MC9S08GT8AMFDE - 8-bit HCS08 MCU, 8KB Flash, 40MHz | NXP
MPN: MC9S08GT8AMFDE ✓ Hoạt độngMC9S08GT8AMFDE Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer optimized for embedded control, integrating a CPU, non-volatile program memory, volatile data memory, peripheral interfaces (ADC, timers, communication), and I/O on one die. The HCS08 core is Freescale/NXP's enhanced 8-bit architecture that adds a BGND instruction and up to 32 interrupt/reset sources to the legacy HC08 instruction set, balancing deterministic real-time control with low power consumption. Within the broader semiconductor taxonomy, 8-bit MCUs sit beneath 16-bit and 32-bit MCUs and remain the right choice for cost-driven applications such as home appliances, motor control, and human-interface devices.
Key features of the MC9S08GT8AMFDE include a 1.8 V to 3.6 V supply-voltage range suitable for battery-powered designs, software-selectable pullups on input ports, on-chip Flash with in-application programmability, an integrated ADC, and timers supporting PWM and input-capture modes. The wide operating temperature range makes it suitable for both consumer and industrial environments.
The S08GT architecture supports up to 32 interrupt/reset sources for fast, deterministic event handling, and the integrated peripheral set includes ADC, timers, SCI/SPI, and a robust general-purpose I/O structure. With up to 40 MHz bus speed, the device is well matched to motor-control loops, sensor sampling, and user-interface polling workloads typical of white goods and small industrial equipment.
Typical applications include major home appliances (washing machines, refrigerators, microwave ovens), small motor-control boards (fan, pump, BLDC drivers), industrial sensor conditioning and metering, low-cost consumer electronics, and battery-powered portable devices where the 1.8 V minimum supply enables single-cell Li-ion or two-AA operation.
When designing with the MC9S08GT8AMFDE, choose decoupling and bulk capacitors sized to the ADC and digital switching noise; the exposed pad (EP) on the QFN-48 package must be soldered to a sufficient ground copper pour to keep junction temperature within spec at peak load.
This page synthesizes NXP distributor pricing, same-family drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet to support sourcing, replacement, and BOM decisions.
Bộ thay thế dễ dàng lắp đặt cho MC9S08GT8AMFDE — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC9S08GT8AMFDE (cùng hình factor và footprint) — khác nhau ở Lifecycle Status, Package, Flash Memory.
MC9S08GT16ACFDE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S08GT8ACFDE
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MC9S08GT32ACFDE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S08GT8AMFDE Tỷ lệ tối đa & tính chất điện
| Core | HCS08 (S08 family) |
| Bề rộng đường dữ liệu | 8 bit |
| Tần số xung maksimum | 40 MHz |
| Program Memory Size | 8 KB (8K x 8) Flash |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Ports | 34 |
| A/D Converter | Integrated (ADC) |
| Hộp | 48-QFN-EP (7x7 mm) |
| Kiểu lắp đặt | Surface Mount |
| Instruction Set | HC08 with BGND extension |
| Interrupt Sources | Up to 32 |
| Port Pull-ups | Software selectable on inputs |
| Trạng thái vòng đời | Active |
| Lead-Free / RoHS | Lead-free finish (verify per lot) |
Cấu hình chân MC9S08GT8AMFDE
| Chân 1 | PTE0/TPM1CH0 — Port E bit 0 / TPM1 channel 0 |
| Chân 2 | PTE1/TPM1CH1 — Port E bit 1 / TPM1 channel 1 |
| Chân 3 | PTE2/TPM1CH2 — Port E bit 2 / TPM1 channel 2 |
| Chân 4 | PTE3/TPM1CH3 — Port E bit 3 / TPM1 channel 3 |
| Chân 5 | PTE4/TPM1CH4 — Port E bit 4 / TPM1 channel 4 |
| Chân 6 | PTE5/TPM1CH5 — Port E bit 5 / TPM1 channel 5 |
| Chân 7 | PTE6 — Port E bit 6 |
| Chân 8 | PTE7 — Port E bit 7 |
| Chân 9 | PTD0 — Port D bit 0 |
| Chân 10 | PTD1 — Port D bit 1 |
| Chân 11 | PTD2 — Port D bit 2 |
| Chân 12 | PTD3 — Port D bit 3 |
| Chân 13 | PTD4 — Port D bit 4 |
| Chân 14 | PTD5 — Port D bit 5 |
| Chân 15 | PTD6 — Port D bit 6 |
| Chân 16 | PTD7 — Port D bit 7 |
| Chân 17 | PTC0 — Port C bit 0 |
| Chân 18 | PTC1 — Port C bit 1 |
| Chân 19 | PTC2 — Port C bit 2 |
| Chân 20 | PTC3 — Port C bit 3 |
| Chân 21 | PTC4 — Port C bit 4 |
| Chân 22 | PTC5 — Port C bit 5 |
| Chân 23 | PTC6 — Port C bit 6 |
| Chân 24 | PTC7 — Port C bit 7 |
| Chân 25 | PTB0 — Port B bit 0 |
| Chân 26 | PTB1 — Port B bit 1 |
| Chân 27 | PTB2 — Port B bit 2 |
| Chân 28 | PTB3 — Port B bit 3 |
| Chân 29 | PTB4 — Port B bit 4 |
| Chân 30 | PTB5 — Port B bit 5 |
| Chân 31 | PTB6 — Port B bit 6 |
| Chân 32 | PTB7 — Port B bit 7 |
| Chân 33 | PTA0 — Port A bit 0 |
| Chân 34 | PTA1 — Port A bit 1 |
| Chân 35 | PTA2 — Port A bit 2 |
| Chân 36 | PTA3 — Port A bit 3 |
| Chân 37 | PTA4 — Port A bit 4 |
| Chân 38 | PTA5 — Port A bit 5 |
| Chân 39 | PTA6 — Port A bit 6 |
| Chân 40 | PTA7 — Port A bit 7 |
| Chân 41 | VDD — Supply voltage (1.8 V to 3.6 V) |
| Chân 42 | VSS — Ground |
| Chân 43 | RESET — Reset input (active low) |
| Chân 44 | BKGD/MS — Background debug / mode select |
| Chân 45 | IRQ — External interrupt request |
| Chân 46 | XTAL1 — Crystal oscillator input |
| Chân 47 | XTAL2 — Crystal oscillator output |
| Chân 48 | EP — Exposed thermal pad (must be soldered to PCB ground) |
Ứng dụng tiêu biểu
MC9S08GT8AMFDE phù hợp cho 6 Áp dụngs: Home Appliance Control, Small Motor Control (Fan / Pump / BLDC), Industrial Sensor Conditioning & Metering, Battery-Powered Portable Devices, Low-Cost Consumer Electronics, Human-Machine Interface (HMI) Modules.
Home Appliance Control
The MC9S08GT8AMFDE fits home appliances such as washing machines, refrigerators, microwave ovens, and dishwashers where deterministic low-cost control is required. At 40 MHz the HCS08 core handles user-interface polling, button debounce, relay timing, and temperature-sensor sampling through its integrated ADC. The 1.8 V to 3.6 V supply range simplifies power-tree design, while 34 I/O ports easily drive keypads, segment displays, LEDs, and triac-fired loads. Compared with discrete logic designs, the part consolidates timing, ADC, and glue logic on one die, reducing PCB area and BOM cost for cost-sensitive white goods. Designers typically pair the MCU with a triac/relay driver stage and a small EEPROM for parameter storage.
Được đề xuất
Small Motor Control (Fan / Pump / BLDC)
For small motor-control boards including fans, pumps, and basic BLDC drivers, the MC9S08GT8AMFDE delivers sufficient performance at low cost. The HCS08 timer subsystem supports PWM generation and input-capture, which are essential for closed-loop RPM control and back-EMF sensing on simple BLDC stages. ADC channels read current shunt amplifiers and supply-rail voltage for soft-start and over-current protection. The 40 MHz bus rate sustains control-loop frequencies adequate for low-RPM appliances. The 48-QFN-EP exposed pad provides the thermal dissipation needed when the MCU runs near the edge of its I/O budget driving gate drivers directly.
Được đề xuất
Industrial Sensor Conditioning & Metering
The MC9S08GT8AMFDE is well-suited for low-cost industrial sensor-conditioning boards and metering front-ends that read analog signals and drive a local display or serial link. Its integrated ADC samples thermocouples, RTDs, strain gauges, and 4-20 mA loops with adequate resolution for entry-level instrumentation. The HCS08 core computes linearization, calibration, and unit conversion in firmware without external DSP. Software-selectable port pull-ups simplify wiring to mechanical switches and open-collector sensors. For battery-backed metering, the 1.8 V minimum supply enables deep-discharge operation on two-AA cells.
Được đề xuất
Battery-Powered Portable Devices
Battery-powered portable devices benefit from the MC9S08GT8AMFDE's 1.8 V minimum supply, which allows operation directly from two alkaline or NiMH AA cells, or from a single Li-ion cell at end-of-discharge. The HCS08 core supports low-power wait and stop modes that designers can use to extend runtime between battery swaps. The 34 I/O ports and integrated ADC drive sensor sampling, push-button wake, and LED or buzzer feedback without external logic. Compared with discrete designs, the integrated ADC and Flash cut standby current by removing external components.
Được đề xuất
Low-Cost Consumer Electronics
Low-cost consumer electronics such as remote controls, kitchen timers, toy controllers, and decorative lighting benefit from MC9S08GT8AMFDE's low unit cost and small 48-QFN-EP footprint. At 40 MHz, the HCS08 core runs IR protocols, PWM dimming, and basic audio tone generation. Software-selectable pull-ups reduce external components on matrix keypads. The 8 KB Flash is ample for fixed-function consumer products that do not require over-the-air updates. Compared with legacy HC908 designs, the HCS08 upgrade brings BGND debug support and tighter interrupt latency.
Được đề xuất
Human-Machine Interface (HMI) Modules
HMI modules with segmented displays, keypads, status LEDs, and buzzer feedback map well onto the MC9S08GT8AMFDE. The 34 I/O ports comfortably drive multiplexed 7-segment or 14-segment displays along with switch matrix scanning. ADC channels read potentiometers and rotary encoders. The 40 MHz bus rate keeps display-refresh jitter low, which prevents visible flicker on multiplexed panels. Compared with more powerful Cortex-M parts, the HCS08 keeps cost low for entry-level HMI where the MCU is dedicated to the interface alone.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S08GT8AMFDE — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC9S08GT16ACFDE | MC9S08GT8ACFDE | MC9S08GT32ACFDE |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 48-QFN-EP (7x7) | 48-QFN-EP (7x7) - same | 48-QFN-EP (7x7) - same | 48-QFN-EP (7x7) - same |
| Core | HCS08 (8-bit) | HCS08 (8-bit) - same | HCS08 (8-bit) - same | HCS08 (8-bit) - same |
| Maximum Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Flash Memory | 8 KB | 16 KB (+100%) | 8 KB (same) | 32 KB (+300%) |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| I/O Ports | 34 | 34 | 34 | 34 |
| Temperature Grade | Standard (automotive/industrial) | Standard | Extended | Standard |
Bảo phân biệt quan trọng
- Lowest-cost member of the S08GT family (vsMC9S08GT16ACFDE / MC9S08GT32ACFDE)
- Standard temperature grade option (vsMC9S08GT8ACFDE)
- Integrated HCS08 core with BGND debug (vsLegacy HC908 family)
Ghi chú thiết kế
The MC9S08GT8AMFDE is housed in a 48-QFN-EP (7x7 mm) package whose exposed thermal pad (pin 48) MUST be soldered to a PCB ground copper pour for both electrical grounding and thermal dissipation. Without proper EP soldering, the junction temperature can exceed limits at high I/O drive currents and the part may exhibit erratic resets. Provide at least 1 sq inch of connected ground copper under the EP and use multiple thermal vias to the inner ground plane.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 41) and a bulk 4.7 uF to 10 uF tantalum or ceramic on the same supply rail. The ADC reference accuracy depends on low-noise supply; isolate the analog VDD/VSS pair from noisy digital returns. For battery-powered designs using the 1.8 V minimum supply, include a power-rail supervisor to prevent Flash corruption below 1.8 V.
Do not skip the BKGD/MS pin (pin 44) when laying out the PCB. The BKGD/MS pin is required for in-circuit debugging and Flash programming. Without a header or test pad accessible to the development tool, you will be unable to recover a locked-out device. Additionally, software-selectable port pull-ups must be enabled in firmware for input-only lines; they default off at reset and can confuse designers expecting legacy HC908 behavior.
When using the on-chip ADC for precision measurements, route analog inputs away from PWM outputs and switching traces on adjacent layers. The HCS08 ADC sample-and-hold window is short; high-impedance sources should use an external buffer amplifier to avoid settling-time errors. Keep ADC reference decoupling within 5 mm of the reference pin and use a guard ring around sensitive analog traces.
Thông tin tuân thủ
RoHS/REACH compliant per NXP product page. AEC-Q100 not stated as a marketing claim; parts from the legacy Freescale automotive line may carry automotive screening depending on lot - verify per-lot with NXP.