MC908QY2ACDTE - 8-Bit HC08 MCU, 1.5KB Flash, 16-TSSOP | NXP
N.º da peça: MC908QY2ACDTE ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $4.2 | $4,20 |
| 10 | $3.78 | $37,80 |
| 100 | $3.35 | $335,00 |
| 500 | $2.95 | $1.475,00 |
| 1.000 | $2.55 | $2.550,00 |
MC908QY2ACDTE Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (FLASH for program storage and RAM for working data), peripherals, and I/O on one die. The HC08 family uses a CISC (Complex Instruction Set Computer) architecture with a Von Neumann memory map and the M68HC08 CPU core. Microcontrollers sit in the broader hierarchy of embedded processors and are the workhorses of consumer, industrial, and automotive electronics, handling tasks from button debouncing to motor control.
Key features of the MC908QY2ACDTE include 1.5KB on-chip FLASH, 128 bytes of RAM, an 8 MHz internal bus, a 5-channel 10-bit ADC, a 16-bit timer with capture/compare/PWM, and an asynchronous serial communications interface (SCI). The device supports in-circuit programming via the standard HC08 background debug mode (BDM) interface, allowing flash reprogramming without an external programmer. Operating voltage ranges from 2.7V to 5.5V cover both 3.3V and 5V rails.
The architecture is optimized for cost-sensitive applications where the M68HC08 instruction set, mature toolchain support, and small footprint outweigh the need for higher clock speeds or larger memory. The 16-TSSOP package is industry-standard, enabling hand-solderable prototypes and high-volume SMT assembly. Hardware multiplication is not supported on this core, but bit-manipulation instructions are extensive.
Typical applications include small appliance control, simple sensor interfaces, LED driving, low-end remote controls, and battery-powered consumer devices where low cost and small package footprint are paramount. The 5-channel ADC is sufficient for basic analog monitoring (temperature, battery voltage, light levels), and the PWM output can drive LEDs, buzzers, or small DC loads.
When designing with this part, note that the part is in NXP End-of-Life status per the official NXP product page. Designers should evaluate the MC9S08 family or the S08QE series as modern replacements. Ensure BDM pin connections follow HC08 conventions, and verify in-system programming voltage timing against the datasheet.
This page synthesizes distributor pricing, drop-in alternatives, lifecycle status, and practical design notes not found in the bare manufacturer datasheet, providing a single source of truth for engineers evaluating MC908QY2ACDTE.
Alternativas drop-in para MC908QY2ACDTE — 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 MC908QY2ACDTE (mesmo formato e footprint) — diferindo em Package, ADC, RAM, Supply Voltage, Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MC908QY4ACDTE
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.55 / unidade
Ver ficha técnica →MC908QY1ACDTE
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$3.05 / unidade
Ver ficha técnica →MC908QY2CDTE
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC908QY4CDTE
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC9S08QE4CWJ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$1.437 / unidade
Ver ficha técnica →MC9S08QE8CWJ
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
Consulte o preço
Ver ficha técnica →MC908QY2ACDTE Classificações máximas e características elétricas
| Core | M68HC08 CPU08 (8-bit CISC) |
| Bus Frequency | 8 MHz |
| Program Memory (Flash) | 1.5 KB (1.5K x 8) |
| RAM | 128 bytes (128 x 8) |
| Operating Voltage | 2.7 V to 5.5 V (3.3 V / 5 V) |
| I/O Pins | 13 |
| ADC | 5-channel, 10-bit |
| Timers | 1 x 16-bit (TIM, capture/compare/PWM) |
| Communication | 1 x SCI (UART) |
| Encapsulamento | 16-TSSOP (4.40 mm width) |
| Tipo de montagem | Surface Mount |
| Debug Interface | Background Debug Mode (BDM) |
| Architecture | Von Neumann |
| Temperatura de operação | -40 C to +85 C |
| Status RoHS | Compliant (per distributor listing) |
| Lifecycle | End of Life (per NXP product page) |
Configuração de pinos do MC908QY2ACDTE
| Pino 1 | PTA0/ADC0 — Port A bit 0 / ADC channel 0 |
| Pino 2 | PTA1/ADC1 — Port A bit 1 / ADC channel 1 |
| Pino 3 | VDD — Positive supply voltage (2.7V to 5.5V) |
| Pino 4 | VSS — Ground |
| Pino 5 | PTA2/ADC2 — Port A bit 2 / ADC channel 2 |
| Pino 6 | PTA3/ADC3 — Port A bit 3 / ADC channel 3 |
| Pino 7 | PTA4/ADC4 — Port A bit 4 / ADC channel 4 |
| Pino 8 | PTA5/RxD — Port A bit 5 / SCI receive |
| Pino 9 | PTA6/TxD — Port A bit 6 / SCI transmit |
| Pino 10 | PTB0/TCLK — Port B bit 0 / Timer clock input |
| Pino 11 | PTB1 — Port B bit 1 |
| Pino 12 | PTB2 — Port B bit 2 |
| Pino 13 | PTB3 — Port B bit 3 |
| Pino 14 | BKGD/MS — Background Debug Mode / Mode Select |
| Pino 15 | RESET — Active-low external reset |
| Pino 16 | IRQ — External interrupt request input |
Aplicações típicas
MC908QY2ACDTE é adequado para 7 aplicaçãos: Small Appliance Control, Battery-Powered Sensor Nodes, LED Lighting Controllers, Remote Control Transmitters, Automotive Body Controllers (legacy), Industrial Sensor Interface Modules, Educational MCU Learning Platform.
Small Appliance Control
The MC908QY2ACDTE's 1.5KB flash, 13 GPIO and 5-channel 10-bit ADC fit small appliance controllers like toasters, coffee makers, and blenders. The 16-bit timer with PWM drives heating elements and motor triac control, while the ADC reads temperature sensors (NTC thermistors) and user knob positions via potentiometers. Operating from 2.7-5.5V supports both 3.3V and 5V designs typical of mains-powered appliances with simple linear regulators. Cost-sensitive BOM justifies the mature HC08 toolchain.
Recomendado
Battery-Powered Sensor Nodes
In battery-powered sensor applications, the MC908QY2ACDTE's wide 2.7-5.5V operating range accommodates 2x AA / 3x AA cells and small lithium packs. The 8 MHz CPU08 core handles periodic sensor reads via the 5-channel ADC and transmits results through the SCI/UART to a companion radio. The 1.5KB flash stores small sensing algorithms, and the CPU08's STOP/WAIT modes enable sleep current reduction between measurements for multi-year battery life.
Recomendado
LED Lighting Controllers
The MC908QY2ACDTE drives LED lighting products via its 16-bit timer's PWM output, controlling brightness and color-mixing for RGB LEDs. Five ADC channels read ambient light sensors and user rotary encoders, while the SCI handles DMX or proprietary lighting protocol reception. The 8 MHz bus rate is sufficient for refresh-rate-stable PWM at 1 kHz with 10-bit duty resolution, and the 16-TSSOP footprint fits compact bulb and strip form factors.
Recomendado
Remote Control Transmitters
For infrared or RF remote controls, the MC908QY2ACDTE's 1.5KB flash stores button-press encoding firmware, while its timers generate precise carrier frequencies (36-40 kHz for IR). GPIO pins scan 4x4 button matrices beyond the 13-pin limit via charlieplexing. Wide 2.7-5.5V supply works directly from 2x AAA cells. The 16-TSSOP enables slim, lightweight plastic enclosures, and the HC08 core's low interrupt latency handles button debouncing reliably.
Recomendado
Automotive Body Controllers (legacy)
Historically, the MC908QY2ACDTE was used in non-safety automotive body electronics like window switches, seat adjusters, and mirror controllers. Its 5V tolerance aligns with 12V-bus regulated rails, and the 5-channel ADC monitors position sensors. While NXP has End-of-Lifed the part for new automotive designs, it remains in service fleets requiring field replacement. New designs should migrate to AEC-Q100 qualified S12Z or S08QE family parts.
Recomendado
Industrial Sensor Interface Modules
Industrial sensor interface modules benefit from the MC908QY2ACDTE's 10-bit ADC for analog signal conditioning and SCI for RS-232/RS-485 bridge communication. The CPU08 handles Modbus RTU framing and calibration coefficients stored in flash. Operating from -40C to +85C suits factory floor environments. Designers often pair this MCU with external RS-485 transceivers and isolated power supplies to build 4-20 mA loop replacement modules.
Recomendado
Educational MCU Learning Platform
Universities and training programs use the MC908QY2ACDTE on low-cost development boards to teach 8-bit embedded programming. The HC08 instruction set is simpler than ARM Cortex-M for beginners, and the BDM debug interface works with inexpensive P&E Micro USB-ML-08 programmers. Students learn ADC, timer PWM, and UART protocols in a single IC, with abundant legacy code examples and textbook references supporting the curriculum.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC908QY2ACDTE — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC908QY4ACDTE | MC908QY1ACDTE | MC908QY2CDTE | MC9S08QE4CWJ |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-TSSOP | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same |
| Core | HC08 CPU08 (8-bit) | HC08 CPU08 (8-bit) | HC08 CPU08 (8-bit) | HC08 CPU08 (8-bit) | S08 (HC08-compatible, 8-bit) |
| Bus Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz (with bus divider options) |
| Flash Memory | 1.5 KB | 4 KB | 1 KB | 1.5 KB | 4 KB |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes |
| GPIO Pins | 13 | 13 | 13 | 13 | 13 |
| ADC | 5-channel, 10-bit | 5-channel, 10-bit | 5-channel, 10-bit | 5-channel, 10-bit | 8-channel, 12-bit |
| Operating Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 5 V only | 1.8 V to 3.6 V |
| Lifecycle Status | End of Life | End of Life | End of Life | End of Life | Active |
Principais diferenciais
- End-of-Life status drives need for migration to modern S08QE family (vs MC9S08QE4CWJ)
- Same 16-TSSOP footprint across HC08Q family (vs MC908QY4ACDTE)
- Wide 2.7-5.5V supply supports 3.3V and 5V designs (vs MC908QY2CDTE)
Notas de projeto
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 3) of the MC908QY2ACDTE, with a 10 uF bulk capacitor on the same rail. The HC08 core has brief current spikes during flash programming and clock edges; insufficient decoupling can cause spurious resets or flash programming failures. Use a low-ESR ceramic for the bulk capacitor to handle the inrush current during BDM flash erase operations.
Route the BKGND/MS pin (pin 14) and RESET pin (pin 15) away from high-frequency switching traces and analog signal paths. The BDM interface is sensitive to capacitive loading above 50 pF, which can prevent reliable in-circuit programming. Place a 4.7 kohm pull-up on RESET and consider adding an external reset supervisor IC (e.g., MAX811) if the supply rise time exceeds the HC08 specification.
The MC908QY2ACDTE is End-of-Life per the official NXP product page. New production designs should target the S08QE family (e.g., MC9S08QE4CWJ) which retains HC08 code compatibility while providing active production status, more flash (4 KB), more RAM (256 B), and enhanced peripherals. Migrating firmware requires only minor linker script updates; the CPU08 instruction set is forward-compatible with the S08 core.
Informações de conformidade
RoHS compliant per DigiKey distributor listing. AEC-Q100 not applicable for non-automotive-grade MCU. Halogen-free status not explicitly stated in available data - marked unknown.
