MC9RS08KB8CTG - 8-bit RS08 MCU, 8KB Flash, 20MHz | NXP
MPN: MC9RS08KB8CTG ✓ פעילMC9RS08KB8CTG סקירה
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, integrating a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and peripherals such as timers, ADCs, and communication interfaces. The MCU sits below microprocessors and above discrete logic in the embedded hierarchy, and the RS08KB family is a flash-based, low-pin variant within the broader Freescale/NXP 8-bit and 32-bit automotive and industrial MCU portfolio.
Key features of the MC9RS08KB8CTG include an 8 KB Flash program memory, a 20 MHz RS08 core with BGND debug instruction, a single global interrupt vector, and operation across 2.7 V to 5.5 V supply range. The device integrates an analog-to-digital converter, timer modules, and serial communication blocks, supporting reduced system cost through peripheral integration. The TSSOP-16 footprint offers compact board placement suitable for space-constrained designs.
The RS08 core is a reduced-instruction-set variant of the HC08 family, retaining code efficiency and toolchain familiarity while trimming die size. On-chip hardware breakpoints and the BGND instruction simplify in-circuit debug via standard RS08 background debug tools, lowering the engineering effort required for firmware bring-up versus pure software emulation.
Typical applications include small home appliances, sensor interface modules, LED lighting controllers, low-end motor control signal boards, and industrial sensor hubs. The wide operating voltage and industrial temperature range suit automotive body and chassis subsystems as well as factory-automation peripherals.
When designing with this MCU, ensure decoupling capacitors are placed close to the VDD pins and that unused pins follow the datasheet recommendations to avoid spurious interrupts. Migrating from larger RS08KB family members preserves pin compatibility when staying within the same package.
חלופות תחליף ישיר עבור MC9RS08KB8CTG — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם MC9RS08KB8CTG (אותו גורם צורה וטביעת רגל) — שונים ב Package, RAM Size, Program Memory Size, Core, Core Processor.
MC9RS08KB4CWJ
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MC9RS08KA1CDBR
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MC9S08QE8CTG
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MC9S08SH8MTG
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MC9S08PA8VLC
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←MC9RS08KB8CTG דירוגים מרביים ומאפיינים חשמליים
| Core | RS08 (subset of HC08 with BGND) |
| רוחב אפיק נתונים | 8 bit |
| Program Memory Size | 8 KB (8K x 8) Flash |
| Maximum CPU Frequency | 20 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V |
| טווח טמפרטורת פעולה | -40C to +85C |
| מארז | 16-TSSOP (0.173", 4.40 mm width) |
| סוג הרכבה | Surface Mount |
| Interrupt Structure | Single global interrupt vector |
| Debug Interface | RS08 background debug (BGND instruction) |
| Peripherals | ADC, Timers, Communication interfaces (per datasheet) |
| סטטוס RoHS | Compliant (per distributor listings) |
תצורת פינים של MC9RS08KB8CTG
| פין 1 | PTA0/KBIP0/TCLK0/ACMP+ — General I/O / keyboard interrupt / timer clock / analog comparator input |
| פין 2 | PTA1/KBIP1/TCLK1/ACMP- — General I/O / keyboard interrupt / timer clock / analog comparator input |
| פין 3 | PTA2/KBIP2 — General I/O / keyboard interrupt |
| פין 4 | PTA3/KBIP3/RESET_b — General I/O / keyboard interrupt / reset (bidirectional) |
| פין 5 | VDD — Power supply (2.7 V to 5.5 V) |
| פין 6 | VSS — Ground |
| פין 7 | PTB0/SCL — General I/O / I2C clock |
| פין 8 | PTB1/SDA — General I/O / I2C data |
| פין 9 | PTB2/RxD — General I/O / UART receive |
| פין 10 | PTB3/TxD — General I/O / UART transmit |
| פין 11 | PTC0/ADP0 — General I/O / ADC channel |
| פין 12 | PTC1/ADP1 — General I/O / ADC channel |
| פין 13 | PTC2/ADP2 — General I/O / ADC channel |
| פין 14 | PTC3/ADP3 — General I/O / ADC channel |
| פין 15 | BKGD/MS — Background debug / mode select |
| פין 16 | PTA4/KBIP4 — General I/O / keyboard interrupt |
יישומים טיפוסיים
MC9RS08KB8CTG מתאים עבור 6 יישוםs: Home Appliance Control, Sensor Interface Module, LED Lighting Controller, Low-end Motor Control Signal Board, Automotive Body Electronics Subsystem, Industrial Sensor Hub.
Home Appliance Control
The MC9RS08KB8CTG fits small home appliances such as coffee machines, microwave ovens, blenders, and small kitchen controllers where the firmware footprint stays under 8 KB Flash. Its 2.7 V to 5.5 V supply range and -40C to +85C industrial temperature make it tolerant of rectified mains-derived rails and warm internal environments. The 16-pin TSSOP provides adequate I/O for keypad scanning, LED indicator drive, and a UART link to control boards. Its RS08 core preserves HC08 code familiarity, allowing existing appliance firmware libraries to be re-used with minimal rewrite.
מומלץ
Sensor Interface Module
Industrial sensor-interface modules reading temperature, humidity, or proximity often need a small, deterministic 8-bit MCU to handle ADC sampling and simple protocol conversion. The MC9RS08KB8CTG's on-chip ADC and timers deliver deterministic sampling at the 20 MHz RS08 core, while the 8 KB Flash is sufficient for periodic calibration and protocol handling. The single global interrupt vector keeps the interrupt service routine overhead low, suitable for tight sensor-loop timing. The TSSOP-16 footprint mounts cleanly on compact daughter boards inside sensor housings.
מומלץ
LED Lighting Controller
In LED lighting controllers for architectural and residential dimming systems, the MC9RS08KB8CTG's 20 MHz core can drive PWM dimming channels while the on-chip ADC reads ambient light sensors and potentiometers. The 2.7 V to 5.5 V supply range supports direct connection to 5 V regulator outputs commonly used in LED driver stages. With 8 KB Flash the MCU fits full-color-mixing firmware plus simple DMX or 0-10 V protocol stacks. The TSSOP-16 package allows integration inside compact driver enclosures.
מומלץ
Low-end Motor Control Signal Board
The MC9RS08KB8CTG can act as a signal-board MCU on low-end motor-control assemblies such as small DC fans, pumps, or stepper-driven valves where a dedicated gate driver handles power conversion. The 20 MHz RS08 core computes commutation timing, while the 16-pin TSSOP exposes PWM-capable timers and a UART link to a host controller. The wide 2.7 V to 5.5 V supply and -40C to +85C range suit industrial cabinet environments. The compact Flash size intentionally forces firmware simplicity, which is appropriate for safety-critical signal logic.
מומלץ
Automotive Body Electronics Subsystem
In automotive body-electronics subsystems (mirror controllers, lighting modules, seat-position switches) the MC9RS08KB8CTG operates from a 5 V regulated battery rail, with industrial temperature tolerance covering cabin and under-hood-adjacent locations. The 16-pin TSSOP is small enough to fit behind mirror glass or inside a switch cluster. The RS08 core's HC08 instruction compatibility eases migration of legacy automotive firmware. For AEC-Q100-qualified variants, engineers should verify the specific NXP order code in the automotive portfolio.
מומלץ
Industrial Sensor Hub
Industrial sensor hubs that aggregate several analog or digital sensors on a single PCB benefit from the MC9RS08KB8CTG's on-chip timers, ADC, and serial interfaces. The MCU can read field sensors, run simple linearization, and forward processed data via UART/SPI to a higher-tier controller. The TSSOP-16 footprint is suitable for DIN-rail daughter boards, and the 2.7-5.5 V supply matches 24 V-bus-derived 5 V rails. The 8 KB Flash budget accommodates typical Modbus RTU or vendor-proprietary protocol stacks.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור MC9RS08KB8CTG — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | MC9RS08KB4CWJ | MC9RS08KA1CDBR | MC9S08QE8CTG | MC9S08SH8MTG | MC9S08PA8VLC |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-TSSOP | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same | 16-TSSOP - same |
| Core | RS08 (20 MHz) | RS08 (20 MHz) | RS08 (20 MHz) | S08 (up to 50 MHz) | S08 (up to 40 MHz) | S08 PA (20 MHz) |
| Flash Size | 8 KB | 4 KB (-50%) | 1 KB (-87%) | 8 KB (same) | 8 KB (same) | 8 KB (same) |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.4 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Pin Count | 16 | 16 | 16 | 16 | 16 | 16 |
| Debug Interface | RS08 BGND | RS08 BGND | RS08 BGND | S08 BDM | S08 BDM | S08 BDM |
מבדילים עיקריים
- RS08 core with HC08 superset instruction compatibility (לעומתMC9RS08KA1CDBR)
- 8 KB Flash versus 4 KB in lower-tier RS08KB variants (לעומתMC9RS08KB4CWJ)
- Wide 2.7 V to 5.5 V supply range with industrial temperature (לעומתMC9S08QE8CTG)
הערות תכנון
Place a 0.1 uF decoupling capacitor as close as possible to the VDD pin (pin 5) and VSS pin (pin 6), and a bulk 1 uF to 10 uF tantalum or ceramic on the supply rail. The MC9RS08KB8CTG operates from 2.7 V to 5.5 V; an LDO ahead of the MCU reduces ripple that couples into the ADC reference. Add a bulk capacitor at the regulator output to handle in-rush when the MCU wakes from stop modes.
Route the BKGD/MS pin (pin 15) directly to a debug header with a short, noise-free trace. Keep reset traces short and avoid routing them parallel to high-current switching lines. The TSSOP-16 footprint benefits from a small ground pour under the MCU and 0.1 uF bypass caps adjacent to each supply-adjacent pin to reduce EMI susceptibility and improve ADC accuracy.
Ensure unused pins are configured as outputs (or inputs with the internal pull-up enabled and externally terminated) per the datasheet, not left floating - floating inputs can drift into the linear region and draw extra current or trigger spurious interrupts. Do not exceed 5.5 V on any pin; the RS08KB is not 5 V tolerant on all digital pins when operating at lower VDD. Verify the reset pin is not driven externally during power-up to avoid locking the BGND debug mode.
For ADC applications, the MC9RS08KB8CTG's ADC reference stability directly affects conversion accuracy. Use a low-impedance reference decoupling network and avoid routing ADC inputs near switching nodes or PWM outputs. Use the smallest possible analog input bandwidth consistent with the signal of interest; additional input filtering reduces aliasing and improves effective resolution in noisy industrial environments.
מידע על תאימות
RoHS-compliant per distributor listings. AEC-Q100 qualification depends on specific variant - check NXP product page for automotive-grade ordering codes.
