COP8SAC720M8/NOPB - 8-bit 10MHz 4KB OTP MCU | Texas Instruments
Артикул: COP8SAC720M8/NOPB ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $8.42 | $8,42 |
| 10 | $7.36 | $73,60 |
| 100 | $6.18 | $618,00 |
| 500 | $5.05 | $2.525,00 |
| 1.000 | $4.21 | $4.210,00 |
COP8SAC720M8/NOPB Обзор
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), data memory (RAM), and programmable I/O peripherals on one IC. OTP microcontrollers ship blank and are programmed once by the OEM or via a programming socket before deployment - ideal for low-cost, medium-volume production where mask-ROM NRE charges are not justified. The COP8 core uses a CISC instruction set optimized for byte-level bit manipulation, common in white-goods and appliance control.
Key features of the COP8SAC720M8/NOPB include 4KB (4K x 8) OTP program memory, 128 x 8 RAM, an integrated power-on reset circuit that holds the CPU in reset until VDD stabilizes, 16 general-purpose I/O pins multiplexed with peripheral functions, a programmable watchdog timer, and an 8-bit timer/counter. The 10MHz clock supports instruction-cycle execution in the 200ns range, sufficient for slow loop-control and user-interface scanning tasks.
Typical applications for the COP8SAC720M8/NOPB include white-goods controllers (washing machines, dishwashers, microwave ovens), HVAC thermostats, low-end remote controls, simple sensor read-out boards, and replacement of discrete 8-bit logic in legacy product lines. Its 20-SOIC footprint and wide operating voltage range make retrofit into existing COP8-based designs straightforward.
When designing with this part, note that OTP programming requires a special programmer or gang programmer prior to solder; firmware cannot be updated in the field. The part is RoHS-compliant (lead-free /NOPB suffix) per the addressable manufacturing data. Programming model and peripheral registers follow the COP8 architecture reference - consult the manufacturer datasheet for the full register map, interrupt vector table, and timing diagrams before prototyping.
Аналоги без доработки для COP8SAC720M8/NOPB — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с COP8SAC720M8/NOPB (тот же форм-фактор и посадочное место) — отличается по Package, Core Architecture, MSL Level, RoHS Status, Maximum Clock Frequency.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
COP8SAC720M8
✅ Прямая замена✓ В наличии
$2.96 / шт.
Открыть даташит →COP8SAA720M8
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
COP8SAB720M8
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ATMEGA48A-AU
✅ Прямая замена✓ В наличии
$1.78 / шт.
Открыть даташит →ATTINY44A-SSU
✅ Прямая замена✓ В наличии
$1.12 / шт.
Открыть даташит →PIC16F805-I/SO
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
COP8SAC720M8/NOPB Максимальные параметры и электрические характеристики
| Core Architecture | COP8 8-bit CISC |
| Sub-series | COP8 8SA |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 4 KB (4K x 8) |
| RAM Size | 128 x 8 bytes |
| Максимальная тактовая частота | 10 MHz |
| Number of I/O Pins | 16 |
| Supply Voltage (VDD) | 3.3 V / 5 V |
| Корпус | 20-SOIC (0.295", 7.50mm width) |
| Число выводов | 20 |
| Тип монтажа | Surface Mount |
| Power-On Reset (POR) | Yes (integrated) |
| Watchdog Timer | Yes (programmable) |
| Lead-Free / RoHS | Yes (/NOPB suffix) |
| Instruction Set | CISC, 8-bit |
Конфигурация выводов COP8SAC720M8/NOPB
| Контакт 1 | L0 / G7 — Port L bit 0 / Port G bit 7 (multiplexed digital I/O) |
| Контакт 2 | L1 — Port L bit 1 (digital I/O) |
| Контакт 3 | L2 / G6 — Port L bit 2 / Port G bit 6 |
| Контакт 4 | L3 / G5 — Port L bit 3 / Port G bit 5 |
| Контакт 5 | VDD — Positive supply (3.3V or 5V) |
| Контакт 6 | CKI / OSCIN — Clock input / crystal oscillator input |
| Контакт 7 | OSCOUT — Crystal oscillator output |
| Контакт 8 | RESET — Active-high reset input (also has internal POR) |
| Контакт 9 | GND — Ground |
| Контакт 10 | GND — Ground |
| Контакт 11 | L4 — Port L bit 4 (digital I/O) |
| Контакт 12 | L5 — Port L bit 5 (digital I/O) |
| Контакт 13 | L6 — Port L bit 6 (digital I/O) |
| Контакт 14 | L7 — Port L bit 7 (digital I/O) |
| Контакт 15 | G0 — Port G bit 0 (digital I/O) |
| Контакт 16 | G1 — Port G bit 1 (digital I/O) |
| Контакт 17 | G2 — Port G bit 2 (digital I/O) |
| Контакт 18 | G3 — Port G bit 3 (digital I/O) |
| Контакт 19 | G4 / TXD — Port G bit 4 / UART transmit (peripheral-multiplexed) |
| Контакт 20 | RXD / INT — UART receive / external interrupt (peripheral-multiplexed) |
Типичное применение
COP8SAC720M8/NOPB подходит для 6 применениеs: White-Goods / Washing Machine Controller, HVAC Thermostat and Climate Control, Low-End Remote Control / IR Transmitter, Industrial Sensor Readout / Data Acquisition Front-End, Appliance Timer / Delay Relay, Legacy Logic Replacement / Discrete-to-IC Consolidation.
White-Goods / Washing Machine Controller
The COP8SAC720M8/NOPB is well-matched to washing-machine, dishwasher, and microwave-oven controllers because its 16 I/O pins handle keypad input, LED indicators, relay/triac drive via optocouplers, and UART links to inverter or display boards. The 4KB OTP stores main wash-program logic, while the 128-byte RAM is adequate for state flags, timers, and a small keypad buffer. The integrated POR and programmable watchdog guarantee reliable recovery from AC brownouts common in mains-powered appliances. Its 10MHz clock is sufficient to scan keypads, drive multiplexed 7-segment displays, and execute PID motor-control loops at 10ms intervals without idle time. The 20-SOIC footprint mounts easily on a single-layer PCB for low-cost high-volume production.
Рекомендуется
HVAC Thermostat and Climate Control
HVAC wall thermostats benefit from the COP8SAC720M8/NOPB's compact 20-SOIC footprint and 3.3V/5V single-supply operation, simplifying power design around a small mains-to-DC adapter. Its 16 I/O support temperature I/O pins, keypad input, setpoint EEPROM emulation in OTP, and a 1-wire or UART link to a remote indoor unit. The integrated POR handles power-up cleanly after a thermostat battery replacement or brownout. The 10MHz clock runs hysteresis-based temperature loops at <1Hz, leaving cycles free for keypad debouncing and LCD refresh on a multiplexed 7-segment or character LCD. Industrial temperature grade covers the typical thermostat HVAC operating temperature range.
Рекомендуется
Low-End Remote Control / IR Transmitter
Remote controls for TVs, audio gear, fans, and motorized blinds map cleanly onto the COP8SAC720M8/NOPB: 16 I/O scan a 5x3 matrix, 4KB OTP stores the IR protocol table (NEC, RC5, SIRC), 128B RAM holds the most-recent command and timing markers. The 10MHz clock generates accurate 38kHz carrier and 560us / 1.69ms NEC pulse widths with <2% jitter. Integrated watchdog and POR make the COP8SAC720 robust against EMI from the IR LED driver. Low-cost OTP programming lets OEMs ship country-specific key maps at low NRE. Pair with a GPIO expander if more compact I/O expansion is needed.
Рекомендуется
Industrial Sensor Readout / Data Acquisition Front-End
In factory-floor sensor readouts the COP8SAC720M8/NOPB serves as a low-cost front-end digitizer: 16 I/O read 4-20mA sensors, thermocouples, or simple switch contacts, the 10MHz clock runs a 1kHz ADC sequencing loop, and 4KB OTP holds linearization polynomials plus MODBUS-RTU framing. UART transmits data to a PLC or gateway. The integrated POR holds the system in reset during ESD events common in industrial cabinets. Industrial temperature grade covers factory ambient. Its obsolete status means new designs should consider an ATmega48A-AU or STM8S003, but retrofit designs pinned to the COP8 ISA can continue to use this part during the remaining stock lifetime.
Рекомендуется
Appliance Timer / Delay Relay
Appliance timer modules (defrost timers, fan delay relays, oven pre-heat controllers) use the COP8SAC720M8/NOPB to count elapsed time, drive a relay or SSR, and indicate state on a few LEDs. The 10MHz clock gives 100us resolution, more than enough for appliance timing requirements in the seconds-to-hours range. 4KB OTP stores timing tables for different programs; 128B RAM holds the current state. The integrated POR and watchdog ensure the timer resumes correctly after a power glitch. Its 20-SOIC package fits compact appliance control boards with a small BOM.
Рекомендуется
Legacy Logic Replacement / Discrete-to-IC Consolidation
Engineers replacing dozens of 74LS logic gates, counters, and discrete timers with a single 8-bit MCU typically pick the COP8SAC720M8/NOPB because of its stable, mature toolchain and pin-compatible SO-20 footprint. It runs at 10MHz with integrated brownout handling and a programmable watchdog, eliminating the need for external reset supervisors. Typical consolidations replace 4-6 ICs (counters, gates, latches) plus discrete RC timing networks, reducing PCB area and BOM cost. Existing COP8 firmware libraries and assemblers are widely available from the long-lived COP8 ecosystem. The /NOPB suffix confirms RoHS-compliance for modern designs.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для COP8SAC720M8/NOPB — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | COP8SAC720M8 | COP8SAA720M8 | COP8SAB720M8 | ATMEGA48A-AU | ATTINY44A-SSU | PIC16F805-I/SO |
|---|---|---|---|---|---|---|---|
| Package | 20-SOIC (0.295", 7.50mm) | 20-SOIC (0.295") - same | 20-SOIC (0.295") - same | 20-SOIC (0.295") - same | 20-SOIC - same footprint, different pin function | 20-SOIC - same footprint, different pin function | 20-SOIC - same footprint, different pin function |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 4 KB OTP | 4 KB OTP | 4 KB OTP | 4 KB OTP | 4 KB Flash (reprogrammable) | 4 KB Flash (reprogrammable) | 14 KB Flash (reprogrammable) |
| RAM Size | 128 B | 128 B | 128 B | 128 B | 512 B | 256 B | 352 B |
| Maximum Clock | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 16 | 16 | 16 | 16 | 23 | 12 | 18 |
| Core ISA | COP8 CISC 8-bit | COP8 CISC 8-bit | COP8 CISC 8-bit | COP8 CISC 8-bit | AVR RISC 8-bit | AVR RISC 8-bit | PIC16 RISC 8-bit |
| Integrated POR / Watchdog | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
| Lead-Free / RoHS | Yes (/NOPB) | No (lead-bearing base part) | Yes (NOPB variant) | Yes (NOPB variant) | Yes | Yes | Yes |
Ключевые отличия
- Stable mature 8-bit CISC core with extensive legacy codebase (против ATMEGA48A-AU)
- Integrated POR plus programmable watchdog in 20-SOIC, no external reset IC needed (против PIC16F805-I/SO)
- Lead-free /NOPB variant explicitly RoHS-compliant from factory (против COP8SAC720M8 (base part, lead-bearing))
- 16 I/O pins through configurable port-L and port-G with peripheral multiplexing (против ATTINY44A-SSU)
Заметки по проектированию
The COP8SAC720M8/NOPB contains One-Time Programmable (OTP) memory that can only be programmed once - there is no in-circuit reprogramming. Engineering samples and pre-production prototypes must use the COP8SAA720M8 or COP8SAB720M8 (windowed/UV-erasable variants within the same 8SA sub-family) during code development, then transfer the verified firmware to OTP for production. Plan OTP programming into the production flow with a gang programmer or contract manufacturer.
Place a 100nF (0.1uF) ceramic decoupling capacitor as close as possible to the VDD pin (pin 5) and a 10uF bulk capacitor at the board's power entry. Connect both GND pins (9 and 10) directly to a low-impedance ground plane - do not rely on a single GND pin for high-current return paths. Use a 4-layer PCB or large ground pour on a 2-layer board for best EMI performance in mains-switching applications like white-goods controllers.
The COP8SAC720M8/NOPB operates from a single 3.3V or 5V supply. The integrated POR holds the CPU in a reset condition until VDD stabilizes above the POR threshold (~2.5V), eliminating the need for an external reset supervisor. When using the internal POR, the external RESET pin (pin 8) should be pulled up to VDD through a 10k resistor with a 100nF capacitor to ground to filter noise. Always sequence power-rails in multi-rail designs so that the COP8SAC720 VDD is stable before peripheral rails.
For crystal or ceramic-resonator clocking, keep the CKI (pin 6) and OSCOUT (pin 7) traces short (<5mm) and surrounded by ground plane to minimize EMI pickup. Place the crystal within 150mm of the MCU. If using the internal RC mode, leave the CKI/OSCOUT pins unconnected or tied to GND through a 1M resistor for noise stability. Watchdog timer should be enabled with a 1-2 second timeout to recover from software lockups in mains-noise environments.
Информация о соответствии
RoHS compliance inferred from /NOPB suffix per TI product-page conventions. REACH and conflict-minerals status not in retrieved data - verify with TI certificate of compliance. AEC-Q100 not applicable - part is industrial temperature grade, not automotive qualified.
