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NXP Semiconductors MC908AP16ACFBE557
- Part No.:
- MC908AP16ACFBE557
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
MC908AP16ACFBE557.pdf
- Description:
- MICROCONTROLLER, 8 BIT, HC08/S08
- Quantity:
- Payment:
- Shipping:
Inventory:2,599
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Product details
Overview
MC908AP16ACFBE557 from Freescale Semiconductor 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 (8-channel, 10-bit), and a 16-bit TIM module. It operates at up to 8 MHz bus frequency, supports 2.7–5.5 V supply, and targets embedded control in industrial sensors and motor drive interfaces.
For engineers reviewing the MC908AP16ACFBE557 datasheet, MC908AP16ACFBE557 pinout, MC908AP16ACFBE557 application, or MC908AP16ACFBE557 equivalent, this page delivers verified technical context, package mapping, functional pin roles, real-world use cases, and validated alternative options for design-in and sourcing decisions.
Technical Context
The MC908AP16ACFBE557 implements the HCS08 CPU core with enhanced interrupt handling, low-power wait/stop modes, and a configurable Clock Generator Module (CGM) supporting internal RC oscillator or external crystal (1–8 MHz). Its System Integration Module (SIM) manages reset sources including POR, LVI, COP timeout, and illegal opcode detection.
Peripheral integration includes a 10-bit ADC with programmable sample time and conversion trigger sources, dual serial interfaces (SCI and SPI), and a multi-channel 16-bit Timer Interface Module (TIM) supporting input capture, output compare, and PWM generation. All modules are register-mapped into the MCU's unified memory space and accessible via standard HCS08 instruction set.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS08 8-bit CPU with 16 MB linear address space and 24-bit stack pointer |
| Flash Memory | 16 KB on-chip SuperFlash® with block protection and in-system programmability |
| RAM Size | 512 bytes of on-chip RAM with retention in stop mode |
| ADC Resolution | 10-bit successive-approximation ADC with 8 input channels and software-selectable reference |
| Max Bus Frequency | 8 MHz - determines instruction execution speed and peripheral timing margins |
| Supply Voltage | 2.7–5.5 V - enables direct interface with 3.3 V or 5 V logic systems without level shifters |
| I/O Pins | 34 general-purpose I/O pins with configurable pull-up, slew rate, and interrupt capability |
Pinout & Package
MC908AP16ACFBE557 is housed in a 44-pin QFP (Quad Flat Package) with 0.8 mm lead pitch and exposed thermal pad. The package meets JEDEC MS-026 standard and supports reflow soldering per IPC/JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: digital (VDD/VSS) and analog (VDDA/VSSA) for noise isolation in mixed-signal operation |
| OSC1, OSC2 | Crystal oscillator inputs | Supports fundamental-mode quartz crystals from 1–8 MHz; internal load capacitors enabled by CONFIG register |
| PTA0–PTA7 | Port A bidirectional I/O | 8-bit port with individual direction control; PTA0–PTA3 support keyboard interrupt (KBI) and IRQ edge detection |
| PTB0–PTB7 | Port B bidirectional I/O | 8-bit port with alternate functions: SCI TX/RX, SPI MOSI/MISO/SCK, I²C SDA/SCL, and TIM channel inputs/outputs |
| PTC0–PTC7 | Port C bidirectional I/O | 8-bit port with ADC channel inputs (AD0–AD7), TIM channel outputs, and COP reset input capability |
| RESET | Active-low reset input | Asynchronous external reset; internally pulled up; compatible with open-drain reset supervisors |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Memory | Enables 100K+ erase/write cycles and 15-year data retention without external EEPROM |
| Low-Voltage Inhibit (LVI) | Monitors VDD and asserts reset if voltage drops below 2.5 V (±0.1 V), preventing erratic code execution |
| Computer Operating Properly (COP) | Watchdog timer with software-reload window; failure to service within timeout triggers hardware reset |
| Monitor Mode (MON) | ROM-resident debug monitor enabling flash programming and memory inspection via SCI without external debugger |
| Multi-Master I²C Interface | Supports standard-mode (100 kbps) and fast-mode (400 kbps) with arbitration and clock stretching |
Applications
| Industrial Sensor Node | Motor Drive Control |
|---|---|
|
Use Scenario: Standalone temperature/humidity sensor node with RS-485 output and local LED status indication. IC Role / Device Role / Timing Role: Main system controller executing sensor polling, ADC conversion, data formatting, and SCI-to-RS485 translation. Use Value: Integrated SCI + 10-bit ADC + 16 KB Flash eliminates need for external UART or ADC ICs, reducing BOM count and PCB area. |
Use Scenario: Brushless DC motor commutation control using Hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Real-time timing engine generating synchronized 3-phase PWM signals with dead-time insertion and fault monitoring. Use Value: TIM module's buffered output compare and input capture enable precise 120° phase alignment and overcurrent-triggered shutdown within <1 µs latency. |
| Smart Power Meter | Home Appliance UI Controller |
|
Use Scenario: Residential electricity meter with pulse counting, tariff switching, and LCD display driver. IC Role / Device Role / Timing Role: System manager coordinating energy measurement (via external metrology IC), timekeeping (TBM), and user interface updates. Use Value: TBM provides accurate 1-second interrupts independent of bus clock stability; SPI interface connects to isolated metrology IC with CRC error checking. |
Use Scenario: Microwave oven control panel with keypad scanning, buzzer tone generation, and relay sequencing. IC Role / Device Role / Timing Role: Dedicated UI processor handling KBI-based key scan, PWM audio tone synthesis, and safe relay activation/deactivation sequences. Use Value: Keyboard Interrupt Module (KBI) detects key presses with no CPU polling; COP ensures firmware hangs trigger immediate power-cycle-safe reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC908AP32ACFBE557 | 32 KB Flash, same pinout and peripheral set; higher memory headroom for larger firmware | Suitable where bootloader, OTA update partition, or expanded feature set requires >16 KB code space | Select when future firmware growth or field-upgrade capability is required without PCB change |
| MC908AP8ACFBE557 | 8 KB Flash, identical architecture and I/O count; reduced memory footprint and cost | Applicable in cost-sensitive, functionally minimal designs (e.g., single-sensor readout only) | Choose for fixed-function applications with static firmware under 64 KB addressing limit |
Compared with MC908AP16ACFBE557, the AP32 variant offers scalable code storage while maintaining full hardware compatibility, whereas the AP8 variant reduces cost and power in memory-constrained deployments - both share identical peripheral configuration registers and interrupt vectors.
Availability
MC908AP16ACFBE557 is available at Aetrix Electronics and suitable for industrial sensor nodes, motor drive control units, smart power meters, and home appliance UI controllers requiring stable component supply across extended production lifecycles.
Supply support for MC908AP16ACFBE557 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
Freescale Semiconductor (now part of NXP Semiconductors) is a global leader in embedded processing, automotive MCUs, and analog power solutions, with decades of industrial and automotive qualification expertise.
The MC908AP16ACFBE557 belongs to the HCS08-based AP-family, designed specifically for cost-sensitive, low-power industrial control applications requiring robust flash memory, mixed-signal integration, and long-term supply assurance.
FAQ
What is the maximum operating frequency of the MC908AP16ACFBE557?
The MC908AP16ACFBE557 supports a maximum bus frequency of 8 MHz, derived from its internal CGM with PLL or direct oscillator input. This frequency governs instruction execution speed, ADC conversion time, and peripheral timing - all specifications in the datasheet assume operation at this rated speed.
Does the MC908AP16ACFBE557 include a hardware watchdog timer?
Yes, the MC908AP16ACFBE557 integrates a Computer Operating Properly (COP) watchdog timer with programmable timeout (0.5 ms to 1.0 s). The COP must be serviced by firmware before timeout; failure triggers a hardware reset, ensuring recovery from lockup conditions without external components.
Can the MC908AP16ACFBE557 perform in-system programming of its Flash memory?
Yes, the MC908AP16ACFBE557 supports full in-system programming (ISP) of its 16 KB Flash memory via the built-in Monitor Mode (MON) ROM. Using only the SCI interface and a host PC, users can erase, program, and verify Flash without removing the device from the target board.
What analog reference options does the ADC in the MC908AP16ACFBE557 support?
The MC908AP16ACFBE557 ADC supports two selectable references: internal bandgap (1.25 V ±3%) or external VDD (with 2.7–5.5 V range). Reference selection is controlled via the ADCSC1 register, enabling flexible scaling for precision sensor measurements across varying supply conditions.
Is the MC908AP16ACFBE557 pin-compatible with other devices in the AP-family?
Yes, the MC908AP16ACFBE557 shares identical 44-pin QFP packaging and pin mapping with MC908AP8ACFBE557, MC908AP32ACFBE557, and MC908AP64ACFBE557 - allowing drop-in replacement across memory variants without layout changes.
MC908AP16ACFBE557 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- -
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
MC908AP16ACFBE557 FAQ
1.How can I place an order for MC908AP16ACFBE557 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908AP16ACFBE557 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 MC908AP16ACFBE557 reliable?
The price and inventory of MC908AP16ACFBE557 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908AP16ACFBE557 is usually 5 days.
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MC908AP16ACFBE557 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908AP16ACFBE557 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 MC908AP16ACFBE557?
For technical support, including MC908AP16ACFBE557 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908AP16ACFBE557 requirements.
6.How does Aetrix verify that MC908AP16ACFBE557 is sourced from the original manufacturer or authorized distributors?
All MC908AP16ACFBE557 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 MC908AP16ACFBE557 meets industry standards.
7.What is the process for return or replacement of MC908AP16ACFBE557?
All MC908AP16ACFBE557 units undergo pre-shipment inspection (PSI). If there is an issue with MC908AP16ACFBE557, 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 MC908AP16ACFBE557 part is unused and in its original packaging.
Return procedure for MC908AP16ACFBE557:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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