COP8SAC720M8 - 8-Bit 10MHz OTP MCU 4KB | Texas Instruments
N.º da peça: COP8SAC720M8 ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para COP8SAC720M8 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com COP8SAC720M8 (mesmo formato e footprint) — diferindo em Core Architecture, Package, Program Memory Size.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
COP8SAC720M8/NOPB
✅ Drop-In✓ Em estoque
$4.21 / unidade
Ver ficha técnica →COP8SAC720N8
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
COP8SBE720M8
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
COP8SBR720M8
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
COP8SAC744N8
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
COP8SAC720M8 Classificações máximas e características elétricas
| 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 |
| Encapsulamento | 20-SOIC (0.295 inch / 7.50 mm width) |
| Tipo de montagem | Surface Mount |
| Power-On Reset | Yes (integrated POR) |
| Program Memory Type | OTP (One-Time Programmable) |
| Status RoHS | Compliant (NOPB suffix); non-NOPB version likely non-compliant |
| Status do ciclo de vida | Obsolete (LTB expired Jun 2, 2018 per Mouser) |
| AEC-Q100 Qualified | No (industrial/commercial) |
Configuração de pinos do COP8SAC720M8
| Pino 1 | P0.0/INT — Port 0 bit 0 / External interrupt |
| Pino 2 | P0.1 — Port 0 bit 1 / I/O |
| Pino 3 | P0.2 — Port 0 bit 2 / I/O |
| Pino 4 | P0.3 — Port 0 bit 3 / I/O |
| Pino 5 | P0.4 — Port 0 bit 4 / I/O |
| Pino 6 | P0.5 — Port 0 bit 5 / I/O |
| Pino 7 | P0.6 — Port 0 bit 6 / I/O |
| Pino 8 | P0.7 — Port 0 bit 7 / I/O |
| Pino 9 | P1.0 — Port 1 bit 0 / I/O |
| Pino 10 | P1.1 — Port 1 bit 1 / I/O |
| Pino 11 | P1.2 — Port 1 bit 2 / I/O |
| Pino 12 | P1.3 — Port 1 bit 3 / I/O |
| Pino 13 | P1.4 — Port 1 bit 4 / I/O |
| Pino 14 | P1.5 — Port 1 bit 5 / I/O |
| Pino 15 | P1.6 — Port 1 bit 6 / I/O |
| Pino 16 | P1.7 — Port 1 bit 7 / I/O |
| Pino 17 | OSC1 — Oscillator input |
| Pino 18 | OSC2 — Oscillator output |
| Pino 19 | VCC — Positive supply voltage |
| Pino 20 | GND — Ground reference |
Aplicações típicas
COP8SAC720M8 é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para COP8SAC720M8 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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) |
Principais diferenciais
- 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)
Notas de projeto
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.
Informações de conformidade
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.
