R5F21191SP#U0 - 16-Bit 20MHz R8C MCU | Renesas Electronics
MPN: R5F21191SP#U0 ✓ Hoạt độngR5F21191SP#U0 Tóm tắt
A microcontroller is a programmable semiconductor that combines a CPU core, memory, and peripherals on one integrated circuit. The R5F21191SP#U0 belongs to Renesas's R8C/1x family and uses the R8C/19 group. This places it in the hierarchy of embedded microcontroller, microcontroller, semiconductor, and programmable control device. The R8C architecture provides a 16-bit processing environment in a compact 20-pin surface-mount package intended for embedded systems.
Verified distributor data identifies four on-chip comparators and a watchdog timer, while the family documentation describes data-flash ROM and the same peripheral functions across the R8C/18 and R8C/19 groups. The principal distinction between those groups is the presence or absence of data-flash ROM. These integrated features reduce external component requirements for threshold detection, timing supervision, and persistent configuration in compact appliances, sensors, security equipment, office equipment, and industrial products.
The 20 MHz operating speed provides a practical balance between processing throughput, power consumption, and external-clock requirements. Its 4 KB Flash capacity supports embedded firmware for compact control loops, while the 384-byte RAM accommodates working variables and peripheral buffers. The listed operating temperature range of -20 °C to 85 °C supports consumer and general industrial environments where extended-temperature qualification is not required.
Designers should preserve the 20-LSSOP footprint and verify the complete Renesas R8C/19 pin assignment before PCB release. The component is identified as Pb-free, but detailed RoHS, REACH, halogen-free, and conflict-minerals declarations were not present in the supplied verification data. Toolchain, peripheral, and electrical details should therefore be confirmed against the manufacturer documentation before production release.
This page consolidates verified distributor specifications, source links, engineering applications, and a documented R8C/18-family cross-reference into a design-focused component record.
Bộ thay thế dễ dàng lắp đặt cho R5F21191SP#U0 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
R5F21181DSP#U0
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
R5F21191SP#U0 Tỷ lệ tối đa & tính chất điện
| CPU Bit Width | 16 bit |
| Maximum CPU Frequency | 20 MHz |
| Program Memory | 4 KB Flash (4K x 8) |
| Internal RAM | 0.375 KB (384 bytes) |
| CPU Core and Family | R8C core, R8C/1x series, R8C/19 group |
| Điện áp cung cấp hoạt động | 2.7 V to 5.5 V |
| Nominal Supply Options | 3 V and 5 V |
| Khoảng nhiệt độ hoạt động | -20 °C to 85 °C |
| Comparator Count | 4 comparators |
| Watchdog Timer | Watchdog timer (WDTO) |
| Data Flash | Present |
| Hộp | 20-LSSOP |
| Package Pin Count | 20 pins |
| Kiểu lắp đặt | Surface mount |
| Lead-Free Status | Pb-free |
| Product Classification | 16-bit single-chip microcontroller |
Hướng dẫn cấu hình chân R5F21191SP#U0 20 pins
Cấu hình chân cho R5F21191SP#U0 (20 pins gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho R5F21191SP#U0.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
R5F21191SP#U0 phù hợp cho 6 Áp dụngs: Household Appliance Control, Sensor Signal Conditioning, Security and Access Equipment, Office Equipment Control, General Industrial Control Module, Audio Equipment Control.
Household Appliance Control
The R5F21191SP#U0 fits compact household-appliance controllers because its 16-bit R8C/19 CPU operates at up to 20 MHz while occupying only a 20-LSSOP package. The four integrated comparators can support threshold-based detection of temperature, level, or switch state, reducing the need for separate analog-comparator devices. Data flash is useful for retaining configuration, calibration values, or operating profiles between power cycles. The device's 2.7 V to 5.5 V supply range supports both 3.3 V and 5 V designs. Firmware can combine comparator decisions with timer-based control, while the watchdog timer helps recover from faults. Actual production adoption still requires checking wake, sleep, and peripheral timing in the current datasheet.
Được đề xuất
Sensor Signal Conditioning
R5F21191SP#U0 is well suited to compact sensor modules that need local signal conditioning and control. Its four comparators can evaluate sensor thresholds without requiring a separate comparator IC when the input signals fall within the device's specified operating limits. The 20 MHz R8C core can sample and interpret digital sensor states, while 384 bytes of RAM supports working buffers and 4 KB of Flash accommodates the control firmware. At a 2.7 V minimum listed supply, the MCU can operate from regulated low-voltage sensor rails. Its data flash can preserve calibration constants or thresholds. Engineers must verify comparator input range, accuracy, and any required external filtering before finalizing a sensor-conditioning circuit.
Được đề xuất
Security and Access Equipment
The R5F21191SP#U0 can serve as the controller in compact security and access equipment because it combines a 16-bit processor, watchdog supervision, comparators, and persistent data flash in a 20-pin package. A security controller can use the watchdog timer to recover from stalled firmware, compare external detector or tamper signals, and retain device-specific configuration across power interruptions. Its 4 KB Flash is sufficient for compact control logic, and the 384-byte RAM can support event variables. The stated -20 °C to 85 °C range suits general indoor and industrial equipment. Designers should verify security-specific timing, input thresholds, and regulatory requirements rather than assuming that these product attributes constitute certification.
Được đề xuất
Office Equipment Control
The R5F21191SP#U0 is appropriate for office equipment controllers requiring compact logic, persistent settings, and supervisory timing. The R8C/19 group's 20 MHz 16-bit CPU can coordinate input scanning, motor or mechanism timing, and status reporting within 4 KB of Flash. Integrated comparators support simple level decisions, while data flash retains user configuration, counter values, or calibration data without external nonvolatile memory. Its 20-LSSOP package simplifies compact control boards, and its 2.7 V to 5.5 V range permits integration with both legacy 5 V logic and 3.3 V mixed-voltage systems. Firmware developers should verify the available timer, I/O, and low-power resources in the manufacturer documentation.
Được đề xuất
General Industrial Control Module
R5F21191SP#U0 can be used in general industrial control modules where a compact 16-bit MCU, watchdog timer, and nonvolatile configuration are more important than a large application processor. Its 20 MHz operating speed supports responsive state-machine control, and the four comparators can perform local threshold decisions close to the sensing circuit. Data flash provides a place for calibration values, serial settings, or production configuration, reducing external component count. The -20 °C to 85 °C operating range supports general industrial environments covered by the supplied distributor data. For safety-critical installations, engineers must perform separate reliability, EMC, transient, and functional-safety reviews because no such qualification is established by the provided sources.
Được đề xuất
Audio Equipment Control
The R5F21191SP#U0 can manage auxiliary control functions in compact audio equipment, such as input selection, level thresholds, display sequencing, and fault monitoring. The family documentation identifies audio equipment among its intended application areas, and the four comparators are useful for detecting signal or control thresholds without adding a dedicated comparator package. The 16-bit R8C/19 processor provides straightforward control-loop execution at up to 20 MHz, while data flash can preserve presets or calibration settings. Its 20-LSSOP footprint preserves board area, and the 3 V or 5 V operating options allow integration with different rail architectures. Audio signal quality itself is determined mainly by external converters and analog circuitry rather than the MCU control core.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho R5F21191SP#U0 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | R5F21181DSP#U0 |
|---|---|---|
| Package | 20-LSSOP | 20-LSSOP |
| Brand | Renesas Electronics | Renesas Electronics |
| CPU Bit Width | 16 bit | 16 bit |
| CPU Family | R8C/1x, R8C/19 group | R8C/1x, R8C/18 group |
| Data Flash | Present | Not present |
| Peripheral Functions | R8C/19 family peripheral set | Same peripheral functions as R8C/19 group, excluding the group-level data-flash distinction |
Bảo phân biệt quan trọng
- Integrated data-flash ROM (vsR5F21181DSP#U0)
- R8C/19 family positioning (vsR5F21181DSP#U0)
- Compact integrated control (vsR5F21181DSP#U0)
Ghi chú thiết kế
Design the PCB footprint for the verified 20-LSSOP package and confirm every pin assignment against the current Renesas R8C/19 datasheet before releasing the layout. The supplied sources identify the package but do not provide the complete numbered pin table, so placing signals from memory or from a generic SSOP footprint risks incorrect orientation, supply connections, and debug-port routing. Preserve the manufacturer's recommended decoupling connections, keep sensitive analog inputs away from switching nodes, and provide unobstructed access to programming or debug signals if production programming is required.
Operate the R5F21191SP#U0 within its verified 2.7 V to 5.5 V supply range and design the regulator for the selected 3 V or 5 V rail. The integrated comparator and R8C core make the MCU suitable for low-voltage control, but rail tolerance, startup behavior, and peripheral-specific limits still need confirmation in the manufacturer documentation. Use local bulk and high-frequency decoupling close to the supply pins, and account for transients if the controller operates beside relays, motors, or switched power stages. The supplied data does not include quiescent-current or current-consumption limits.
Do not substitute R5F21181DSP#U0 when the firmware stores calibration data, counters, or configuration in data flash. The verified family cross-reference states that the R8C/18 and R8C/19 groups have the same peripheral functions but differ in the presence or absence of data-flash ROM. Also avoid treating the shared 20-LSSOP package as sufficient proof of interchangeability: check the exact pin functions, reset requirements, memory map, programming procedure, and operating limits. A hardware-compatible substitution can still require application-code changes when persistent-memory services are removed.
Thông tin tuân thủ
The Mouser and GlobalSpec listings identify R5F21191SP#U0 as Pb-free. The supplied data does not explicitly state RoHS, REACH, halogen-free, conflict-minerals, or AEC-Q100 status, so those fields remain unknown or not_applicable rather than inferred.
