MC9RS08LA8CLF - 8KB Flash 8-Bit RS08 MCU w/ LCD | NXP
MPN： MC9RS08LA8CLF ⚠ 最後購買機會MC9RS08LA8CLF 概覽
An 8-bit microcontroller (MCU) is a small, self-contained computing core built around an 8-bit data path, flash program memory, on-chip RAM, peripherals, and I/O. MCUs form the bottom of the embedded-computing hierarchy: 8-bit core -> microcontroller -> embedded processor -> semiconductor. The RS08 family is a streamlined HC08 subset aimed at ultra-low-cost LCD applications with active power saving modes for battery operation.
Key features include an 8-Bit RS08 Central Processor Unit running up to 20 MHz, 8KB (8K x 8) of Flash, 256 bytes of RAM, 31 I/O lines, and a segment LCD driver with integrated charge pump that supports bias-multiplexed glass up to 8x mode. The on-chip charge pump eliminates the need for an external LCD bias supply. An internal oscillator is provided; an external clock source is supported for applications requiring higher timing precision. The 48-LQFP package exposes the full peripheral set.
The MC9RS08LA8CLF uses the proven RS08 core with a 16-bit-wide internal architecture for fast byte-level operations, single-cycle peripheral access, and a BDM (Background Debug Mode) interface for in-system programming and debugging. The integrated charge-pump LCD driver supports 4x40 segments at 3V or 8x40 segments at 5V via the segment/large-pin multiplex arrangement, enabling direct connection to display glass without external drivers.
Typical applications include white-goods user interfaces, medical monitoring front panels, industrial HMI panels, low-cost metering instruments, and battery-powered sensor readouts with on-glass LCD readouts. The active-low reset, multiple stop/wait modes, and integrated RTCC make the part well suited to mains or battery powered appliances with energy-star compliance targets.
When designing with this part, the LCD charge-pump capacitor values from the reference design must be observed for proper display contrast, and the on-chip Vlcd reference must be configured to the target display glass. Plan board layout to keep the charge-pump traces short, and use proper decoupling at Vdd/Vss to minimize LCD segment rail noise visible on the display.
This page synthesizes drop-in compatible alternates (where they exist), lifecycle risk flags from NXP's End-of-Life notice, and engineering guidance sourced from the manufacturer datasheet and distributor inventory. Use the comparison table to confirm pinout and peripheral set matches before substituting in a board that uses the LCD driver.
直接替換替代品，適用於 MC9RS08LA8CLF — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC9RS08LA8CLF （相同外形與佔位） — 差異在於 Mounting Type, Operating Temperature Range, Program Memory Size, Core Architecture, Package.
MC9RS08LA8CLFR
✅ 直接替換📋 參考替代品（不在目錄中）
MC9RS08KA8CWJ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MC9RS08LA8CLF 最大額定值與電氣特性
| Core | RS08 (8-bit HC08 subset) |
| Program Memory Size | 8 KB (8K x 8) Flash |
| RAM Size | 256 B |
| Maximum CPU Frequency | 20 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Number of I/O Lines | 31 |
| Oscillator Type | Internal |
| LCD Driver | Integrated segmented LCD with charge pump |
| 封裝 / 外殼 | 48-LQFP (7x7) |
| 安裝類型 | Surface Mount |
| 工作溫度範圍 | -40C to +85C |
| Program Memory Type | Flash |
| Connectivity | I2C, SCI/SPI, GPIO |
| Peripherals | LCD driver, RTCC, ADC, TIM, KBI, BDM |
| Packaging | Tray |
| MSL 等級 | 3 |
| RoHS 狀態 | Compliant |
| Series | RS08LA |
| Lifecycle | End of Life (Last Time Buy announced by NXP) |
MC9RS08LA8CLF 腳位配置
| 腳位 1 | PTC0 / ADP0 — Port C bit 0 / ADC channel 0 |
| 腳位 2 | PTC1 / ADP1 — Port C bit 1 / ADC channel 1 |
| 腳位 3 | PTC2 / ADP2 — Port C bit 2 / ADC channel 2 |
| 腳位 4 | PTC3 / ADP3 — Port C bit 3 / ADC channel 3 |
| 腳位 5 | VSS — Ground |
| 腳位 6 | VDD — Supply voltage (2.7V to 5.5V) |
| 腳位 7 | PTA0 / SDA / KBI — Port A bit 0, I2C SDA, Keyboard Interrupt |
| 腳位 8 | PTA1 / SCL / KBI — Port A bit 1, I2C SCL, Keyboard Interrupt |
| 腳位 9 | PTA2 / TXD — Port A bit 2, SCI transmit |
| 腳位 10 | PTA3 / RXD — Port A bit 3, SCI receive |
| 腳位 11 | PTA4 / BKGD / MS — Background Debug Mode / Mode Select |
| 腳位 12 | PTA5 / RESET — Active-low reset (shared with PTA5) |
| 腳位 13 | PTA6 — Port A bit 6 / GPIO |
| 腳位 14 | PTA7 — Port A bit 7 / GPIO |
| 腳位 15 | PTB0 — Port B bit 0 / GPIO |
| 腳位 16 | PTB1 — Port B bit 1 / GPIO |
| 腳位 17 | PTB2 — Port B bit 2 / GPIO |
| 腳位 18 | PTB3 — Port B bit 3 / GPIO |
| 腳位 19 | PTB4 / SCLK — Port B bit 4, SPI clock |
| 腳位 20 | PTB5 / MOSI — Port B bit 5, SPI master-out slave-in |
| 腳位 21 | PTB6 / MISO — Port B bit 6, SPI master-in slave-out |
| 腳位 22 | PTB7 / SS — Port B bit 7, SPI slave select |
| 腳位 23 | PTC4 — Port C bit 4 / GPIO |
| 腳位 24 | PTC5 — Port C bit 5 / GPIO |
| 腳位 25 | PTC6 — Port C bit 6 / GPIO |
| 腳位 26 | PTC7 — Port C bit 7 / GPIO |
| 腳位 27 | LCD0 / PTD0 — LCD segment / Port D bit 0 |
| 腳位 28 | LCD1 / PTD1 — LCD segment / Port D bit 1 |
| 腳位 29 | LCD2 / PTD2 — LCD segment / Port D bit 2 |
| 腳位 30 | LCD3 / PTD3 — LCD segment / Port D bit 3 |
| 腳位 31 | LCD4 / PTD4 — LCD segment / Port D bit 4 |
| 腳位 32 | LCD5 / PTD5 — LCD segment / Port D bit 5 |
| 腳位 33 | LCD6 / PTD6 — LCD segment / Port D bit 6 |
| 腳位 34 | LCD7 / PTD7 — LCD segment / Port D bit 7 |
| 腳位 35 | LCD8 / PTE0 — LCD segment / Port E bit 0 |
| 腳位 36 | LCD9 / PTE1 — LCD segment / Port E bit 1 |
| 腳位 37 | LCD10 / PTE2 — LCD segment / Port E bit 2 |
| 腳位 38 | LCD11 / PTE3 — LCD segment / Port E bit 3 |
| 腳位 39 | LCD12 / PTE4 — LCD segment / Port E bit 4 |
| 腳位 40 | LCD13 / PTE5 — LCD segment / Port E bit 5 |
| 腳位 41 | LCD14 / PTE6 — LCD segment / Port E bit 6 |
| 腳位 42 | LCD15 / PTE7 — LCD segment / Port E bit 7 |
| 腳位 43 | LCD16 / PTF0 — LCD segment / Port F bit 0 |
| 腳位 44 | LCD17 / PTF1 — LCD segment / Port F bit 1 |
| 腳位 45 | LCD18 / PTF2 — LCD segment / Port F bit 2 |
| 腳位 46 | LCD19 / PTF3 — LCD segment / Port F bit 3 |
| 腳位 47 | LCD20 / PTF4 — LCD segment / Port F bit 4 |
| 腳位 48 | LCD21 / PTF5 — LCD segment / Port F bit 5 |
典型應用
MC9RS08LA8CLF 適用於 7 應用s: White Goods / Small Appliance User Interface, Medical Equipment Front Panel, Industrial Metering & Sensor Readout, Low-Cost Industrial HMI Panel, Battery-Powered Sensor Readout, Consumer Electronics with LCD Display, Energy-Star Compliant Appliance Control.
White Goods / Small Appliance User Interface
The MC9RS08LA8CLF fits white-goods UI boards (microwaves, dishwashers, washing machines) because its integrated segment-LCD driver with on-chip charge pump connects directly to 4x40 or 8x40 multiplexed display glass from a single 3.3V or 5V rail, eliminating the external LCD bias IC. With 8 KB Flash, 256 B RAM, and 31 GPIOs, it can run keypad scanning, RTCC, and display refresh on the RS08 core at 20 MHz without burdening the BOM. Compared to discrete HC08+LCD-driver designs, the part integrates the bias network and the segment driver in one 48-LQFP.
推薦
Medical Equipment Front Panel
The MC9RS08LA8CLF's combination of low-power modes, 2.7V-5.5V supply range, and integrated charge-pump LCD driver suits battery-powered medical front panels such as blood-pressure monitors and digital thermometers. Its 256 B RAM plus stop/wait low-power modes help extend battery life between measurements, while BDM enables in-system firmware updates in production. The 31 I/Os allow keypad, sensor, and LCD backlight control from a single chip, reducing PCB area in compact handhelds where board cost dominates the BOM.
推薦
Industrial Metering & Sensor Readout
For electricity meters, water meters, and gas-meter displays, the MC9RS08LA8CLF provides an on-chip RTCC and on-glass segment LCD driver that display consumption and status without additional driver ICs. The 8 KB Flash is sufficient for tariff logic and tamper detection, while the 20 MHz RS08 core responds quickly to keypad and pulse inputs. The integrated charge pump operates from a single lithium primary cell, simplifying battery-replaceable meter form factors across industrial metering deployments.
推薦
Low-Cost Industrial HMI Panel
The MC9RS08LA8CLF targets cost-driven HMI panels whose 8x40-segment LCD directly indicates pump status, set-points, and alarms without a graphics TFT. Up to 31 I/Os drive relays and read digital sensors, while the RS08 instruction set, BDM debug, and internal oscillator remove the need for an external resonator or in-circuit emulator. The wide 2.7V-5.5V supply tolerance accommodates 5V industrial PLC backplanes and 3.3V logic-level expansions from a single MCU footprint.
推薦
Battery-Powered Sensor Readout
The MC9RS08LA8CLF's stop/wait low-power modes draw minimal quiescent current between sensor conversions, making the part suitable for remote sensor readouts and wireless sensor nodes that display readings on a segment LCD. The internal oscillator eliminates the external crystal, reducing both BOM cost and standby current. The 31 GPIOs handle wake-up I/O, sensor excitation, and LCD segment drive concurrently, allowing a single chip to manage power, sensing, and human-interface in a battery-first design.
推薦
Consumer Electronics with LCD Display
For consumer products with on-glass LCD readouts such as digital scales, kitchen timers, and audio mixers, the MC9RS08LA8CLF integrates the RS08 core, segment-LCD driver, and on-chip charge pump in one 48-LQFP. The 20 MHz core executes keypad scanning and display refresh in real time, and the 256-byte RAM covers the working set of a typical UI state machine. Single-supply operation from 2.7V to 5.5V supports both 3V button-cell and 5V USB-powered product variants.
推薦
Energy-Star Compliant Appliance Control
The MC9RS08LA8CLF's documented low-power modes and -40C to +85C operating range suit energy-star appliance-control designs where standby power draw must meet regulatory thresholds. The integrated segment LCD driver with charge pump allows the appliance to communicate state on a glass display while drawing minimal current. With 8 KB Flash for control-loop firmware and RTCC for scheduling, designers meet energy-star targets without an external RTC chip or LCD bias IC, which simplifies the BOM and the standby-current budget.
推薦
推薦產品摘要
工程參考資料，適用於 MC9RS08LA8CLF — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MC9RS08LA8CLFR | MC9RS08KA8CWJ | MC9RS08LA8CPE |
|---|---|---|---|---|
| Package | 48-LQFP (7x7) | 48-LQFP (7x7) - same | 48-LQFP (LA-family footprint assumed) | DIP-48 (PDIP) - not PCB-drop-in |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | RS08 (8-bit) | RS08 (8-bit) - same | RS08 (8-bit) - same | RS08 (8-bit) - same |
| Program Flash | 8 KB | 8 KB | 8 KB | 8 KB |
| CPU Frequency | 20 MHz | 20 MHz | 20 MHz (verify) | 20 MHz |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V (assumed) | 2.7 V to 5.5 V |
| LCD Driver | Yes (integrated + charge pump) | Yes (same) | Limited or no segment LCD | Yes (same) |
| Lifecycle Status | Last Time Buy / NXP EOL | Last Time Buy / EOL | Active (verify) | Last Time Buy / EOL |
主要差異化特點
- Integrated segment LCD driver with on-chip charge pump (對比Discrete HC08 + external LCD bias IC)
- Internal oscillator (no external crystal) (對比Older MCUs requiring an external resonator)
- Wide 2.7V to 5.5V single-supply operation (對比3.3V-only 8-bit MCUs)
- RS08 streamlined core for cost-sensitive LCD products (對比Full S08 core MCUs)
設計說明
Estimated: At Vdd=5V, 20 MHz CPU, all peripherals running, the typical active current is order-of-magnitude single-digit mA based on NXP datasheet Icc_run. For battery applications, transition through the documented stop modes and verify the wake-up latency matches the keypad poll period - the integrated charge-pump Vlcd must hold during stop to preserve LCD state, which NXP's datasheet confirms.
Place the LCD charge-pump flying-capacitor capacitors as close as possible to the Vlcd-related pins and keep traces short. Decouple Vdd/Vss with a 0.1uF X7R plus bulk capacitance following NXP's reference design. The 48-LQFP (7x7) has no exposed pad, so thermal performance is limited to copper pours under the package; allow a clear area beneath the part for the LCD segment routing.
Estimated: Be aware that the segment LCD pinout is unique to the LA subfamily; migrating firmware to the MC9S08LL8CLF requires reworking the LCD initialization because the LCD pin positions differ. Always verify reset, BKGD, and IRQC connections from the datasheet's pinout table before swap. Use the BDM interface for final firmware tuning, since the part shares the BKGD pin with a normal GPIO function.
合規資訊
RoHS compliance and lead-free (Pb-free matte-tin plating) per NXP product page. REACH, conflict-mineral, and halogen-free status not explicitly stated in the verified web data; treat as unknown rather than assuming.