MCHC908QT4VDWER - 8-bit HC08 MCU 4KB Flash 8MHz | NXP
MPN: MCHC908QT4VDWER ✗ סוף ייצורMCHC908QT4VDWER סקירה
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory (typically FLASH), volatile data memory (RAM), and peripheral set on one die. MCUs sit inside the embedded systems hierarchy as compact computing engines for sensor reading, actuator control, and human-machine interface tasks where a full microprocessor plus external chipset would be cost- and footprint-prohibitive. The MCHC908QT4 part occupies the small-footprint, low-pin-count end of the 8-bit MCU taxonomy, sharing its lineage with the broader M68HC05 and M68HC08 Motorola/NXP lineages.
Key features include 4KB FLASH for application and user application, 128 bytes RAM, 5 GPIO pins, an on-chip ADC, LVD and PWM modules, and an operating voltage range suitable for 3V to 5V systems. The DWE package designation corresponds to an 8-pin SOIC with tape-and-reel packaging, making it compatible with standard surface-mount assembly lines. The HC08 core offers a straightforward instruction set for assembly and C-language firmware development.
The part targets cost-sensitive applications where a small MCU with analog conversion and pulse-width modulation can replace discrete analog circuitry. With 4KB of FLASH and 5 I/O, the device is well-suited to single-function control loops such as simple motor control, LED driving, and basic user-interface handling. The legacy M68HC08 architecture provides deterministic interrupt latency for real-time control tasks.
Typical applications include appliance control modules, small consumer products, sensor interface nodes, LED lighting controllers, and battery-powered devices requiring low standby current. The 5 I/O pins constrain the part to designs where external circuitry can be driven with minimal GPIO.
When designing with this device, ensure the firmware budget fits the 4KB FLASH limit and that the 5 GPIO pins adequately cover all required inputs and outputs. For designs needing more memory or peripherals, the HC908QT2 (2KB) and HC908QY families offer pin-compatible scaling.
חלופות תחליף ישיר עבור MCHC908QT4VDWER — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם MCHC908QT4VDWER (אותו גורם צורה וטביעת רגל) — שונים ב Package, ADC, Program Memory Size, Architecture, Maximum Clock Frequency.
MCHC908QT2VDWER
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MCHC908QT1VDWER
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MC68HC908QT4CDWE
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MCHC908QT4CDWE
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MCHC908QT4VDWEFG
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
MCHC908QT4VDWER דירוגים מרביים ומאפיינים חשמליים
| Core Processor | HC08 |
| Core Size | 8-Bit |
| Program Memory Size | 4 KB (4K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 128 x 8 (128 bytes) |
| Speed | 8 MHz |
| Number of I/O | 5 |
| Peripherals | LVD, POR, PWM |
| ADC | Yes (integrated) |
| מארז | 8-SOIC (DWE), tape and reel |
| סוג הרכבה | Surface Mount |
| Series | HC08, HC908QT1/2/4 |
| Part Status | Not For New Designs |
תצורת פינים של MCHC908QT4VDWER
| פין 1 | PTA0/AD0/TCLK — Port A bit 0 / ADC channel 0 / Timer clock input |
| פין 2 | PTA1/AD1 — Port A bit 1 / ADC channel 1 |
| פין 3 | VDD — Power supply |
| פין 4 | VSS — Ground |
| פין 5 | PTA2/AD2 — Port A bit 2 / ADC channel 2 |
| פין 6 | PTA3/AD3 — Port A bit 3 / ADC channel 3 |
| פין 7 | PTA4/AD4 — Port A bit 4 / ADC channel 4 |
| פין 8 | RST — Reset input (active low) |
יישומים טיפוסיים
MCHC908QT4VDWER מתאים עבור 6 יישוםs: Appliance Control Module, LED Lighting Controller, Battery-Powered Sensor Node, Small Consumer Electronics, Simple Motor Control, Industrial Sensor Interface.
Appliance Control Module
The MCHC908QT4VDWER fits small appliance control boards where its 4 KB FLASH holds a state-driven firmware and the on-chip PWM directly drives a heater element or small motor. With 5 GPIO and the integrated ADC, the part reads temperature sensors or potentiometers without external converters. The HC08 deterministic interrupt latency supports the real-time control loop needed for closed-loop temperature regulation in toasters, coffee makers, or hair dryers.
מומלץ
LED Lighting Controller
For low-cost LED driver boards, the MCHC908QT4VDWER's on-chip PWM module and 5 GPIO pins are sufficient to dim and switch LED arrays in decorative or indicator lighting. The HC08 core runs a simple fade or chase pattern firmware within 4 KB FLASH. Low quiescent current and the small 8-pin SOIC footprint enable compact lamp-driver PCAs without external DAC or PWM ICs.
מומלץ
Battery-Powered Sensor Node
In small wireless or wired sensor nodes, the MCHC908QT4VDWER handles periodic sensor sampling with the integrated converter and transmits results over a single-wire or GPIO-bit-banged interface. With 128 bytes RAM and the HC08 low-power modes, the part suits battery-powered nodes that wake, sense, and sleep. The 8-pin SOIC saves board area, leaving room for a coin-cell holder and a single analog front-end.
מומלץ
Small Consumer Electronics
The MCHC908QT4VDWER targets single-function consumer products such as remote-control key fobs, simple toys, and personal electronics accessories. The HC08 instruction set supports small C-language or assembly firmware, and 4 KB FLASH is sufficient for button-decode, LED-indicator, and basic state-machine logic. The 8-pin SOIC surface-mount package is compatible with high-volume SMT lines.
מומלץ
Simple Motor Control
For brushed DC motor or small fan-speed control, the MCHC908QT4VDWER's PWM output and ADC input close a single-motor speed-control loop with no external driver IC beyond a discrete H-bridge. The HC08 core reads a feedback signal (tach or current sense) and adjusts PWM duty. The 5 GPIO includes PWM and ADC channels plus enable logic.
מומלץ
Industrial Sensor Interface
In factory-floor sensor-interface boards, the MCHC908QT4VDWER conditions and digitizes analog sensor signals via the integrated ADC and presents the result over a simple GPIO-based protocol. The HC08 deterministic interrupt handling ensures consistent sample timing. The 8-pin SOIC package drops into space-constrained sensor-head modules where board area is at a premium.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור MCHC908QT4VDWER — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | MCHC908QT2VDWER | MCHC908QT1VDWER | MC68HC908QT4CDWE |
|---|---|---|---|---|
| Package | 8-SOIC (DWE) | 8-SOIC (DWE) - same | 8-SOIC (DWE) - same | 8-SOIC (DWE) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Program Memory (FLASH) | 4 KB | 2 KB (-50%) | 1.5 KB (-62%) | 4 KB (same) |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Core Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| GPIO Pins | 5 | 5 | 5 | 5 |
| ADC | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) |
| Lifecycle Status | NRND | NRND | NRND | Obsolete |
| Peripherals | LVD, POR, PWM, ADC | LVD, POR, PWM, ADC | LVD, POR, PWM, ADC | LVD, POR, PWM, ADC |
מבדילים עיקריים
- Largest FLASH in HC908QT SOIC family (לעומתMCHC908QT2VDWER)
- Same die as legacy MC68HC908 prefix (לעומתMC68HC908QT4CDWE)
- Compact 8-SOIC package with ADC (לעומתHC908QY4CDWE)
הערות תכנון
The MCHC908QT4VDWER requires a clean VDD supply with adequate decoupling. Place a 100 nF ceramic capacitor as close as possible to the VDD pin, with a 10 uF bulk capacitor on the same supply rail. The integrated POR (Power-On Reset) handles safe startup; designers should verify that VDD rise time stays within the datasheet specification to avoid incomplete initialization. Estimated: at 8 MHz CPU and VDD = 5 V, active current is typically in the 5-15 mA range per NXP HC08 family datasheets.
The 8-pin SOIC footprint is compatible with standard surface-mount assembly lines using 1.27 mm pitch SOIC-8 land patterns. Maintain at least 0.5 mm clearance between the SOIC body and adjacent traces to avoid solder-bridge defects during reflow. The exposed pad is not present on this package, so no thermal pad via stitching is required. Engineers should follow the land-pattern dimensions in the NXP package outline document.
Because the part is marked Not For New Designs, do not start new 2026 designs with the MCHC908QT4VDWER. Existing production lines should confirm long-term supply with NXP or authorized distributors before placing volume orders. The 4 KB FLASH limit constrains firmware; designs approaching that ceiling should migrate to an active S08 or Kinetis part with at least 16 KB FLASH. Always verify pin compatibility when migrating from the legacy MC68HC908 prefix to the MCHC908 prefix.
מידע על תאימות
RoHS compliance and lead-free status inferred from NXP product-page packaging information; specific REACH and conflict-minerals statements not retrieved in the verified web data.
