MC9RS08KA8CWJ vs MC9RS08KB4CWJ Comparison
Detailed side-by-side comparison of MC9RS08KA8CWJ by NXP Semiconductors and MC9RS08KB4CWJ by NXP Semiconductors. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
NXP Semiconductors
MC9RS08KA8CWJ - 8-bit RS08 MCU, 8KB Flash, 20MHz | NXP
MC9RS08KA8CWJ ⚠ Last Time BuyNXP Semiconductors
MC9RS08KB4CWJ - 8-bit RS08 MCU, 4KB Flash, 20MHz | NXP
MC9RS08KB4CWJ ✗ End of LifeSpecification Comparison
| Parameter | MC9RS08KA8CWJ | MC9RS08KB4CWJ |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Last Time Buy | End of Life |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.68 | $1.49 |
| Core Architecture | RS08 (8-bit, HC08 subset) | — |
| Data Bus Width | 8 bit | 8-bit |
| Program Memory Size | 8 KB Flash | 4 KB (4K x 8) Flash |
| Maximum CPU Frequency | 20 MHz | — |
| Operating Voltage Range | 2.5 V to 5.5 V (also stated as 2.5V/3.3V/5V) | — |
| Number of I/O Pins | 18 | — |
| Package | 20-SOIC Wide (20-SOIC W, Tube) | 20-pin SOIC (wide-body, tube) |
| Mounting Type | Surface Mount (SMD/SMT) | Surface Mount |
| Pin/Package Count | 20 pins | — |
| Operating Temperature Range | -40 C to +85 C (Industrial) | — |
| Instruction Set | Subset of HC08 with added BGND instruction | HC08 subset + BGND |
| Peripherals | Keyboard Interface (KBI), Timers, Internal Clock Source | LVD, POR, PWM, WDT |
| Packaging Method | Tube | — |
| RoHS Status | [DATA_NEEDED: RoHS status from data] | [DATA_NEEDED: RoHS compliance status] |
| MSL Level | [DATA_NEEDED: MSL level] | [DATA_NEEDED: MSL moisture sensitivity level] |
| Core Processor | — | RS08 |
| Core Size | — | 8-bit |
| CPU Speed | — | 20 MHz |
| RAM Size | — | 126 B |
| EEPROM Size | — | None (Flash-based) |
| Number of I/O | — | 18 |
| Supply Voltage Range | — | 2.5 V to 5.5 V |
| Connectivity | — | I2C, SPI |
| Operating Temperature | — | -40C to +85C |
| Debug Interface | — | Background Debug Mode (BDM) |