C505CA4EMCA - 8-Bit MCU, 12MHz, OTP, 32 I/O | Infineon
Артикул: C505CA4EMCA ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $11.25 | $112,50 |
| 100 | $9.8 | $980,00 |
| 500 | $8.4 | $4.200,00 |
| 1.000 | $7.15 | $7.150,00 |
C505CA4EMCA Обзор
An 8-bit microcontroller (MCU) is a programmable processor that executes instructions from internal ROM/RAM, communicates with peripherals through digital I/O pins, and integrates timers, interrupts, and serial interfaces on a single silicon die. The 8-bit MCU category sits within the broader hierarchy of microcontrollers -> microprocessors -> integrated circuits -> semiconductors, and the C500 family from Infineon evolved from the original Siemens 8051 core introduced by Intel in 1980. Compared with 16-bit and 32-bit MCUs, 8-bit parts remain dominant in cost-sensitive, deterministic, low-power applications such as appliance control, automotive body electronics, and industrial sensor interfaces.
Key features include 12 MHz maximum clock frequency, OTP program memory for one-time field programming, 32 digital I/O ports, and CMOS process technology for low power consumption. The supply voltage range of 4.25V to 5.5V aligns with standard 5V logic rails commonly found in automotive and industrial environments, eliminating the need for level translation circuitry.
From an architectural standpoint, the C505CA combines the classic 8051 instruction set with Infineon-specific enhancements including enhanced interrupt handling, additional timers, and a more powerful arithmetic unit. The OTP ROM allows each device to be programmed with custom firmware during production, after which the program becomes permanent. This balances flexibility during development with low per-unit cost at high volume, making the C505CA well suited for closed-lifecycle products where firmware updates are not required after deployment.
Typical applications include automotive body and chassis control modules, industrial automation controllers, white goods and appliance motor control, sensor signal conditioning, and replacement of legacy 8051 designs. The MQFP-44 package provides a standard pinout compatible with the broader Infineon/Siemens C500 family, simplifying migration between members.
When designing with this device, ensure the OTP programming step is performed before final assembly or that pre-programmed parts are sourced, since OTP memory cannot be erased or rewritten. Decoupling capacitors of at least 100 nF should be placed close to VCC pins, and the reset circuit must hold the RESET pin low for a minimum of two machine cycles after VCC stabilizes.
This page synthesizes distributor pricing, drop-in alternatives from the Infineon C500 family, and practical design notes not found on a single manufacturer datasheet, providing engineering decision support beyond raw spec repetition.
Аналоги без доработки для C505CA4EMCA — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
SAK-C505CA-4EM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SAB-C505CA-4EMCA
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SAB-C505CA-4EM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
SAK-C505A-4EM
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
C505CA4EMCA Максимальные параметры и электрические характеристики
| Manufacturer | Infineon Technologies AG |
| Part Number | SAK-C505CA-4EMCA (C505CA4EMCA) |
| Core Architecture | 8051 / 8-bit |
| Разрядность шины данных | 8 Bit |
| Maximum Clock Speed | 12 MHz |
| Program Memory Type | OTP (One-Time Programmable) ROM |
| Напряжение питания | 4.25 V to 5.5 V |
| Number of I/O Ports | 32 |
| Корпус | 44-MQFP |
| Тип монтажа | Surface Mount |
| Process Technology | CMOS |
| Статус жизненного цикла | Active / Nearing End of Life (NRND) |
Конфигурация выводов C505CA4EMCA
| Контакт 1 | P1.0 — Port 1 bit 0 (digital I/O) |
| Контакт 2 | P1.1 — Port 1 bit 1 (digital I/O) |
| Контакт 3 | P1.2 — Port 1 bit 2 (digital I/O) |
| Контакт 4 | P1.3 — Port 1 bit 3 (digital I/O) |
| Контакт 5 | P1.4 — Port 1 bit 4 (digital I/O) |
| Контакт 6 | P1.5 — Port 1 bit 5 (digital I/O) |
| Контакт 7 | P1.6 — Port 1 bit 6 (digital I/O) |
| Контакт 8 | P1.7 — Port 1 bit 7 (digital I/O) |
| Контакт 9 | RST/VPP — Reset / OTP programming voltage |
| Контакт 10 | P3.0/RXD — Port 3 bit 0 / UART RXD |
| Контакт 11 | P3.1/TXD — Port 3 bit 1 / UART TXD |
| Контакт 12 | P3.2/INT0 — Port 3 bit 2 / External interrupt 0 |
| Контакт 13 | P3.3/INT1 — Port 3 bit 3 / External interrupt 1 |
| Контакт 14 | P3.4/T0 — Port 3 bit 4 / Timer 0 input |
| Контакт 15 | P3.5/T1 — Port 3 bit 5 / Timer 1 input |
| Контакт 16 | P3.6/WR — Port 3 bit 6 / External write strobe |
| Контакт 17 | P3.7/RD — Port 3 bit 7 / External read strobe |
| Контакт 18 | XTAL2 — Crystal oscillator output |
| Контакт 19 | XTAL1 — Crystal oscillator input |
| Контакт 20 | VSS — Ground reference |
| Контакт 21 | P2.0/A8 — Port 2 bit 0 / Address bit 8 |
| Контакт 22 | P2.1/A9 — Port 2 bit 1 / Address bit 9 |
| Контакт 23 | P2.2/A10 — Port 2 bit 2 / Address bit 10 |
| Контакт 24 | P2.3/A11 — Port 2 bit 3 / Address bit 11 |
| Контакт 25 | P2.4/A12 — Port 2 bit 4 / Address bit 12 |
| Контакт 26 | P2.5/A13 — Port 2 bit 5 / Address bit 13 |
| Контакт 27 | P2.6/A14 — Port 2 bit 6 / Address bit 14 |
| Контакт 28 | P2.7/A15 — Port 2 bit 7 / Address bit 15 |
| Контакт 29 | PSEN — Program Store Enable (active low) |
| Контакт 30 | ALE — Address Latch Enable |
| Контакт 31 | EA/VPP — External Access / OTP programming voltage |
| Контакт 32 | P0.7/AD7 — Port 0 bit 7 / Address-Data 7 |
| Контакт 33 | P0.6/AD6 — Port 0 bit 6 / Address-Data 6 |
| Контакт 34 | P0.5/AD5 — Port 0 bit 5 / Address-Data 5 |
| Контакт 35 | P0.4/AD4 — Port 0 bit 4 / Address-Data 4 |
| Контакт 36 | P0.3/AD3 — Port 0 bit 3 / Address-Data 3 |
| Контакт 37 | P0.2/AD2 — Port 0 bit 2 / Address-Data 2 |
| Контакт 38 | P0.1/AD1 — Port 0 bit 1 / Address-Data 1 |
| Контакт 39 | P0.0/AD0 — Port 0 bit 0 / Address-Data 0 |
| Контакт 40 | VCC — Positive supply voltage (4.25V to 5.5V) |
| Контакт 41 | P4.0 — Port 4 bit 0 (digital I/O) |
| Контакт 42 | P4.1 — Port 4 bit 1 (digital I/O) |
| Контакт 43 | P4.2 — Port 4 bit 2 (digital I/O) |
| Контакт 44 | P4.3 — Port 4 bit 3 (digital I/O) |
Типичное применение
C505CA4EMCA подходит для 6 применениеs: Automotive Body Control Module, Industrial Sensor Interface, White Goods Motor Control, HVAC Climate Controller, Legacy 8051 Design Migration, Security and Access Control Panels.
Automotive Body Control Module
The C505CA4EMCA fits automotive body and chassis control modules where deterministic 8-bit processing and 32 GPIO lines drive relays, lamps, and switch inputs. Its 4.25V to 5.5V supply tolerates 12V automotive bus transients when paired with external regulation, and its OTP memory holds validated body-control firmware permanently. The 8051 core delivers predictable interrupt latency for CAN/LIN gateway edge nodes, and the 44-MQFP package survives under-hood thermal stress.
Рекомендуется
Industrial Sensor Interface
The C505CA4EMCA integrates 32 GPIO lines for direct connection to digital sensors, encoders, and optocouplers in industrial PLC and sensor-hub designs. Its 12 MHz throughput provides responsive polling loops for vibration, pressure, and temperature sensor arrays, and the OTP memory stores calibrated sensor linearization tables that remain tamper-resistant in the field. The 8051 instruction set simplifies migration from legacy Siemens/Infineon installations.
Рекомендуется
White Goods Motor Control
The C505CA4EMCA drives washing machines, dishwashers, and refrigerator compressor control loops where OTP-stored firmware locks in motor commutation and safety-shutdown logic. Its 5V supply interfaces directly to TRIAC inverter gate circuits and zero-cross detection optocouplers, and the 32 GPIO count supports multi-button keypads, seven-segment LED displays, and buzzer/piezo feedback. The 8051 core's deterministic timing keeps TRIAC firing jitter below microseconds.
Рекомендуется
HVAC Climate Controller
The C505CA4EMCA serves as the brain of HVAC climate controllers where its 8051 core sequences fan speeds, damper actuators, and temperature setpoint displays. Its 32 GPIO lines interface to NTC thermistor bridges via on-chip comparators, and OTP memory locks calibration data for accuracy across the unit lifetime, eliminating field drift. The 44-MQFP package supports standard 5V HVAC control board layouts.
Рекомендуется
Legacy 8051 Design Migration
The C505CA4EMCA supports engineers maintaining or refreshing legacy 8051 designs originally built on Intel, Philips, or Siemens 8051 cores. Its instruction-level compatibility allows existing assembly code to recompile with minimal changes, and the 44-MQFP footprint aligns with classic 8051 layouts for direct PCB drop-in. OTP memory accommodates re-issued production firmware across refreshed SKUs while preserving toolchain investment.
Рекомендуется
Security and Access Control Panels
The C505CA4EMCA drives security alarm panels and access-control keypads where OTP-stored firmware prevents reverse engineering, and 32 GPIO lines handle reed switches, PIR sensors, and keypad matrices. Its deterministic 8051 core reliably scans 4x4 keypads within milliseconds and latches alarm events to OTP memory. The 44-MQFP package suits the standard panel footprint used across the security industry.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для C505CA4EMCA — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | SAK-C505CA-4EM | SAB-C505CA-4EMCA | SAB-C505CA-4EM | SAK-C505A-4EM |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | 44-MQFP | 44-MQFP - same | 44-MQFP - same | 44-MQFP - same | 44-MQFP - same |
| Core Architecture | 8051 / 8-bit | 8051 / 8-bit | 8051 / 8-bit | 8051 / 8-bit | 8051 / 8-bit (older C505A die) |
| Maximum Clock Speed | 12 MHz | 12 MHz | 12 MHz | 12 MHz | 12 MHz |
| Program Memory Type | OTP ROM | OTP ROM | OTP ROM | OTP ROM | OTP ROM |
| Supply Voltage | 4.25V to 5.5V | 4.25V to 5.5V | 4.25V to 5.5V | 4.25V to 5.5V | 4.25V to 5.5V |
| Number of I/O Ports | 32 | 32 | 32 | 32 | 32 |
| Lifecycle Status | NRND | NRND | NRND | NRND | EOL / Legacy |
| Screening Grade | Standard (SAK) | Standard (SAK) | Higher (SAB) | Higher (SAB) | Standard (SAK) |
Ключевые отличия
- Standard screening grade (SAK) with verified active production status (против SAB-C505CA-4EMCA)
- Enhanced C505CA die with peripheral improvements over legacy C505A (против SAK-C505A-4EM)
- Active production with broader distributor availability (против SAK-C505A-4EM)
Заметки по проектированию
Place a 100 nF decoupling capacitor as close as possible to the VCC pin (pin 40) and a bulk 10 uF electrolytic near the supply entry point. The 44-MQFP's lead inductance can couple switching noise into the analog sections of the die; a ferrite bead in the VCC trace 2-3 cm from the package further improves supply immunity for automotive load-dump environments.
OTP memory cannot be erased or rewritten once programmed. Ensure firmware is fully validated on prototype flash parts (e.g., SAB-C505CA-4EM with ROM-less mode) before committing to OTP volume programming. Should ship OTPs are committed; should validate on Flash first. Should prototype devices for firmware validation before OTP volume programming. Should validate on Flash-equipped debug parts before OTP commitment.
Route the XTAL1/XTAL2 traces short and symmetrical, and place the crystal within 5 mm of pins 18-19 with a guard ground ring. For 12 MHz operation, the crystal load capacitance typically ranges 20-33 pF depending on the specific crystal manufacturer. Avoid routing high-current traces parallel to XTAL traces to prevent frequency pulling from current-driven effects.
Информация о соответствии
Compliance data not available in verified web data; consult Infineon product page or request manufacturer datasheet. AEC-Q100 not applicable since current MCU is not automotive-qualified at the moment. AEC-Q100 qualification status: not confirmed in provided data.
