SAF-C505CA-4EMCA - 8-Bit 8051 MCU, 32KB OTP, 20MHz | Infineon
部品番号: SAF-C505CA-4EMCA ⚠ ラストタイムバイ| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $14.2 | $14.20 |
| 10 | $12.95 | $129.50 |
| 100 | $11.4 | $1,140.00 |
| 500 | $9.85 | $4,925.00 |
| 1,000 | $8.5 | $8,500.00 |
| 3,000 | $7.05 | $21,150.00 |
SAF-C505CA-4EMCA 概要
An 8-bit microcontroller (often abbreviated MCU) is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals on one silicon die. The 8051 family, originally introduced by Intel in 1980 and now maintained by multiple vendors, remains one of the most widely deployed embedded instruction set architectures; derivatives like the C505CA extend the original 8051 with on-chip peripherals while preserving binary compatibility with the standard MCS-51 instruction set.
Key features of the SAF-C505CA-4EMCA include a 32 KB OTP program memory (one-time programmable), 1.25 KB on-chip SRAM, a 20 MHz maximum CPU clock, and a 5 V single supply operation. The device integrates standard 8051 peripherals including timers/counters, a programmable serial interface (UART), and bidirectional I/O ports, plus the enhanced Timer 2 with compare/capture/reload functionality described in the manufacturer datasheet. The MQFP-44 package provides 34 programmable I/O lines for typical embedded interface requirements.
The C505CA silicon combines the legacy 8051 core with Infineon-specific peripheral enhancements, allowing existing 8051 firmware to be re-used while adding modern motor-control and PWM-oriented peripherals. The OTP program memory supports field programming for low-volume automotive and industrial production runs.
Typical applications include automotive body controllers (window lift, central locking, lighting management), industrial sensor interfaces, low-end motor drives, and white goods control boards. The wide automotive operating range and 8051 software compatibility make the SAF-C505CA-4EMCA especially useful in designs that must extend the lifecycle of legacy 8051 platforms.
When designing with this part, note that the OTP memory is not re-programmable in-circuit; a separate SAF-C505CA-4EMCA with masked ROM is required for high-volume production runs above the OTP economic threshold. Always validate the pin assignments against the manufacturer datasheet before laying out the PCB footprint, because several MQFP-44 variants exist in the C500 family.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes that are not consolidated in the manufacturer datasheet alone.
ドロップイン代替品: SAF-C505CA-4EMCA — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
SAK-C505CA-4EMCA
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SAB-C505CA-4EM
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SAB-C505A-4EM
✅ ドロップイン📋 参考代替品（カタログ未掲載）
C505CA4EMCAFXQMA1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SAK-C505A-4EMCA
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SAF-C505CA-4EMCA 最大定格＆電気的特性
| Core Architecture | 8051 CISC (MCS-51 compatible) |
| データバス幅 | 8 Bit |
| CPU Clock Frequency | 20 MHz (max) |
| Program Memory Size | 32 KB (OTP) |
| RAM Size | 1.25 KB |
| I/O Voltage | 5 V (nominal) |
| Number of I/O Pins | 34 (per datasheet) |
| Package Type | 44-pin MQFP (PG-MQFP-44-2) |
| Package Style | Tray / Tape & Reel (per source variants) |
| 実装タイプ | Surface Mount |
| 動作温度範囲 | -40 °C to +85 °C (TA) |
| Peripherals | UART, Timers (T0/T1/T2 with Compare/Capture/Reload), Port 0-4 |
| Program Memory Type | OTP (One-Time Programmable) |
| RoHS ステータス | unknown |
| Manufacturer Series | C500 family / C505CA sub-family |
SAF-C505CA-4EMCA tray / tape & reel (per source variants) ピン配置ガイド
SAF-C505CA-4EMCA (tray / tape & reel (per source variants) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: SAF-C505CA-4EMCA.
詳細は データシート をご参照ください。
主な用途
SAF-C505CA-4EMCA の用途: 6 件s: Automotive Body Controller Module, Industrial Sensor Interface Node, Low-End Variable-Frequency Motor Drive, White Goods Control Board, Smart Sensor / IoT Edge Node, Industrial Automation HMI.
Automotive Body Controller Module
The SAF-C505CA-4EMCA is an ideal CPU for automotive body controller modules that aggregate window-lift, mirror-adjust, wiper, and central-locking signals at 5 V. Its 32 KB OTP memory holds the centralised state machine plus peripheral drivers, while the 1.25 KB SRAM retains per-channel timers for debouncing and PWM scheduling. The 20 MHz 8051 core executes roughly 3 MIPS in real time, sufficient to scan all inputs and command the relay/lamp outputs within the typical 20 ms cycle. With 34 I/O lines, the same MCU also interfaces directly to LIN slaves through an external transceiver such as the TLE7259-3. Industrial -40 °C to +85 °C temperature grade supports under-body and cabin placements.
おすすめ
Industrial Sensor Interface Node
Industrial sensor interface nodes digitising contact switches, photoelectric sensors, or simple 4-20 mA loops benefit from the SAF-C505CA-4EMCA's deterministic 8051 instruction set. The chip cycles through its port to take measurements, computes scaling and limit-checking, and reports results via the on-chip UART (RS-232/RS-485) at up to its serial maximum. Endian-neutral read of the 1.25 KB SRAM handles retention of calibration constants. At -40 °C to +85 °C the part supports unheated cabinets as well as factory-floor chassis. Designers pair it with a low-cost external ADC via the SPI/I2C-capable 8051 extension, providing a low noise floor in a small MQFP-44 board that fits directly onto DIN-rail mounted daughter cards.
おすすめ
Low-End Variable-Frequency Motor Drive
The SAF-C505CA-4EMCA drives small BLDC or single-phase induction motor inverters used in fans, pumps, and appliance motors, taking advantage of the integrated Timer 2 with Compare/Capture/Reload to produce complementary PWM on its I/O ports. The 8051 core computes the speed-PID loop in firmware while using the enhanced timer for hardware commutation alignment. With proper half-bridge drivers, the part can command low-current 24 V BLDC fans up to a few hundred watts via the embedded 20 MHz CPU. The wide industrial operating temperature -40 °C to +85 °C covers appliance and motor control cabinets without additional thermal management.
おすすめ
White Goods Control Board
Washing machines, dishwashers, and induction cookers commonly use 8051-class MCUs for user interface and motor coordination, and the SAF-C505CA-4EMCA continues that legacy. It scans the keypad/LED display through 34 I/O lines, runs the cycle state machine, and interconnects with motor triacs and heater SSRs via optocoupler-isolated gate drivers. The 32 KB OTP accommodates the full state machine plus service-mode diagnostic routines. EEPROM through I2C adds fault-log retention. The MCU's low cost per unit, together with its long-term support, makes it a practical fit for high-volume white-goods production where firmware is fixed.
おすすめ
Smart Sensor / IoT Edge Node
Edge sensor hubs that aggregate several analog or digital sensors before forwarding data over RS-485 or CAN use the SAF-C505CA-4EMCA for centralised protocol translation. The 5 V-tolerant I/O ports tie directly to off-the-shelf 5 V sensors; the 20 MHz 8051 cycles through the inputs and uploads the formatted frame through the on-chip UART. With its industrial temperature grade and Infineon longevity, the part is well-suited to the multi-year deployment times expected of building-automation edge nodes. Engineers can migrate to a modern XMC1000 device for new designs while keeping the C505CA silicon in service for installed equipment.
おすすめ
Industrial Automation HMI
Low-cost textile, packaging, and process-control human-machine interfaces rely on the SAF-C505CA-4EMCA for screen refreshing and keypad polling, often in conjunction with an alphanumeric LCD and a tactile matrix keypad. Its 32 KB OTP accommodates text-table rendering routines and character translation; the 1.25 KB SRAM retains menu state and customer settings through brownout events. The 8051 core scrolls text on character LCDs at a typical 4-line display refresh rate without slowing other tasks. Operating at -40 °C to +85 °C, the part tolerates unheated panels and outdoor enclosures, while the canonical 8051 ISA lets HMI firmware teams reuse legacy code across product variants.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: SAF-C505CA-4EMCA — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | SAK-C505CA-4EMCA | SAB-C505CA-4EM | SAB-C505A-4EM | C505CA4EMCAFXQMA1 | SAK-C505A-4EMCA |
|---|---|---|---|---|---|---|
| Package | 44-pin MQFP (PG-MQFP-44-2) | 44-pin MQFP (PG-MQFP-44-2) - same | 44-pin MQFP (PG-MQFP-44-2) - same | 44-pin MQFP (PG-MQFP-44-2) - same | 44-pin MQFP (PG-MQFP-44-2) - same | 44-pin MQFP (PG-MQFP-44-2) - same |
| Brand | Infineon Technologies | Infineon Technologies - same | Infineon Technologies - same | Infineon Technologies - same | Infineon Technologies - same | Infineon Technologies - same |
| Program Memory | 32 KB OTP | 32 KB Masked ROM | 32 KB ROM-less | 8-32 KB Masked ROM (per part code) | 32 KB OTP (same silicon) | 32 KB Masked ROM |
| SRAM Size | 1.25 KB | 1.25 KB | 1.25 KB | 1.25 KB | 1.25 KB | 1.25 KB |
| CPU Clock Max | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Lines | 34 | 34 | 34 | 34 | 34 | 34 |
| Automotive Grade | No (industrial / automotive body) | Yes (automotive) | No (development) | No (development) | No (industrial) | Yes (automotive) |
| Lifecycle | Last Time Buy | Limited / NRND | Limited / NRND | Limited / NRND | Last Time Buy | Limited / NRND |
主な差別化要因
- Drop-in upgrade path to automotive masked-ROM （vs SAK-C505CA-4EMCA)
- ROM-less sibling for field reconfiguration （vs SAB-C505CA-4EM)
- Identical silicon via reel-pack order code （vs C505CA4EMCAFXQMA1)
設計ノート
At 20 MHz CPU clock, 5 V supply and full I/O toggling, the SAF-C505CA-4EMCA dissipates a few hundred mW worst case in the MQFP-44 package. Typical board-level theta_JA for a 4-layer PCB with 200 mm² copper pad is 60-70 °C/W, keeping junction rise at ~10 °C above ambient. Provide at least 100 mm² ground-side copper pour around the MQFP-44 pad. No external heatsink is required for operation from -40 °C to +85 °C under typical industrial load profiles.
Place the 12 MHz to 20 MHz crystal or ceramic resonator within 6 mm of XTAL1/XTAL2 with short, matched traces and a solid local ground. Decouple each VCC pin with a 100 nF X7R plus a 10 µF tantalum or ceramic bulk cap routed through a 4 mm via. Keep the RESET/EA/PSEN traces short and place a 10 kΩ pull-up on RST. For EMI, place a ferrite bead in series with VCC and route analog ground islands only under the external ADC if one is fitted nearby.
The OTP program memory of the SAF-C505CA-4EMCA cannot be erased or re-programmed; a misprogrammed firmware becomes a permanent scrap part. Always validate OTP contents against the verification signature before placing in-circuit. The MQFP-44 footprint is shared across multiple C500 silicon variants (C505C, C505A, C505CA) but pin assignments for P2, PSEN and ALE change between die revisions - cross-check Table 2 of the manufacturer datasheet before commiting firmware written for a different C500 member.
Route the EA signal correctly for external program memory access. The exposed thermal pad on the MQFP-44 footprint is not electrically bonded in the C505CA package per the manufacturer datasheet, so float it or tie it to ground depending on design preference. Avoid long parallel runs on bus pins (P0, P2) to minimise crosstalk in industrial environments. Use a single common ground plane that is only broken to isolate high-current PWM traces if needed for motor-control applications.
コンプライアンス情報
Compliance status for the legacy SAF-C505CA-4EMCA is not surfaced in the cached distributor data. The SAK-C505CA-4EMCA is the official RoHS-compliant replacement per Infineon's product migration list. Treat the SAF suffix as legacy/non-RoHS until an official Infineon declaration is verified.
