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Texas Instruments SM320C32PCMM50EP
- Part No.:
- SM320C32PCMM50EP
- Manufacturer:
- Texas Instruments
- Category:
- DSP (Digital Signal Processors)
- Package:
- 144-BQFP
- Datasheet:
-
SM320C32PCMM50EP.pdf
- Description:
- IC DGTL SIGNAL PROCESSOR 144-QFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SM320C32PCMM50EP from Texas Instruments is a radiation-tolerant, high-performance 32-bit floating-point digital signal processor (DSP) designed for aerospace and defense applications requiring operation from −55°C to 125°C. It delivers 50 MFLOPS at 50 MHz with 40-ns instruction cycle time, features two 256 × 32-bit on-chip RAM blocks, and supports flexible external memory interfacing up to 32-bit data width - enabling real-time radar signal processing in spaceborne avionics systems.
For engineers reviewing the SM320C32PCMM50EP datasheet, SM320C32PCMM50EP pinout, SM320C32PCMM50EP application, or SM320C32PCMM50EP equivalent, key selection considerations include its extended-temperature EP-grade qualification, dual-channel DMA with configurable priorities, relocatable interrupt vector table, and PRGW-configurable 16-/32-bit program fetch capability for heterogeneous memory architectures.
Technical Context
The SM320C32PCMM50EP implements a hardware-accelerated DSP architecture with parallel ALU and multiplier execution in a single cycle, eight extended-precision registers, and two auxiliary register arithmetic units (ARAUs) supporting zero-overhead loops and block-repeat operations. Its CPU executes 32-bit instructions with 24-bit addressing and supports both 16-/32-bit integer and 32-/40-bit floating-point arithmetic.
Its external memory interface uses three independent strobe groups (STRB0, STRB1, IOSTRB), each configurable for 8-/16-/32-bit physical memory width and data type size - enabling mixed-width memory subsystems without glue logic. The PRGW pin selects 32-bit or dual-16-bit program fetch mode, and HOLD/HOLDA signals support multiprocessor bus arbitration across all strobes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency | 50 MHz - enables 40-ns instruction cycle time for deterministic real-time signal processing in hardened embedded control loops. |
| Floating-Point Performance | 50 MFLOPS - sufficient for real-time FFT, FIR filtering, and matrix operations in onboard telemetry processing. |
| On-Chip RAM | 2 × 256 × 32-bit single-cycle dual-access blocks - supports simultaneous instruction fetch and data access without pipeline stalls. |
| External Bus Interface | 24-bit address / 32-bit data with STRB0/STRB1/IOSTRB - allows zero-glue interfacing to multiple memory banks and peripherals with independent wait-state control. |
| Temperature Range | −55°C to 125°C case temperature - qualified per JEDEC standards including HAST, temperature cycling, and electromigration for mission-critical deployment. |
| Power Supply | 5 V ± 5% (DVDD, VDDL) - requires separate analog/digital ground planes (CVSS, DVSS, IVSS) to maintain signal integrity in high-noise environments. |
| Package | 144-pin plastic quad flatpack (PCM) - surface-mount compatible with standard reflow profiles for high-reliability PCB assembly. |
Pinout & Package
SM320C32PCMM50EP is housed in a 144-pin plastic quad flatpack (PCM) package with exposed thermal pad and 0.5-mm lead pitch. Pin functions are fully defined per TI SGUS038 datasheet, including dedicated strobe groups, dual DMA channels, and emulation/debug pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D31–D0 | 32-bit bidirectional data bus | Supports byte-, word-, or long-word transfers; high-impedance during HOLD/RESET/SHZ for clean bus sharing. |
| A23–A0 | 24-bit unidirectional address bus | Directly addresses up to 16 MB of external memory; A0–A2 used as address bits or byte enables depending on STRBx configuration. |
| STRB0_B3/A−1 to STRB0_B0 | Strobe group 0 control signals | Configurable as byte enables (32-bit mode) or address bits (8-/16-bit mode); enables independent timing control per memory region. |
| STRB1_B3/A−1 to STRB1_B0 | Strobe group 1 control signals | Independent from STRB0 - allows concurrent access to two distinct data memory banks with different timing parameters. |
| IOSTRB | I/O peripheral strobe | Dedicated 32-bit strobe with slower timing for interfacing to legacy or low-speed peripherals without impacting main memory performance. |
| PRGW | Program memory width select | Hardware-configured boot-time setting that determines whether instructions are fetched as one 32-bit word (PRGW = low) or two 16-bit words (PRGW = high). |
| HOLD / HOLDA | Multiprocessor bus arbitration | Enables shared external memory access across multiple C32 processors; HOLDA confirms high-Z state before bus handoff. |
| EMU0–EMU3 | Emulation interface | Reserved for JTAG-like debugging; requires 18–22 kΩ pull-up resistors to DVDD for stable operation during test. |
Key Features
| Feature | Design Value |
|---|---|
| Two-channel DMA coprocessor | Configurable priority (CPU/DMA/rotating) enables concurrent background data movement while CPU executes control algorithms. |
| Relocatable interrupt vector table | Starts on 256-word boundary - allows dynamic placement in on-chip RAM or protected external memory for secure firmware updates. |
| Flexible bootloader | Supports serial port, EPROM, and handshaking-based non-volatile memory loading - eliminates need for external boot ROM in compact designs. |
| Edge- or level-triggered interrupts | Reduces external logic complexity by allowing direct connection to sensors, encoders, or discrete I/O without external edge-detection circuitry. |
| Low-power modes (IDLE2/LOPOWER) | IDLE2 halts CPU while preserving register/state; LOPOWER reduces clock rate by factor of 16 - extends battery life in intermittent-sensing applications. |
Applications
| Radar Signal Processing | Avionics Flight Control |
|---|---|
|
Use Scenario: Real-time pulse-Doppler radar processing in satellite-based Earth observation systems. IC Role / Device Role / Timing Role: Primary floating-point compute engine executing FFTs, CFAR detection, and beamforming algorithms with deterministic 40-ns instruction latency. Use Value: 50 MFLOPS performance and dual-access RAM enable full-frame processing within frame sync intervals without external co-processors. |
Use Scenario: Fault-tolerant flight control computer in military UAVs operating across −55°C to 125°C ambient. IC Role / Device Role / Timing Role: Core controller managing sensor fusion (IMU/GPS), actuator command generation, and health monitoring with guaranteed interrupt response. Use Value: Extended-temperature qualification and HOLD/HOLDA bus arbitration allow integration into redundant dual-CPU architectures with synchronized state recovery. |
| Satellite Telemetry Compression | Electronic Warfare Front-End |
|
Use Scenario: Onboard compression of scientific instrument data prior to downlink in deep-space probes. IC Role / Device Role / Timing Role: Dedicated DSP handling Huffman coding, quantization, and packet framing using DMA-driven memory-mapped peripherals. Use Value: Two 256-word RAM blocks and relocatable vector table permit isolated, tamper-resistant firmware partitions for compression and security modules. |
Use Scenario: Wideband RF signal digitization and real-time jamming waveform synthesis in airborne EW pods. IC Role / Device Role / Timing Role: High-throughput data mover interfacing ADC/DAC via STRB0/STRB1 with independent timing for analog front-end synchronization. Use Value: Configurable 8-/16-/32-bit strobes eliminate level shifters when connecting to mixed-width memory and FPGA-based signal conditioning logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-reliability floating-point DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SM320C32PCMM60EP | 60 MHz operation (33-ns cycle), 60 MFLOPS, same package and pinout | Higher throughput required for multi-channel SAR processing or real-time spectral analysis | Select when algorithm latency budget permits higher clock frequency and power envelope allows +20% supply current. |
| TMS320C32PGEA50 | Commercial-grade (0°C to 70°C), same 50 MHz/50 MFLOPS spec, 144-pin LQFP | Ground-based test equipment or non-mission-critical prototyping where radiation tolerance is not required | Use for cost-sensitive development platforms; not suitable for flight hardware due to unqualified temperature and reliability testing. |
Compared with SM320C32PCMM60EP, the SM320C32PCMM50EP trades 10 MHz clock speed for lower power and thermal load in constrained SWaP-C environments; compared with TMS320C32PGEA50, it adds full MIL-PRF-38535 Class V qualification, extended temperature support, and enhanced DMS lifecycle management - essential for flight-certified systems.
Availability
SM320C32PCMM50EP is available at Aetrix Electronics and suitable for aerospace telemetry systems, radiation-hardened motor controllers, and defense-grade radar subsystems requiring stable component supply across extended product lifecycles.
Supply support for SM320C32PCMM50EP 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and aerospace markets.
The SM320C32PCMM50EP belongs to TI's enhanced-performance implanted CMOS (EPIC™) DSP family, engineered specifically for mission-critical embedded signal processing where deterministic timing, radiation tolerance, and extended-temperature operation are mandatory.
FAQ
What is the maximum operating temperature specification for the SM320C32PCMM50EP?
The SM320C32PCMM50EP is rated for operation from −55°C to 125°C case temperature, verified per JEDEC qualification standards including biased 85/85 testing, temperature cycling, and electromigration analysis. This extended range ensures reliable function in spacecraft thermal vacuums and jet engine-mounted avionics bays where passive cooling is unavailable. The SM320C32PCMM50EP maintains full 50 MFLOPS performance across this entire range without derating.
Does the SM320C32PCMM50EP support pin-compatible upgrades from earlier C3x series devices?
The SM320C32PCMM50EP is object-code compatible with SMJ320C30 and SMJ320C31 processors but is not pin-compatible with those predecessors due to expanded peripheral set and strobe signal count. Its 144-pin PCM footprint differs from the 132-pin C30/C31 packages, and the STRB0/STRB1/IOSTRB signal allocation requires updated PCB layout. However, software migration is straightforward due to identical instruction set architecture and memory-mapped peripheral register mapping.
How does the PRGW pin affect boot behavior in the SM320C32PCMM50EP?
The PRGW pin sets the program memory width at reset: logic low configures 32-bit-wide instruction fetches, while logic high enables dual 16-bit fetches for compatibility with 16-bit EPROMs or flash devices. This setting directly loads the STRB0 and STRB1 bus-control registers, determining how address bits A0–A2 are interpreted during program execution. The SM320C32PCMM50EP retains this configuration throughout operation unless explicitly modified via software writes to the strobe control registers.
Can the SM320C32PCMM50EP interface directly to 8-bit external memory without glue logic?
Yes - the SM320C32PCMM50EP's STRB0 and STRB1 strobes support 8-bit-wide external memory natively. In this mode, STRBx_B2/A−2 and STRBx_B3/A−1 function as address bits A0 and A1, STRBx_B0 acts as chip-select, and STRBx_B1 is unused. The SM320C32PCMM50EP automatically handles byte alignment and generates appropriate strobe timing, eliminating external address latches or logic gates required by general-purpose microcontrollers.
What debug capabilities are available on the SM320C32PCMM50EP?
The SM320C32PCMM50EP provides four dedicated emulation pins (EMU0–EMU3) supporting real-time instruction trace, breakpoint insertion, and register visibility via TI's XDS510-class emulators. EMU3 operates as an open-drain output with internal pull-down, while EMU0–EMU2 require external 18–22 kΩ pull-ups to DVDD. These signals enable non-intrusive debugging without affecting real-time performance - critical for validating timing-critical control loops in the SM320C32PCMM50EP's target applications.
SM320C32PCMM50EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TMS320C3x
- Package/Case:
- 144-BQFP
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Type:
- Floating Point
- Interface:
- Serial Port
- Clock Rate:
- 50MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 2.25kB
- Voltage - I/O:
- 5.00V
- Voltage - Core:
- 5.00V
- Operating Temperature:
- -55°C ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-QFP (28x28)
SM320C32PCMM50EP FAQ
1.How can I place an order for SM320C32PCMM50EP through Aetrix?
Please submit a Request for Quotation (RFQ) for SM320C32PCMM50EP 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 SM320C32PCMM50EP reliable?
The price and inventory of SM320C32PCMM50EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM320C32PCMM50EP is usually 5 days.
3.What payment methods are accepted for SM320C32PCMM50EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM320C32PCMM50EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM320C32PCMM50EP?
SM320C32PCMM50EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM320C32PCMM50EP 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 SM320C32PCMM50EP?
For technical support, including SM320C32PCMM50EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM320C32PCMM50EP requirements.
6.How does Aetrix verify that SM320C32PCMM50EP is sourced from the original manufacturer or authorized distributors?
All SM320C32PCMM50EP 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 SM320C32PCMM50EP meets industry standards.
7.What is the process for return or replacement of SM320C32PCMM50EP?
All SM320C32PCMM50EP units undergo pre-shipment inspection (PSI). If there is an issue with SM320C32PCMM50EP, 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 SM320C32PCMM50EP part is unused and in its original packaging.
Return procedure for SM320C32PCMM50EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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