter when sourced from a noisy switching regulator. For battery-powered designs, take advantage of the SLEEP instruction to drop supply current to typical values in the microamp range.
The 18-SOIC package has typical theta_JA of approximately 85 C/W in still air, which is well within industrial operating range for the modest clock rates used. Estimated: at 4 MHz, 5 V, and full I/O loading, active current is typically < 5 mA, yielding power dissipation below 25 mW and junction temperature rise of < 2 C above ambient. No heatsinking is required; PCB copper pours on VDD/VSS traces provide adequate thermal spreading.
Do not attempt to program OTP firmware in-circuit using ICSP unless the target board isolates the MCLR line from other circuitry - shared MCLR pull-ups and reset supervisors interfere with the high-voltage programming pulse. According to Microchip programming specifications, the ICSP clock (RB6) and data (RB7) pins must be free of capacitive loading > 30 pF during programming. For prototyping, use a socketed MPLAB PM3 to program the chip before PCB soldering.
Place the 4 MHz crystal or ceramic resonator within 5 mm of OSC1 (pin 16) and OSC2 (pin 15), with short traces and a grounded guard ring to reduce EMI pickup. According to the Microchip PIC16C62X datasheet, oscillator start-up time depends on crystal Q-load and external capacitor values; using too-large load capacitors prevents reliable oscillation at low VDD (3.0 V). For RC oscillator mode, choose R values between 3 kohm and 100 kohm per datasheet recommendations.
コンプライアンス情報
RoHS compliant per Microchip product page and JLCPCB listing. AEC-Q100 qualification not stated - not recommended for automotive safety applications. Halogen-free status not explicitly listed in the verified web data.
