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Infineon Technologies SAB80C537-N
- Part No.:
- SAB80C537-N
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 84-LCC (J-Lead)
- Datasheet:
-
SAB80C537-N.pdf
- Description:
- IC MCU 8BIT ROMLESS 84PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,034
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Product details
Overview
SAB80C537-N from Siemens is an 8-bit CMOS single-chip microcontroller designed for external program memory systems, featuring a 12 MHz maximum operating frequency, 256 × 8 on-chip RAM, eight data pointers for external memory addressing, and a 8-bit A/D converter with 12 multiplexed inputs and programmable reference voltages - deployed in industrial motor control interfaces requiring deterministic real-time I/O handling.
For engineers reviewing the SAB80C537-N datasheet, SAB80C537-N pinout, SAB80C537-N application, or SAB80C537-N equivalent, key selection criteria include external ROM dependency, P-LCC-84 package compatibility, 16-bit compare/capture unit support, fail-safe provisions, and temperature range (0 to 70 °C) for embedded control environments.
Technical Context
The SAB80C537-N implements a superset of the SAB80C515 architecture with upward compatibility, delivering 750 ns instruction cycle time at 16 MHz and 1 µs at 12 MHz. It integrates a dedicated MUL/DIV unit (MDU) enabling fast 32-bit division and 16-bit multiplication, plus a 16-bit compare/capture unit (CCU) with up to 21 high-speed or PWM output channels.
It supports two full-duplex serial interfaces, four 16-bit timer/counters, and nine ports totaling 56 I/O lines plus 12 dedicated analog input lines for the A/D subsystem. The device lacks on-chip ROM - requiring external program memory - and uses Siemens ACMOS technology for low-power, high-density operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Superset of SAB80C515; fully upward compatible with SAB80C515 instruction set and memory map |
| Max Operating Frequency | 12 MHz - enables 1 µs instruction cycle time for deterministic timing-critical control loops |
| On-Chip RAM | 256 × 8 bytes - sufficient for stack, register banks, and real-time variable storage without external SRAM |
| A/D Converter | 8-bit resolution with 12 multiplexed inputs and programmable VAREF/VAGND references - supports sensor signal digitization in mixed-signal control systems |
| Compare/Capture Unit | 16-bit CCU with up to 21 PWM or high-speed output channels - enables precise motor phase timing and pulse-width modulation |
| External Memory Support | 64 Kbyte external program/data addressing via eight data pointers - required for code execution and large data buffers |
| Power Modes | Idle, power-down, and slow-down modes controlled via PE/SWD pin - reduces active current during standby without losing RAM state |
Pinout & Package
Package: P-LCC-84 (Plastic Leaded Chip Carrier, 84-pin, J-lead, surface-mount).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P4.0–P4.7 | Port 4 bidirectional I/O / Compare Channels 0–7 | Primary digital I/O with internal pull-ups; secondary function as CCU channel inputs/outputs for edge-triggered capture or PWM generation |
| PE/SWD | Power Enable / Start Watchdog | Low-level active input controlling entry into idle/power-down/slow-down modes; also enables/disables watchdog timer at reset |
| RESET | Active-low reset input | Single-machine-cycle low pulse resets CPU, peripherals, and registers; internal weak pull-up enables capacitor-based power-on reset |
| VAREF | Analog reference voltage input | Defines upper bound of A/D conversion range; allows ratiometric sensing with external sensors or precision voltage sources |
| VAGND | Analog ground reference | Separate ground return for A/D converter to minimize noise coupling from digital switching transients |
| P7.0–P7.7 | Unidirectional input port / A/D lower 8-bit analog inputs | Digital input only (no output drive); simultaneously serves as LSB inputs for 12-channel A/D multiplexer - enables concurrent digital + analog sampling |
Key Features
| Feature | Design Value |
|---|---|
| MUL/DIV Unit (MDU) | Hardware-accelerated 32-bit division and 16-bit multiplication - reduces firmware overhead in motion control math routines |
| 16-bit Compare/Capture Unit (CCU) | 21 configurable PWM or high-speed output channels - supports multi-phase motor commutation and servo timing |
| Fail-Safe Provisions | Dedicated watchdog timer, power-down mode lockout, and reset supervision - ensures safe shutdown under fault conditions |
| Extended Interrupt System | 14 vectors with 4 priority levels - enables prioritized response to encoder interrupts, A/D completion, and serial events |
| Two Serial Interfaces | Full-duplex UARTs - allow simultaneous host communication and fieldbus interface (e.g., RS-485 or proprietary protocol) |
Applications
| Industrial Motor Control | Programmable Logic Controller (PLC) I/O Module |
|---|---|
|
Use Scenario: Closed-loop speed and position control of 3-phase AC induction motors using encoder feedback and PWM-driven inverters. IC Role / Device Role / Timing Role: Central controller executing PID algorithms, managing A/D sampling of current/voltage sensors, and generating synchronized PWM outputs via CCU. Use Value: Deterministic 750 ns instruction cycle at 16 MHz ensures sub-microsecond jitter in PWM edge placement critical for torque ripple reduction. |
Use Scenario: Modular digital input/output expansion for DIN-rail mounted PLCs handling discrete sensor and actuator signals. IC Role / Device Role / Timing Role: Local intelligence node managing 56 I/O lines, performing debounce, level translation, and serial reporting to main CPU over UART. Use Value: Eight data pointers enable efficient buffering of 64 KB I/O status maps across multiple memory-mapped peripheral chips without software overhead. |
| Temperature-Controlled HVAC Actuator | Automated Test Equipment (ATE) Signal Generator |
|
Use Scenario: Compact thermostat module regulating damper position and fan speed based on thermistor and humidity sensor inputs. IC Role / Device Role / Timing Role: Mixed-signal processor acquiring analog sensor data via 12-channel A/D, computing control logic, and driving PWM-controlled actuators. Use Value: Programmable VAREF/VAGND allows calibration against reference sensors, improving accuracy to ±0.5% over 0–70 °C operating range. |
Use Scenario: Benchtop signal generator producing calibrated square, triangle, and pulse waveforms with adjustable duty cycle and frequency. IC Role / Device Role / Timing Role: Waveform synthesis engine using CCU for precise edge timing and MDU for real-time frequency scaling calculations. Use Value: Hardware 32-bit normalize/shift operations accelerate waveform parameter updates, enabling <10 µs reconfiguration latency between test steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications with external program memory support.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAB80C517-N | Includes 8 K × 8 factory mask-programmable ROM; identical core, CCU, and A/D features | Self-contained boot capability eliminates need for external EPROM/Flash; suited for fixed-function controllers | Select when firmware is finalized and volume production justifies mask ROM NRE cost |
| Infineon C515C | Same Siemens-derived architecture but no MDU or CCU; 16-bit timers only; no A/D converter | Limited to simpler timing and I/O tasks; requires external ADC and PWM ICs for sensor/motor control | Select only for legacy replacement where CCU/A/D are unused and cost sensitivity outweighs feature loss |
Compared with SAB80C537-N, the SAB80C517-N adds on-chip ROM at the cost of flexibility, while the C515C sacrifices CCU, MDU, and A/D - making SAB80C537-N the only option supporting integrated analog acquisition, hardware math acceleration, and high-resolution PWM in a single chip for external-memory designs.
Availability
SAB80C537-N is available at Aetrix Electronics and suitable for industrial motor control, PLC I/O modules, temperature-regulated HVAC actuators, and automated test equipment signal generators requiring stable component supply across extended lifecycle programs.
Supply support for SAB80C537-N includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Siemens Semiconductor Group (now Infineon Technologies) developed high-reliability microcontrollers for industrial automation, combining ACMOS process technology with robust real-time architectures.
The SAB80C5xx family targets deterministic embedded control applications demanding fail-safe operation, mixed-signal integration, and long-term availability - especially where external memory scalability and hardware-accelerated arithmetic are essential.
FAQ
Does SAB80C537-N include on-chip program memory?
No. The SAB80C537-N is explicitly designated for external ROM use and contains no internal program memory. Unlike the SAB80C517-N, it relies entirely on external EPROM or Flash for code storage, with 64 Kbyte external addressing capability enabled by eight data pointers.
What is the function of the PE/SWD pin?
The PE/SWD pin controls power-saving modes and watchdog initialization. A low level enables software entry into idle, power-down, or slow-down states; during reset, a low level disables the watchdog timer by default, while a high level starts it automatically after reset completion.
Can Port 7 be used for both digital input and A/D conversion simultaneously?
Yes. Port 7 pins (P7.0–P7.7) serve dual roles: they function as unidirectional digital inputs meeting standard TTL voltage thresholds, and concurrently provide the lower 8 bits of the 12-channel A/D multiplexer - enabling synchronized digital status and analog sensor sampling without pin reconfiguration.
Is the SAB80C537-N pin-compatible with the P-MQFP-100-2 package variant?
No. The SAB80C537-N is specified only for the P-LCC-84 package per ordering code Q67120-C452. The P-MQFP-100-2 variant (SAB80C537-M) has different pin count, layout, and signal assignments - requiring separate PCB design and footprint validation.
SAB80C537-N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 84-LCC (J-Lead)
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 12MHz
- Connectivity:
- EBI/EMI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 56
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 12x8b
- Oscillator Type:
- External
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
SAB80C537-N FAQ
1.How can I place an order for SAB80C537-N through Aetrix?
Please submit a Request for Quotation (RFQ) for SAB80C537-N on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SAB80C537-N reliable?
The price and inventory of SAB80C537-N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAB80C537-N is usually 5 days.
3.What payment methods are accepted for SAB80C537-N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAB80C537-N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAB80C537-N?
SAB80C537-N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAB80C537-N order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SAB80C537-N?
For technical support, including SAB80C537-N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAB80C537-N requirements.
6.How does Aetrix verify that SAB80C537-N is sourced from the original manufacturer or authorized distributors?
All SAB80C537-N products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SAB80C537-N meets industry standards.
7.What is the process for return or replacement of SAB80C537-N?
All SAB80C537-N units undergo pre-shipment inspection (PSI). If there is an issue with SAB80C537-N, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SAB80C537-N part is unused and in its original packaging.
Return procedure for SAB80C537-N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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