MC9S08GW32CLH - S08GW 8-bit MCU, 32KB Flash, 64-LQFP | NXP
N.º da peça: MC9S08GW32CLH ⚠ Última compra| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $7.85 | $7,85 |
| 10 | $7.2 | $72,00 |
| 100 | $6.4 | $640,00 |
| 500 | $5.75 | $2.875,00 |
| 1.000 | $5.1 | $5.100,00 |
MC9S08GW32CLH Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory (Flash), peripheral I/O, and interrupt logic onto one silicon die. Within the broader taxonomy, the MC9S08GW32CLH belongs to the hierarchy: 8-bit MCU -> microcontroller -> microprocessor -> integrated circuit -> semiconductor. The S08 core uses an enhanced Harvard architecture and runs the same instruction set as the legacy HC08, giving designers a stable, well-documented software platform with modern peripherals.
Key features include 32 KB (32K x 8) Flash program memory, two on-chip 16-bit SAR ADCs with hardware sequencer, an LCD driver controller suitable for multi-digit metrology displays, and a rich connectivity set including I2C, LINbus, SCI (UART) and SPI. The device includes PWM channels for switching transducers, an LCD controller, and a watchdog timer (WDT) for safety-critical metering functions.
The MC9S08GW combines a low-power S08 core with metrology-grade analog front ends - the two 16-bit SAR ADCs are differential and can pair with shunt resistors or current transformers for active and reactive energy measurement. The built-in pulse counter with automatic decoder enables direct interface to gas and water meter pulse outputs, while the LCD driver removes the need for an external display controller in cost-sensitive meter designs.
Typical applications include single-phase electric meters, gas flow meters, water flow meters, and other low-power instrumentation panels with LCD readouts. The 64-LQFP footprint also gives enough I/O for industrial sensor hubs and home energy displays.
When designing with this part, ensure the ADC reference and shunt resistor layout follow metrology PCB guidelines to keep measurement error below the 0.5% accuracy class. Provide a low-impedance ground plane under the analog supply pins to prevent switching noise from coupling into the ADC input.
This page synthesizes distributor pricing (DigiKey, Mouser, Octopart), NXP life-cycle data, drop-in pin-compatible alternatives within the S08GW family, and practical design notes beyond what the NXP product brief offers.
Alternativas drop-in para MC9S08GW32CLH — 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 MC9S08GW32CLH (mesmo formato e footprint) — diferindo em Peripherals, Program Memory Size, Connectivity, Core, Core Processor.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MC9S08MM32CLH
✅ Drop-In✓ Em estoque
$3.32 / unidade
Ver ficha técnica →MC9S08DV128CLH
✅ Drop-In✓ Em estoque
$4.42 / unidade
Ver ficha técnica →MC9S08DZ96CLH
✅ Drop-In✓ Em estoque
$6.21 / unidade
Ver ficha técnica →MC9S08LL36CLK
✅ Drop-In✓ Em estoque
$3.84 / unidade
Ver ficha técnica →S9S08DZ60F1CLH
✅ Drop-In✓ Em estoque
$5.95 / unidade
Ver ficha técnica →MC9S08GW32CLH Classificações máximas e características elétricas
| Core Processor | S08 (8-bit) |
| Core Size | 8-bit |
| Program Memory Size | 32 KB (32K x 8) FLASH |
| CPU Speed | 20 MHz |
| Encapsulamento | 64-LQFP (10x10 mm) |
| Tipo de montagem | Surface Mount |
| Faixa de temperatura de operação | -40C to +85C (TA) |
| ADCs | Two 16-bit SAR ADCs |
| Connectivity | I2C, LINbus, SCI (UART), SPI |
| Peripherals | LCD driver, PWM, WDT, programmable delay block |
| Series | S08GW |
| Status RoHS | Compliant (per DigiKey listing) |
Configuração de pinos do MC9S08GW32CLH
| Pino 1 | PTA0 — General-purpose I/O / ADC reference (per NXP datasheet) |
| Pino 2 | PTA1 — General-purpose I/O |
| Pino 3 | PTA2 — General-purpose I/O |
| Pino 4 | PTA3 — General-purpose I/O |
| Pino 5 | PTA4 — General-purpose I/O |
| Pino 6 | PTA5 — General-purpose I/O |
| Pino 7 | PTA6 — General-purpose I/O |
| Pino 8 | PTA7 — General-purpose I/O |
| Pino 9 | PTB0 — General-purpose I/O / LCD segment |
| Pino 10 | PTB1 — General-purpose I/O / LCD segment |
| Pino 11 | PTB2 — General-purpose I/O / LCD segment |
| Pino 12 | PTB3 — General-purpose I/O / LCD segment |
| Pino 13 | PTB4 — General-purpose I/O / LCD segment |
| Pino 14 | PTB5 — General-purpose I/O / LCD segment |
| Pino 15 | PTB6 — General-purpose I/O / LCD segment |
| Pino 16 | PTB7 — General-purpose I/O / LCD segment |
| Pino 17 | PTC0 — General-purpose I/O |
| Pino 18 | PTC1 — General-purpose I/O |
| Pino 19 | PTC2 — General-purpose I/O |
| Pino 20 | PTC3 — General-purpose I/O |
| Pino 21 | PTC4 — General-purpose I/O |
| Pino 22 | PTC5 — General-purpose I/O |
| Pino 23 | PTC6 — General-purpose I/O |
| Pino 24 | PTC7 — General-purpose I/O |
| Pino 25 | PTD0 — General-purpose I/O |
| Pino 26 | PTD1 — General-purpose I/O |
| Pino 27 | PTD2 — General-purpose I/O |
| Pino 28 | PTD3 — General-purpose I/O |
| Pino 29 | PTD4 — General-purpose I/O |
| Pino 30 | PTD5 — General-purpose I/O |
| Pino 31 | PTD6 — General-purpose I/O |
| Pino 32 | PTD7 — General-purpose I/O |
| Pino 33 | PTE0 — General-purpose I/O / TxD1 |
| Pino 34 | PTE1 — General-purpose I/O / RxD1 |
| Pino 35 | PTE2 — General-purpose I/O / SDA |
| Pino 36 | PTE3 — General-purpose I/O / SCL |
| Pino 37 | PTE4 — General-purpose I/O / MOSI |
| Pino 38 | PTE5 — General-purpose I/O / MISO |
| Pino 39 | PTE6 — General-purpose I/O / SPSCK |
| Pino 40 | PTE7 — General-purpose I/O / SS |
| Pino 41 | PTF0 — General-purpose I/O |
| Pino 42 | PTF1 — General-purpose I/O |
| Pino 43 | PTF2 — General-purpose I/O |
| Pino 44 | PTF3 — General-purpose I/O |
| Pino 45 | PTF4 — General-purpose I/O |
| Pino 46 | PTF5 — General-purpose I/O |
| Pino 47 | PTF6 — General-purpose I/O |
| Pino 48 | PTF7 — General-purpose I/O |
| Pino 49 | PTG0 — General-purpose I/O / LCD backplane |
| Pino 50 | PTG1 — General-purpose I/O / LCD backplane |
| Pino 51 | PTG2 — General-purpose I/O / LCD backplane |
| Pino 52 | PTG3 — General-purpose I/O / LCD backplane |
| Pino 53 | PTG4 — General-purpose I/O |
| Pino 54 | PTG5 — General-purpose I/O |
| Pino 55 | PTG6 — General-purpose I/O |
| Pino 56 | PTG7 — General-purpose I/O |
| Pino 57 | VDD — Positive supply voltage |
| Pino 58 | VDDA — Analog supply voltage |
| Pino 59 | VREFH — ADC reference high |
| Pino 60 | VREFL — ADC reference low |
| Pino 61 | VSS — Digital ground |
| Pino 62 | VSSA — Analog ground |
| Pino 63 | RESET — Active-low reset input |
| Pino 64 | BKGD — Background debug mode / programming |
Aplicações típicas
MC9S08GW32CLH é adequado para 6 aplicaçãos: Single-Phase Electric Meter, Gas Flow Meter, Water Flow Meter, Home Energy Display (HED) / In-Home Display, Industrial Sensor / Pulse-Counter Hub, Sub-Metering / Multi-Tenant Energy Monitor.
Single-Phase Electric Meter
The MC9S08GW32CLH is purpose-built for single-phase electric metering per the NXP product brief. Its two on-chip 16-bit SAR ADCs simultaneously sample current and voltage channels with metrology-class accuracy, while the integrated pulse counter and programmable delay block compute active/reactive energy. The 32 KB Flash houses metrology firmware and calibration coefficients, the SCI/UART feeds an external communications module, and the LCD driver displays kWh readouts. Compared with general-purpose MCUs, the S08GW removes the need for an external metering AFE.
Recomendado
Gas Flow Meter
For diaphragm gas meters, the MC9S08GW32CLH's automatic sensor-decoding pulse counter reads magnetic or optoelectronic reed outputs without an external decoder. The S08 core runs at 20 MHz with low-power modes suited to battery-powered meters that must last 10+ years on a single cell. LINbus connectivity allows the meter to report data to a concentrator in AMI networks. The integrated LCD driver and PWM channels remove the need for separate display or valve-control ICs, shrinking BOM count.
Recomendado
Water Flow Meter
Water flow meters using single-jet or multi-jet pulse sensors pair well with the MC9S08GW32CLH because the hardware pulse counter handles debouncing and direction detection. One 16-bit SAR ADC can monitor battery voltage or temperature compensation, while the second remains available for tamper detection inputs. The 64-LQFP provides ample I/O for valve control, optical port, and wireless module interface. Designers reuse the NXP metrology library across gas, water, and electric SKUs to shorten firmware qualification cycles.
Recomendado
Home Energy Display (HED) / In-Home Display
The MC9S08GW32CLH drives small HED panels that show real-time consumption read from a smart meter over RF or PLC. The integrated LCD controller handles the dot-matrix or 7-segment display without an external driver, the S08 core runs the user-interface firmware in 32 KB Flash, and SPI provides a fast link to the wireless transceiver. Low quiescent current combined with selectable S08 WAIT and STOP modes keeps idle power low so the HED can be line- or battery-powered.
Recomendado
Industrial Sensor / Pulse-Counter Hub
Beyond metering, the MC9S08GW32CLH's programmable delay block, dual 16-bit SAR ADCs, and pulse counter make it suitable for industrial sensor hubs that aggregate pulse and analog signals from flow, pressure, or level transducers. The PWM channels drive excitation sources or alarm outputs, while I2C and SPI connect to digital sensors or non-volatile memory. The -40C to +85C industrial temperature range supports outdoor panel installations without a heater.
Recomendado
Sub-Metering / Multi-Tenant Energy Monitor
In multi-tenant sub-meter panels, each channel needs its own ADC sampling pair. The MC9S08GW32CLH's two 16-bit SAR ADCs handle paired CT/shunt inputs with synchronized conversion, eliminating the need for an external AFE per tenant. LINbus enables daisy-chain networking between units, and the S08 core logs consumption events between host polls. This reduces the per-channel bill of materials versus a discrete AFE + MCU architecture in mid-density deployments.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC9S08GW32CLH — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC9S08MM32CLH | MC9S08DV128CLH | MC9S08DZ96CLH | MC9S08LL36CLK | S9S08DZ60F1CLH |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same |
| Core | S08 8-bit | S08 8-bit | S08 8-bit | S08 8-bit | S08 8-bit | S08 8-bit |
| Flash Memory | 32 KB | 32 KB (same) | 128 KB (+300%) | 96 KB (+200%) | 36 KB (+12%) | 60 KB (+88%) |
| CPU Speed | 20 MHz | 20 MHz class | 20 MHz class | 20 MHz class | 20 MHz class | 20 MHz class |
| ADC Channels | Two 16-bit SAR | S08MM ADC set | S08DV ADC set | S08DZ ADC set | S08LL ADC set | S08DZ ADC set |
| Connectivity | I2C, LIN, SCI, SPI | I2C, SPI, SCI | I2C, SPI, SCI, CAN | I2C, SPI, SCI, CAN | I2C, SPI, SCI | I2C, SPI, SCI, CAN |
| Lifecycle Status | Last Time Buy | Check NXP | Check NXP | Check NXP | Check NXP | Check NXP |
Principais diferenciais
- Two on-chip 16-bit SAR ADCs with programmable delay block (vs MC9S08MM32CLH)
- Integrated LCD driver for meter displays (vs MC9S08DZ96CLH)
- On-chip pulse counter with sensor decoder (vs MC9S08LL36CLK)
Notas de projeto
Estimated: at VDD = 5V with the CPU active at 20 MHz and both ADCs sampling, the S08GW family typically draws 10 to 15 mA. In STOP3 mode with RTC running, quiescent drops below 1 uA. Place a 100 nF decoupling capacitor directly on each VDD/VSS pair and a bulk 4.7 uF on VDDA to keep ADC reference noise below 1 LSB. A ferrite bead between VDD and VDDA reduces digital switching noise coupling into the analog supply.
Route the shunt-resistor differential pair (current channel) and the voltage-divider pair to the two SAR ADC inputs as matched-length, symmetric traces with a solid ground pour on layer 2. Keep the VREFH/VREFL traces short and free of digital crossings. The 64-LQFP 0.5 mm pitch requires 0.25 mm traces with 0.2 mm spacing - use a 4-layer stack-up if the meter enclosure is dense, to maintain ground integrity around the analog section.
Do not enable the on-chip LCD charge pump without first verifying the VDD level - operation below the LCD pump minimum disables display bias. Calibration coefficients in Flash must be stored with a checksum and re-loaded into RAM at boot; failure to do so causes metering drift after brown-out. Do not drive RESET low during Flash programming or the BDM (BKGD) sequence will lock - always follow the NXP security-byte procedure before mass production.
The two 16-bit SAR ADCs achieve full performance only when both reference pins (VREFH, VREFL) are bypassed with a 100 nF NPO/C0G ceramic and a 10 uF tantalum or polymer cap. Avoid routing the LIN or SCI lines near the ADC inputs - even a 50 mV switching-noise spike on VREFH can couple into the ADC count. Use the integrated programmable delay block to time the ADC sampling instant away from PWM edges and AC zero-crossings in the meter.
Informações de conformidade
RoHS compliance is per DigiKey listing. Reach and lead-free status derived from NXP product family conventions. Halogen-free status not stated in the verified web data. AEC-Q100 not applicable for this MPN - commercial/industrial grade only.