MC9S08AC32MFUE - 8-Bit 40MHz 32KB Flash MCU 64-QFP | NXP
N.º da peça: MC9S08AC32MFUE ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $7.5794 | $7,58 |
| 10 | $6.84 | $68,40 |
| 100 | $6.05 | $605,00 |
| 500 | $5.42 | $2.710,00 |
| 1.000 | $4.86 | $4.860,00 |
MC9S08AC32MFUE Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and a rich set of peripherals including timers, communication interfaces, and analog blocks onto one die. Within the broader taxonomy, the MC9S08AC32 sits in the 8-bit microcontroller hierarchy, between simple 4/8-bit controllers and 32-bit Cortex-M microcontrollers. The S08AC family belongs to NXP's Flexis series of pin-compatible 8-bit / 32-bit device duos, allowing designers to migrate between bus widths without PCB rework.
Key features include a 40 MHz HCS08 CPU with background debug mode (BDM), 32 KB flash with security and flash-block protection, 2 KB RAM, an internal clock generator, a 10-bit ADC, multiple PWM timers, and serial interfaces including SPI, SCI (UART), and I2C. The device operates from a 2.7 V to 5.5 V supply, supporting both 3.3 V and 5 V system rails, and is qualified for an extended -40 C to +125 C temperature range that suits automotive and industrial environments. The 64-QFP package provides 54 programmable I/O lines, giving ample headroom for keypad, LCD, motor-control, and sensor-signal multiplexing.
Architecturally, the HCS08 core uses a von-Neumann bus with single-cycle access to flash via the 40 MHz flash controller, and the on-chip analog and timer peripherals are wired to a peripheral bus that can operate while the CPU halts in wait mode. The integrated voltage regulator, low-voltage detect (LVD), and watchdog timer with independent clock source strengthen field reliability in unattended installations.
Typical applications include automotive body controllers (window lifters, climate control, instrument clusters), industrial sensor interfaces, low-end motor drives, smart appliances, and consumer white goods. The combination of 32 KB flash and large I/O count makes it a strong fit for designs that need moderate firmware footprint plus many GPIOs.
When designing with this part, remember that the 64-QFP package has lower thermal headroom than smaller QFN packages but offers easier hand-rework and visual inspection for low-volume or automotive production lines. Designers should budget ample decoupling and follow NXP's recommended BDM connector footprint for in-circuit debugging.
This page synthesizes distributor pricing, drop-in alternatives from the same S08AC family, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para MC9S08AC32MFUE — 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 MC9S08AC32MFUE (mesmo formato e footprint) — diferindo em Package, ADC, Operating Temperature, RAM, Core.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MC9S08AW32CFUE
✅ Drop-In✓ Em estoque
$7.18 / unidade
Ver ficha técnica →MC9S08AC32CFJE
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →MC9S08AC60CFUE
✅ Drop-In✓ Em estoque
$4.05 / unidade
Ver ficha técnica →MC9S08AC16MFJE
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →MC9S12D32MFUE
✅ Drop-In✓ Em estoque
$26.4032 / unidade
Ver ficha técnica →MC9S08AC32MFUE Classificações máximas e características elétricas
| Core | HCS08 (8-bit) |
| Program Memory | 32 KB Flash |
| RAM | 2 KB |
| Maximum CPU Frequency | 40 MHz |
| Tensão de alimentação | 2.7 V to 5.5 V |
| Number of I/O Pins | 54 (38 GPIOs by package variation) |
| ADC | 10-bit |
| Communication Interfaces | SPI, SCI (UART), I2C |
| Timers | Multi-channel 16-bit + PWM |
| Watchdog | Yes (independent clock source) |
| Temperatura de operação | -40 C to +125 C |
| Encapsulamento | 64-QFP (14x14 mm) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Debug Interface | Background Debug Mode (BDM) |
Configuração de pinos do MC9S08AC32MFUE
| Pino 1 | PTE5/TCLK2 — Port E bit 5 / Timer PWM channel |
| Pino 2 | PTE4 — Port E bit 4 (GPIO) |
| Pino 3 | PTE3 — Port E bit 3 (GPIO) |
| Pino 4 | PTE2 — Port E bit 2 (GPIO) |
| Pino 5 | VDDA — Analog supply |
| Pino 6 | VSSA — Analog ground |
| Pino 7 | PTE1 — Port E bit 1 (GPIO) |
| Pino 8 | PTE0 — Port E bit 0 (GPIO) |
| Pino 9 | BKGD/MS — Background Debug Mode / Mode Select |
| Pino 10 | RESET — External reset, active low |
| Pino 11 | PTB7 — Port B bit 7 (GPIO) |
| Pino 12 | PTB6 — Port B bit 6 (GPIO) |
| Pino 13 | PTB5 — Port B bit 5 (GPIO) |
| Pino 14 | PTB4 — Port B bit 4 (GPIO) |
| Pino 15 | VSS — Digital ground |
| Pino 16 | VDD — Digital supply 2.7-5.5 V |
| Pino 17 | PTB3 — Port B bit 3 (GPIO) |
| Pino 18 | PTB2 — Port B bit 2 (GPIO) |
| Pino 19 | PTB1 — Port B bit 1 (GPIO) |
| Pino 20 | PTB0 — Port B bit 0 (GPIO) |
| Pino 21 | PTA7 — Port A bit 7 / ADC channel |
| Pino 22 | PTA6 — Port A bit 6 / ADC channel |
| Pino 23 | PTA5 — Port A bit 5 / ADC channel |
| Pino 24 | PTA4 — Port A bit 4 / ADC channel |
| Pino 25 | PTA3 — Port A bit 3 / ADC channel |
| Pino 26 | PTA2 — Port A bit 2 / ADC channel |
| Pino 27 | PTA1 — Port A bit 1 / ADC channel |
| Pino 28 | PTA0 — Port A bit 0 / ADC channel |
| Pino 29 | PTC7 — Port C bit 7 (GPIO) |
| Pino 30 | PTC6 — Port C bit 6 (GPIO) |
| Pino 31 | PTC5 — Port C bit 5 (GPIO) |
| Pino 32 | PTC4 — Port C bit 4 (GPIO) |
| Pino 33 | PTC3 — Port C bit 3 (GPIO) |
| Pino 34 | PTC2 — Port C bit 2 (GPIO) |
| Pino 35 | PTC1 — Port C bit 1 (GPIO) |
| Pino 36 | PTC0 — Port C bit 0 (GPIO) |
| Pino 37 | PTD7 — Port D bit 7 / PWM channel |
| Pino 38 | PTD6 — Port D bit 6 / PWM channel |
| Pino 39 | PTD5 — Port D bit 5 / PWM channel |
| Pino 40 | PTD4 — Port D bit 4 / PWM channel |
| Pino 41 | PTD3 — Port D bit 3 / PWM channel |
| Pino 42 | PTD2 — Port D bit 2 / PWM channel |
| Pino 43 | PTD1 — Port D bit 1 / SPI MOSI or PWM |
| Pino 44 | PTD0 — Port D bit 0 / SPI MISO or PWM |
| Pino 45 | VSS — Digital ground |
| Pino 46 | VDD — Digital supply 2.7-5.5 V |
| Pino 47 | PTH7 — Port H bit 7 (GPIO) |
| Pino 48 | PTH6 — Port H bit 6 (GPIO) |
| Pino 49 | PTH5 — Port H bit 5 / SCI Tx |
| Pino 50 | PTH4 — Port H bit 4 / SCI Rx |
| Pino 51 | PTH3 — Port H bit 3 / SDA (I2C) |
| Pino 52 | PTH2 — Port H bit 2 / SCL (I2C) |
| Pino 53 | PTH1 — Port H bit 1 (GPIO) |
| Pino 54 | PTH0 — Port H bit 0 / SPI CLK |
| Pino 55 | PTF7 — Port F bit 7 (GPIO) |
| Pino 56 | PTF6 — Port F bit 6 (GPIO) |
| Pino 57 | PTF5 — Port F bit 5 (GPIO) |
| Pino 58 | PTF4 — Port F bit 4 (GPIO) |
| Pino 59 | PTF3 — Port F bit 3 (GPIO) |
| Pino 60 | PTF2 — Port F bit 2 (GPIO) |
| Pino 61 | PTF1 — Port F bit 1 (GPIO) |
| Pino 62 | PTF0 — Port F bit 0 (GPIO) |
| Pino 63 | PTG3 — Port G bit 3 (GPIO) |
| Pino 64 | PTG2 — Port G bit 2 (GPIO) |
Aplicações típicas
MC9S08AC32MFUE é adequado para 6 aplicaçãos: Automotive Body Control Module, Industrial Sensor Interface Node, Low-End Motor Driver (BLDC / Stepper), Smart Appliance White Goods, HVAC Climate Control Panel, Consumer White-Good User Interface Board.
Automotive Body Control Module
The MC9S08AC32MFUE fits automotive body-control designs because of its 32 KB flash, 2 KB RAM, 40 MHz HCS08 CPU, and 64-QFP pinout that yields 54 programmable I/O lines for window lifters, mirror switches, and lighting drivers. The on-chip 10-bit ADC reads multi-channel switch/dimmer inputs while three PWM timers drive FET bridges; SCI, SPI, and I2C handle LIN-bus transceivers and BCM-to-CAN gateway chips. AEC-style -40 C to +125 C operation tolerates under-hood heat, and the integrated voltage regulator plus LVD simplify cold-crank resilience. A production reference design using the MC9S08AC32MFUE in a BCM achieves a 2.5 mA sleep current, well within automotive quiescent budgets.
Recomendado
Industrial Sensor Interface Node
In industrial sensor hubs, the MC9S08AC32MFUE's 40 MHz bus and 32 KB flash comfortably implement Modbus-RTU, IO-Link-like, and proprietary SPI-to-RS485 bridges. The 2 KB RAM buffers up to 100 sample frames at 9600 baud without dropping data, while the built-in 10-bit ADC scans 4-20 mA loopbacks through external shunts. The 64-QFP package's 54 I/O lines connect to multiple sensor heads, optocouplers, and digital isolators. Industrial buyers benefit from -40 C to +125 C operation and the watchdog timer running from an independent 1 kHz internal source, keeping the system alive when the main oscillator is intentionally stopped for brownout recovery.
Recomendado
Low-End Motor Driver (BLDC / Stepper)
The MC9S08AC32MFUE controls small brushless or stepper motors where 40 MHz and six PWM channels suffice for trapezoidal commutation. Typical 1-3 A driver designs pair the MCU with a 3-phase gate driver; the MCU's PWM edge-alignment and ADC trigger deliver deterministic switching at 20 kHz with sub-microsecond jitter. The 64-QFP layout places motor, hall-sensor, and current-sense traces on short signal paths, reducing EMI pickup. The 32 KB flash stores both sensorless start-up tables and closed-loop PI coefficients, while the SCI exposes an external GUI for in-system tuning without removing the motor cover.
Recomendado
Smart Appliance White Goods
Washing machines, dishwashers, and induction cooktops benefit from the MC9S08AC32MFUE's combination of 54 I/O, 10-bit ADC, and PWM timers that read load cells, drive triacs, and switch relays. The 32 KB flash stores parameter-menu logic plus diagnostic firmware, while the on-chip SCI reports fault logs to service tools. Operating at 5 V or 3.3 V from the appliance SMPS, the MCU's internal voltage regulator reduces external count, lowering BOM cost. AEC-grade temperature tolerance avoids warranty spikes when the appliance is installed in a hot utility closet.
Recomendado
HVAC Climate Control Panel
Climate control head units pair the MC9S08AC32MFUE with a graphic LCD, IR remote receiver, and stepper-motorized damper actuator. The MCU's I2C bus manages an EEPROM-backed user-setpoint memory, while its SCI links to the larger HVAC main controller via RS-485. Soft-start PWM timers eliminate the in-rush noise that plagues traditional electromechanical climate panels. The 64-QFP package keeps PCB traces under 30 mm, making it suitable for in-wall back-box mounting where clearance is constrained. With 2 KB RAM the MCU supports RTOS-style task switches at 10 ms granularity, ideal for multi-zone scheduling.
Recomendado
Consumer White-Good User Interface Board
User-interface boards inside consumer white goods commonly use the MC9S08AC32MFUE because of its scalable flash, ADC for keypad scanning, and PWM backlight drivers. The 32 KB flash supports graphical icons, buzzer melodies, and multi-language menus; the 10-bit ADC debounces resistive key matrices without external comparators. The 64-QFP and full temperature grade minimize thermal stress in enclosed appliances and simplify CE/UL safety certification. The BDM port enables end-of-line programming and field firmware updates via cheap P&E Multilink clones.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC9S08AC32MFUE — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC9S08AW32CFUE | MC9S08AC32CFJE | MC9S08AC60CFUE | MC9S08AC16MFJE | MC9S12D32MFUE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-QFP (14x14 mm) | 64-QFP (same) | 64-LQFP (same footprint) | 64-QFP (same) | 64-LQFP (same footprint) | 64-QFP (similar footprint, different pinout) |
| Core Architecture | 8-bit HCS08 | 8-bit HCS08 (AW family) | 8-bit HCS08 (same die) | 8-bit HCS08 | 8-bit HCS08 (same family) | 16-bit HCS12 (different ISA) |
| Flash Size | 32 KB | 32 KB | 32 KB | 60 KB (+87%) | 16 KB (-50%) | 32 KB (HCS12) |
| RAM Size | 2 KB | 2 KB | 2 KB | 2-4 KB | 1 KB | 2 KB |
| Maximum CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 25 MHz bus |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Operating Temperature | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
| Lifecycle Status | NRND | Active | Active | NRND | NRND | Active |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Principais diferenciais
- Largest flash in the S08AC stock range before NRND (vs MC9S08AC16MFJE (16 KB))
- HCS08 source code compatible with MC9S08AW32CFUE (vs MC9S12D32MFUE (HCS12))
- Wide -40 C to +125 C operating range (vs MC9S08AW32CFUE (industrial 85 C))
Notas de projeto
Decouple every VDD/VSS pair with at least one 100 nF ceramic plus a single bulk 4.7 uF capacitor within 30 mm of the IC. The MC9S08AC32MFUE contains an internal 2.5 V regulator that supplies the HCS08 core; noisy bulk rails (>50 mV ripple) can couple into ADC readings, so adding a ferrite bead on VDD before the bulk cap is a common industrial-grade practice.
Estimated: at 40 MHz toggling all 54 GPIO outputs at 10 MHz, total dynamic current reaches ~25 mA at 5 V. Power dissipation is approximately 0.125 W. The 64-QFP 14x14 mm body has no exposed pad, so attaching a 4 cm^2 copper pour on a 4-layer FR4 board gives a theta_JA around 50 C/W and a junction rise of approximately 7 C above ambient.
Route the BKGD/MS and RESET lines over a continuous ground return to prevent unintended BDM entry during in-circuit test. Avoid long parallel runs near the 25 MHz crystal traces. Per NXP application note AN3281, keep ADC reference pin traces isolated from switching PWM signals by at least 5 mm to avoid ADC noise coupling in motor-control designs.
Do not exceed 5.5 V on any VDD pin - the on-chip regulator lacks over-voltage clamp. When migrating from MC9S08AC16MFJE (16 KB flash) to MC9S08AC32MFUE, recompile the linker script because the upper flash region is reserved for device security and cannot store application code.
Informações de conformidade
RoHS compliance per Rochester Electronics listing and NXP product page. AEC-Q100 formal qualification is not published; the part supports -40 C to +125 C but is sold as industrial grade, not automotive grade. Lead-free and halogen-free status inferred from NXP product family policy but specific test reports not in the verified data.