MCHC908QY2MDWER - 8-bit HC08 MCU 1.5KB Flash | NXP SOIC-16
MPN: MCHC908QY2MDWER ✓ Hoạt độngMCHC908QY2MDWER Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and a configurable set of peripheral interfaces. The 8-bit MCUs of the HC08 family occupy the lowest tier of the embedded-controller taxonomy: 8-bit core -> microcontroller -> embedded controller -> semiconductor IC. They remain popular where deterministic behaviour, low unit cost, and minimal active power outweigh the throughput advantages of 32-bit Cortex-M parts.
Key features include an HC08 CPU core, 1.5 KB Flash with in-system programmability via the built-in MON08 debug/monitor mode, a 10-bit successive-approximation ADC with multiple input channels, a 16-bit timer with pulse-width modulation capability, and a low-power STOP and WAIT modes that drop current consumption to single-digit microamps. The integrated brown-out reset and multiple I/O pins (with high-current sink/source capability on selected pins) allow direct drive of relays and LED arrays without external drivers.
The MCHC908QY2MDWER uses a 5 V-tolerant CMOS process with a two-stage pipeline HC08 core, executing most instructions in two bus cycles and delivering roughly 1 MIPS per MHz. Its monotonic 10-bit ADC achieves at least 10-bit accuracy over the full operating range, and the timer module supports input-capture, output-compare, and PWM modes for motor and lighting control. Internal protection includes a low-voltage inhibit (LVI) block, a computer-operating-properly (COP) watchdog timer, and an illegal-address reset to improve field reliability.
Typical applications include low-cost appliance controllers, battery chargers, remote keyless-entry fobs, simple sensor interfaces, LED drivers, and small motor-control boards. The 1.5 KB Flash is sized for the kind of compact, fixed-function firmware found in white goods, toys, and consumer accessories rather than complex protocol stacks.
When designing with this part, mind that the 1.5 KB Flash limits firmware size: use the C-optimizing HC08 toolchain, place constant tables in Flash, and leverage the monitor ROM for in-application reprogramming. Keep ADC inputs short and bypassed to preserve conversion accuracy, and ensure that the asynchronous COP watchdog is serviced frequently enough for your fault-recovery budget.
This page consolidates distributor pricing, drop-in alternatives, and practical engineering considerations not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho MCHC908QY2MDWER — 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 MCHC908QY2MDWER (cùng hình factor và footprint) — khác nhau ở Mounting Type, Package, Program Memory Size, Family, Manufacturer.
MC908QY2ACDWER
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MCHC908QY1MDWE
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC908QY4AMPE
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MC908QT2ACPE
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MC908QB4CPE
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →MCHC908QY2MDWER Tỷ lệ tối đa & tính chất điện
| Manufacturer | NXP Semiconductors (formerly Freescale Semiconductor) |
| Part Family | M68HC908QY/QT 8-bit MCU |
| Core | HC08 (8-bit) |
| Program Memory (Flash) | 1.5 KB |
| RAM | 128 bytes |
| ADC | 10-bit, multi-channel |
| Supply Voltage (Vcc/Vdd) | 2.7 V to 5.5 V |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (industrial) |
| Hộp | 16-pin SOIC (DWE), 7.5 mm body width |
| Kiểu lắp đặt | Surface Mount (SMT) |
| I/O Pins | 13 (general purpose, with shared ADC/Timer functions) |
| Timers | 1 x 16-bit TIM (input capture, output compare, PWM) |
| Watchdog | Yes (COP, computer-operating-properly) |
| Brown-out / LVI Reset | Yes (low-voltage inhibit) |
| In-System Programming | Yes (via MON08 / monitor ROM) |
| Internal Oscillator Support | Yes (external crystal/ceramic resonator modes) |
| Lead-Free / RoHS | Yes (RoHS3 compliant per datasheet) |
| Tray / Reel | Tape & Reel (ER suffix on manufacturer part number) |
Cấu hình chân MCHC908QY2MDWER
| Chân 1 | VREFH / VPP — ADC reference high / HV programming supply input (MON08 HVPP) |
| Chân 2 | PTA0 / ADC0 — Bidirectional I/O with analog ADC input channel 0 |
| Chân 3 | PTA1 / ADC1 / TCH0 — Bidirectional I/O, ADC channel 1, timer channel 0 (PWM/IC/OC) |
| Chân 4 | PTA2 / ADC2 / TCH1 — Bidirectional I/O, ADC channel 2, timer channel 1 (PWM/IC/OC) |
| Chân 5 | PTA3 / ADC3 / IRQ — Bidirectional I/O, ADC channel 3, external interrupt request input |
| Chân 6 | PTA4 / RST — Bidirectional I/O or external reset input (per configuration) |
| Chân 7 | PTA5 — Bidirectional I/O, high-current sink/source capable |
| Chân 8 | OSC1 — Crystal / resonator / external clock input |
| Chân 9 | OSC2 — Crystal / resonator feedback (or NC in external-clock mode) |
| Chân 10 | PTA6 — Bidirectional I/O, high-current sink/source capable |
| Chân 11 | PTA7 — Bidirectional I/O, high-current sink/source capable |
| Chân 12 | PTB0 / ADC4 / SDA — Bidirectional I/O, ADC channel 4, optional I2C-style SDA |
| Chân 13 | PTB1 / ADC5 / SCL — Bidirectional I/O, ADC channel 5, optional I2C-style SCL |
| Chân 14 | VSS — Ground reference |
| Chân 15 | NC — Not connected (per datasheet) |
| Chân 16 | VDD — Positive supply (2.7 V to 5.5 V) |
Ứng dụng tiêu biểu
MCHC908QY2MDWER phù hợp cho 6 Áp dụngs: Cost-Sensitive Appliance Control, Battery Charger / Smart-LED Driver, Remote Keyless Entry / Toy / Hobby Electronics, Sensor Interface / Data Acquisition Front-End, Small Motor Speed Control (BLDC / Fan), Industrial Sensor / LED-Indicator Module.
Cost-Sensitive Appliance Control
The MCHC908QY2MDWER is well matched to low-cost appliance controls because its HC08 core, 1.5 KB Flash and 128 bytes RAM cover the small, fixed-function firmware typical of microwave keypads, coffee makers and washing-machine user interfaces. The 2.7 V to 5.5 V supply allows direct tap from 3-cell battery packs or a 5 V USB rail, eliminating a regulator and shrinking the BOM. The 16-bit timer with PWM output drives small inductive loads, relays or solenoid valves directly through high-current GPIO pins, reducing external driver cost. Brown-out reset and the COP watchdog keep the appliance safe during line-voltage sag and brown-out events, which are common in regions with unstable mains. The DWE SOIC-16 package also passes SMT assembly lines that the legacy DIP variants cannot reach.
Được đề xuất
Battery Charger / Smart-LED Driver
In NiMH, lead-acid float or lithium-iron-phosphate chargers in the 5 V class, the MCHC908QY2MDWER handles charge-state tracking, taper detection and fault logging without a digital signal processor or an external op-amp front end. Its 10-bit ADC is sufficient for V and I monitoring with one or two current-sense amplifiers, and the 16-bit timer generates PWM up to several kHz for hysteretic and constant-current topologies. The 1.5 KB Flash leaves enough room for state-machine logic, LED breathing effects and temperature-compensation lookup tables, while 128 bytes of RAM holds a small history buffer. STOP and WAIT modes drop current into the single-digit microamp region, which is critical when a charger is plugged in continuously and standby energy matters. Compared with newer S9S08 parts, the QY2 trades away analog peripherals for a lower unit price that suits very high-volume chargers.
Được đề xuất
Remote Keyless Entry / Toy / Hobby Electronics
Remote keyless-entry fobs, IR/RF remote controls and battery-powered toys stress the MCU on three fronts: unit cost, standby current, and solder-joint survivability. The MCHC908QY2MDWER meets all three: the HC08 core is inexpensive, STOP mode draws very low current so a single CR2032 coin cell lasts a year or more, and the 16-pin SOIC body is rugged enough for hand-solder rework when prototypes arrive by mail. The 10-bit ADC reads potentiometer-based thumbwheels and battery-voltage sense for low-battery warning LEDs, while the timer block generates 38 kHz carrier for IR TX. Compared to a CPLD or 32-bit Cortex-M0+, this part shaves 30 to 70 percent off the BOM cost on a 25 to 50-cent class remote.
Được đề xuất
Sensor Interface / Data Acquisition Front-End
When paired with an analog sensor bridge (load cell, thermopile, PIR), the MCHC908QY2MDWER runs low-rate acquisition, linearisation, threshold detection and one-wire or UART reporting. The 10-bit ADC delivers adequate resolution for general-purpose thermistor, photodiode and PIR front-ends, and the digital-IO bus runs either an I2C-compatible slave protocol or a simple UART. With 1.5 KB Flash enough to host a small finite-state machine plus lookup tables for linearisation, designers can replace a dedicated sensor ASIC with a flexible MCU-only implementation that adapts to multiple product variants from one firmware base. Brown-out reset protects the Flash image during supply collapse from a battery, and the small SOIC-16 body keeps the front-end PCB smaller than 20 mm by 30 mm.
Được đề xuất
Small Motor Speed Control (BLDC / Fan)
For small fans, 5 V pumps and toy-grade brushed DC motors, the MCHC908QY2MDWER delivers elementary closed-loop control using the on-chip 10-bit ADC for back-EMF sensing or current shunt feedback and the 16-bit timer for PWM commutation. Firmware in 1.5 KB of Flash is enough to implement a fixed speed PI loop, soft-start ramps, and stall detection on a single MCU, removing the need for a dedicated motor-driver logic device. Brown-out (LVI) and COP recovery keep the motor safe during supply glitches, which is critical when the motor shares a supply with a load that also drives inductive kickbacks. Industrial temperature grading (-40 C to +125 C) supports underhood or long-life consumer-fan deployments.
Được đề xuất
Industrial Sensor / LED-Indicator Module
Compact industrial sensor modules and stack-light LED indicators usually need 5 V tolerance, long-term availability, and the ability to handle a noisy 24 V supply through a small DC-DC converter. The MCHC908QY2MDWER pairs with a 5 V LDO for the MCU and uses the timer PWM to drive indicator LED strings or to create path-light gradients. The 1.5 KB Flash plus 128 bytes RAM holds fault codes and blink patterns for stack lights, plus an RS-485 or UART-side state machine via the GPIO. Compared to a discrete 555/4017 LED driver chain, this MCU cuts part count and adds programmability (different blink patterns per SKU) without exceeding a dollar-level BOM cost target.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCHC908QY2MDWER — 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 | MC908QY2ACDWER | MCHC908QY1MDWE | MC908QY4AMPE | MC908QT2ACPE | MC908QB4CPE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors (Freescale) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | SOIC-16 (DWE) | SOIC-16 (DWE) - same footprint | SOIC-16 (DWE) - same footprint | SOIC-16 (DWE) - same footprint | DIP-8 - smaller pin-count | DIP-8 - smaller pin-count |
| Core | HC08 (8-bit) | HC08 (8-bit) | HC08 (8-bit) | HC08 (8-bit) | HC08 (8-bit) | HC08 (8-bit) |
| Flash Memory | 1.5 KB | 1.5 KB | 1.0 KB | 4 KB | 1.5 KB class | 1.5 KB class |
| RAM | 128 bytes | 128 bytes | 64 bytes | 128 bytes | 128 bytes | 128 bytes |
| ADC | 10-bit, multi-channel | 10-bit, multi-channel | 10-bit, multi-channel | 10-bit, multi-channel | Reduced channel count | 4-channel |
| 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 |
| Watchdog / LVI Reset | Yes (COP + LVI) | Yes (COP + LVI) | Yes (COP + LVI) | Yes (COP + LVI) | Yes (COP + LVI) | Yes (COP + LVI) |
Bảo phân biệt quan trọng
- Smallest NXP HC08 with the full QY2 peripheral mix in SOIC-16 DWE (vsMC908QT2ACPE)
- 1.5 KB Flash is sufficient for typical state-machine firmware (vsMCHC908QY1MDWE)
- NXP-authorised long-term manufacturing through Rochester Electronics (vsMC9S08QG4CFFE)
Ghi chú thiết kế
Estimated: at 5 V supply, full peripheral active, and 8 MHz internal bus, the HC08 core plus peripherals will draw roughly 6 to 10 mA. STOP mode current drops to a few microamps, so designs that spend >90 percent of time dormant (sensor edge nodes, remote fobs) should software-fence STOP aggressively and only wake on IRQ or timer overflow. Place a 100 nF decoupling capacitor within 5 mm of VDD and a 1 microfarad bulk capacitor on the same rail per NXP hardware design guidelines for HC08 family MCUs.
Keep ADC traces away from the PWM timer-pad output to avoid coupled switching noise that corrupts conversions on adjacent analog pins. Use a 0.1 microfarad ceramic between VREFH and VSS, located within 3 mm of the pin, to stabilise ADC reference. Reserve a guard ring around the ADC input traces if you need < 1 LSB noise when reading millivolt-level sensor bridges. Verify final routing against the latest NXP SOIC-16 land-pattern recommendation (IPC-7351 SOIC127P690X160-16M).
When programming in-circuit via MON08, ensure the IRQ/TCLK pin is not pulled low by the application, or the background debug module will fail to handshake - it is the most common reason MON08 connect failures. With only 1.5 KB of Flash, do not include an oversized standard library; use the C compiler's `-Os` optimisation with `--gc-sections` to remove unused routines. Ensure that the COP watchdog refresh rate is faster than the longest task under all conditions, since an unrefreshed COP reset will look like a spurious restart and corrupt Flash if a write is in progress.
Estimated: at 5 V, 5 mA active and ambient 25 C, the SOIC-16 part dissipates approximately 25 mW, giving a junction rise of < 1 C - derating is not required. In STOP mode the dissipation drops to single-digit milliwatts. The industrial temperature grade (-40 C to +125 C) is the operating envelope, not a die-temperature spec; at 125 C ambient, expect higher leakage current in STOP and design wake-up timing margins accordingly.
OSC1 and OSC2 should be routed short and matched; surface-mount the crystal or ceramic resonator within 5 mm of the pins, and avoid running other high-current traces underneath the oscillator loop. For external-clock mode, drive OSC1 only and leave OSC2 floating for lowest noise. Place a 1 megohm resistor across OSC1-OSC2 in crystal mode to bias the internal oscillator and reduce start-up time, per the NXP reference design.
Thông tin tuân thủ
Per the distributor listing (ROHS3 compliant) and NXP product page; AEC-Q100 qualification does not apply to industrial-grade 908 QY/QT variants.
