MC908GR16MFAE - HC08 8-Bit MCU 16KB Flash 48-LQFP | NXP
Référence : MC908GR16MFAE ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.32 | $6,32 |
| 10 | $5.69 | $56,90 |
| 100 | $5.06 | $506,00 |
| 500 | $4.55 | $2 275,00 |
| 1 000 | $4.1 | $4 100,00 |
MC908GR16MFAE Présentation
A microcontroller is a single-chip computer that integrates a CPU, non-volatile program memory (Flash/ROM), volatile data memory (RAM), and peripheral I/O on one die. The M68HC08 architecture is an 8-bit successor to the M68HC05, featuring an enhanced instruction set with a 16-bit index register, additional addressing modes, and a Flash-friendly memory map, making it widely adopted in automotive body, industrial control, and consumer appliances.
Key features of the MC908GR16MFAE include 16 KB of on-chip Flash with in-system programmability, 1 KB of RAM, 37 general-purpose I/O pins, an 8 MHz internal oscillator (with software-selectable trimming via ICS module on later GR revisions), a multi-channel 10-bit ADC, two SCI (UART) channels, one SPI, timers including a 16-bit TIM module, and an integrated LVI (low-voltage inhibit) brown-out module. An internal oscillator eliminates external crystal cost for cost-sensitive designs.
Architecturally, the HC08 core uses a von Neumann bus with separate program/data memory spaces and a hardware index register stack, providing deterministic interrupt latency. The 48-LQFP package exposes the full peripheral set including the KBI (keyboard interrupt) module, COP watchdog, and flash security. Compared with newer Cortex-M0 parts, the HC08 consumes similar active current at low clock speeds but requires explicit bank-switching for RAM > 256 bytes.
Typical applications include appliance controls, automotive body modules, simple sensor hubs, low-end HMI panels, security keypads, motor drive (BLDC brushed) controllers at low PWM rates, and remote sensor transmitters. The wide operating voltage (typically 2.7V to 5.5V) and -40C to +125C automotive grade make it suitable for underhood modules and industrial instrumentation.
When designing with this MCU, ensure the ICS module is configured for the application clock rate; the internal oscillator adds BOM savings but exhibits higher jitter than a crystal. Also verify Flash programming timing margin at cold temperatures to avoid write/erase failures below -20C.
This page synthesizes distributor pricing, HC08 family drop-in alternatives, and practical design notes for engineers maintaining or migrating legacy 8-bit MCU designs.
Alternatives de remplacement direct pour MC908GR16MFAE — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC908GR16MFAE (même facteur de forme et même empreinte) — différant par Package, Program Memory Size, RAM Size, ADC, Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC908GZ16MFAE
✅ Remplacement direct✓ En stock
$7.9001 / unité
Voir la fiche technique →MC908GR16CFNE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC908GR32AMFJ
✅ Remplacement direct✓ En stock
Contactez-nous pour le prix
Voir la fiche technique →MC68HC908JL8MFAE
✅ Remplacement direct✓ En stock
$5.4 / unité
Voir la fiche technique →MC908AP32CFAER
✅ Remplacement direct✓ En stock
$7.4 / unité
Voir la fiche technique →MC908GR16MFAE Valeurs maximales et caractéristiques électriques
| Manufacturer | NXP Semiconductors (formerly Freescale Semiconductor) |
| Series | HC08 GR Family |
| Core Processor | M68HC08 (8-bit) |
| Program Memory Size | 16 KB (16K x 8) Flash |
| RAM Size | 1 KB |
| Fréquence d'horloge maximale | 8 MHz |
| Number of I/O | 37 |
| Boîtier / Format | 48-LQFP (7x7 mm) |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +125C (Automotive) |
| Internal Oscillator | Yes (ICS module) |
| Serial Interfaces | 2x SCI (UART), 1x SPI |
| Watchdog | COP (Computer Operating Properly) |
| Brown-out Reset | LVI (Low Voltage Inhibit) |
| Packaging | Tray |
Configuration des broches de MC908GR16MFAE
| Broche 1 | IRQ — External interrupt request |
| Broche 2 | RST — Reset (active low) |
| Broche 3 | VDD — Power supply |
| Broche 4 | VSS — Ground |
| Broche 5 | OSC1 — Crystal oscillator input |
| Broche 6 | OSC2 — Crystal oscillator output |
| Broche 7 | — Timer clock input |
| Broche 8 | PTA0 — Port A bit 0 (KBI) |
| Broche 9 | PTA1 — Port A bit 1 (KBI) |
| Broche 10 | PTA2 — Port A bit 2 (KBI) |
| Broche 11 | PTA3 — Port A bit 3 (KBI) |
| Broche 12 | PTA4 — Port A bit 4 (KBI) |
| Broche 13 | PTA5 — Port A bit 5 (KBI) |
| Broche 14 | PTA6 — Port A bit 6 (KBI) |
| Broche 15 | PTA7 — Port A bit 7 (KBI) |
| Broche 16 | PTB0 — Port B bit 0 |
| Broche 17 | PTB1 — Port B bit 1 |
| Broche 18 | PTB2 — Port B bit 2 |
| Broche 19 | PTB3 — Port B bit 3 |
| Broche 20 | PTB4 — Port B bit 4 |
| Broche 21 | PTB5 — Port B bit 5 |
| Broche 22 | PTB6 — Port B bit 6 |
| Broche 23 | PTB7 — Port B bit 7 |
| Broche 24 | PTC0 — Port C bit 0 / ADC0 |
| Broche 25 | PTC1 — Port C bit 1 / ADC1 |
| Broche 26 | PTC2 — Port C bit 2 / ADC2 |
| Broche 27 | PTC3 — Port C bit 3 / ADC3 |
| Broche 28 | PTC4 — Port C bit 4 / ADC4 |
| Broche 29 | PTC5 — Port C bit 5 / ADC5 |
| Broche 30 | PTC6 — Port C bit 6 / ADC6 |
| Broche 31 | PTC7 — Port C bit 7 / ADC7 |
| Broche 32 | PTD0 — Port D bit 0 / SCD0 / SPI MISO |
| Broche 33 | PTD1 — Port D bit 1 / SCD0 / SPI MOSI |
| Broche 34 | PTD2 — Port D bit 2 / SCD0 / SPI SPSCK |
| Broche 35 | PTD3 — Port D bit 3 / SCD0 / SPI SS |
| Broche 36 | PTD4 — Port D bit 4 / TXD1 |
| Broche 37 | PTD5 — Port D bit 5 / RXD1 |
| Broche 38 | PTD6 — Port D bit 6 / TXD2 |
| Broche 39 | PTD7 — Port D bit 7 / RXD2 |
| Broche 40 | PTE0 — Port E bit 0 |
| Broche 41 | PTE1 — Port E bit 1 |
| Broche 42 | PTE2 — Port E bit 2 |
| Broche 43 | PTE3 — Port E bit 3 |
| Broche 44 | PTE4 — Port E bit 4 |
| Broche 45 | PTE5 — Port E bit 5 |
| Broche 46 | PTE6 — Port E bit 6 |
| Broche 47 | PTE7 — Port E bit 7 |
| Broche 48 | NC — Not connected (per datasheet) |
Applications typiques
MC908GR16MFAE convient pour 7 applications: Automotive Body Control Modules, Industrial Sensor Hubs, Appliance Control (Washing/Refrigeration), Low-Cost Remote Sensor Transmitters, Security Keypads and Access Panels, Small Motor Drive (Brushed DC), Replacement for Aging HC05 Designs.
Automotive Body Control Modules
The MC908GR16MFAE's HC08 core and automotive -40C to +125C qualification make it well-suited to body control modules handling seat adjustment, exterior lighting, and central locking. Its 16 KB Flash is sufficient for typical BCU firmware (<10 KB C source), and the internal 8 MHz ICS oscillator eliminates the external crystal reducing BOM and PCB area. Placed as the main BCM controller interfacing multiple LIN slaves via SCI channels; the 37 GPIOs are split between relay drives and switch inputs with KBI interrupt on wake-up.
Recommandé
Industrial Sensor Hubs
Low-speed industrial sensor aggregation modules benefit from the MC908GR16MFAE's ADC and SPI combination for multi-channel sensor readout. The 1 KB RAM holds small protocol stacks, and the SPI master drives external ADC/DAC peripherals for analog signal chains. Operating at 8 MHz with internal ICS, the MCU draws minimal quiescent current (~3 mA active), making it suitable for 4-20 mA loop-powered sensor transmitters where total system current is budgeted below 4 mA.
Recommandé
Appliance Control (Washing/Refrigeration)
White goods controller boards typically use the MC908GR16MFAE class MCU for main control logic over motors, valves, displays, and button panels. The 37 GPIOs directly drive LED status indicators, triac drivers via opto-isolators, and buzzer outputs without external I/O expanders. Real-time task scheduling is handled by the 16-bit TIM module for motor PWM, while the SCI interfaces to inverter boards. The -40C to +125C qualification handles refrigerator enclosure thermal exposure.
Recommandé
Low-Cost Remote Sensor Transmitters
Battery-powered wireless sensor remotes (for garage door openers, remote controls, simple telemetry) leverage the MC908GR16MFAE's low active current and wide operating voltage for long battery life. The HC08 STOP/WAIT instruction set allows deep sleep with periodic wake on KBI interrupt. The integrated SPI master drives external RF front-ends, and the internal ICS eliminates the crystal, achieving sub-$0.20 incremental BOM cost typical of consumer wireless nodes.
Recommandé
Security Keypads and Access Panels
Security keypads and access control panels deploy the MC908GR16MFAE for matrix-scanned key handling, buzzer control, and serial output to a master controller. The KBI (keyboard interrupt) module supports 8 GPIO-based interrupts for rapid key debounce without firmware polling, freeing CPU bandwidth. The Flash security byte prevents unauthorized code readout for tamper resistance.
Recommandé
Small Motor Drive (Brushed DC)
Brushed DC motor drivers in low-power applications (small fans, pumps, window lifts) pair the MC908GR16MFAE with FET gate drivers for entry-level variable-speed control. The 16-bit TIM module generates center-aligned PWM at 8-bit effective resolution, suitable for basic RPM regulation without DSP overhead. The MCU's small footprint (48-LQFP 7x7 mm) keeps PCB area compact for integration into motor-control daughter boards.
Recommandé
Replacement for Aging HC05 Designs
Engineers maintaining older M68HC05-based products use the MC908GR16MFAE as an in-place upgrade because of the source-code compatibility of HC05 with HC08 instruction set (extended addressing only). Migration typically requires minimal code changes (mainly the new index register modes). The 48-LQFP footprint is widely supported across existing HC05/HC08 board layouts. The automotive temperature grade reuses the same thermal design as HC05 predecessors, simplifying qualification re-work.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC908GR16MFAE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC908GZ16MFAE | MC908GR16CFNE | MC908GR32AMFJ | MC68HC908JL8MFAE | MC908AP32CFAER |
|---|---|---|---|---|---|---|
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same | NXP Semiconductors - same |
| Program Memory (Flash) | 16 KB | 16 KB | 16 KB | 32 KB (+100%) | 8 KB (-50%) | 32 KB (+100%) |
| RAM Size | 1 KB | 2 KB (+100%) | 1 KB | 2 KB (+100%) | 256 B (-75%) | 2 KB (+100%) |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Operating Temperature | -40C to +125C (Automotive) | -40C to +125C (Automotive) | 0 to +70C (Commercial) | -40C to +125C (Automotive) | -40C to +125C (Automotive) | -40C to +125C (Automotive) |
| CAN Interface | No | Yes (1x CAN 2.0A/B) | No | No | No | No |
| Core Series | M68HC08 | M68HC08 | M68HC08 | M68HC08 | M68HC08 | M68HC08 (AP32 series) |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
Principaux différenciateurs
- Wide automotive temperature grade with 16 KB Flash and 37 GPIOs in compact 48-LQFP (vs MC68HC908QT4VPE)
- CAN bus capability available in pin-compatible 48-LQFP variant (vs MC908GZ16MFAE)
- Drop-in density migration within the GR series (vs MC908GR32AMFJ)
- Lower-density match for cost-sensitive designs (vs MC68HC908JL8MFAE)
Notes de conception
Decouple the MC908GR16MFAE VDD pin with a 0.1 uF ceramic capacitor placed within 3 mm of the package and a single 10 uF bulk capacitor on the VDD rail. The HC08 core's short interrupt latency makes decoupling critical during peripheral activity bursts (SCI transmission, ADC sampling). When using the internal ICS oscillator, anticipate ~2 mA peak current transients, requiring the bulk capacitor to maintain <100 mV ripple under load.
Keep traces to OSC1/OSC2 short (under 10 mm total) and guard with ground pour when using external crystal; route the ICS-modulated clock away from analog ADC inputs to avoid coupling. With only 11 dedicated (non-GPIO) pins, ball-grid-style congestion is avoided, but a 2-layer PCB is acceptable if a continuous ground plane exists under the MCU. Place decoupling on the VDD/VSS pair before routing traces elsewhere on the board.
Do not assume bank-switched RAM is automatically mapped: on the MC908GR16MFAE, the upper 768 bytes of the 1 KB RAM require manual page-window setup via the INDEX register when accessing non-zero pages. Designers migrating from HC05 (256-byte flat RAM) often forget this, leading to read/write errors on large data buffers. Use the HC08 'extended addressing' instructions (with page prefix byte) and update assemblers accordingly. Also note the COP watchdog must be explicitly serviced in firmware or it triggers a reset after the configured timeout.
The MC908GR16MFAE's ADC sample-and-hold requires the source impedance to be below 10 kohm for full 10-bit accuracy. Add external op-amp buffers when reading high-impedance sensors (e.g., thermistor dividers >50 kohm). The internal ADC reference (VDD) is noisy under heavy digital switching; using an external voltage reference via the VREF pin improves ADC stability in precision measurement applications.
Estimated: at the maximum operating frequency (8 MHz) with all peripherals active, the MC908GR16MFAE dissipates well below 100 mW. Junction temperature rise using the 48-LQFP theta_JA of approximately 65 C/W (estimated, 2-layer PCB without dedicated thermal pad) yields negligible self-heating even at +125C ambient. No external heatsink is required.
Informations de conformité
AEC-Q100 qualification inferred from -40C to +125C automotive temperature grade and 'MFAE' ordering code suffix. RoHS, REACH, lead-free and halogen-free statuses were not present in the Verified Web Data and require confirmation from NXP's product compliance documentation (declared as [DATA_NEEDED] in specs).