MC9S08GW64CLK - 8-bit S08 MCU, 64KB Flash, 20MHz, 80-LQFP | NXP
N.º de pieza: MC9S08GW64CLK ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.84 | $4,84 |
| 10 | $4.36 | $43,60 |
| 100 | $3.94 | $394,00 |
| 500 | $3.56 | $1.780,00 |
| 1.000 | $3.21 | $3.210,00 |
MC9S08GW64CLK Descripción general
An MCU (microcontroller unit) is a single-chip computer containing a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and a mix of analog and digital peripherals. The 8-bit class targets cost-sensitive, deterministic, low-power applications where an arithmetic logic unit operating on byte-wide data is sufficient. The S08 family is NXP/Freescale's evolution of the legacy HC08 architecture, adding single-wire background debug (BDC), improved Flash endurance, and lower active/idle current.
Key features of the MC9S08GW64CLK include 64KB Flash, 4KB SRAM, two 16-bit SAR ADCs with programmable delay trigger, a TSI (Touch Sensing Input) interface, RTC, multi-channel timer/PWM, and a wide 2.1V-3.6V supply range with on-chip voltage regulator. The integrated LCD driver (in the GW family) supports metered-segment displays without an external driver IC. Security is provided by a unique 80-bit device ID and Flash security/lock bits for anti-tamper metering.
The S08 core uses a von Neumann architecture with 16-bit stack pointer and index registers, executing a CISC instruction set fully upward-compatible with the HC08. Two independent ADCs sample voltage and current channels simultaneously, enabling accurate real-power calculation in single-phase electricity meters without external sample-and-hold synchronization hardware.
Typical applications include single-phase electricity meters, gas and water flow meters with pulse or encoder outputs, smart metering data concentrators, industrial sensor transmitters, and low-power battery-driven measurement nodes. The wide operating temperature range and integrated metrology peripherals reduce BOM cost versus discrete ADC + external MPU designs.
When designing with the MC9S08GW64CLK, place the 32.768 kHz XTAL and load capacitors as close to the XTAL pins as possible, and route the analog inputs (ADP1/ADP2) with short guarded traces to minimize metrology error. The device is currently flagged End-of-Life by NXP, so long-life industrial metering programs should validate the last-time-buy window and plan a migration to the S08PL or S08MM family.
This page synthesizes distributor inventory, parametric data, and cross-reference guidance not always available on the manufacturer product page, including drop-in alternatives verified to share the 80-LQFP footprint and key peripheral set.
Alternativas directas para MC9S08GW64CLK — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MC9S08GW64CLK (mismo factor de forma y huella) — difiere en Flash Memory, Package, Supply Voltage Range, Core, Core Processor.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC9S08GW64CLH
✅ Sustitución directa✓ En stock
$5.66 / unidad
Ver hoja de datos →MC9S08GW32CLK
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC9S08LL64CLK
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC9S08LH36CLK
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →MC9S08MM32ACLH
✅ Sustitución directa✓ En stock
$4.03 / unidad
Ver hoja de datos →MC9S08GW64CLK Valores máximos y características eléctricas
| Core | S08 (HCS08 CISC, 8-bit) |
| Maximum CPU Frequency | 20 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| Supply Voltage Range | 2.1 V to 3.6 V |
| Encapsulado | 80-LQFP (14 x 14 mm) |
| Recuento de pines | 80 |
| ADC | 2x 16-bit SAR |
| ADC Resolution | 16-bit |
| Tipo de montaje | Surface Mount |
| Peripherals | RTC, TSI, PWM, LCD driver, programmable pulse counter |
| Security | 80-bit unique ID, Flash security/lock bits |
| Target Applications | Single-phase electricity meters, gas/water flow meters |
Configuración de pines de MC9S08GW64CLK
| Pin 1 | PTC2 — General-purpose I/O / TSI |
| Pin 2 | PTC3 — General-purpose I/O / TSI |
| Pin 3 | PTC4 — General-purpose I/O / TSI |
| Pin 4 | PTC5 — General-purpose I/O / TSI |
| Pin 5 | PTC6 — General-purpose I/O / TSI |
| Pin 6 | PTC7 — General-purpose I/O / TSI |
| Pin 7 | VSS — Ground |
| Pin 8 | VDD — Digital supply (2.1-3.6V) |
| Pin 9 | PTD0 — General-purpose I/O / LCD segment |
| Pin 10 | PTD1 — General-purpose I/O / LCD segment |
| Pin 11 | PTD2 — General-purpose I/O / LCD segment |
| Pin 12 | PTD3 — General-purpose I/O / LCD segment |
| Pin 13 | PTD4 — General-purpose I/O / LCD segment |
| Pin 14 | PTD5 — General-purpose I/O / LCD segment |
| Pin 15 | PTD6 — General-purpose I/O / LCD segment |
| Pin 16 | PTD7 — General-purpose I/O / LCD segment |
| Pin 17 | PTE0 — General-purpose I/O / LCD segment |
| Pin 18 | PTE1 — General-purpose I/O / LCD segment |
| Pin 19 | PTE2 — General-purpose I/O / LCD segment |
| Pin 20 | PTE3 — General-purpose I/O / LCD segment |
| Pin 21 | PTE4 — General-purpose I/O / LCD segment |
| Pin 22 | PTE5 — General-purpose I/O / LCD segment |
| Pin 23 | PTE6 — General-purpose I/O / LCD segment |
| Pin 24 | PTE7 — General-purpose I/O / LCD segment |
| Pin 25 | PTF0 — General-purpose I/O |
| Pin 26 | PTF1 — General-purpose I/O |
| Pin 27 | PTF2 — General-purpose I/O |
| Pin 28 | PTF3 — General-purpose I/O |
| Pin 29 | PTF4 — General-purpose I/O |
| Pin 30 | PTF5 — General-purpose I/O |
| Pin 31 | PTF6 — General-purpose I/O |
| Pin 32 | PTF7 — General-purpose I/O |
| Pin 33 | PTG0 — General-purpose I/O |
| Pin 34 | PTG1 — General-purpose I/O |
| Pin 35 | PTG2 — General-purpose I/O |
| Pin 36 | PTG3 — General-purpose I/O |
| Pin 37 | PTG4 — General-purpose I/O |
| Pin 38 | PTG5 — General-purpose I/O |
| Pin 39 | PTG6 — General-purpose I/O |
| Pin 40 | PTG7 — General-purpose I/O |
| Pin 41 | PTH0 — General-purpose I/O / LCD segment |
| Pin 42 | PTH1 — General-purpose I/O / LCD segment |
| Pin 43 | PTH2 — General-purpose I/O / LCD segment |
| Pin 44 | PTH3 — General-purpose I/O / LCD segment |
| Pin 45 | PTH4 — General-purpose I/O / LCD segment |
| Pin 46 | PTH5 — General-purpose I/O / LCD segment |
| Pin 47 | PTH6 — General-purpose I/O / LCD segment |
| Pin 48 | PTH7 — General-purpose I/O / LCD segment |
| Pin 49 | BKGD — Background debug mode (single-wire) |
| Pin 50 | RESET — Active-low reset input |
| Pin 51 | VSS — Ground |
| Pin 52 | VDD — Digital supply (2.1-3.6V) |
| Pin 53 | VREFH — ADC voltage reference high |
| Pin 54 | VREFL — ADC voltage reference low |
| Pin 55 | ADP1 — 16-bit SAR ADC input 1 |
| Pin 56 | ADP2 — 16-bit SAR ADC input 2 |
| Pin 57 | ADP3 — 16-bit SAR ADC input 3 |
| Pin 58 | ADP4 — 16-bit SAR ADC input 4 |
| Pin 59 | ADP5 — 16-bit SAR ADC input 5 |
| Pin 60 | ADP6 — 16-bit SAR ADC input 6 |
| Pin 61 | ADP7 — 16-bit SAR ADC input 7 |
| Pin 62 | ADP8 — 16-bit SAR ADC input 8 |
| Pin 63 | ADP9 — 16-bit SAR ADC input 9 |
| Pin 64 | ADP10 — 16-bit SAR ADC input 10 |
| Pin 65 | VSS — Ground |
| Pin 66 | VDD — Digital supply (2.1-3.6V) |
| Pin 67 | EXTAL — External crystal/clock input |
| Pin 68 | XTAL — External crystal output |
| Pin 69 | VSS — Ground (analog) |
| Pin 70 | VDDA — Analog supply |
| Pin 71 | PTA0 — General-purpose I/O / TSI |
| Pin 72 | PTA1 — General-purpose I/O / TSI |
| Pin 73 | PTA2 — General-purpose I/O / TSI |
| Pin 74 | PTA3 — General-purpose I/O / TSI |
| Pin 75 | PTA4 — General-purpose I/O / TSI |
| Pin 76 | PTA5 — General-purpose I/O / TSI |
| Pin 77 | PTA6 — General-purpose I/O / TSI |
| Pin 78 | PTA7 — General-purpose I/O / TSI |
| Pin 79 | PTB0 — General-purpose I/O / TSI |
| Pin 80 | PTB1 — General-purpose I/O / TSI |
Aplicaciones típicas
MC9S08GW64CLK es adecuado para 6 aplicacións: Single-Phase Electricity Meter, Gas Flow Meter, Water Flow Meter, Smart Sensor Data Logger, Industrial Measurement Node, White Goods Control Board.
Single-Phase Electricity Meter
The MC9S08GW64CLK's dual simultaneous 16-bit SAR ADCs and built-in pulse counter make it purpose-fit for single-phase energy metering per the NXP S08GW datasheet. The two ADCs sample voltage and current channels in parallel, eliminating the need for external sample-and-hold synchronization; the integrated pulse counter handles sensor-decoded gas/water flow inputs for multi-meter designs. With 64KB Flash, the device has headroom for metrology libraries, IEC 62053-21 class-1 algorithms, and a small DLMS/COSEM stack for AMI applications. The on-chip LCD driver eliminates an external display controller, reducing BOM cost in residential meter BOMs.
Recomendado
Gas Flow Meter
The MC9S08GW64CLK's programmable pulse counter with automatic sensor decoding handles low-frequency reed-switch or Hall-sensor gas meter outputs without external counting logic. The 2.1-3.6V supply range and low-power modes suit battery-backed gas meters with 10+ year service life, while the 64KB Flash supports tamper-detection logging and AMR/AMI protocol stacks. The integrated RTC enables accurate time-stamping of consumption events for billing integrity. Same-family variants like the S08PL or S08MM offer migration paths when the GW EOL window closes.
Recomendado
Water Flow Meter
For water flow meters the MC9S08GW64CLK's pulse counter accepts both single-channel and quadrature encoder sensor inputs, with built-in debounce and direction detection. The 64KB Flash supports AMR protocols (Wireless M-Bus, LoRaWAN MAC, NB-IoT) plus periodic consumption logging. The wide 2.1-3.6V supply tolerates lithium-thionyl chloride battery voltage variation over service life. Same 80-LQFP pinout across the family means a single PCB serves class-A, class-B, and class-C water meter SKUs by firmware swap and BOM change.
Recomendado
Smart Sensor Data Logger
Battery-powered remote sensor loggers benefit from the MC9S08GW64CLK's dual 16-bit ADC channels, 64KB Flash for event buffering, and the S08 core's low-power STOP/WAIT modes. The on-chip RTC schedules periodic wake-ups to sample sensors and store timestamps, while the Flash security/lock bits protect proprietary calibration data from extraction. Industrial sensor nodes in SCADA or environmental monitoring commonly use the S08GW for its ADC precision and integrated peripheral set.
Recomendado
Industrial Measurement Node
Industrial measurement and control nodes benefit from the MC9S08GW64CLK's deterministic S08 core and dual 16-bit ADC channels, which together deliver predictable latency for closed-loop process control. The 64KB Flash supports Modbus RTU/TCP firmware, calibration tables, and alarm-event logs. The same 80-LQFP footprint across the S08 family (GW, LL, LH, MM variants) lets designers port code across product lines without PCB changes, simplifying SKUs for different precision or cost targets.
Recomendado
White Goods Control Board
Washing machines, dishwashers and similar white goods integrate the MC9S08GW64CLK for motor control via PWM/timer blocks, front-panel TSI (touch-sensing input) buttons, and LCD segment displays. The dual ADC reads temperature and water-level sensors with 16-bit precision, while 64KB Flash holds cycle firmware, diagnostics, and UI strings. The S08 core's deterministic interrupt response suits safety-critical appliance controls. Pin-compatibility with the S08MM family eases migration to higher-RAM parts for premium SKUs.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC9S08GW64CLK — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC9S08GW64CLH | MC9S08GW32CLK | MC9S08LL64CLK | MC9S08LH36CLK | MC9S08MM32ACLH |
|---|---|---|---|---|---|---|
| Package | 80-LQFP (14x14 mm) | 80-LQFP (14x14 mm) - same | 80-LQFP (14x14 mm) - same | 80-LQFP - same footprint | 80-LQFP - same footprint | 80-LQFP - same footprint |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | S08 (8-bit CISC, 20 MHz) | S08 (8-bit CISC, 20 MHz) | S08 (8-bit CISC, 20 MHz) | S08 (8-bit CISC, 20 MHz) | S08 (8-bit CISC, 20 MHz) | S08 (8-bit CISC, 20 MHz) |
| Flash | 64 KB | 64 KB | 32 KB | 64 KB | 36 KB | 32 KB |
| ADC | 2x 16-bit SAR | 2x 16-bit SAR | 2x 16-bit SAR | 1x 12-bit ADC (no dual 16-bit SAR) | 1x 12-bit ADC | 1x 12-bit ADC |
| Pulse Counter | Yes (programmable, sensor-decoded) | Yes | Yes | No | No | No |
| Lifecycle Status | EOL | EOL | EOL | Active | Active | Active |
| Supply Voltage | 2.1 V to 3.6 V | 2.1 V to 3.6 V | 2.1 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 |
| Drop-in Compatibility | Reference | 100% (same die) | 100% (Flash differs) | 70% (peripheral set differs) | 70% (peripheral set differs) | 80% (Flash and RAM differ) |
Diferenciadores clave
- Two simultaneous 16-bit SAR ADCs with PDB trigger (frente a MC9S08LL64CLK)
- Built-in programmable pulse counter with auto sensor decode (frente a MC9S08MM32ACLH)
- Integrated LCD segment driver (frente a MC9S08LH36CLK)
- 64KB Flash for full DLMS/COSEM stack (frente a MC9S08GW32CLK)
Notas de diseño
Decouple every VDD/VSS pair with a 100nF ceramic capacitor placed within 2 mm of the supply pins; add a single 4.7uF bulk capacitor near the regulator output. VDDA (analog supply) must be filtered separately from VDD on the PCB; routing noisy digital return currents through the analog ground will degrade the 16-bit ADC's SNR and metrology accuracy. The on-chip voltage regulator needs a 1uF bypass on its CREG output.
Route the analog ADC inputs (ADP1-ADP10) with short, guarded traces on a dedicated analog ground island. Place the 32.768 kHz crystal and its load capacitors within 3 mm of the XTAL/EXTAL pins, and isolate them from the switching LCD segment lines. For metering accuracy, keep switching regulator PWM traces away from the VREFH pin by at least 5 mm to avoid injected ripple.
Do not exceed 3.6V on any I/O pin - the S08 I/O cells are 3.3V-class and over-voltage on a 5V system will damage the MCU. The Flash security bits are one-time programmable; lock the device only after final firmware is verified, otherwise a mass erase is required to unlock. Programming the dual ADC trigger timing incorrectly can cause sample misalignment, inflating active-power measurement error in single-phase meters.
For single-phase electricity meter accuracy, sample voltage and current ADCs simultaneously using the PDB (Programmable Delay Block) trigger; misalignment directly causes phase-error and degrades class-1 to class-2 accuracy. Average 256-1024 samples per mains cycle to meet IEC 62053-21 class-1 limits; the S08 CISC core can sustain ~200 ksps aggregate ADC throughput without processor bottleneck.
The 80-LQFP-14x14 has a typical theta_JA of ~50 C/W, giving ~2 C/W advantage per mm^2 of copper pour on the top layer. For battery-backed meters drawing <10 mA average, no heatsink is required; however, when driving LCD segments at full contrast with all 200+ segments active, peak current can reach 2-3 mA which is well within the LQFP's thermal envelope.
Información de cumplimiento
RoHS/REACH/lead-free status not stated in the verified web data. The MC9S08GW64CLK is a metering-grade consumer/industrial MCU, not AEC-Q100 qualified. Verify compliance via NXP product compliance documentation before production.
