SAF-C505CA-4EMCA - 8-Bit 8051 MCU, 32KB OTP, 20MHz | Infineon
Référence : SAF-C505CA-4EMCA ⚠ Dernier achat| Qté | Prix unitaire | Total |
|---|---|---|
| 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 Présentation
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.
Alternatives de remplacement direct pour SAF-C505CA-4EMCA — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
SAK-C505CA-4EMCA
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SAB-C505CA-4EM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SAB-C505A-4EM
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
C505CA4EMCAFXQMA1
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SAK-C505A-4EMCA
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
SAF-C505CA-4EMCA Valeurs maximales et caractéristiques électriques
| Core Architecture | 8051 CISC (MCS-51 compatible) |
| Largeur du bus de données | 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) |
| Type de montage | Surface Mount |
| Plage de température de fonctionnement | -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) |
| Statut RoHS | unknown |
| Manufacturer Series | C500 family / C505CA sub-family |
Guide de configuration des broches du SAF-C505CA-4EMCA tray / tape & reel (per source variants)
Configuration des broches du SAF-C505CA-4EMCA (boîtier tray / tape & reel (per source variants)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour SAF-C505CA-4EMCA.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
SAF-C505CA-4EMCA convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour SAF-C505CA-4EMCA — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- 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)
Notes de conception
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.
Informations de conformité
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.
