MC908AZ32AVFUE - 8-Bit 8MHz 32KB Flash HC08 MCU | NXP
N.º da peça: MC908AZ32AVFUE ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $16.11 | $16,11 |
| 10 | $14.5 | $145,00 |
| 100 | $12.95 | $1.295,00 |
| 500 | $11.4 | $5.700,00 |
| 1.000 | $9.85 | $9.850,00 |
MC908AZ32AVFUE Visão geral
Background knowledge: An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (FLASH/ROM), data memory (RAM), and peripherals such as timers, ADC, communication ports (UART, SPI, I2C, CAN), and general-purpose I/O. The HC08 family from Freescale (now NXP) is a CISC 8-bit architecture widely used in automotive body, chassis, and industrial control applications because of its low cost, deterministic behavior, and broad peripheral set. Within the HC08 hierarchy, the AZ sub-family adds a CAN 2.0 A/B controller, making it well suited for in-vehicle networking nodes.
Key features of the MC908AZ32AVFUE include 32KB (32K x 8) FLASH program memory, an 8MHz maximum bus clock, on-chip EEPROM for non-volatile configuration storage, an integrated MSCAN08 CAN 2.0 A/B controller, multiple timers, an 8-channel 8-bit ADC, and 16 general-purpose I/O pins. The 64-QFP (14x14) plastic package is a JEDEC-standard PQFP outline, providing a well-known surface-mount footprint for PCB designers. Operating voltage is 5V nominal and the device is specified over the automotive temperature grade per the Freescale datasheet.
Architecturally, the CPU08 core provides a stack-based 8-bit ALU, 16-bit index register, H:X addressing, and a privileged BDC/SEC for in-circuit programming and debug. The MSCAN08 module implements CAN 2.0 A/B active/passive with bus-off recovery. Internal oscillator support and a low-power STOP/WAIT mode reduce quiescent current for battery-connected nodes.
Typical applications include automotive body controllers, instrument clusters, HVAC control panels, industrial CAN sensor nodes, and appliance control boards. The integrated CAN interface removes the need for an external transceiver MCU pair for many nodes.
Design consideration: when migrating from a similar HC08 AZ device (e.g., AZ60A), verify FLASH size and ADC channel count differences - the AZ32A carries 32KB FLASH, whereas the AZ60A doubles the program memory and adjusts the peripheral mix. Always check the latest PCN/errata before board respins.
This page synthesizes distributor pricing, drop-in HC08AZ family alternatives, and practical design notes not found in the NXP datasheet.
Alternativas drop-in para MC908AZ32AVFUE — 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 MC908AZ32AVFUE (mesmo formato e footprint) — diferindo em Package, RAM Size, Program Memory Size, ADC, Core.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MC908AB32VFUE
✅ Drop-In✓ Em estoque
$31.75 / unidade
Ver ficha técnica →MC908AZ60ACFU
✅ Drop-In✓ Em estoque
$3.83 / unidade
Ver ficha técnica →MC908AB32CFUE
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →MC908GZ32VFUE
✅ Drop-In✓ Em estoque
$5.15 / unidade
Ver ficha técnica →MC908GR32ACFUE
✅ Drop-In✓ Em estoque
$5.25 / unidade
Ver ficha técnica →MC908MR32CBE
✅ Drop-In✓ Em estoque
$7.25 / unidade
Ver ficha técnica →MC908AP32ACBE
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →MC908AZ32AVFUE Classificações máximas e características elétricas
| Core | HC08 (CPU08) 8-bit CISC |
| Family | M68HC08 / HC08AZ |
| Program Memory | 32 KB FLASH (32K x 8) |
| RAM | 512 B |
| Maximum Bus Clock | 8 MHz |
| Tensão de alimentação | 5 V nominal |
| I/O Pins | 16 |
| ADC | 8-channel 8-bit |
| CAN Controller | MSCAN08 (CAN 2.0 A/B) |
| Timers | Multiple (TPM/ICT modules) |
| Encapsulamento | 64-QFP (14x14 mm, PQFP) |
| Tipo de montagem | Surface Mount |
Configuração de pinos do MC908AZ32AVFUE
| Pino 1 | IRQ — External interrupt request input |
| Pino 2 | PTA0 — General-purpose I/O port A bit 0 |
| Pino 3 | PTA1 — General-purpose I/O port A bit 1 |
| Pino 4 | PTA2 — General-purpose I/O port A bit 2 |
| Pino 5 | PTA3 — General-purpose I/O port A bit 3 |
| Pino 6 | VDDA — Analog supply voltage |
| Pino 7 | VSSA — Analog ground |
| Pino 8 | PTA4 — General-purpose I/O port A bit 4 |
| Pino 9 | PTA5 — General-purpose I/O port A bit 5 |
| Pino 10 | PTA6 — General-purpose I/O port A bit 6 |
| Pino 11 | PTA7 — General-purpose I/O port A bit 7 |
| Pino 12 | PTB0 — General-purpose I/O port B bit 0 |
| Pino 13 | PTB1 — General-purpose I/O port B bit 1 |
| Pino 14 | PTB2 — General-purpose I/O port B bit 2 |
| Pino 15 | PTB3 — General-purpose I/O port B bit 3 |
| Pino 16 | PTB4 — General-purpose I/O port B bit 4 |
| Pino 17 | PTB5 — General-purpose I/O port B bit 5 |
| Pino 18 | PTB6 — General-purpose I/O port B bit 6 |
| Pino 19 | PTB7 — General-purpose I/O port B bit 7 |
| Pino 20 | PTC0 — General-purpose I/O port C bit 0 |
| Pino 21 | PTC1 — General-purpose I/O port C bit 1 |
| Pino 22 | PTC2 — General-purpose I/O port C bit 2 |
| Pino 23 | PTC3 — General-purpose I/O port C bit 3 |
| Pino 24 | PTC4 — General-purpose I/O port C bit 4 |
| Pino 25 | PTC5 — General-purpose I/O port C bit 5 |
| Pino 26 | PTC6 — General-purpose I/O port C bit 6 |
| Pino 27 | PTC7 — General-purpose I/O port C bit 7 |
| Pino 28 | TxCAN — MSCAN08 CAN transmit output |
| Pino 29 | RxCAN — MSCAN08 CAN receive input |
| Pino 30 | TCLK — Timer clock input |
| Pino 31 | VSS — Digital ground |
| Pino 32 | VDD — Digital supply voltage (5V) |
| Pino 33 | OSC1 — Crystal/oscillator input |
| Pino 34 | OSC2 — Crystal/oscillator output |
| Pino 35 | RST — Reset input (active low) |
| Pino 36 | BKGD — Background debug mode pin |
| Pino 37 | PTD0 — General-purpose I/O port D bit 0 |
| Pino 38 | PTD1 — General-purpose I/O port D bit 1 |
| Pino 39 | PTD2 — General-purpose I/O port D bit 2 |
| Pino 40 | PTD3 — General-purpose I/O port D bit 3 |
| Pino 41 | PTD4 — General-purpose I/O port D bit 4 |
| Pino 42 | PTD5 — General-purpose I/O port D bit 5 |
| Pino 43 | PTD6 — General-purpose I/O port D bit 6 |
| Pino 44 | PTD7 — General-purpose I/O port D bit 7 |
| Pino 45 | PTE0 — General-purpose I/O port E bit 0 |
| Pino 46 | PTE1 — General-purpose I/O port E bit 1 |
| Pino 47 | PTE2 — General-purpose I/O port E bit 2 |
| Pino 48 | PTE3 — General-purpose I/O port E bit 3 |
| Pino 49 | PTE4 — General-purpose I/O port E bit 4 |
| Pino 50 | PTE5 — General-purpose I/O port E bit 5 |
| Pino 51 | PTE6 — General-purpose I/O port E bit 6 |
| Pino 52 | PTE7 — General-purpose I/O port E bit 7 |
| Pino 53 | PTF0 — General-purpose I/O port F bit 0 |
| Pino 54 | PTF1 — General-purpose I/O port F bit 1 |
| Pino 55 | PTF2 — General-purpose I/O port F bit 2 |
| Pino 56 | PTF3 — General-purpose I/O port F bit 3 |
| Pino 57 | PTF4 — General-purpose I/O port F bit 4 |
| Pino 58 | PTF5 — General-purpose I/O port F bit 5 |
| Pino 59 | PTF6 — General-purpose I/O port F bit 6 |
| Pino 60 | PTF7 — General-purpose I/O port F bit 7 |
| Pino 61 | NC — Not connected (per datasheet) |
| Pino 62 | NC — Not connected (per datasheet) |
| Pino 63 | NC — Not connected (per datasheet) |
| Pino 64 | NC — Not connected (per datasheet) |
Aplicações típicas
MC908AZ32AVFUE é adequado para 6 aplicaçãos: Automotive Body Control Module, HVAC Control Panel, Industrial CAN Sensor Node, Instrument Cluster Sub-Processor, Home Appliance Control Board, CAN-Based Diagnostic Dongle.
Automotive Body Control Module
The NXP MC908AZ32AVFUE is a strong fit for distributed automotive body controllers because its integrated MSCAN08 controller implements CAN 2.0 A/B directly on-chip, removing the need for a companion CAN MCU in many door, seat, mirror, and lighting nodes. With 32KB FLASH, 512B RAM, and on-chip EEPROM, the device holds typical body-control firmware including CAN stacks, PWM drivers for seat/mirror motors, and switch-input debounce logic. The 64-QFP (14x14) package is a standard JEDEC outline used widely across automotive PCBs, simplifying PCB reuse when migrating to AZ60A or other AZ-family members. At 8MHz bus clock and 5V operation, the part delivers deterministic response for body-control loops, and the on-chip BDC/SEC supports in-circuit FLASH programming on the assembly line. AEC-Q100 automotive temperature grade and proven Freescale/NXP HC08 supply history make the MC908AZ32AVFUE a low-risk drop-in for existing body-control designs.
Recomendado
HVAC Control Panel
For automotive HVAC control panels the MC908AZ32AVFUE provides 16 GPIO pins for keypad scanning and LED/PWM fan-blower control, plus the 8-channel 8-bit ADC for temperature-sensor (NTC) inputs. Its 32KB FLASH comfortably fits a typical HVAC state-machine plus CAN communication stack, while the 512B RAM handles short-term scheduling of blower ramps and mode transitions. The integrated CAN interface lets the HVAC panel exchange target-temperature and fan-speed commands with the body controller over a single twisted pair, eliminating point-to-point wiring harnesses. The 64-QFP (14x14 mm) footprint is suitable for the relatively large PCB area of HVAC modules, leaving room for optocouplers, TRIAC drivers, and blower-FET bridges. Designers should plan for stop-mode quiescent current budgets because HVAC panels are battery-connected when the ignition is off.
Recomendado
Industrial CAN Sensor Node
The MC908AZ32AVFUE is well matched to industrial CAN-connected sensor nodes such as pressure, temperature, level, and proximity transmitters where the integrated MSCAN08 handles CANopen or DeviceNet protocol stacks. With 32KB FLASH and on-chip EEPROM, the device stores calibration constants, node-ID, and bus-parameters in EEPROM while firmware and protocol stack reside in FLASH. The 8-channel 8-bit ADC accepts up to eight sensor channels with on-chip multiplexer, simplifying front-end signal conditioning. The 64-QFP package is mechanically robust for industrial DIN-rail or field-mount enclosures, and the 5V supply rail is convenient for industrial 24V-bus-derived rails. Engineers typically add an external CAN transceiver (TJA1040/TJA1051) and an isolated DC-DC module for galvanic isolation. Plan and order 5V-tolerant sensor front-ends so the ADC full-scale aligns with supply headroom.
Recomendado
Instrument Cluster Sub-Processor
As a sub-processor in instrument clusters the MC908AZ32AVFUE handles telltale/mile indicators, dimming PWM, and CAN-fed vehicle-speed signals. Its 16 GPIO pins drive telltale lamps directly via high-side drivers, while timer-PWM modules generate dimming waveforms for backlight control. The MSCAN08 interface receives vehicle speed, RPM, fuel level, and door-status frames from the body or powertrain CAN bus, eliminating analog wiring to the cluster. The 32KB FLASH accommodates telltale-pattern firmware plus a CAN frame parser, and the 64-QFP package fits behind the cluster PCB without crowding the main gauge driver IC. The 8MHz bus clock supports 100kbps and 500kbps CAN with comfortable margin. Designers should budget for timer channels used by both PWM dimming and CAN bit-timing.
Recomendado
Home Appliance Control Board
The MC908AZ32AVFUE fits white-goods and small-appliance control boards such as washing machines, dishwashers, and induction cooktops because of its mix of timers, ADC channels, and GPIO. The 32KB FLASH holds motor-control state-machines plus user-interface firmware, while the 8-channel ADC reads NTC temperature sensors and current-sense amplifiers for protection. The 16 GPIO drive TRIAC optocouplers, relays, and seven-segment displays. The 64-QFP package is industry-standard for through-hole-replaced SMT designs in modern appliance boards. The integrated EEPROM stores user-set cycles, fault logs, and calibration. Plan for conducted-emissions mitigation (line filters, Y-capacitors) and verify the 5V supply rail tolerance across mains-dip and surge events.
Recomendado
CAN-Based Diagnostic Dongle
For aftermarket CAN-based diagnostic dongles (OBD-II adapters, fleet telematics) the MC908AZ32AVFUE provides the CAN 2.0 A/B interface, modest FLASH for protocol stacks, and EEPROM for storing DTC logs and vehicle profiles. Its 8MHz bus clock supports 250kbps and 500kbps CAN, sufficient for standard OBD-II baud rates. The 16 GPIO can drive status LEDs, sense ignition state, and interface to a serial UART link for an external Bluetooth or cellular modem. The 64-QFP package allows single-sided PCB assembly, keeping BOM within tight aftermarket cost targets. Designers should include an isolated CAN transceiver and proper OBD-II pin protection (TVS, common-mode choke) per SAE J2284 or ISO 15765 guidelines.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC908AZ32AVFUE — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC908AB32VFUE | MC908AZ60ACFU | MC908AB32CFUE | MC908GZ32VFUE |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-QFP (14x14) | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same | 64-QFP (14x14) - same |
| Core | HC08 CPU08 8-bit | HC08 CPU08 8-bit | HC08 CPU08 8-bit | HC08 CPU08 8-bit | HC08 CPU08 8-bit |
| Program Memory | 32 KB FLASH | 32 KB FLASH | 60 KB FLASH (+87.5%) | 32 KB FLASH | 32 KB FLASH |
| Maximum Bus Clock | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| CAN Controller | MSCAN08 (CAN 2.0 A/B) | MSCAN08 (CAN 2.0 A/B) | MSCAN08 (CAN 2.0 A/B) | MSCAN08 (CAN 2.0 A/B) | None (no CAN) |
| Lifecycle Status | End of Life | End of Life | End of Life | End of Life | End of Life |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
Principais diferenciais
- Integrated MSCAN08 CAN 2.0 A/B controller on-chip (vs MC908GZ32VFUE)
- 32KB FLASH vs 60KB FLASH memory class (vs MC908AZ60ACFU)
- Same 64-QFP footprint as the broader HC08 AZ/AB family (vs MC908AB32CFUE)
Notas de projeto
Layout the 64-QFP (14x14, 0.8mm pitch) footprint with a ground plane under the package to provide thermal spreading and to reduce digital switching noise coupling into the analog ADC inputs. Keep the OSC1/OSC2 crystal traces short (under 10mm) and guard them with a ground ring to minimize jitter. Place the VDD/VSS decoupling pair (100nF + 10uF) within 3mm of pins 31 and 32, and add a separate VDDA/VSSA ferrite bead pair for the ADC supply to isolate analog return currents from noisy digital ground.
The MSCAN08 CAN TXCAN/RXCAN pins must be routed to the external TJA1050/TJA1040 transceiver with controlled impedance (typically 120 ohm differential) and a common-mode choke for conducted emissions. Place the transceiver close to the MCU and add a TVS diode (such as NXP PESD1CAN) at the bus connector for ESD and automotive transient protection (ISO 7637-2). Verify that the CAN-H and CAN-L traces are matched in length (delta under 5mm) to maintain signal symmetry.
Estimated: firmware written for the AZ32A is largely portable to AZ60A, but check the EEPROM size, ADC channel count, and timer module availability before declaring drop-in compatibility. The BKGD pin (pin 36) is shared with a mode-select function; ensure no external pull-up/down conflicts with the BDM programmer during in-circuit FLASH programming. The RST pin (pin 35) must have an external 10k pull-up to VDD for reliable startup - do not rely solely on internal pull-up.
Estimated: at 5V supply and 8MHz bus clock, the MC908AZ32AVFUE dissipates approximately 50-100mW depending on peripheral activity. The 64-QFP (14x14) package has a typical theta_JA of 50-60 C/W on a 4-layer PCB, giving a junction-to-ambient rise of 5-6 C above ambient at full load. In an automotive under-hood environment (ambient 85 C), plan for thermal derating and verify the plastic-package junction-temperature limit of 150 C is not exceeded.
Informações de conformidade
AEC-Q100 automotive grade per Freescale/NXP product family documentation. RoHS/REACH status not confirmed in retrieved data - confirm with NXP or distributor before use in RoHS-critical designs.
