MC9RS08KB4CWJ vs MC9RS08KA8CWJ Comparison
Detailed side-by-side comparison of MC9RS08KB4CWJ by NXP Semiconductors and MC9RS08KA8CWJ 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
MC9RS08KB4CWJ - 8-bit RS08 MCU, 4KB Flash, 20MHz | NXP
MC9RS08KB4CWJ ✗ End of LifeNXP Semiconductors
MC9RS08KA8CWJ - 8-bit RS08 MCU, 8KB Flash, 20MHz | NXP
MC9RS08KA8CWJ ⚠ Last Time BuySpecification Comparison
| Parameter | MC9RS08KB4CWJ | MC9RS08KA8CWJ |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | End of Life | Last Time Buy |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.49 | $1.68 |
| Core Processor | RS08 | — |
| Core Size | 8-bit | — |
| CPU Speed | 20 MHz | — |
| Program Memory Size | 4 KB (4K x 8) Flash | 8 KB Flash |
| 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 | — |
| Peripherals | LVD, POR, PWM, WDT | Keyboard Interface (KBI), Timers, Internal Clock Source |
| Instruction Set | HC08 subset + BGND | Subset of HC08 with added BGND instruction |
| Package | 20-pin SOIC (wide-body, tube) | 20-SOIC Wide (20-SOIC W, Tube) |
| Mounting Type | Surface Mount | Surface Mount (SMD/SMT) |
| Operating Temperature | -40C to +85C | — |
| MSL Level | [DATA_NEEDED: MSL moisture sensitivity level] | [DATA_NEEDED: MSL level] |
| RoHS Status | [DATA_NEEDED: RoHS compliance status] | [DATA_NEEDED: RoHS status from data] |
| Debug Interface | Background Debug Mode (BDM) | — |
| Data Bus Width | 8-bit | 8 bit |
| Core Architecture | — | RS08 (8-bit, HC08 subset) |
| 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 |
| Pin/Package Count | — | 20 pins |
| Operating Temperature Range | — | -40 C to +85 C (Industrial) |
| Packaging Method | — | Tube |