SABC505CA-4EM - 8-Bit CMOS MCU, C505 Family | Infineon
料号： SABC505CA-4EM ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.4 | $4,200.00 |
| 1,000 | $7.15 | $7,150.00 |
SABC505CA-4EM 概述
An 8-bit MCU (microcontroller unit) is a self-contained processor core plus RAM, ROM/Flash/OTP, and peripherals on a single silicon die. It belongs to the hierarchy: 8-bit microcontroller -> microcontroller -> embedded processor -> integrated circuit -> semiconductor. The C505 family is widely used in industrial automation, automotive body and chassis ECUs, and consumer appliances where deterministic real-time behaviour, low power, and a compact code footprint are required.
Key features include an industry-standard 8051 instruction set for binary compatibility with existing code bases, OTP program memory for low-cost volume production, on-chip oscillator, multiple timers/counters, a programmable serial interface (UART), and parallel I/O. The C505CA variant adds an integrated CAN (Controller Area Network) controller, which is the principal reason this part was selected in automotive and industrial networking designs. CMOS process technology keeps quiescent current low, allowing battery-friendly operation.
From an architectural standpoint, the SABC505CA-4EM uses the classic 8051 dual-pointer scheme, an 8-bit ALU with extended addressing, and a 16-bit program counter. Internal registers, stack, and interrupt structure remain identical to the original MCS-51, easing migration from Intel 8051 / Siemens / Infineon legacy designs. The OTP cell array is programmed once at production time using standard 8051 programmers, which makes the device attractive for high-volume, low-unit-cost applications.
Typical applications include automotive body controllers, CAN node endpoints, HVAC blower controls, instrument clusters, simple industrial sensor interfaces, and white-goods motor control. The combination of 8051 code reuse and on-chip CAN reduces BOM cost versus discrete CAN transceivers plus an external protocol controller.
When designing with this part, ensure the OTP programming socket, security bit, and lock bits are configured before code commit; the OTP cannot be erased. Verify VCC decoupling and reset supervisor behaviour to match 8051 timing expectations (especially the minimum reset pulse width). The part is now mature/EOL - design new platforms around flash-based successors such as the XC800 or TLE984x families.
直接替换替代料： SABC505CA-4EM ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
SABC505CA-4EM/BB
✅ 直接替换📋 参考替代料（不在目录中）
SAB-C505CA-4EM CA
✅ 直接替换📋 参考替代料（不在目录中）
SABC505CA-4EM
✅ 直接替换✓ 有现货
$7.15 / 个
查看数据手册 →SABC505CA-4EM 最大额定值与电气特性
| Core Architecture | 8051 (MCS-51 compatible) |
| 数据总线宽度 | 8 bit |
| Program Memory Type | OTP (One-Time Programmable) |
| Family | C505 / SAB C505 |
| 封装 | MQFP-44-2 (44-pin Metric QFP) |
| 安装类型 | Surface Mount |
| On-Chip CAN Controller | Yes (per family datasheet) |
| RoHS 状态 | unknown |
| Lead-Free | unknown |
SABC505CA-4EM 引脚配置
| 引脚 1 | P1.0/T2 — Port 1.0 / Timer 2 input |
| 引脚 2 | P1.1/T2EX — Port 1.1 / Timer 2 trigger |
| 引脚 3 | P1.2 — Port 1.2 |
| 引脚 4 | P1.3 — Port 1.3 |
| 引脚 5 | P1.4 — Port 1.4 |
| 引脚 6 | P1.5 — Port 1.5 |
| 引脚 7 | P1.6 — Port 1.6 |
| 引脚 8 | P1.7 — Port 1.7 |
| 引脚 9 | RST — Reset input (active high) |
| 引脚 10 | P3.0/RXD — Port 3.0 / UART RXD |
| 引脚 11 | P3.1/TXD — Port 3.1 / UART TXD |
| 引脚 12 | P3.2/INT0 — Port 3.2 / External interrupt 0 |
| 引脚 13 | P3.3/INT1 — Port 3.3 / External interrupt 1 |
| 引脚 14 | P3.4/T0 — Port 3.4 / Timer 0 input |
| 引脚 15 | P3.5/T1 — Port 3.5 / Timer 1 input |
| 引脚 16 | P3.6/WR# — Port 3.6 / External write strobe |
| 引脚 17 | P3.7/RD# — Port 3.7 / External read strobe |
| 引脚 18 | XTAL2 — Crystal oscillator output |
| 引脚 19 | XTAL1 — Crystal oscillator input |
| 引脚 20 | VSS — Ground |
| 引脚 21 | VCC — Positive supply |
| 引脚 22 | P2.0/A8 — Port 2.0 / Address bit 8 |
| 引脚 23 | P2.1/A9 — Port 2.1 / Address bit 9 |
| 引脚 24 | P2.2/A10 — Port 2.2 / Address bit 10 |
| 引脚 25 | P2.3/A11 — Port 2.3 / Address bit 11 |
| 引脚 26 | P2.4/A12 — Port 2.4 / Address bit 12 |
| 引脚 27 | P2.5/A13 — Port 2.5 / Address bit 13 |
| 引脚 28 | P2.6/A14 — Port 2.6 / Address bit 14 |
| 引脚 29 | P2.7/A15 — Port 2.7 / Address bit 15 |
| 引脚 30 | PSEN# — Program Store Enable |
| 引脚 31 | ALE — Address Latch Enable |
| 引脚 32 | EA#/VPP — External Access / OTP programming voltage |
| 引脚 33 | P0.0/AD0 — Port 0.0 / Multiplexed address-data 0 |
| 引脚 34 | P0.1/AD1 — Port 0.1 / Multiplexed address-data 1 |
| 引脚 35 | P0.2/AD2 — Port 0.2 / Multiplexed address-data 2 |
| 引脚 36 | P0.3/AD3 — Port 0.3 / Multiplexed address-data 3 |
| 引脚 37 | P0.4/AD4 — Port 0.4 / Multiplexed address-data 4 |
| 引脚 38 | P0.5/AD5 — Port 0.5 / Multiplexed address-data 5 |
| 引脚 39 | P0.6/AD6 — Port 0.6 / Multiplexed address-data 6 |
| 引脚 40 | P0.7/AD7 — Port 0.7 / Multiplexed address-data 7 |
| 引脚 41 | CAN_TXDC — CAN controller TX output |
| 引脚 42 | CAN_RXDC — CAN controller RX input |
| 引脚 43 | NC — Not connected (per datasheet) |
| 引脚 44 | VCC — Positive supply (secondary) |
典型应用
SABC505CA-4EM 适用于 6 应用s: Automotive Body Control Module (BCM), HVAC Blower and Fan Controller, Industrial CAN Sensor Node, White-Goods Motor Control (Washing Machine / Dishwasher), Instrument Cluster Display Driver, Access Control and Door Entry Panels.
Automotive Body Control Module (BCM)
The SABC505CA-4EM's integrated CAN 2.0A/B controller and 8051 instruction set make it a natural fit for body control modules that aggregate door locks, lighting, wipers, and mirror switches onto a single CAN bus. Its MQFP-44 footprint exposes sufficient I/O to scan a switch matrix while still leaving pins for CAN TX/RX, a LIN-UART software stack, and PWM-driven lamp drivers. Compared with newer flash MCUs the SABC505CA-4EM lacks in-application reprogramming, but its mature toolchain and stable OTP supply chain keep it cost-effective for high-volume BCM platforms built before 2010 and still in service.
推荐
HVAC Blower and Fan Controller
In HVAC blower controls the SABC505CA-4EM uses its on-chip timers to drive a TRIAC-phase-angle or PWM signal into a gate driver, regulating fan speed from a closed-loop temperature input read through the ADC channels. The 8051 core is fast enough to execute a 10 ms control loop while servicing the CAN interface for cabin-network commands. The MQFP-44 package supplies ample GPIO for keypad inputs, LED indicators, and tachometer feedback without external logic. The OTP memory ensures firmware cannot be accidentally overwritten by field disturbances, which is valuable in long-life appliance designs.
推荐
Industrial CAN Sensor Node
Industrial CAN sensor nodes such as pressure, temperature, or proximity transmitters benefit from the SABC505CA-4EM's deterministic 8051 interrupt response and on-chip CAN module. The 8-bit ALU is sufficient to linearise a sensor reading, apply a calibration table, and broadcast a CAN frame at 125 kbit/s or 500 kbit/s. The OTP program memory prevents accidental firmware corruption in electrically noisy industrial environments. With its compact 44-pin MQFP package the MCU plus a CAN transceiver and LDO fit on a sub-25 mm x 25 mm PCB, ideal for inline sensor housings.
推荐
White-Goods Motor Control (Washing Machine / Dishwasher)
White-goods main boards historically use the C505 family for cost-sensitive motor-control platforms. The SABC505CA-4EM coordinates the universal motor, drain pump, door lock, and user keypad while exposing a service UART for factory programming. Its 8051 instruction set lets engineers reuse libraries for triac commutation, water-level sensing, and imbalance detection. OTP memory guarantees that firmware revisions cannot be flashed in the field, which protects the appliance's safety and warranty integrity. The MQFP-44 footprint also matches the legacy PCB layout used by European white-goods OEMs.
推荐
Instrument Cluster Display Driver
Automotive instrument clusters built around the SABC505CA-4EM use the MCU to drive stepper-motor gauge pointers, read fuel/temperature sensors via ADC, and exchange data with the powertrain ECU over the on-chip CAN controller. The 8051's fast interrupt latency enables precise stepper microstepping at low speeds, while the dual UARTs allow simultaneous K-line diagnostic communication and CAN traffic. Although modern clusters use dedicated stepper-driver ASICs, the C505CA retains a place in cost-sensitive two-gauge clusters and aftermarket replacement boards.
推荐
Access Control and Door Entry Panels
Building access control panels and keypad door-entry stations use the SABC505CA-4EM to scan matrix keypads, drive piezo buzzers, and communicate with a central controller via CAN or RS-485 (UART). The 8051 code base is mature for these applications and is widely available as open-source reference. OTP memory prevents unauthorised firmware replacement, which is critical for security panels. The MQFP-44 package fits comfortably on a single-sided 80x54 mm keypad PCB together with the relay driver and magnetic-card reader interface.
推荐
推荐产品汇总
工程参考数据： SABC505CA-4EM ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | SABC505CA-4EM/BB | SAB-C505CA-4EM CA | SABC505CA-4EM (Siemens AG original) |
|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon |
| Package | MQFP-44-2 | MQFP-44-2 | MQFP-44-2 | MQFP-44-2 |
| Core | 8051 (8-bit) | 8051 (8-bit) | 8051 (8-bit) | 8051 (8-bit) |
| Program Memory | OTP | OTP | OTP | OTP |
| On-chip CAN | Yes | Yes | Yes | Yes |
| Pin Count | 44 | 44 | 44 | 44 |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Approx. 1000-piece Price (USD) | 7.15 | 7.10 | 7.20 | 7.50 |
关键差异点
- On-chip CAN 2.0A/B controller eliminates external protocol silicon （对比 SAB80C537)
- 8051 instruction set ensures binary code reuse from legacy Siemens/Infineon designs （对比 SABC505CL-4EM (LED variant))
- Mature MQFP-44 footprint compatible with European OEM PCB tooling still in service （对比 Modern flash-based successors (XC800, TLE984x))
设计说明
The SABC505CA-4EM requires a stable 5 V VCC supply with a 100 nF decoupling capacitor placed within 5 mm of the VCC pins (pin 21 and pin 44) and a bulk 10 uF electrolytic on the supply rail. According to the C505 family datasheet, the on-chip voltage regulator rejects short transients but brown-out behaviour must be handled by an external supervisor (such as the TLE4271-2) for automotive 12 V load-dump profiles. Estimated: assuming a 20 mA active supply current at 12 MHz oscillator, power dissipation is ~100 mW - no heatsink required in MQFP-44.
Because the SABC505CA-4EM uses OTP program memory, any programming error is permanent - always verify the security-bit configuration and OTP blank-check before committing code. Per the C505 datasheet, the EA#/VPP pin must be held at the correct level during reset to select OTP or external program memory. Most field returns on C505 platforms are caused by missing decoupling on the VCC/EA# pins or by holding EA# low when the application expects internal OTP execution.
Route the XTAL1/XTAL2 traces short (<10 mm) and surround them with a ground guard to limit EMI radiation from the crystal oscillator. Place the CAN TXDC/RXDC traces as a matched-length differential pair (skew <2 mm) and route them away from PWM-driven gate-driver signals to avoid common-mode noise. The MQFP-44 package is pin-compatible with most C505 variants; keep the PCB layout generic across the family if you anticipate migration to flash-based successors such as the XC800 or TLE984x.
合规信息
Compliance status could not be verified from the provided web data. As an obsolete 8-bit MCU from the early 2000s, the original part was supplied both in leaded and lead-free variants; verify the specific lot date code with the broker before ordering for new automotive programmes.
