MC908QC16CDSE - 8-bit HC08 MCU, 16KB Flash, 8MHz | NXP
MPN： MC908QC16CDSE ✓ 啟用中MC908QC16CDSE 概覽
An 8-bit microcontroller is a single-chip computer that integrates a processor core, program memory, data RAM, and peripheral functions such as timers, communication interfaces, and analog-to-digital converters on one silicon die. It sits at the entry level of the embedded control hierarchy: 8-bit MCU -> embedded controller -> system-on-chip, and remains the workhorse for cost-sensitive control tasks where 32-bit processors are unnecessary. The M68HC08 family from Motorola/Freescale/NXP is a Complex Instruction Set Computer (CISC) with a Von Neumann architecture, sharing a common address space for program and data.
Key features of the MC908QC16CDSE include the enhanced M68HC08 central processor unit, 16KB (16K x 8) of flash program memory supporting in-circuit reprogramming, and a compact 20-TSSOP footprint that minimizes board area in space-constrained automotive body-electronics modules. The part is lead-free (Pb-free) per the manufacturer datasheet, easing RoHS-driven transitions in legacy designs.
Architecturally, the HC08 core executes the HC08 instruction set with an object-code superset relationship to the earlier HC05 family, enabling straightforward code migration from legacy HC05 platforms. The QC16 variant belongs to the HC08Q family, which targets low-cost, high-performance applications such as mirrors, climate control, wiper control, lighting, window lift, sunroof, appliances, control systems, home and industrial security systems, and motion control.
Typical applications include automotive body modules (window lift, wiper, lighting, sunroof), appliance control boards, and industrial or residential security systems, where a small pin count, flash memory for field updates, and 5V noise immunity are decisive.
A key design consideration is supply selection: the part supports both 3.3V and 5V operation, so verify that external peripherals meet the logic levels of the chosen supply and that timing parameters are re-checked at the actual bus frequency used.
This page synthesizes verified distributor pricing, drop-in family alternatives, and practical design notes that go beyond the manufacturer datasheet.
直接替換替代品，適用於 MC908QC16CDSE — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC908QC16CDSE （相同外形與佔位） — 差異在於 Package, Program Memory Size, RAM Size, Number of I/O, Core Processor.
MC908QC16MDSE
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MC908QC16MDTE
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MC908QC16MDRE
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MC908QC8CDSE
✅ 直接替換聯絡詢價
查看資料表 →MC908QY8CDTE
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MC908QL3CDWE
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MC908QC16CDSE 最大額定值與電氣特性
| Core Processor | HC08 |
| Core Size | 8-bit |
| Architecture | CISC, Von Neumann (M68HC08 Family) |
| 最大時脈頻率 | 8 MHz |
| Flash Memory | 16KB (16K x 8) |
| 供應電壓 | 3.3 V / 5 V |
| 封裝 | 20-TSSOP (0.173 in, 4.40 mm width) |
| 安裝類型 | Surface Mount |
| Packaging | Rail |
| 腳位數 | 20 |
| Processor Series | HC08QC |
| 資料匯流排寬度 | 8 bit |
| RoHS 狀態 | Pb-free (lead-free) |
| Program Memory Type | FLASH |
| Manufacturer Family | HC08Q Family (M68HC08) |
| Application Segments | Automotive body electronics, appliances, security, motion control |
MC908QC16CDSE 20-tssop (0.173 in, 4.40 mm width) 腳位配置指南
MC908QC16CDSE（20-tssop (0.173 in, 4.40 mm width) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MC908QC16CDSE.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC908QC16CDSE 適用於 6 應用s: Automotive Wiper Control, Window Lift Modules, Interior and Exterior Lighting Control, Climate Control (HVAC) Panels, Sunroof Position Control, Home and Industrial Security Systems.
Automotive Wiper Control
The MC908QC16CDSE fits automotive wiper-control modules because its 16KB flash accommodates interval-wipe scheduling, speed-dependent logic, and fault diagnostics, while the 8MHz HC08 core easily services the timing loops such modules require. The controller reads stalk-switch inputs, drives the wiper motor relay or H-bridge, and supervises stall detection entirely within its on-chip timers, so external logic stays minimal on the 20-pin TSSOP footprint. Its dual 3.3V/5V supply support matches classic 5V automotive sensor rails, and flash memory allows firmware updates at the module level without changing hardware. Because wiper control is a safety-relevant function, the deterministic single-cycle instruction timing of the HC08 CISC core simplifies watchdog and diagnostic verification compared with software-timer-heavy alternatives.
推薦
Window Lift Modules
In door-mounted window-lift modules, the MC908QC16CDSE provides the 16KB flash needed for anti-pinch (object-sensing) algorithms, hall-sensor or ripple-count position tracking, and one-touch up/down state machines. The 20-pin TSSOP keeps the PCB small enough for the constrained door-module housing, while 5V operation gives noise-robust inputs against motor brush transients. The HC08 core executes the ripple-counting and current-profiling loops deterministically, and flash reprogramming supports end-of-line calibration data storage in the same 16KB array. Designers should pair the MCU with a protected automotive power IC and clamping on motor-sense inputs; the module-level benefit of this part is a proven, low-cost control platform already validated across many legacy body-electronics programs.
推薦
Interior and Exterior Lighting Control
Lighting modules - from interior dimming to exterior indicator control - leverage the MC908QC16CDSE's on-chip timers for PWM dimming and the 16KB flash for stored brightness curves, soft-start ramps, and thermal-derating logic. The 8MHz HC08 bus delivers sufficient resolution for lamp PWM frequencies above visible flicker thresholds, and the 20-TSSOP package suits the compact lamp-driver boards typical in automotive and appliance fixtures. Dual 3.3V/5V support eases integration with both legacy 5V switches and newer 3.3V LIN-capable companions. Flash programmability means one hardware SKU can store region-specific brightness or blink-rate calibrations. The deterministic interrupt latency of the HC08 core keeps PWM jitter low, which matters for camera-visible exterior lamps in modern vehicles.
推薦
Climate Control (HVAC) Panels
Automotive and appliance HVAC control panels use the MC908QC16CDSE to scan button/keypad matrices, decode rotary positions, drive stepper or DC blend-door actuators, and manage LED annunciators, all within its 20-pin budget and 16KB flash. The 8MHz HC08 core comfortably runs the polling state machines and actuator timing, while flash storage holds per-model calibration tables for temperature-to-door-position mapping. The 5V operating mode interfaces directly with legacy automotive potentiometer feedback sensors without level shifting. Its small TSSOP footprint suits the thin PCBs used behind instrument-panel fascia. Because climate panels run continuously, the HC08's low-power wait/stop modes help cut standby current when the system is off but still monitoring the ignition or wake line.
推薦
Sunroof Position Control
Sunroof modules demand precise position tracking, obstruction detection, and tilt/slide state sequencing, which the MC908QC16CDSE implements using its timers, 16KB flash, and deterministic HC08 core. Position is derived from Hall or ripple counts processed in the control loop, while the anti-trap algorithm uses current signatures stored as calibration data in flash. The 20-pin TSSOP meets the tight packaging above the headliner, and the Pb-free finish satisfies current automotive compliance requirements. The part's dual-voltage operation also supports hybrid architectures mixing legacy 5V sensors with 3.3V LIN or CAN transceiver companions. A recommended practice is reserving a flash sector for learned end-stops so the module re-teaches position limits after battery disconnect without a service visit.
推薦
Home and Industrial Security Systems
Security control panels and sensor nodes benefit from the MC908QC16CDSE's combination of flash memory, small footprint, and 5V noise immunity in electrically harsh environments. Typical roles include zone-input scanning, siren driver sequencing, keypad decoding, and dialer or communicator interfacing, all executing comfortably on the 8MHz HC08 core with 16KB of code space for encryption-light protocols and event logs. Industrial control systems use the same profile for motion-control sequencing and simple PID loops. Flash reprogramming enables field updates of alarm logic without hardware change, an important lifecycle advantage for installed-base products. In security designs, use the HC08's stop mode with an external wake source to minimize standby drain on the backup battery while retaining instantaneous wake response.
推薦
推薦產品摘要
工程參考資料，適用於 MC908QC16CDSE — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MC908QC16MDSE | MC908QC8CDSE | MC908QY8CDTE | MC908QL3CDWE |
|---|---|---|---|---|---|
| Package | 20-TSSOP | 20-TSSOP - same | 20-TSSOP - same | 20-TSSOP - same | 20-pin HC08 package - verify |
| Brand | NXP Semiconductors (Freescale legacy) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Architecture | HC08 8-bit CISC | HC08 8-bit CISC | HC08 8-bit CISC | HC08 8-bit CISC | HC08 8-bit CISC |
主要差異化特點
- Full 16KB flash in a 20-pin package (對比MC908QC8CDSE)
- Dual 3.3V/5V supply operation (對比MC908QL3CDWE)
- Pb-free finish for RoHS-era continuity (對比Legacy non-Pb-free HC08 grades)
設計說明
The MC908QC16CDSE accepts both 3.3V and 5V rails, but HC08 family AC timing (bus frequency limits, flash programming specs) is guaranteed per the datasheet electrical tables at the specific supply used. Estimated practical guidance: at 3.3V, verify the maximum bus clock you intend to run is still within the low-voltage specification range before fixing the oscillator design. Decouple VDD with a 0.1uF ceramic capacitor placed within a few millimeters of the pin, plus a 4.7-10uF bulk capacitor at the module supply entry for automotive load-dump transients.
When substituting within the HC08QC16 family (e.g., CDSE to MDSE/MDTE/MDRE variants), the suffix letters encode memory programming technology and temperature/grade options, not just packaging. Confirm that your in-circuit flash programming routine and monitor-ROM entry conditions match the substituted variant, and re-verify the operating temperature range if the module is automotive under-hood or under-body mounted. Mixing mask-ROM and flash suffixes on one production line without re-validating the programming step is a common field-failure source.
The 20-TSSOP (4.40mm width) has a 0.65mm pin pitch - use a proper TSSOP-20 land pattern and inspect with magnification for solder bridging, particularly in wave-selective or hand-rework processes. Keep the reset line short and add a pull-up (10kOhm typical) with optional 0.1uF capacitor to improve power-on reset behavior in noisy automotive environments where supply ramps are slow. Route oscillator traces away from motor-drive and relay traces typical of wiper/window-lift boards, and provide a solid ground plane under the MCU.
合規資訊
Datasheet headline states 'PB-FREE' (lead-free). Distributor listings indicate RoHS compliance. REACH, halogen-free, AEC-Q100 qualification, and conflict-minerals declarations were not present in verified data; request NXP product compliance certificates for documented confirmation.
