COP8SAC720M8 - 8-Bit 10MHz OTP MCU 4KB | Texas Instruments
부품 번호: COP8SAC720M8 ✗ 단종| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.16 | $41.60 |
| 100 | $3.69 | $369.00 |
| 500 | $3.33 | $1,665.00 |
| 1,000 | $2.96 | $2,960.00 |
COP8SAC720M8 개요
Background: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, RAM, peripherals, and I/O on one silicon die. The COP8 (Controller Oriented Processor 8-bit) is Texas Instruments' CISC 8-bit architecture featuring a register-based design optimized for embedded control. OTP microcontrollers ship with one-time-programmable memory, allowing low-volume custom firmware for cost-sensitive and secure applications where code flexibility is sacrificed for unit price.
Key features include 4KB (4K x 8) OTP program memory, 128 x 8 RAM, 16 I/O lines, on-chip Power-On-Reset eliminating external reset circuitry, and an integrated oscillator. The 20-pin SOIC Wide (0.295 inch / 7.50 mm body) gives the part MIC 0603-style PCB handling ease for through-hole-style hand-soldering and inspection, while still being surface-mount.
Technical depth: The COP8SA family uses a CISC Harvard-like architecture with separate program and data spaces, a multi-source interrupt controller, and on-chip peripherals including timers and a watchdog timer. The 10 MHz clock yields ~1 µs instruction cycle, suitable for slow control tasks, sensor signal conditioning, and human-interface key-driven panels. Operating voltage spans 2.7V to 5.5V.
Typical applications include white goods and HVAC control modules, simple sensor signal conditioning, low-cost consumer keypads, and industrial pushbutton interface boards. The MIC 5150 family of hot-swap controllers is unrelated to this MCU. This part is suited where code size below 4KB suffices and BOM cost is critical.
Design consideration: Because this part is OTP, firmware cannot be field-updated. For prototypes or low-volume runs, choose FLASH-based parts like ATMEGA48A-AU. Always verify the LTB voltage drop tolerance before substituting. The COP8SAC7D2 should not be confused with this MPN (M7D2 suffix differs).
This page synthesizes distributor pricing, lifecycle status, package detail, and drop-in alternatives not found on the manufacturer datasheet alone, providing an integrated resource for engineers sourcing the COP8SAC720M8.
드롭인 대체품: COP8SAC720M8 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: COP8SAC720M8 (동일 폼 팩터 및 풋프린트) — 차이점: Core Architecture, Package, Program Memory Size.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
COP8SAC720M8/NOPB
✅ 드롭인✓ 재고 있음
$4.21 / 개
데이터시트 보기 →COP8SAC720N8
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
COP8SBE720M8
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
COP8SBR720M8
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
COP8SAC744N8
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
COP8SAC720M8 최대 정격 & 전기적 특성
| Manufacturer | Texas Instruments |
| Product Family | COP8™ 8SA |
| Core Architecture | COP8 CISC 8-bit |
| Program Memory Size | 4 KB (4K x 8) OTP |
| RAM Size | 128 x 8 bytes |
| Maximum Clock Speed | 10 MHz |
| Number of I/O Pins | 16 |
| 패키지 | 20-SOIC (0.295 inch / 7.50 mm width) |
| 실장 유형 | Surface Mount |
| Power-On Reset | Yes (integrated POR) |
| Program Memory Type | OTP (One-Time Programmable) |
| RoHS 상태 | Compliant (NOPB suffix); non-NOPB version likely non-compliant |
| 수명 주기 상태 | Obsolete (LTB expired Jun 2, 2018 per Mouser) |
| AEC-Q100 Qualified | No (industrial/commercial) |
COP8SAC720M8 핀 구성
| 핀 1 | P0.0/INT — Port 0 bit 0 / External interrupt |
| 핀 2 | P0.1 — Port 0 bit 1 / I/O |
| 핀 3 | P0.2 — Port 0 bit 2 / I/O |
| 핀 4 | P0.3 — Port 0 bit 3 / I/O |
| 핀 5 | P0.4 — Port 0 bit 4 / I/O |
| 핀 6 | P0.5 — Port 0 bit 5 / I/O |
| 핀 7 | P0.6 — Port 0 bit 6 / I/O |
| 핀 8 | P0.7 — Port 0 bit 7 / I/O |
| 핀 9 | P1.0 — Port 1 bit 0 / I/O |
| 핀 10 | P1.1 — Port 1 bit 1 / I/O |
| 핀 11 | P1.2 — Port 1 bit 2 / I/O |
| 핀 12 | P1.3 — Port 1 bit 3 / I/O |
| 핀 13 | P1.4 — Port 1 bit 4 / I/O |
| 핀 14 | P1.5 — Port 1 bit 5 / I/O |
| 핀 15 | P1.6 — Port 1 bit 6 / I/O |
| 핀 16 | P1.7 — Port 1 bit 7 / I/O |
| 핀 17 | OSC1 — Oscillator input |
| 핀 18 | OSC2 — Oscillator output |
| 핀 19 | VCC — Positive supply voltage |
| 핀 20 | GND — Ground reference |
일반적인 애플리케이션
COP8SAC720M8 적합 용도: 6 애플리케이션s: White Goods and HVAC Control Modules, Low-Cost Consumer Keypad Interfaces, Simple Sensor Signal Conditioning, Industrial Pushbutton Interface Boards, Battery-Powered Remote Control Units, Educational Appliance and Other Legacy Designs.
White Goods and HVAC Control Modules
The COP8SAC720M8 is well-suited for white-goods and HVAC control modules because of its 4 KB OTP program memory, integrated Power-On-Reset, and 16 digital I/O lines - sufficient to read keypad inputs, drive relay drivers, and time-multiplex temperature sensors in washing machines, dishwashers, and thermostat controllers. Operating at up to 10 MHz, the COP8 core delivers ~1 µs instruction cycles, easily servicing slow control loops (1 Hz to 1 kHz). Its 20-SOIC Wide (7.50 mm) package gives clean hand-soldering access during prototyping while still supporting automated SMT lines. Designers choosing this MCU accept that firmware is one-time-burned, so firmware updates are not possible in the field - but BOM cost is minimized versus flash-based parts.
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Low-Cost Consumer Keypad Interfaces
The COP8SAC720M8 fits low-cost consumer keypad and remote-control interface boards thanks to its 16 I/O pins - enough to scan a 4x4 matrix or drive 7-segment LEDs directly. The integrated POR removes the need for an external reset supervisor, reducing BOM count. At 10 MHz clock and 128 bytes RAM, the part comfortably debounces keys, drives piezo buzzers, and runs simple state machines without external memory. The 4 KB OTP memory holds fixed function code; security is critical for volumes above 10K units where reverse-engineering risk matters. Its wide-body 20-SOIC gives robust factory-line rework yields.
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Simple Sensor Signal Conditioning
The COP8SAC720M8 serves as a low-cost sensor signal-conditioning MCU where 4 KB of code suffices to implement digital filtering, linearization, and threshold logic. The 10 MHz clock is sufficient to oversample slow analog signals (temperature, humidity, gas) at hundreds of Hz, while the 16 I/O lines multiplex multiple sensor channels through an analog MUX. Integrated POR eliminates a startup-glitch window in fog regions. The 20-SOIC Wide package handles thermal stress in industrial enclosures. Note: this part lacks integrated ADC; pair with an external ADC like ADS1118QDGSRQ1 for analog sensor chains.
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Industrial Pushbutton Interface Boards
The COP8SAC720M8 suits industrial pushbutton interface boards - control panels where each button triggers a digital output and LED status indication. Its 16 I/O pins handle 8 buttons + 8 status LEDs without external glue logic. The integrated Power-On-Reset gives clean startup in 24V industrial bus systems (regulated down to 5V). The OTP memory locks firmware against field modification, preventing operator tampering. The wide-body 20-SOIC tolerates factory-floor vibration and thermal cycling better than QFN equivalents. Where firmware update is needed (rare in industrial panels), pair with a flash-based modern MCU and rail via the rail.
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Battery-Powered Remote Control Units
The COP8SAC720M8 fits battery-powered remote control units where 4 KB OTP holds the fixed IR/RF transmission protocol. The 16 I/O lines support a 4x4 keypad plus IR LED driver, while integrated POR eliminates external reset components. At 10 MHz, the MCU spends most of its time in sleep mode, waking only on keypad interrupt - critical for coin-cell applications. The 20-SOIC Wide package allows hand-rework during prototype builds. Drawback versus flash MCUs is inability to update the protocol - acceptable for closed ecosystems where the protocol is fixed for the product lifetime.
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Educational Appliance and Other Legacy Designs
The COP8SAC720M8 remains useful in educational appliance and other legacy designs where the COP8 instruction set is already taught or where migration to modern flash MCUs is not cost-justified. The COP8 CISC architecture has a flat learning curve for students learning bare-metal embedded design. The 20-SOIC Wide package is breadboard-friendly for educational kits. Designers should note that the LTB expired in 2018, so new educational designs should pair this with a flash-based modern MCU like ATTINY44A-SSU. The COP8SAC720M8 is best reserved for maintenance of existing designs.
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추천 제품 요약
엔지니어링 참조 데이터: COP8SAC720M8 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | COP8SAC720M8/NOPB | COP8SAC720N8 | COP8SBE720M8 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 20-SOIC Wide (7.50 mm) | 20-SOIC Wide (7.50 mm) - same | 20-SOIC Narrow (5.30 mm) | 20-SOIC Wide (7.50 mm) - same |
| Program Memory | 4 KB OTP | 4 KB OTP | 4 KB OTP | 4 KB OTP |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Max Clock | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| I/O Pins | 16 | 16 | 16 | 16 |
| Lead Finish | SnPb (non-RoHS) | Pb-free matte-tin (RoHS) | SnPb (non-RoHS) | SnPb (non-RoHS) |
| Lifecycle Status | Obsolete (LTB 2018) | Obsolete (LTB 2018) | Obsolete (LTB 2018) | Obsolete (LTB 2018) |
주요 차별점
- Wide-body 20-SOIC (7.50 mm) for hand-soldering ease (vs COP8SAC720N8 (narrow 5.30 mm body))
- Highest RAM density in the 4 KB OTP 8SA family (vs COP8SAA5 (64 bytes RAM))
- Integrated Power-On-Reset eliminates external reset IC (vs Bare COP8 cores without POR)
설계 노트
Critical: this part is OTP (One-Time Programmable) - firmware cannot be erased or updated after the initial burn-in. For development and prototyping, use a flash-based modern MCU like the ATMEGA48A-AU or ATTINY44A-SSU; only migrate to the COP8SAC720M8 once the firmware is final and production volumes justify the unit-cost savings. Always verify firmware in a windowed/EPROM version of the COP8SA family before committing to the OTP mask.
Power supply design: The COP8SAC720M8 requires a clean regulated 2.7V to 5.5V supply rail. Place a 100 nF decoupling capacitor close to the VCC pin (pin 19) and a 10 µF bulk capacitor at the regulator output. The integrated Power-On-Reset holds the MCU in reset until VCC stabilizes, but a slow-rising supply can extend reset time beyond design budget - use a supervisor or ensure regulator rise time is < 50 ms.
Thermal: at 10 MHz clock and typical 5V supply, the COP8SAC720M8 draws under 10 mA active current, well below thermal stress limits of the 20-SOIC Wide package (θJA ~85 °C/W). Estimated: at 25 °C ambient and 10 mA active, junction temperature rise is < 2 °C above ambient. No thermal management is required for normal commercial/industrial use; ensure ambient does not exceed 70 °C if no airflow is present.
PCB layout: route the oscillator traces (OSC1/OSC2, pins 17-18) short and symmetric, with ground guard ring if possible. Keep high-current switching traces (relay drivers, LED drivers) away from the oscillator. The 20-SOIC Wide package tolerates 0.5 mm trace clearance standard ruleset, with no via-in-pad requirements. For EMI-sensitive applications, place a 100 nF cap directly at each port pin driving long cables.
규정 준수 정보
Base COP8SAC720M8 is non-RoHS (SnPb finish). The /NOPB variant is RoHS compliant (Pb-free matte-tin). REACH compliance per TI product declaration. Not AEC-Q100 qualified - industrial/commercial only.
