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NXP Semiconductors MC9S08GT8ACFDER
- Part No.:
- MC9S08GT8ACFDER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MC9S08GT8ACFDER.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
MC9S08GT8ACFDER from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 8 KB flash, 512 B RAM, 40-MHz CPU, and integrated peripherals including dual SCI, SPI, I²C, 10-bit ADC, and dual TPM timer/PWM modules. It operates from 1.8–3.6 V and targets low-power industrial sensor nodes and motor control interfaces.
For engineers reviewing the MC9S08GT8ACFDER datasheet, MC9S08GT8ACFDER pinout, MC9S08GT8ACFDER application, or MC9S08GT8ACFDER equivalent, key selection criteria include QFN-32 package compatibility, internal FLL clocking with ±0.5% stability across voltage/temperature, background debug support via single-wire BKGD interface, and FLASH security with block protection.
Technical Context
The MC9S08GT8ACFDER implements the HCS08 CPU core with HC08 instruction set extension (BGND), supporting up to 32 interrupt/reset sources and three ultra-low-power stop modes. Its internal clock generator (ICG) provides FEI/FEE/FBE modes using internal reference or external crystal/resonator, with programmable trim resolution of ±0.2%.
Peripherals include two independent Timer/PWM modules (TPM1: 3-channel, TPM2: 2-channel), an 8-channel 10-bit ATD converter with configurable sample time, and dual serial interfaces (SCI1/SCI2) supporting asynchronous communication at up to 1 Mbps. All I/O ports support software-selectable pullups and high-current drive (20 mA per pin on designated outputs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | HCS08 8-bit CPU, 40-MHz max bus frequency |
| Memory | 8 KB on-chip FLASH (1.8 V program/erase), 512 B RAM |
| ADC | 8-channel, 10-bit ATD with 7–21 µs conversion time |
| Clock System | Internal FLL with ±0.5% deviation over voltage/temp; supports crystal (32 kHz–4 MHz), resonator, or external clock input |
| I/O Capability | Up to 28 general-purpose I/O pins in 32-pin QFN; 8 pins rated for 20 mA sink/source |
| Power Modes | Run, Wait, Stop1/Stop2/Stop3; real-time interrupt (RTI) active in all modes |
| Debug Interface | Single-wire background debug (BKGD) with breakpoint and ICE trace support |
Pinout & Package
MC9S08GT8ACFDER is housed in a 32-pin QFN package (98ASA00473D) with 5 mm × 5 mm body, 0.5 mm pitch, and exposed thermal pad. Pinout conforms to Freescale's MC9S08GT16A/GT8A series mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains: VDD/VSS for digital logic; VDDAD/VSSAD for analog subsystem (ADC, bandgap) |
| PTG1/XTAL, PTG2/EXTAL | Oscillator interface | Crystal/resonator connection points; supports low-frequency (32 kHz) or high-frequency (up to 4 MHz) timing sources |
| PTG0/BKGD/MS | Background debug / mode select | Single-wire debug channel; also selects boot mode (internal reset vector vs. user vector table) |
| RESET | Active-low reset input | External reset assertion; internal LVD/COP reset output drives this pin open-drain during fault conditions |
| IRQ | External interrupt request | Edge- or level-sensitive interrupt input; configurable via IRQSC register; supports wake-from-stop |
| PTA0–PTA7 | Port A I/O + KBI | 8-bit port with keyboard interrupt capability; each pin supports pullup enable and slew-rate control |
| PTB0–PTB7 | Port B I/O + ADC inputs | 8-bit port; PTA0–PTA7 and PTB0–PTB7 serve as ADC channel inputs (AN0–AN7) |
| PTC0–PTC7 | Port C I/O + SCI2/IIC/High-current drivers | 8-bit port; includes SCI2 TX/RX, I²C SCL/SDA, and four 20-mA output pins (PTC0–PTC3) |
Key Features
| Feature | Design Value |
|---|---|
| FLASH Security & Protection | Block-level write/erase protection and full FLASH security lock preventing read-out or debug access |
| Low-Voltage Detection (LVD) | Configurable trip point (1.9–2.7 V); generates reset or interrupt on undervoltage condition |
| Real-Time Interrupt (RTI) | Free-running 16-bit counter with programmable period (0.5 ms–512 ms); active in Run, Wait, and Stop modes |
| Timer/PWM Flexibility | Dual TPM modules: TPM1 supports 3-channel edge-aligned PWM; TPM2 supports 2-channel center-aligned PWM with dead-time insertion |
| Internal Clock Trim | ICGTRM register allows ±0.2% fine-tuning of internal reference; enables accurate baud rate generation without external crystal |
Applications
| Industrial Sensor Node | Brushless DC Motor Control |
|---|---|
|
Use Scenario: Compact environmental monitoring unit with temperature/humidity sensors, local display, and RS-485 communication. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, UART protocol framing, and low-power sleep scheduling. Use Value: Integrated 10-bit ADC eliminates external converter; dual SCI enables simultaneous host comms and sensor network interface; Stop3 mode draws <1 µA for battery longevity. |
Use Scenario: 3-phase BLDC commutation in HVAC blowers with Hall-effect feedback and current sensing. IC Role / Device Role / Timing Role: Real-time motor controller executing six-step commutation logic and PWM timing with precise phase alignment. Use Value: Dual TPM modules generate synchronized 3-phase PWM with programmable dead time; high-current I/O pins directly drive gate drivers; RTI ensures consistent commutation timing across power modes. |
| Smart Thermostat Interface | LED Lighting Dimming Module |
|
Use Scenario: Residential thermostat with touch keypad, LCD, and wireless sub-GHz transceiver interface. IC Role / Device Role / Timing Role: Human interface manager handling keyboard scan, display update, and transceiver command buffering. Use Value: Keyboard interrupt (KBI) module scans 8×8 matrix with no CPU overhead; internal pullups reduce BOM count; 20-mA I/O drives LCD backlight directly. |
Use Scenario: DALI-compliant LED driver with analog dimming and thermal foldback protection. IC Role / Device Role / Timing Role: DALI protocol interpreter and PWM dimming engine with adaptive current regulation. Use Value: I²C interface configures external LED driver ICs; 10-bit ADC monitors heatsink temperature and output current; dual SCI supports DALI master/slave roles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08GT16ACFDER | 16 KB FLASH, 1 KB RAM; identical pinout, peripherals, and package | Required when firmware exceeds 8 KB or additional RAM is needed for buffer-intensive protocols | Select MC9S08GT16ACFDER if future firmware expansion or larger data buffers are anticipated; otherwise MC9S08GT8ACFDER offers optimal cost/performance balance. |
| S9KEAZ128AMLH | ARM Cortex-M0+ core, 128 KB FLASH, 16 KB RAM, 48 MHz; different architecture and toolchain | Needed for higher throughput, USB connectivity, or RTOS-based designs beyond HCS08 capability | Choose S9KEAZ128AMLH only when migrating to ARM ecosystem or requiring >40 MIPS performance; not drop-in compatible with MC9S08GT8ACFDER. |
Compared with MC9S08GT16ACFDER, the MC9S08GT8ACFDER reduces FLASH/RAM by 50% but maintains identical peripheral set, power profile, and debug interface-ideal for cost-sensitive volume production. Versus S9KEAZ128AMLH, it trades raw performance for lower power, simpler toolchain, and legacy code compatibility.
Availability
MC9S08GT8ACFDER is available at Aetrix Electronics and suitable for industrial sensor nodes, BLDC motor controllers, smart thermostats, and LED lighting dimming modules requiring stable component supply and long-term lifecycle support.
Supply support for MC9S08GT8ACFDER 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 roots in Freescale's microcontroller heritage.
The MC9S08GT8ACFDER belongs to the HCS08 family designed for cost-effective, ultra-low-power embedded control in resource-constrained environments where deterministic real-time response and minimal external components are critical.
FAQ
What is the maximum operating frequency of the MC9S08GT8ACFDER?
The MC9S08GT8ACFDER features a 40-MHz HCS08 CPU core with bus frequency scalable via internal FLL. Its maximum system clock is 40 MHz, achievable using external 4-MHz crystal with FLL multiplication (×10), or internal reference with trim optimization. The actual bus speed depends on ICG configuration and external clock source stability.
Does the MC9S08GT8ACFDER support in-circuit debugging?
Yes, the MC9S08GT8ACFDER includes a single-wire background debug (BKGD) interface compliant with Freescale's BDM specification. It supports real-time bus capture, breakpoint setting, and on-chip ICE trace with eight-deep FIFO. Debug requires only one dedicated pin (PTG0/BKGD/MS) and is fully functional in all power modes except Stop3.
What are the power supply requirements for the MC9S08GT8ACFDER?
The MC9S08GT8ACFDER operates from 1.8 V to 3.6 V on VDD/VSS, with separate analog supply pins (VDDAD/VSSAD) that must be tied to VDD/VSS. It supports FLASH programming down to 1.8 V and includes low-voltage detection circuitry with configurable thresholds (1.9–2.7 V) to trigger reset or interrupt on undervoltage events.
Can the MC9S08GT8ACFDER generate PWM signals for motor control?
Yes, the MC9S08GT8ACFDER integrates two Timer/PWM modules: TPM1 (3-channel) and TPM2 (2-channel). Each supports edge-aligned and center-aligned PWM with programmable period, duty cycle, and prescaler. TPM1 channels can be combined for complementary outputs with dead-time insertion-enabling direct 3-phase BLDC commutation without external logic.
Is the MC9S08GT8ACFDER pin-compatible with other members of the GT series?
Yes, the MC9S08GT8ACFDER shares identical 32-pin QFN pinout and peripheral mapping with MC9S08GT16ACFDER and MC9S08GT32ACFDER. All GT-series 32-pin variants use the same 98ASA00473D package outline and support interchangeable PCB layout-allowing hardware reuse across memory variants during design scaling.
MC9S08GT8ACFDER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- S08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 40MHz
- Connectivity:
- I2C, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 39
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08GT8ACFDER FAQ
1.How can I place an order for MC9S08GT8ACFDER through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08GT8ACFDER 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 MC9S08GT8ACFDER reliable?
The price and inventory of MC9S08GT8ACFDER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08GT8ACFDER is usually 5 days.
3.What payment methods are accepted for MC9S08GT8ACFDER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08GT8ACFDER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08GT8ACFDER?
MC9S08GT8ACFDER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08GT8ACFDER 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 MC9S08GT8ACFDER?
For technical support, including MC9S08GT8ACFDER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08GT8ACFDER requirements.
6.How does Aetrix verify that MC9S08GT8ACFDER is sourced from the original manufacturer or authorized distributors?
All MC9S08GT8ACFDER 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 MC9S08GT8ACFDER meets industry standards.
7.What is the process for return or replacement of MC9S08GT8ACFDER?
All MC9S08GT8ACFDER units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08GT8ACFDER, 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 MC9S08GT8ACFDER part is unused and in its original packaging.
Return procedure for MC9S08GT8ACFDER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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