MC9S08GW32CLH - S08GW 8-bit MCU, 32KB Flash, 64-LQFP | NXP
MPN: MC9S08GW32CLH ⚠ Huling PagbiliMC9S08GW32CLH Ulas
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.
Mga alternatibo na pwedeng ilagay na MC9S08GW32CLH — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok MC9S08GW32CLH (parehas na form factor at footprint) — pagkakaiba sa Peripherals, Program Memory Size, Connectivity, Core, Core Processor.
MC9S08MM32CLH
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →MC9S08DV128CLH
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →MC9S08DZ96CLH
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →MC9S08LL36CLK
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →S9S08DZ60F1CLH
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →MC9S08GW32CLH Mga Pinakamataas na Rating at Electrical Characteristics
| Core Processor | S08 (8-bit) |
| Core Size | 8-bit |
| Program Memory Size | 32 KB (32K x 8) FLASH |
| CPU Speed | 20 MHz |
| Packhaging | 64-LQFP (10x10 mm) |
| Uri ng Pagpapasok | Surface Mount |
| Hanay ng Temperature na Operasyon | -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 |
| Tindminan RoHS | Compliant (per DigiKey listing) |
Pin Configuration ng MC9S08GW32CLH
| Pin 1 | PTA0 — General-purpose I/O / ADC reference (per NXP datasheet) |
| Pin 2 | PTA1 — General-purpose I/O |
| Pin 3 | PTA2 — General-purpose I/O |
| Pin 4 | PTA3 — General-purpose I/O |
| Pin 5 | PTA4 — General-purpose I/O |
| Pin 6 | PTA5 — General-purpose I/O |
| Pin 7 | PTA6 — General-purpose I/O |
| Pin 8 | PTA7 — General-purpose I/O |
| Pin 9 | PTB0 — General-purpose I/O / LCD segment |
| Pin 10 | PTB1 — General-purpose I/O / LCD segment |
| Pin 11 | PTB2 — General-purpose I/O / LCD segment |
| Pin 12 | PTB3 — General-purpose I/O / LCD segment |
| Pin 13 | PTB4 — General-purpose I/O / LCD segment |
| Pin 14 | PTB5 — General-purpose I/O / LCD segment |
| Pin 15 | PTB6 — General-purpose I/O / LCD segment |
| Pin 16 | PTB7 — General-purpose I/O / LCD segment |
| Pin 17 | PTC0 — General-purpose I/O |
| Pin 18 | PTC1 — General-purpose I/O |
| Pin 19 | PTC2 — General-purpose I/O |
| Pin 20 | PTC3 — General-purpose I/O |
| Pin 21 | PTC4 — General-purpose I/O |
| Pin 22 | PTC5 — General-purpose I/O |
| Pin 23 | PTC6 — General-purpose I/O |
| Pin 24 | PTC7 — General-purpose I/O |
| Pin 25 | PTD0 — General-purpose I/O |
| Pin 26 | PTD1 — General-purpose I/O |
| Pin 27 | PTD2 — General-purpose I/O |
| Pin 28 | PTD3 — General-purpose I/O |
| Pin 29 | PTD4 — General-purpose I/O |
| Pin 30 | PTD5 — General-purpose I/O |
| Pin 31 | PTD6 — General-purpose I/O |
| Pin 32 | PTD7 — General-purpose I/O |
| Pin 33 | PTE0 — General-purpose I/O / TxD1 |
| Pin 34 | PTE1 — General-purpose I/O / RxD1 |
| Pin 35 | PTE2 — General-purpose I/O / SDA |
| Pin 36 | PTE3 — General-purpose I/O / SCL |
| Pin 37 | PTE4 — General-purpose I/O / MOSI |
| Pin 38 | PTE5 — General-purpose I/O / MISO |
| Pin 39 | PTE6 — General-purpose I/O / SPSCK |
| Pin 40 | PTE7 — General-purpose I/O / SS |
| Pin 41 | PTF0 — General-purpose I/O |
| Pin 42 | PTF1 — General-purpose I/O |
| Pin 43 | PTF2 — General-purpose I/O |
| Pin 44 | PTF3 — General-purpose I/O |
| Pin 45 | PTF4 — General-purpose I/O |
| Pin 46 | PTF5 — General-purpose I/O |
| Pin 47 | PTF6 — General-purpose I/O |
| Pin 48 | PTF7 — General-purpose I/O |
| Pin 49 | PTG0 — General-purpose I/O / LCD backplane |
| Pin 50 | PTG1 — General-purpose I/O / LCD backplane |
| Pin 51 | PTG2 — General-purpose I/O / LCD backplane |
| Pin 52 | PTG3 — General-purpose I/O / LCD backplane |
| Pin 53 | PTG4 — General-purpose I/O |
| Pin 54 | PTG5 — General-purpose I/O |
| Pin 55 | PTG6 — General-purpose I/O |
| Pin 56 | PTG7 — General-purpose I/O |
| Pin 57 | VDD — Positive supply voltage |
| Pin 58 | VDDA — Analog supply voltage |
| Pin 59 | VREFH — ADC reference high |
| Pin 60 | VREFL — ADC reference low |
| Pin 61 | VSS — Digital ground |
| Pin 62 | VSSA — Analog ground |
| Pin 63 | RESET — Active-low reset input |
| Pin 64 | BKGD — Background debug mode / programming |
Tipikal na mga Gamit
MC9S08GW32CLH ay nararapat para sa 6 aplikasyons: 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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for MC9S08GW32CLH — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | 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 |
Pangunahing mga Pagkakaiba
- Two on-chip 16-bit SAR ADCs with programmable delay block (kumpara saMC9S08MM32CLH)
- Integrated LCD driver for meter displays (kumpara saMC9S08DZ96CLH)
- On-chip pulse counter with sensor decoder (kumpara saMC9S08LL36CLK)
Talaan ng Disenyo
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.
Impormasyon ng Pagsunod sa Kautusan
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.