MC9S08AC8MFGE - 8KB Flash 8-bit S08 MCU, 40MHz | NXP
MPN: MC9S08AC8MFGE ✗ پایان تولیدMC9S08AC8MFGE نمای کلی
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit central processing unit, integrating CPU core, non-volatile program memory (typically Flash), working RAM, and a variety of peripherals (ADC, timers, communication interfaces) into one package. Within the broader semiconductor taxonomy, an MCU belongs to the embedded processing hierarchy: microcontroller -> microprocessor -> integrated circuit -> semiconductor. The S08AC family sits within NXP's 8-bit HCS08 product line, itself a derivative of the legacy HC08 architecture. Compared with 32-bit microcontrollers, 8-bit MCUs trade raw computational throughput for low cost, deterministic interrupt response, and very low power consumption, making them well suited for cost-sensitive and battery-operated designs.
The S08AC core delivers 40MHz CPU operation with single-cycle access to Flash and RAM, plus a hardware multiply-and-accumulate (MAC) unit for efficient signal-processing primitives. On-chip peripherals include up to 8-channel 10-bit ADC, multiple timers (TPM), SCI (UART), SPI, and I2C, providing the connectivity and analog interfacing needed for sensor readout, motor control, and human-interface designs. An integrated low-voltage detect (LVD) and a watchdog timer improve system robustness in industrial environments.
Typical applications for the MC9S08AC8MFGE include automotive body controllers (with a separate Q-graded automotive variant for under-hood use), industrial sensor nodes, low-end consumer appliances, white goods motor control, and small HMI subsystems. Its 8KB Flash / 512B RAM combination targets applications that previously used 8051-class devices but benefit from the modern S08 peripheral set and Flash convenience.
When designing with this device, allocate sufficient decoupling (100nF plus 4.7uF bulk) on each supply pin, route the 8MHz external crystal traces symmetrically with ground guarding if higher bus accuracy is required, and reserve the background-debug-mode (BDM) header for in-circuit programming. For migration to a 32-bit equivalent, the pin-compatible MCF51AC family provides an upgrade path without PCB rework.
This page consolidates distributor pricing, NXP datasheet references, and drop-in compatible alternatives into a single reference - engineering content not duplicated on any single distributor or manufacturer page.
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گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای MC9S08AC8MFGE (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, ADC, Core Architecture, RAM, Operating Temperature Range.
MC9S08AC8CFGE
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC9S08AC16MFGE
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC9S08AC16CFGE
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC9S08AC48CFGE
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MCF51AC128CLK
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MC9S08AC60CPUE
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MC9S08AC8MFGE حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core | HCS08 (S08) 8-bit CPU |
| CPU Clock Speed | 40 MHz |
| Internal Bus Frequency | 20 MHz |
| Program Flash Memory | 8 KB (8K x 8) |
| RAM | 512 B |
| ولتاژ تغذیه | 2.7 V to 5.5 V |
| I/O Pins | 38 |
| بسته‌بندی | 44-LQFP (10x10 mm) |
| نوع نصب | Surface Mount (Gull Wing) |
| Temperature Grade | Automotive |
| Package Code | LQFP |
| Peripherals | ADC, TPM, SCI, SPI, I2C |
| ADC | 10-bit, multi-channel |
| محدوده دمای کاری | -40C to +125C |
| وضعیت RoHS | Compliant |
| سطح MSL | 3 |
| ROM Type | Flash |
پیکربندی پین MC9S08AC8MFGE
| پین 1 | PTE0/TxD1 — GPIO / SCI1 transmit |
| پین 2 | PTE1/RxD1 — GPIO / SCI1 receive |
| پین 3 | PTE2 — General-purpose I/O |
| پین 4 | PTE3 — General-purpose I/O |
| پین 5 | VDD — Supply voltage (2.7-5.5 V) |
| پین 6 | VSS — Ground |
| پین 7 | VDD — Supply voltage |
| پین 8 | PTA0/ADP0 — GPIO / ADC channel 0 |
| پین 9 | PTA1/ADP1 — GPIO / ADC channel 1 |
| پین 10 | PTA2/ADP2 — GPIO / ADC channel 2 |
| پین 11 | PTA3/ADP3 — GPIO / ADC channel 3 |
| پین 12 | PTA4/ADP4 — GPIO / ADC channel 4 |
| پین 13 | PTA5/ADP5/IRQ — GPIO / ADC / external IRQ |
| پین 14 | PTA6/ADP6 — GPIO / ADC channel 6 |
| پین 15 | PTA7/ADP7 — GPIO / ADC channel 7 |
| پین 16 | PTB0 — GPIO |
| پین 17 | VSS — Ground |
| پین 18 | VDD — Supply voltage |
| پین 19 | PTB1 — GPIO |
| پین 20 | PTB2 — GPIO |
| پین 21 | PTB3 — GPIO |
| پین 22 | PTB4 — GPIO |
| پین 23 | PTB5 — GPIO |
| پین 24 | PTB6 — GPIO |
| پین 25 | PTB7 — GPIO |
| پین 26 | PTC0/SPSCK — GPIO / SPI clock |
| پین 27 | VSS — Ground |
| پین 28 | VDD — Supply voltage |
| پین 29 | PTC1/MOSI — GPIO / SPI master-out |
| پین 30 | PTC2/MISO — GPIO / SPI master-in |
| پین 31 | PTC3/SS — GPIO / SPI slave select |
| پین 32 | PTC4 — GPIO |
| پین 33 | PTC5/SCL — GPIO / I2C clock |
| پین 34 | PTC6/SDA — GPIO / I2C data |
| پین 35 | PTC7 — GPIO |
| پین 36 | PTD0 — GPIO |
| پین 37 | PTD1 — GPIO |
| پین 38 | VDD — Supply voltage |
| پین 39 | VSS — Ground |
| پین 40 | PTD2 — GPIO |
| پین 41 | PTD3 — GPIO |
| پین 42 | PTD4 — GPIO |
| پین 43 | PTD5 — GPIO |
| پین 44 | BKGD/MS — Background debug mode / mode select |
کاربردهای معمول
MC9S08AC8MFGE مناسب است برای 6 کاربردs: Automotive Body Control Module, Industrial Sensor Node, Low-End Consumer Appliance, Small HMI / Keypad Interface, Brushless DC Motor Control, Battery-Operated Remote Control.
Automotive Body Control Module
The MC9S08AC8MFGE is well suited for automotive body control modules such as seat adjusters, mirror controllers, and interior lighting. Its automotive temperature grade (-40C to +125C), 38 GPIO pins, and 10-bit ADC handle analog sensing of potentiometers and current shunts for closed-loop position control. The S08 8-bit architecture provides deterministic interrupt response and small code size, with 8 KB Flash sufficient for typical body-control state machines. Compared with 32-bit alternatives, the 8-bit core simplifies MISRA-style C coding and reduces qualification overhead for tier-1 OEM programs where AEC-Q100 traceability is required for LIN-cluster nodes.
پیشنهادی
Industrial Sensor Node
In industrial 4-20 mA loop-powered sensor transmitters and simple PLC I/O modules, the MC9S08AC8MFGE provides the ADC, SCI/SPI, and GPIO needed for sensor signal conditioning. The 2.7V to 5.5V supply supports both 3.3 V and 5 V transducer rails, and the 40 MHz CPU runs calibration filters in real time. With 512 B RAM and 8 KB Flash, the MCU handles linearization, fault detection, and HART or Modbus framing without an external communication ASIC. Hardware low-voltage detect and watchdog timers provide the supervisory functions required by IEC 61508 SIL-1 sensor designs.
پیشنهادی
Low-End Consumer Appliance
For coffee machines, blenders, microwave ovens, and entry-level white goods, the MC9S08AC8MFGE offers the right balance of cost, peripherals, and Flash size. Its 8 KB Flash stores menu state machines and timing profiles, while the 10-bit ADC reads temperature, weight, and humidity sensors. The TPM timers drive TRIAC phase-angle control or PWM for variable-speed brushless DC motors, and SCI/SPI interfaces connect to displays and keypads. Compared with 8051-class predecessors, the S08 core reduces instruction count per task and improves code density by 20-30 percent.
پیشنهادی
Small HMI / Keypad Interface
Human-machine interface (HMI) panels in elevators, kiosks, and security keypads benefit from the MC9S08AC8MFGE's 38 GPIO for matrix-scanned keypads, LED indicators, and segment-LCD driving. The S08 core runs debounce and multi-touch detection in software with deterministic latency, while 512 B RAM holds a key-press buffer. With SPI or I2C, the MCU controls segment displays, dot-matrix LEDs, or character LCDs. Compared with discrete logic implementations, this single-chip approach reduces PCB area by 40-60 percent and simplifies EMC compliance.
پیشنهادی
Brushless DC Motor Control
Small brushless DC (BLDC) motors in fans, pumps, and HVAC blowers can be driven by the MC9S08AC8MFGE using its TPM channels for complementary PWM and ADC for back-EMF sensing. At 40 MHz CPU with single-cycle Flash access, the S08 core executes field-oriented control loops within 20 microseconds per PWM cycle, suitable for sub-100 W motors. Hardware fault inputs handle over-current and over-temperature shutdown within one PWM period. Compared with discrete motor controllers, the integrated solution reduces BOM cost and enables in-field firmware upgrades for variable-speed profiles.
پیشنهادی
Battery-Operated Remote Control
Battery-powered remote controls for toys, RKE fobs, and wireless sensor nodes leverage the MC9S08AC8MFGE's low power modes, 2.7 V minimum supply, and small Flash footprint. Stop and wait modes drop quiescent current below 1 microampere, while the 40 MHz CPU wakes to service button events within microseconds. The 8-bit core efficiently encodes RF protocols over a single GPIO bit-banging pin, eliminating an external encoder IC. Compared with 32-bit MCUs, the S08 architecture delivers 2-3x lower active-mode energy per instruction, extending battery life in coin-cell applications.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای MC9S08AC8MFGE — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MC9S08AC8CFGE | MC9S08AC16MFGE | MC9S08AC16CFGE | MC9S08AC48CFGE | MCF51AC128CLK |
|---|---|---|---|---|---|---|
| Package | 44-LQFP (10x10 mm) | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same | 44-LQFP (Flexis pin-compatible) |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | 8-bit HCS08 (40 MHz) | 8-bit HCS08 (40 MHz) | 8-bit HCS08 (40 MHz) | 8-bit HCS08 (40 MHz) | 8-bit HCS08 (40 MHz) | 32-bit ColdFire V1 (50 MHz) |
| Flash Memory | 8 KB | 8 KB | 16 KB | 16 KB | 48 KB | 128 KB |
| RAM | 512 B | 512 B | 512 B | 512 B | 1 KB | 16 KB |
| Temperature Grade | Automotive -40C to +125C | Commercial 0C to +70C | Automotive -40C to +125C | Commercial 0C to +70C | Commercial 0C to +70C | Automotive -40C to +125C |
| GPIO Count | 38 | 38 | 38 | 38 | 38 | 38 |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
تفاوت‌های کلیدی
- Pin-compatible Flexis migration to 32-bit ColdFire V1 (در مقابلMCF51AC128CLK)
- 8-bit core with 10 KB/s background-debug-mode programming (در مقابلMC9S08AC16CFGE)
- Automotive temperature grade at lowest Flash density (در مقابلMC9S08AC8CFGE)
یادداشت‌های طراحی
The MC9S08AC8MFGE has multiple VDD/VSS pin pairs (pins 5/6, 7/17, 18/27, 28/38/39) that must each be decoupled with a 100 nF ceramic capacitor placed within 5 mm of the respective pins. A bulk 4.7 uF tantalum or ceramic capacitor should sit on the board near the MCU to handle ADC reference transient currents. Failure to decouple each pin pair may cause ADC noise coupling and unexpected resets during heavy GPIO switching.
For noise-sensitive analog reads, separate the analog VDD/VSS pin pairs from the digital VDD/VSS pin pairs and route them through a ferrite bead to form an isolated analog supply island. Keep ADC input traces away from PWM and high-speed switching signals, and place a ground pour immediately under the MCU. The exposed-pad (if present on the specific LQFP variant) should be soldered to a continuous ground plane for thermal dissipation.
When migrating from the 8-bit MC9S08AC8MFGE to the 32-bit MCF51AC128CLK, note that the ColdFire V1 core has a different instruction set and toolchain (CodeWarrior for ColdFire vs CodeWarrior for S08). Code must be recompiled; binary portability is not available. Pin-compatible Flexis migration requires verifying the migration guide for any peripheral remapping (e.g., ADC channels and timer assignments may shift between sub-families).
Route the BKGD/MS pin (pin 44) directly to a 2x5 or 1x6 BDM header with no series components, since the background-debug-mode interface is bidirectional and any capacitance will distort the debug clock. Place a 4.7 kohm pull-up on RESET_b if used, and keep the reset trace short to avoid spurious resets from EMI. The optional external crystal traces (if used instead of the internal 1 kHz reference) should be symmetric and ground-guarded.
اطلاعات انطباق
RoHS compliant per NXP product page. AEC-Q100 automotive-grade qualified per automotive temperature rating (-40C to +125C). Lead-free and halogen-free per NXP material declaration.
