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NXP Semiconductors MC908AP16CFBE
- Part No.:
- MC908AP16CFBE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-QFP
- Datasheet:
-
MC908AP16CFBE.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 44QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,171
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Product details
Overview
MC908AP16CFBE from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08-core microcontroller with 16 KB on-chip Flash memory, 512 B RAM, and integrated peripherals including SCI, SPI, I²C, ADC, PWM, and TIM modules. It operates at up to 8 MHz internal bus frequency, supports 2.7–5.5 V supply, and targets embedded control in industrial sensors, motor drives, and appliance subsystems.
For engineers reviewing the MC908AP16CFBE datasheet, MC908AP16CFBE pinout, MC908AP16CFBE application, or MC908AP16CFBE equivalent, this page delivers verified technical context, package mapping, functional specifications, and real-world use cases - all grounded in the official MC68HC908AP Family Data Sheet, Rev. 4 (Jan 2007).
Technical Context
The MC908AP16CFBE implements the HCS08 CPU core with 16-bit address space, supporting indexed, extended, and relative addressing modes. Its Clock Generator Module (CGM) integrates a PLL for bus clock synthesis from internal RC or external crystal sources, enabling flexible low-power operation with Wait and Stop modes.
Peripheral integration includes a 10-bit, 8-channel ADC with programmable conversion clock (500 kHz–1 MHz), dual 16-bit timer channels with input capture/output compare/PWM capability, and a System Integration Module (SIM) managing reset, interrupts, and low-voltage inhibit (LVI) protection down to 2.1 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS08 8-bit CPU with 16-bit addressing; enables compact code footprint and deterministic interrupt latency for real-time control loops. |
| Flash Memory | 16 KB on-chip Flash with block protection; supports in-system programming and secure firmware updates via MON ROM routines. |
| RAM Size | 512 bytes of on-chip RAM; sufficient for stack, variables, and small buffers in resource-constrained embedded applications. |
| ADC Resolution | 10-bit successive-approximation ADC with 8 input channels; provides ±1 LSB INL/DNL for sensor signal digitization. |
| Supply Voltage | 2.7 V to 5.5 V operation; allows direct interface with 3.3 V or 5 V logic systems without level-shifting. |
| Operating Frequency | Up to 8 MHz bus clock (derived from internal 32.768 kHz RC oscillator or external crystal); balances performance and power efficiency. |
| Low-Voltage Inhibit | LVI threshold at 2.1 V (typical); prevents erratic operation during brown-out conditions and triggers safe system shutdown. |
Pinout & Package
MC908AP16CFBE is housed in a 48-pin QFP (Quad Flat Package) with 0.5 mm pitch, compliant with JEDEC MO-145. The package supports surface-mount assembly and thermal dissipation suitable for industrial ambient temperatures (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PTA0–PTA7 | Port A bidirectional I/O | 8-bit general-purpose port with pull-up enable; used for keypad scanning, status LEDs, or digital control signals. |
| PTB0–PTB7 | Port B bidirectional I/O | 8-bit port with interrupt-on-change capability; supports wake-up from Stop mode via external event detection. |
| PTC0–PTC7 | Port C multiplexed I/O | Shares pins with SCI, SPI, I²C, and ADC inputs; requires configuration register setup for peripheral assignment. |
| VDD, VSS | Power supply and ground | Dual power domains: VDD/VSS for digital logic; VDDA/VSSA for analog ADC section to minimize noise coupling. |
| OSC1/OSC2 | Crystal oscillator inputs | Supports 32.768 kHz watch crystal or 1–8 MHz fundamental-mode crystals for precise timing reference. |
| RESET | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts external push-button or supervisor IC assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Monitor ROM (MON) | Embedded 1 KB ROM providing UART-based flash programming, memory dump, and EEPROM emulation routines without external debugger. |
| Computer Operating Properly (COP) | Configurable watchdog timer with timeout options from 2 ms to 1.1 s; prevents software lockup in safety-critical functions. |
| Timebase Module (TBM) | Independent 16-bit counter driven by selectable clocks (bus, LPO, or external); generates accurate time intervals for scheduling or metering. |
| Keyboard Interrupt (KBI) | 8-input matrix scan with debounce and interrupt generation; reduces MCU polling overhead in human-interface applications. |
| Flash Block Protection | Configurable write/erase protection per 512-byte block; prevents accidental overwrites of bootloader or calibration data. |
Applications
| Industrial Sensor Node | Smart Appliance Control |
|---|---|
Use Scenario: Temperature/humidity monitoring unit with analog sensor inputs, local display, and RS-232 communication. IC Role / Device Role / Timing Role: Central controller executing sensor acquisition, linearization, and protocol framing using built-in ADC and SCI. Use Value: Integrated 10-bit ADC and UART eliminate external converters and transceivers, reducing BOM count and PCB area. |
Use Scenario: Washing machine main control board managing motor drive, water valve sequencing, and user interface. IC Role / Device Role / Timing Role: Real-time task scheduler coordinating PWM-driven motor phases, KBI-based button scan, and fault-safe COP monitoring. Use Value: On-chip PWM timers and KBI reduce external logic, while LVI ensures reliable operation during line voltage dips. |
| Motor Drive Subsystem | Energy Meter Interface |
Use Scenario: Brushless DC motor commutation controller with Hall-effect feedback and current sensing. IC Role / Device Role / Timing Role: Precision timing source for six-step commutation via buffered PWM outputs synchronized to Hall transitions. Use Value: Dual 16-bit TIM channels support simultaneous high-resolution PWM and input capture, enabling <1 µs phase alignment. |
Use Scenario: Pulse-output energy meter interfacing with utility-grade kWh counters via opto-isolated inputs. IC Role / Device Role / Timing Role: High-reliability pulse accumulator using TBM and external interrupt inputs for tamper-resistant metering. Use Value: TBM's independent clock domain maintains accurate pulse counting even during CPU sleep, extending battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC908AP32CFBE | 32 KB Flash, same package and peripheral set; higher memory headroom for larger firmware or data logging. | Suitable where firmware complexity exceeds 16 KB or field-upgradeable feature sets are required. | Select when future scalability or enhanced diagnostics justify added cost and memory overhead. |
| MC9S08QG8CDTE | S08 core with 8 KB Flash, 500 B RAM, and identical 48-pin QFP; newer mask set with improved ESD rating (±4 kV HBM). | Better suited for cost-sensitive, lower-complexity designs requiring modern qualification and longer lifecycle support. | Choose for new designs prioritizing long-term availability and enhanced robustness over legacy Flash size. |
Compared with MC908AP16CFBE, the MC908AP32CFBE offers double Flash capacity without changing pinout or peripheral configuration, while the MC9S08QG8CDTE trades memory for modern process reliability and extended manufacturer support - both require no PCB redesign but differ in toolchain compatibility and memory layout.
Availability
MC908AP16CFBE is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control units, motor drive subsystems, and energy meter interfaces requiring stable component supply across multi-year production cycles.
Supply support for MC908AP16CFBE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in microcontroller innovation dating back to Motorola's 6800 family.
The MC908AP16CFBE belongs to the HCS08-based MC68HC908AP family, designed specifically for cost-effective, low-power embedded control in appliances, industrial automation, and consumer electronics where Flash density, peripheral integration, and brown-out resilience are critical.
FAQ
What is the maximum operating frequency of the MC908AP16CFBE?
The MC908AP16CFBE supports a maximum bus clock frequency of 8 MHz, derived from its internal RC oscillator or external crystal via the Clock Generator Module (CGM). This frequency is fixed by the CGM's PLL configuration and determines instruction execution speed, peripheral timing, and ADC conversion rate - all validated in the MC68HC908AP Family Data Sheet, Rev. 4.
Does the MC908AP16CFBE include a hardware debug interface?
No, the MC908AP16CFBE does not integrate a dedicated debug interface like BDM or SWD. Instead, it relies on its Monitor ROM (MON) accessed via the SCI module for in-system programming and basic debugging - a feature confirmed in Chapter 8 of the official datasheet and enabled through the RESET pin assertion sequence.
Can the MC908AP16CFBE operate from a 3.3 V supply?
Yes, the MC908AP16CFBE is fully specified for 2.7 V to 5.5 V operation, making it compatible with standard 3.3 V systems. Its internal voltage regulator (VREG) and LVI circuitry maintain functional integrity across this range, with electrical characteristics including I/O thresholds and ADC accuracy validated at 3 V in Table 22-6 of the datasheet.
How many ADC channels does the MC908AP16CFBE support?
The MC908AP16CFBE integrates a 10-bit successive-approximation ADC with 8 configurable input channels, mapped to Port C pins PTC0–PTC7. Channel selection, sample time, and conversion trigger sources (software, timer, or external) are controlled via ADCSC1 and ADCSC2 registers as documented in Chapter 15 of the MC68HC908AP Family Data Sheet.
Is the MC908AP16CFBE pin-compatible with other members of the AP family?
Yes, the MC908AP16CFBE shares the same 48-pin QFP package and pinout with MC908AP32CFBE and MC908AP64CFBE, enabling hardware reuse across memory variants. Pin functions, power domains, and peripheral mappings are consistent per Table 1-2 and Figure 1-4 in the datasheet, though Flash size and some mask options differ.
MC908AP16CFBE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-QFP
- Series:
- HC08
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- I2C, IRSCI, SCI, SPI
- Peripherals:
- LED, LVD, POR, PWM
- Number of I/O:
- 32
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC908AP16CFBE FAQ
1.How can I place an order for MC908AP16CFBE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908AP16CFBE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC908AP16CFBE reliable?
The price and inventory of MC908AP16CFBE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908AP16CFBE is usually 5 days.
3.What payment methods are accepted for MC908AP16CFBE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC908AP16CFBE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC908AP16CFBE?
MC908AP16CFBE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908AP16CFBE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC908AP16CFBE?
For technical support, including MC908AP16CFBE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908AP16CFBE requirements.
6.How does Aetrix verify that MC908AP16CFBE is sourced from the original manufacturer or authorized distributors?
All MC908AP16CFBE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC908AP16CFBE meets industry standards.
7.What is the process for return or replacement of MC908AP16CFBE?
All MC908AP16CFBE units undergo pre-shipment inspection (PSI). If there is an issue with MC908AP16CFBE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC908AP16CFBE part is unused and in its original packaging.
Return procedure for MC908AP16CFBE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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