MC908QC16CDSE - 8-bit HC08 MCU, 16KB Flash, 8MHz | NXP
料号： MC908QC16CDSE ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.26 | $2.26 |
| 10 | $2.12 | $21.20 |
| 100 | $1.95 | $195.00 |
| 500 | $1.78 | $890.00 |
| 1,000 | $1.65 | $1,650.00 |
MC908QC16CDSE 概述
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.
直接替换替代料： MC908QC16CDSE ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MC908QC16CDSE （相同外形与封装尺寸） ——差异在于 Package, Program Memory Size, RAM Size, Number of I/O, Core Processor.
快速对比工具——选择替代料号进行并排对比：
MC908QC16MDSE
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.78 / 个
查看数据手册 →MC908QC16MDTE
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.2 / 个
查看数据手册 →MC908QC16MDRE
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$24.53 / 个
查看数据手册 →MC908QC8CDSE
✅ 直接替换✓ 有现货
$3.65 / 个
查看数据手册 →MC908QY8CDTE
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.1 / 个
查看数据手册 →MC908QL3CDWE
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.2 / 个
查看数据手册 →MC908QC16CDSE 最大额定值与电气特性
| Core Processor | HC08 |
| Core Size | 8-bit |
| Architecture | CISC, Von Neumann (M68HC08 Family) |
| 最大时钟频率 | 8 MHz |
| Flash Memory | 16KB (16K x 8) |
| 电源电压 | 3.3 V / 5 V |
| 封装 | 20-TSSOP (0.173 in, 4.40 mm width) |
| 安装类型 | Surface Mount |
| Packaging | Rail |
| 引脚数量 | 20 |
| Processor Series | HC08QC |
| 数据总线宽度 | 8 bit |
| RoHS 状态 | 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) 引脚配置指南
MC908QC16CDSE（20-tssop (0.173 in, 4.40 mm width) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MC908QC16CDSE.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MC908QC16CDSE 适用于 6 应用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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： MC908QC16CDSE ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Full 16KB flash in a 20-pin package （对比 MC908QC8CDSE)
- Dual 3.3V/5V supply operation （对比 MC908QL3CDWE)
- Pb-free finish for RoHS-era continuity （对比 Legacy non-Pb-free HC08 grades)
设计说明
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.
合规信息
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.
