MC9S08GW32CLH - S08GW 8-bit MCU, 32KB Flash, 64-LQFP | NXP
MPN: MC9S08GW32CLH ⚠ Lần mua cuốiMC9S08GW32CLH Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MC9S08GW32CLH — 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 MC9S08GW32CLH (cùng hình factor và footprint) — khác nhau ở Peripherals, Program Memory Size, Connectivity, Core, Core Processor.
MC9S08MM32CLH
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S08DV128CLH
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S08DZ96CLH
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S08LL36CLK
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →S9S08DZ60F1CLH
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9S08GW32CLH Tỷ lệ tối đa & tính chất điện
| Core Processor | S08 (8-bit) |
| Core Size | 8-bit |
| Program Memory Size | 32 KB (32K x 8) FLASH |
| CPU Speed | 20 MHz |
| Hộp | 64-LQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Khoảng nhiệt độ hoạt động | -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 |
| Trạng thái RoHS | Compliant (per DigiKey listing) |
Cấu hình chân MC9S08GW32CLH
| Chân 1 | PTA0 — General-purpose I/O / ADC reference (per NXP datasheet) |
| Chân 2 | PTA1 — General-purpose I/O |
| Chân 3 | PTA2 — General-purpose I/O |
| Chân 4 | PTA3 — General-purpose I/O |
| Chân 5 | PTA4 — General-purpose I/O |
| Chân 6 | PTA5 — General-purpose I/O |
| Chân 7 | PTA6 — General-purpose I/O |
| Chân 8 | PTA7 — General-purpose I/O |
| Chân 9 | PTB0 — General-purpose I/O / LCD segment |
| Chân 10 | PTB1 — General-purpose I/O / LCD segment |
| Chân 11 | PTB2 — General-purpose I/O / LCD segment |
| Chân 12 | PTB3 — General-purpose I/O / LCD segment |
| Chân 13 | PTB4 — General-purpose I/O / LCD segment |
| Chân 14 | PTB5 — General-purpose I/O / LCD segment |
| Chân 15 | PTB6 — General-purpose I/O / LCD segment |
| Chân 16 | PTB7 — General-purpose I/O / LCD segment |
| Chân 17 | PTC0 — General-purpose I/O |
| Chân 18 | PTC1 — General-purpose I/O |
| Chân 19 | PTC2 — General-purpose I/O |
| Chân 20 | PTC3 — General-purpose I/O |
| Chân 21 | PTC4 — General-purpose I/O |
| Chân 22 | PTC5 — General-purpose I/O |
| Chân 23 | PTC6 — General-purpose I/O |
| Chân 24 | PTC7 — General-purpose I/O |
| Chân 25 | PTD0 — General-purpose I/O |
| Chân 26 | PTD1 — General-purpose I/O |
| Chân 27 | PTD2 — General-purpose I/O |
| Chân 28 | PTD3 — General-purpose I/O |
| Chân 29 | PTD4 — General-purpose I/O |
| Chân 30 | PTD5 — General-purpose I/O |
| Chân 31 | PTD6 — General-purpose I/O |
| Chân 32 | PTD7 — General-purpose I/O |
| Chân 33 | PTE0 — General-purpose I/O / TxD1 |
| Chân 34 | PTE1 — General-purpose I/O / RxD1 |
| Chân 35 | PTE2 — General-purpose I/O / SDA |
| Chân 36 | PTE3 — General-purpose I/O / SCL |
| Chân 37 | PTE4 — General-purpose I/O / MOSI |
| Chân 38 | PTE5 — General-purpose I/O / MISO |
| Chân 39 | PTE6 — General-purpose I/O / SPSCK |
| Chân 40 | PTE7 — General-purpose I/O / SS |
| Chân 41 | PTF0 — General-purpose I/O |
| Chân 42 | PTF1 — General-purpose I/O |
| Chân 43 | PTF2 — General-purpose I/O |
| Chân 44 | PTF3 — General-purpose I/O |
| Chân 45 | PTF4 — General-purpose I/O |
| Chân 46 | PTF5 — General-purpose I/O |
| Chân 47 | PTF6 — General-purpose I/O |
| Chân 48 | PTF7 — General-purpose I/O |
| Chân 49 | PTG0 — General-purpose I/O / LCD backplane |
| Chân 50 | PTG1 — General-purpose I/O / LCD backplane |
| Chân 51 | PTG2 — General-purpose I/O / LCD backplane |
| Chân 52 | PTG3 — General-purpose I/O / LCD backplane |
| Chân 53 | PTG4 — General-purpose I/O |
| Chân 54 | PTG5 — General-purpose I/O |
| Chân 55 | PTG6 — General-purpose I/O |
| Chân 56 | PTG7 — General-purpose I/O |
| Chân 57 | VDD — Positive supply voltage |
| Chân 58 | VDDA — Analog supply voltage |
| Chân 59 | VREFH — ADC reference high |
| Chân 60 | VREFL — ADC reference low |
| Chân 61 | VSS — Digital ground |
| Chân 62 | VSSA — Analog ground |
| Chân 63 | RESET — Active-low reset input |
| Chân 64 | BKGD — Background debug mode / programming |
Ứng dụng tiêu biểu
MC9S08GW32CLH phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9S08GW32CLH — 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 | 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 |
Bảo phân biệt quan trọng
- Two on-chip 16-bit SAR ADCs with programmable delay block (vsMC9S08MM32CLH)
- Integrated LCD driver for meter displays (vsMC9S08DZ96CLH)
- On-chip pulse counter with sensor decoder (vsMC9S08LL36CLK)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.