My Inquiry
My Account
NXP Semiconductors S908GR8E0CDWE
- Part No.:
- S908GR8E0CDWE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
S908GR8E0CDWE.pdf
- Description:
- IC MCU 8BIT 7.5KB FLASH 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,308
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
S908GR8E0CDWE from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller featuring 8 KB flash memory, 512 B RAM, and integrated peripherals including ADC, SCI, SPI, TIM, and COP watchdog. It operates at up to 8 MHz CPU clock with internal PLL-based clock generation and supports low-power Wait/Stop modes. Used in cost-sensitive embedded control applications such as appliance motor control and industrial sensor interfaces.
For engineers reviewing the S908GR8E0CDWE datasheet, S908GR8E0CDWE pinout, S908GR8E0CDWE application, or S908GR8E0CDWE equivalent, key selection criteria include its 20-pin SOIC-20W package, 8-channel 10-bit ADC with 4 µs conversion time, CGM PLL lock time under 10 ms, and support for in-circuit programming via MONROM bootloader.
Technical Context
The S908GR8E0CDWE implements the HCS08 CPU core with 16-bit address space, indexed addressing mode, and 27-instruction set optimized for deterministic real-time control. Its Clock Generator Module (CGMC) integrates a crystal oscillator, PLL with programmable multiplier (×1–×32), and base clock selector enabling flexible system clock derivation from external crystals or internal RC sources.
Peripheral integration includes a 10-bit successive-approximation ADC with 8 input channels, two 16-bit timer modules (TIM1/TIM2) supporting input capture/output compare, and dual serial interfaces (SCI and SPI) with independent baud rate generators. All modules are managed through the System Integration Module (SIM) with centralized reset/interrupt control and low-voltage inhibit (LVI) protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 8-bit CISC core with 27 instructions, 16-bit address bus, and 1.25 MIPS/MHz performance |
| Flash Memory | 8 KB on-chip flash with 100k-cycle endurance and 10-year data retention at 85°C |
| RAM | 512 bytes of on-chip SRAM with automatic retention during Stop mode |
| ADC | 10-bit SAR ADC with 8 input channels, 4 µs conversion time, ±1 LSB INL/DNL |
| Max Operating Frequency | 8 MHz CPU clock derived from PLL output; supports crystal frequencies from 1–8 MHz |
| Low-Power Modes | Wait mode (CPU halted, peripherals active) and Stop mode (full system halt, 1 µA typical current) |
| I/O Pins | 16 general-purpose I/O pins with configurable pull-ups, interrupt-on-change, and keyboard scan capability |
Pinout & Package
Package: 20-pin SOIC (SOIC-20W), 0.300-inch body width, RoHS-compliant, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Primary digital supply (2.7–5.5 V); powers CPU, RAM, and most I/O ports |
| VSS | Ground | Digital ground reference for VDD-supplied circuitry |
| OSC1 / OSC2 | Clock input/output | Crystal oscillator terminals; support fundamental-mode quartz crystals (1–8 MHz) |
| RST | Reset input | Active-low external reset; also accepts internal POR/LVI/COP reset assertion |
| PTA0–PTA3 | Port A I/O | Keyboard interrupt-capable inputs (KBD0–KBD3) with internal pull-up enable |
| PTB0–PTB5 | Port B I/O | Analog input channels AD0–AD5 for ADC; configurable as digital I/O |
| PTD0–PTD6 | Port D I/O | Includes SS (SPI slave select), T2CH0 (TIM2 channel 0 input), and general-purpose I/O |
| PTE0 / PTE1 | Serial interface | TxD (transmit) and RxD (receive) for asynchronous SCI communication |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug monitor | MONROM bootloader enables in-system programming and debugging without external hardware |
| Computer Operating Properly (COP) | Configurable watchdog timer with timeout options from 2.1 ms to 1.3 s; resets on timeout or illegal opcode |
| Low-voltage inhibit (LVI) | Detects supply drop below 2.5 V (±0.1 V) and triggers reset before logic corruption occurs |
| Timebase Module (TBM) | Generates precise periodic interrupts (122 Hz to 20 kHz) using internal RC oscillator; no external components required |
| Break module | Hardware-assisted debug interrupt with address breakpoint registers for non-intrusive code inspection |
Applications
| Appliance Motor Control | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Embedded control of single-phase AC induction motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Real-time PWM generation, analog sensor feedback sampling (NTC, current sense), and fault detection via COP/LVI. Use Value: 8 KB flash accommodates field-upgradable motor algorithms; 10-bit ADC resolves temperature drift within ±1°C over 0–70°C range. |
Use Scenario: Signal conditioning and digital reporting of pressure, humidity, and ambient light in factory-floor sensors. IC Role / Device Role / Timing Role: ADC acquisition, SPI communication to host MCU, and low-power Stop mode during idle intervals. Use Value: 1 µA Stop mode current extends battery life in wireless sensor nodes; TBM provides accurate wake-up timing without external crystal. |
| Smart Power Outlet | Medical Diagnostic Instrument |
|
Use Scenario: Energy monitoring and relay control in UL-certified smart outlets with local decision logic. IC Role / Device Role / Timing Role: Isolated current/voltage sensing interface, zero-crossing detection, and relay driver timing control. Use Value: IRQ pin supports hardware-triggered zero-crossing capture; 16 I/O pins enable direct GPIO control of triac drivers and status LEDs. |
Use Scenario: Front-end signal acquisition and preprocessing in portable blood glucose meters and pulse oximeters. IC Role / Device Role / Timing Role: Low-noise analog front-end (VREFH/VREFL pins), calibrated ADC conversion, and secure firmware update via SCI. Use Value: Dedicated VDDAD/VSSAD power domain isolates analog section from digital noise; ±1 LSB linearity ensures clinical-grade measurement repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08GB60ACLH | Enhanced HCS08 core, 60 KB flash, 4 KB RAM, USB interface, 48-pin LQFP package | Requires PCB redesign; suited for USB-connected devices needing larger code space and higher I/O count | Select when upgrading from S908GR8E0CDWE for increased memory, USB connectivity, or more peripherals |
| KE02Z32VLC2 | Cortex-M0+ core, 32 KB flash, 4 KB RAM, 20-pin QFN, native CMSIS-DAP debug support | ARM ecosystem compatibility; lacks MONROM but gains modern toolchain and power efficiency | Choose for new designs requiring ARM software portability, lower active power, or production scalability |
Compared with MC9S08GB60ACLH and KE02Z32VLC2, the S908GR8E0CDWE offers lowest BOM cost and smallest footprint for legacy 8-bit control tasks, while retaining full debug capability and proven reliability in high-volume consumer appliances.
Availability
S908GR8E0CDWE is available at Aetrix Electronics and suitable for appliance motor control, industrial sensor interfaces, smart power outlets, and medical diagnostic instruments requiring stable component supply and long-term manufacturability.
Supply support for S908GR8E0CDWE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with roots in Freescale's embedded controller heritage.
The S908GR8E0CDWE belongs to the HCS08 microcontroller family designed for cost-optimized, low-power embedded control in white goods, industrial automation, and portable instrumentation.
FAQ
What is the maximum operating frequency of the S908GR8E0CDWE?
The S908GR8E0CDWE supports a maximum CPU clock frequency of 8 MHz, achieved via its integrated Clock Generator Module (CGMC) PLL using an external crystal (1–8 MHz) or internal RC source. The PLL multiplier is programmable from ×1 to ×32, allowing flexible system clock derivation while maintaining stable operation across voltage and temperature ranges.
Does the S908GR8E0CDWE support in-circuit programming?
Yes, the S908GR8E0CDWE includes on-chip MONROM (Monitor ROM) that enables in-system programming and debugging via the SCI interface without requiring external programming hardware. This feature allows firmware updates and field calibration directly through the host UART connection, reducing manufacturing and service overhead.
What low-power modes does the S908GR8E0CDWE offer?
The S908GR8E0CDWE provides two low-power modes: Wait mode (CPU halted, peripherals remain active) and Stop mode (entire system halted except for reset and selected wake-up sources). In Stop mode, typical current consumption is 1 µA, making it suitable for battery-powered applications where extended sleep duration is critical.
How many ADC channels does the S908GR8E0CDWE have, and what is their resolution?
The S908GR8E0CDWE features an 8-channel, 10-bit successive-approximation ADC with dedicated analog power (VDDAD/VSSAD) and reference pins (VREFH/VREFL). Conversion time is 4 µs per sample, and accuracy is specified as ±1 LSB integral nonlinearity (INL) and differential nonlinearity (DNL) over the full operating temperature range.
Is the S908GR8E0CDWE pin-compatible with other HCS08 family members?
No, the S908GR8E0CDWE is not pin-compatible with other HCS08 devices such as the MC9S08GB60ACLH or MC9S08QG8. It uses a unique 20-pin SOIC-20W package with specific peripheral mappings (e.g., PTA0–PTA3 as KBD0–KBD3, PTB0–PTB5 as AD0–AD5). Pin assignments must be verified against the official S908GR8E0CDWE datasheet Rev. 7.
S908GR8E0CDWE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Series:
- HC08
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- LVD, POR, PWM
- Number of I/O:
- 21
- Program Memory Size:
- 7.5KB (7.5K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 384 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 6x8b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
S908GR8E0CDWE FAQ
1.How can I place an order for S908GR8E0CDWE through Aetrix?
Please submit a Request for Quotation (RFQ) for S908GR8E0CDWE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for S908GR8E0CDWE reliable?
The price and inventory of S908GR8E0CDWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S908GR8E0CDWE is usually 5 days.
3.What payment methods are accepted for S908GR8E0CDWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S908GR8E0CDWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S908GR8E0CDWE?
S908GR8E0CDWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S908GR8E0CDWE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for S908GR8E0CDWE?
For technical support, including S908GR8E0CDWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S908GR8E0CDWE requirements.
6.How does Aetrix verify that S908GR8E0CDWE is sourced from the original manufacturer or authorized distributors?
All S908GR8E0CDWE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S908GR8E0CDWE meets industry standards.
7.What is the process for return or replacement of S908GR8E0CDWE?
All S908GR8E0CDWE units undergo pre-shipment inspection (PSI). If there is an issue with S908GR8E0CDWE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The S908GR8E0CDWE part is unused and in its original packaging.
Return procedure for S908GR8E0CDWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S908GR8E0CDWE Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
