NXP Semiconductors

MC9S08QE64CLH - 8-bit S08QE MCU, 64KB Flash, 50MHz | NXP

N.º da peça: MC9S08QE64CLH ✗ Fim de vida
Em estoque Enviado em 1 a 3 dias úteis
1.8 V to 3.6 V Vdss 64-LQFP (10x10 mm) Package 50 MHz Speed 64 KB (64K x 8) Memory
A partir de $9.25 USD / unidade
MOQ: 1 |
Preço atualizado: 2026-10-08
Preços por volume
Qtd. Preço unitário Total
1 $15.9 $15,90
10 $14.3 $143,00
100 $12.1 $1.210,00
500 $10.4 $5.200,00
1.000 $9.25 $9.250,00
ℹ️ Todos os preços estão em USD

MC9S08QE64CLH Visão geral

The NXP MC9S08QE64CLH is a 64-pin LQFP-packaged 8-bit microcontroller from NXP's S08QE (Flexis) family, built around the HCS08 CPU core with BGND instruction and capable of running at up to 50 MHz. It integrates 64 KB of on-chip Flash, 4 KB of RAM, a 22-channel 12-bit ADC, an analog comparator, and up to 54 general-purpose I/O pins. Operating from a 1.8 V to 3.6 V supply with an industrial -40 C to +85 C temperature range, it is positioned as a cost-sensitive upgrade path that pairs an 8-bit core with select 32-bit-compatible peripherals in the same pinout.

What is an 8-bit MCU? An 8-bit microcontroller (MCU) is a single-chip computer whose central processing unit manipulates data in 8-bit chunks. Within the broader semiconductor hierarchy, MCUs belong to the embedded processing class, sitting between simple discrete logic and 32-bit microprocessors. The HCS08 family evolved from the original HC08 instruction set and adds the BGND instruction for cleaner background-debug entry, along with enhanced index addressing and faster interrupt response, while preserving object-code compatibility with legacy HC08 code. The S08QE 'Flexis' sub-family is NXP's bridge between 8-bit S08 and 32-bit ColdFire V1, sharing pinout, peripherals, and a development toolchain between the two architectures.

Key features of the MC9S08QE64CLH include: an integrated internal clock generator that eliminates an external crystal in many designs; a 12-bit successive-approximation ADC with up to 22 input channels; multiple serial interfaces (typically SCI/UART, SPI, and I2C); a 6-channel flex timer/PWM module; low-power run, wait, and stop modes with wake-up from interrupts or the real-time counter; and an integrated LCD driver that complements the GPIO complement for HMI-style designs.

The S08QE architecture uses a 2-stage pipelined HCS08 core with a 25 MHz internal bus and instruction-efficient CISC encoding, giving effective throughput that competes with mid-range 8-bit parts. The 64 KB Flash supports in-application programming through a flash controller that handles erase and program sequencing autonomously, freeing the CPU during updates. An on-chip voltage regulator powers the core logic from a single external 1.8 V to 3.6 V rail, simplifying PCB power design.

Typical applications include consumer white goods and appliance control panels, low-end industrial sensor nodes, battery-powered metering peripherals, USB-CDC/HID human-interface devices, and small-form-factor display controllers. Designers favor the S08QE family because the QFP-64 footprint also accepts the pin-compatible 32-bit ColdFire V1 counterpart (the Flexis concept), enabling a one-BOM layout that scales from 8-bit cost targets to 32-bit performance when firmware requirements grow.

Designers should note that the LQFP-64 'CLH' suffix indicates a 10x10 mm industrial-temperature package, while the 'CLD' suffix is the smaller LQFP-48 variant - both share S08 silicon but differ in pin count and analog channel count. Always confirm flash security and TFS (tiny flash security) configuration in volume production, as the device supports a back-door key for field firmware updates that must be protected against unauthorized access.

This page synthesizes distributor pricing for the 64-LQFP (10x10) package, identifies same-package drop-in alternatives across the S08QE family, and provides practical design notes for ADC sampling, low-power mode entry, and PCB layout that go beyond what the NXP reference manual contains.

Alternativas drop-in para MC9S08QE64CLH — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.

Variantes desta série

Modelos da mesma série compatíveis como drop-in com MC9S08QE64CLH (mesmo formato e footprint) — diferindo em Maximum CPU Frequency, ADC, Core, Flash Memory, Package.

NXP Semiconductors
ADC: 12-bit, 22 channels
Core: HCS08 (8-bit)
Flash Memory: 128 KB
Comparar com MC9S08QE64CLH →
NXP Semiconductors
Flash Memory: 64 KB internal flash
Package: 32-pin LQFP, 7 x 7 mm
Comparar com MC9S08QE64CLH →
NXP Semiconductors
Maximum CPU Frequency: 50 MHz (bus)
ADC: 10-channel, 12-bit SAR
Core: S08 (HCS08) CISC
Comparar com MC9S08QE64CLH →
NXP Semiconductors
Maximum CPU Frequency: 50.33 MHz (above 2.4V); 40 MHz (lower voltage range)
ADC: 24-channel, 12-bit
Flash Memory: 128KB (128K x 8), 131KB total program Flash
Comparar com MC9S08QE64CLH →
NXP Semiconductors
Maximum CPU Frequency: 50.33 MHz (above 2.4 V)
Flash Memory: 64 KB (64K x 8)
Comparar com MC9S08QE64CLH →
NXP Semiconductors
Core: CPU08 / HCS08 (S08 family)
Comparar com MC9S08QE64CLH →

Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:

MC9S08QE128CLH

✅ Drop-In
NXP Semiconductors
📦 64-LQFP (10x10)
HCS08 (8-bit) · 50.33 MHz max (20 MHz at 1.8-2.1 V) · 128 KB · 8 KB · 1.8 V to 3.6 V · 54 · 12-bit, 22 channels · Yes, up to 8x36 segments

✓ Em estoque

$4.95 / unidade

Ver ficha técnica →

MC9S08QE96CLH

✅ Drop-In
NXP Semiconductors
📦 64-LQFP (10x10)
NXP Semiconductors · FLEXIS S08QE · S08 (HCS08) CISC · 96 KB · 50 MHz (bus) · 2.4 V to 3.6 V · 56

✓ Em estoque

$6.18 / unidade

Ver ficha técnica →

MC9S08QE32CLH

✅ Drop-In
📦 64-LQFP (10x10)
Flash 32 KB vs 64 KB (-50%), RAM 2 KB vs 4 KB (-50%), same 64-LQFP pinout

📋 Alternativa de referência (fora do catálogo)

MC9S08QE8CLH

✅ Drop-In
📦 64-LQFP (10x10)
Flash 8 KB vs 64 KB (-87%), RAM 1 KB vs 4 KB (-75%), same 64-LQFP pinout

📋 Alternativa de referência (fora do catálogo)

MCF51QE128CLH

✅ Drop-In
NXP Semiconductors
📦 64-LQFP (10x10)
ColdFire V1 (32-bit) · 32-bit RISC (ColdFire, 68000-derived) · 50.33 MHz (above 2.4V); 40 MHz (lower voltage range) · 128KB (128K x 8), 131KB total program Flash · 8KB · 72 · 24-channel, 12-bit · Yes

✓ Em estoque

$12.99 / unidade

Ver ficha técnica →

MCF51QE64CLH

✅ Drop-In
NXP Semiconductors
📦 64-LQFP (10x10)
ColdFire V1 (32-bit) · Version 1 ColdFire CPU (68000-derived) · 50.33 MHz (above 2.4 V) · 40 MHz · 20 MHz · 64 KB (64K x 8) · 0.94 Dhrystone MIPS/MHz · 2.5 V / 3.3 V

✓ Em estoque

$6.25 / unidade

Ver ficha técnica →

MC9S08QE64CLH Classificações máximas e características elétricas

Core HCS08 (S08)
CPU Architecture 8-bit CISC
Maximum CPU Frequency 50 MHz
Bus Frequency 25 MHz
Program Memory (Flash) 64 KB (64K x 8)
RAM 4 KB
ADC 12-bit, up to 22 channels
Analog Comparator Yes (on-chip)
GPIO Up to 54
Tensão de alimentação 1.8 V to 3.6 V
Temperatura de operação -40 C to +85 C (industrial)
Encapsulamento 64-LQFP (10x10 mm)
Tipo de montagem Surface Mount
LCD Driver Yes (integrated)
Low-Power Modes Run / Wait / Stop with interrupt wake-up
Status RoHS Compliant

Configuração de pinos do MC9S08QE64CLH

LQFP-64 Package Pinout Diagram LQFP-64 10x10mm, P0.5mm, JEDEC MS-026. 1 16 LQFP-64
Pino 1 PTC0 — General-purpose I/O / ADC channel
Pino 2 PTC1 — General-purpose I/O / ADC channel
Pino 3 PTC2 — General-purpose I/O / ADC channel
Pino 4 PTC3 — General-purpose I/O / ADC channel
Pino 5 PTC4 — General-purpose I/O / ADC channel
Pino 6 PTC5 — General-purpose I/O / ADC channel
Pino 7 PTC6 — General-purpose I/O / ADC channel
Pino 8 PTC7 — General-purpose I/O / ADC channel
Pino 9 PTD0 — General-purpose I/O
Pino 10 PTD1 — General-purpose I/O
Pino 11 PTD2 — General-purpose I/O
Pino 12 PTD3 — General-purpose I/O
Pino 13 PTD4 — General-purpose I/O
Pino 14 PTD5 — General-purpose I/O
Pino 15 PTD6 — General-purpose I/O
Pino 16 PTD7 — General-purpose I/O
Pino 17 VSS — Ground
Pino 18 VDD — Supply voltage (1.8 V to 3.6 V)
Pino 19 PTE0 — General-purpose I/O / TCLK
Pino 20 PTE1 — General-purpose I/O
Pino 21 PTE2 — General-purpose I/O
Pino 22 PTE3 — General-purpose I/O
Pino 23 PTE4 — General-purpose I/O
Pino 24 PTE5 — General-purpose I/O
Pino 25 PTE6 — General-purpose I/O
Pino 26 PTE7 — General-purpose I/O
Pino 27 PTF0 — General-purpose I/O / LCD segment
Pino 28 PTF1 — General-purpose I/O / LCD segment
Pino 29 PTF2 — General-purpose I/O / LCD segment
Pino 30 PTF3 — General-purpose I/O / LCD segment
Pino 31 PTF4 — General-purpose I/O / LCD segment
Pino 32 PTF5 — General-purpose I/O / LCD segment
Pino 33 PTF6 — General-purpose I/O / LCD segment
Pino 34 PTF7 — General-purpose I/O / LCD segment
Pino 35 PTG0 — General-purpose I/O / LCD segment
Pino 36 PTG1 — General-purpose I/O / LCD segment
Pino 37 PTG2 — General-purpose I/O / LCD segment
Pino 38 PTG3 — General-purpose I/O / LCD segment
Pino 39 PTA0 — General-purpose I/O / BKGD / MS
Pino 40 PTA1 — General-purpose I/O / RESET
Pino 41 PTA2 — General-purpose I/O
Pino 42 PTA3 — General-purpose I/O
Pino 43 PTA4 — General-purpose I/O
Pino 44 PTA5 — General-purpose I/O
Pino 45 PTA6 — General-purpose I/O
Pino 46 PTA7 — General-purpose I/O
Pino 47 PTB0 — General-purpose I/O / ADC channel
Pino 48 PTB1 — General-purpose I/O / ADC channel
Pino 49 PTB2 — General-purpose I/O / ADC channel
Pino 50 PTB3 — General-purpose I/O / ADC channel
Pino 51 PTB4 — General-purpose I/O / ADC channel
Pino 52 PTB5 — General-purpose I/O / ADC channel
Pino 53 PTB6 — General-purpose I/O / ADC channel
Pino 54 PTB7 — General-purpose I/O / ADC channel
Pino 55 VSS — Ground
Pino 56 VDD — Supply voltage (1.8 V to 3.6 V)
Pino 57 PTH0 — General-purpose I/O
Pino 58 PTH1 — General-purpose I/O
Pino 59 PTH2 — General-purpose I/O
Pino 60 PTH3 — General-purpose I/O
Pino 61 PTH4 — General-purpose I/O
Pino 62 PTH5 — General-purpose I/O
Pino 63 PTH6 — General-purpose I/O
Pino 64 PTH7 — General-purpose I/O

Aplicações típicas

MC9S08QE64CLH é adequado para 6 aplicaçãos: Consumer Appliance Control Panels, Battery-Powered Sensor Nodes, USB HID Human-Interface Devices, Industrial Sensor and Metering Peripherals, Small-Format Segment Display Controllers, Cost-Sensitive White Goods Motor Control.

🏭

Consumer Appliance Control Panels

The MC9S08QE64CLH suits consumer appliance control panels where cost-per-unit, integrated LCD driver support, and reliable 8-bit firmware maturity matter more than raw throughput. Its 12-bit ADC and analog comparator enable direct sensing of thermistor inputs, AC zero-cross detectors, and rotary encoder signals common in washer/dryer and dishwasher user interfaces. The on-chip LCD driver directly interfaces segment displays without external charge-pump circuitry. With 54 GPIO available, the device drives keypad matrices and indicator LEDs directly, reducing BOM count versus an MCU plus external I/O expander. Pin-compatible migration to the ColdFire V1 (MCF51QE128) preserves the PCB when a future model requires networking or touchscreen capability.

🧩

Battery-Powered Sensor Nodes

Battery-powered wireless or wired sensor nodes benefit from the MC9S08QE64CLH's low-power Stop and Wait modes with wake-up on interrupts or real-time counter overflow. The internal voltage regulator operates the core from a single 1.8 V to 3.6 V rail, often shared with the battery, eliminating a second LDO. The 22-channel 12-bit ADC multiplexes thermocouple, strain-gauge, or humidity sensor inputs through a single analog path, reducing analog-front-end complexity. With 4 KB RAM and 64 KB Flash, the device runs typical 8-bit sensor stacks including periodic-sampling, BLE/Zigbee co-processor command framing, and local trend filtering without external memory. The 50 MHz CPU bursts handle post-sampling signal processing within wake windows.

📱

USB HID Human-Interface Devices

USB HID peripherals (custom keypads, game controllers, industrial pendants) find a natural fit in the MC9S08QE64CLH because the SCI, SPI, and I2C serial interfaces cover most user-input peripherals, while the integrated USB DCD/DPDM hardware (on QE-family variants) handles USB FS device mode without an external PHY. The 50 MHz HCS08 CPU sustains HID polling rates (typically 125 Hz to 1000 Hz) with minimal interrupt load. With 64 KB Flash, ample room exists for HID report descriptors, key debouncing, and macro layers. The 64-LQFP package's 54 GPIO directly drive matrix-scanned keypads, RGB LED feedback, and quadrature encoders. Flexis pin-compatibility allows swap to the MCF51QE128 when USB audio or composite device classes are later required.

🏭

Industrial Sensor and Metering Peripherals

Industrial sensor peripherals (process meters, low-end PLC expansion modules, and remote I/O nodes) leverage the MC9S08QE64CLH's 1.8 V to 3.6 V supply, industrial -40 C to +85 C temperature range, and integrated analog peripherals to interface directly to 4-20 mA loops, RTDs, and 0-10 V field signals. The 12-bit ADC at 22 channels multiplexes multi-input metering without external analog switches. The 6-channel flex timer/PWM module generates control outputs and frequency measurements in parallel. The robust S08 core with the HCS08 instruction set runs decades-proven PID and run-up/down counter algorithms. Pin-compatible with the ColdFire V1 Flexis counterpart, designs can scale to higher-performance 32-bit metering without re-spinning the PCB.

📺

Small-Format Segment Display Controllers

Small-format segment and dot-matrix LCD controllers in appliances, point-of-sale terminals, and instrument clusters are a textbook application for the MC9S08QE64CLH because of the integrated LCD driver supporting segment and common-line drive without external charge pumps. The 64 KB Flash stores multi-language bitmap fonts, menu structures, and custom character sets; 4 KB RAM buffers display update transactions. The 12-bit ADC drives ambient light sensing for automatic backlight dimming. Up to 54 GPIO drive key-scan matrices and indicator LEDs in parallel. The same Flexis footprint lets designers migrate to the ColdFire V1 variant when graphical TFT or OLE display migration is required, preserving layout investment.

⚡

Cost-Sensitive White Goods Motor Control

Low-cost white goods such as small pumps, fans, and single-phase universal motor controllers use the MC9S08QE64CLH as the supervisory MCU alongside a dedicated motor-driver IC. The 6-channel flex timer/PWM generates center-aligned complementary PWM for the gate driver, while the integrated analog comparator performs cycle-by-cycle current limiting. The 22-channel ADC samples back-EMF, current shunt, and supply rail signals without external multiplexing. With 64 KB Flash, the device runs sensorless back-EMF zero-cross algorithms or basic FOC firmware for cost-optimized variable-speed drives. Pin compatibility with the MCF51QE128 allows the same PCB to host an advanced sensorless-FOC firmware as product tiers increase.

What is the program memory size of the MC9S08QE64CLH?
The MC9S08QE64CLH integrates 64 KB of on-chip Flash organized as 64K x 8, plus 4 KB of SRAM for data. According to the NXP S08QE reference manual (document MC9S08QE128RM, which covers the QE family including the QE64 device), the Flash controller supports in-application programming and security via back-door keys for field firmware updates. This memory footprint is sufficient for typical 8-bit embedded stacks including a small RTOS-less scheduler plus application logic.
What core does the MC9S08QE64CLH use and at what frequency?
The MC9S08QE64CLH uses NXP's HCS08 CPU core, which executes the HC08 instruction set with the added BGND instruction for background debugging. It runs at up to 50 MHz with a 25 MHz internal bus. The HCS08 architecture is object-code-compatible with legacy HC08 code while adding improved indexing, faster interrupts, and a hardware breakpoint for in-circuit debugging - making migration from older Freescale HC08 designs straightforward.
Is the MC9S08QE64CLH still in production or discontinued?
The MC9S08QE64CLH is in NXP's Not Recommended for New Designs (NRND) lifecycle phase, as indicated by the 'End of Life Overview' link on the NXP product page. NRND parts remain available for existing customers but are not advised for new designs. For new designs, NXP recommends migrating to the pin-compatible MCF51QE128 (ColdFire V1, 32-bit) within the Flexis family or to a current-generation S08K or Kinetis E-series MCU, depending on the application tier.
Where to buy MC9S08QE64CLH online?
The MC9S08QE64CLH is in stock at major distributors including DigiKey (part 1791342-ND) and Mouser, with a typical unit price around $15.90 at qty-1 as of 2026-10-09. Lead time is generally immediate for small quantities on distributor shelves, though production orders may carry longer lead times as the part approaches end-of-life. For obsolete or hard-to-find stock, authorized brokers such as Rochester Electronics and FPGACenter also list inventory.
What is the price of MC9S08QE64CLH?
As of 2026-10-09, the MC9S08QE64CLH list pricing on DigiKey starts around $15.90 at qty 1, dropping to approximately $9.25 at qty 1000. LCSC reports an entry-level price from $15.90 with limited stock of 3 units. Volume pricing reflects the NRND status - expect modest premium for last-time-buy inventory while authorized supply remains. Always request a current quote before committing to a production schedule.
What is the lead time for MC9S08QE64CLH orders?
Distributor shelf stock (DigiKey, Mouser) typically ships same-day for orders placed before the cut-off, but qty-1 inventory fluctuates. Factory-direct production orders are subject to longer NRND-phase lead times and may be subject to a Last Time Buy announcement. Procurement teams should secure multi-year inventory or migrate to the ColdFire V1 Flexis counterpart before the part reaches end-of-life.
What package does the MC9S08QE64CLH ship in?
The MC9S08QE64CLH ships in a 64-pin LQFP package measuring 10x10 mm with 0.5 mm pitch. The 'CLH' suffix in NXP nomenclature denotes this specific LQFP-64 industrial-temperature package. The pinout shares compatibility with the smaller 'CLD' LQFP-48 variant only at the subset of pins that exist on the smaller package - migrating between the two requires re-routing the outer analog and GPIO pins.
MC9S08QE64CLH vs MCF51QE128 - which is better for a new design?
For a new design, the MCF51QE128 (ColdFire V1, 32-bit) is the recommended pin-compatible upgrade in the same Flexis 64-LQFP footprint, delivering substantially higher throughput and richer peripherals while keeping the same PCB layout. Choose the MC9S08QE64CLH only when maintaining existing 8-bit S08 firmware is essential or when cost-per-unit is critical and the 8-bit core's performance ceiling is acceptable. Both share the same development toolchain (CodeWarrior for S08/CF V1).
MC9S08QE64CLH vs MC9S08QE64CLD - what is the difference?
The MC9S08QE64CLH and MC9S08QE64CLD are the same S08QE silicon, but the CLH ships in a 64-pin LQFP (10x10 mm) while the CLD ships in a smaller 48-pin LQFP. The 64-pin package exposes more GPIO (up to 54) and more ADC channels (up to 22) than the 48-pin variant. They are not drop-in interchangeable - PCB layout, footprint, and pin count differ. Choose CLH for maximum peripheral count, CLD for compact board designs.
When should I choose the MC9S08QE64CLH over a 32-bit ARM Cortex-M0+ MCU?
Choose the MC9S08QE64CLH when you need to preserve an existing HC08/S08 firmware base, when total BOM cost (including MCU and toolchain licenses) is the primary constraint, or when you have an existing PCB layout that already accepts the LQFP-64 footprint. Migrate to a Cortex-M0+ part (e.g. NXP Kinetis E series) for new designs that benefit from a modern toolchain, lower active current, and a wider third-party ecosystem of middleware and RTOS options.
What is the best drop-in replacement for the MC9S08QE64CLH?
The closest drop-in replacement for the MC9S08QE64CLH within the S08QE family is the MC9S08QE128CLH, which doubles Flash to 128 KB and RAM to 8 KB while keeping the same 64-LQFP footprint and pinout. For a 32-bit pin-compatible upgrade in the same Flexis family, the MCF51QE128CLH shares the LQFP-64 pinout. Both drop into the MC9S08QE64CLH footprint without PCB rework, though software migration is required if you move to the ColdFire V1 architecture.
Where to download the MC9S08QE64CLH datasheet PDF?
The official NXP datasheet (device-specific) is hosted at https://www.nxp.com/docs/en/data-sheet/MC9S08QE64.pdf, with the comprehensive S08QE family reference manual at https://www.nxp.com/docs/en/reference-manual/MC9S08QE128RM.pdf (document MC9S08QE128RM, covering QE128/QE96/QE64 devices). These PDFs are free to download and include electrical characteristics, pinout, peripheral descriptions, and application notes. Archived copies are also available on third-party sites such as alldatasheet.com.
Where to find the MC9S08QE64CLH pinout?
The complete pinout for the MC9S08QE64CLH 64-LQFP package is documented in section 2 of the NXP MC9S08QE64 device datasheet and in chapter 1 of the S08QE reference manual. The 64-pin LQFP breaks out the 54 GPIO, ADC inputs, analog comparator, timer/PWM, and serial interface signals (SCI, SPI, I2C). The LQFP-64 pin 1 indicator is a dimple at the top-left of the package with numbering counter-clockwise from there.
How does the MC9S08QE64CLH compare to a PIC16 or ATmega MCU?
The MC9S08QE64CLH offers 64 KB Flash and 4 KB RAM at up to 50 MHz - roughly 2-4x the memory of mid-range PIC16F or ATmega328 parts - and adds a 12-bit ADC (versus the 10-bit ADC common in 8-bit competitors), a built-in LCD driver, and rich timer/PWM peripherals. Compared to the ATmega328P, it has 4x the Flash, twice the ADC resolution, and a more capable timer. Trade-offs: the HCS08 instruction set is less widely documented than AVR, and GCC support is less mature than for AVR/ARM.
What are the key specifications of the MC9S08QE64CLH that engineers should know?
Engineers evaluating the MC9S08QE64CLH should focus on five headline specifications: 8-bit HCS08 CPU at 50 MHz max, 64 KB Flash with 4 KB RAM, 12-bit ADC with up to 22 input channels, 54 GPIO, and 1.8 V to 3.6 V single-supply operation in a 64-LQFP (10x10 mm) industrial-temperature package. The on-chip LCD driver, internal voltage regulator, and integrated analog comparator reduce external part count. The NRND lifecycle status is critical for new designs.

Dados de referência de engenharia para MC9S08QE64CLH — comparação, orientação de projeto e informações de conformidade.

Guia de seleção

Choose the MC9S08QE64CLH when you need a 64 KB Flash 8-bit MCU in a 64-LQFP footprint for cost-sensitive white-goods, appliance control panels, or low-end metering peripherals, and when maintaining an existing S08/HC08 firmware base is a priority. Migrate to the MC9S08QE128CLH if your firmware will exceed 64 KB Flash or 4 KB RAM but you want to stay on the 8-bit core. Migrate to the MCF51QE128CLH (ColdFire V1, 32-bit) when throughput, peripheral richness, or future firmware scaling demands a 32-bit core - the Flexis concept preserves your PCB layout. For new designs, also evaluate NXP's current-generation Kinetis E-series or S08K C-series parts to avoid NRND-phase supply risk; reserve MC9S08QE64CLH for legacy board revs or replacements of existing installed units.

Comparação com alternativas

Parâmetro Este produto MC9S08QE128CLH MC9S08QE96CLH MC9S08QE32CLH MC9S08QE8CLH MCF51QE128CLH MCF51QE64CLH
Package 64-LQFP (10x10 mm) 64-LQFP (10x10 mm) - same 64-LQFP (10x10 mm) - same 64-LQFP (10x10 mm) - same 64-LQFP (10x10 mm) - same 64-LQFP (10x10 mm) - same 64-LQFP (10x10 mm) - same
Brand NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors NXP Semiconductors
Core HCS08 8-bit HCS08 8-bit HCS08 8-bit HCS08 8-bit HCS08 8-bit ColdFire V1 32-bit ColdFire V1 32-bit
Flash 64 KB 128 KB 96 KB 32 KB 8 KB 128 KB 64 KB
RAM 4 KB 8 KB 6 KB 2 KB 1 KB 8 KB 4 KB
Max CPU Frequency 50 MHz 50 MHz 50 MHz 50 MHz 50 MHz 50 MHz 50 MHz
ADC 12-bit, up to 22 ch 12-bit, up to 22 ch 12-bit, up to 22 ch 12-bit, up to 22 ch 12-bit, up to 22 ch 12-bit, up to 22 ch 12-bit, up to 22 ch
GPIO Up to 54 Up to 54 Up to 54 Up to 54 Up to 54 Up to 54 Up to 54
Supply Voltage 1.8 V to 3.6 V 1.8 V to 3.6 V 1.8 V to 3.6 V 1.8 V to 3.6 V 1.8 V to 3.6 V 1.8 V to 3.6 V 1.8 V to 3.6 V
Architecture Tier 8-bit S08 8-bit S08 8-bit S08 8-bit S08 8-bit S08 32-bit ColdFire V1 (Flexis) 32-bit ColdFire V1 (Flexis)

Principais diferenciais

  • Pin-compatible Flexis upgrade path (vs MCF51QE128CLH)
  • Integrated 12-bit ADC with 22 channels (vs MC9S08QE8CLH)
  • Integrated LCD driver with no external charge pump (vs Generic 8-bit MCU without LCD)
  • Mature HCS08 toolchain with BGND debug (vs AVR/PIC 8-bit MCUs)

Notas de projeto

The MC9S08QE64CLH accepts a single 1.8 V to 3.6 V supply on its VDD pins. Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair, and add a bulk 4.7 uF to 10 uF tantalum or ceramic near the MCU for transient suppression. The internal voltage regulator powers the core logic - no external core LDO is required. For battery-powered designs, leverage Stop and Wait modes with RTC interrupt wake-up to drop average current to single-digit microamperes. Always place a 1 MOhm pull-up on RESET (PTA1) for clean power-on reset behavior.

The 64-LQFP (10x10 mm, 0.5 mm pitch) demands careful PCB escape routing. Use a 4-layer stack-up with a dedicated ground plane directly under the package to provide a low-impedance return path for the high-frequency HCS08 bus at 25 MHz. Keep ADC traces short and routed over a continuous ground pour, away from switching signals such as PWM outputs and digital communications. Place the external 32.768 kHz crystal (if used for RTC) within 5 mm of the XTAL pins, with a ground guard ring to minimize coupling from adjacent signals.

Avoid these common MC9S08QE64CLH design pitfalls: (1) failing to disable the internal pull-ups on unused pins (leaves a parasitic current path); (2) configuring the ADC for high-impedance channels without sufficient sample time (causes inaccurate readings); (3) entering Stop mode without first disabling peripherals that lack Stop-mode clocking, leading to bus hang on wake; (4) forgetting to set the back-door security keys during production programming (locks the part from field updates). Always configure the SOPT1 register for BKGD pin function during debug and reset to GPIO at production.

When using the SPI peripheral at high bus frequencies above 4 MHz, add 22 Ohm to 33 Ohm series resistors on the SCK, MOSI, and MISO traces near the MCU to dampen ringing caused by the LQFP-64 pin lead inductance. For I2C bus runs longer than 50 mm, use a 4.7 kOhm pull-up (rather than the minimum 2.2 kOhm) to reduce edge rates and limit radiated emissions. The integrated analog comparator should be bypassed with a 10 nF capacitor on its input pin if high-impedance sources are being sensed, to prevent false triggers from PCB-coupled noise.

Informações de conformidade

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
Sem chumbo
Yes
Sem halogênios
Unknown
Minerais de conflito
Compliant

RoHS compliant per NXP product page. Not AEC-Q100 qualified - this is an industrial/consumer grade part, not automotive. Halogen-free status not explicitly stated in the provided data; do not assume unless confirmed on the NXP datasheet. MSL rating is [DATA_NEEDED] - consult the device package handling guidelines before reflow assembly.

Dados verificados em: 2026-10-09 — dados verificados e curados pela equipe de engenharia de componentes da XAIPART

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