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Texas Instruments AM1705CPTP3
- Part No.:
- AM1705CPTP3
- Manufacturer:
- Texas Instruments
- Category:
- Microprocessors
- Package:
- 176-LQFP Exposed Pad
- Datasheet:
-
AM1705CPTP3.pdf
- Description:
- IC MPU SITARA 375MHZ 176HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,414
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Product details
Overview
AM1705CPTP3 from Texas Instruments is a 375-MHz ARM926EJ-S™ microprocessor with 16KB instruction cache, 16KB data cache, 128KB on-chip RAM, and integrated peripherals including 10/100 Mbps Ethernet MAC (RMII), three UARTs (one with RTS/CTS), two McASPs, USB 2.0 OTG with PHY, and PRUSS dual-core subsystem - deployed in industrial automation and portable data terminals.
For engineers reviewing the AM1705CPTP3 datasheet, AM1705CPTP3 pinout, AM1705CPTP3 application, or AM1705CPTP3 equivalent, key selection criteria include ARM926EJ-S core frequency (375 MHz @ 1.2 V), 176-pin HLQFP package with 0.5-mm pitch, EMIFA/EMIFB memory interface support, and real-time I/O capability via eHRPWM/eCAP/eQEP modules.
Technical Context
The AM1705CPTP3 implements an ARMv5TEJ-compliant ARM926EJ-S core with MMU, separate 16KB I-cache and D-cache (4-way associative, 32-byte line), 8KB vector RAM, and 64KB ROM. It executes both 32-bit ARM and 16-bit Thumb instructions and supports Jazelle® for Java acceleration.
Its subsystem integrates EDMA3 with 32 independent DMA channels and 8 QDMA channels, dual 64-bit timers (one configurable as watchdog), three eHRPWM modules with dead-band generation, and a programmable PRUSS with two 32-bit RISC cores - each with 4KB instruction RAM and 512B data RAM - all managed under a unified PSC clock-gating domain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ARM926EJ-S 32-bit RISC CPU with Thumb® support, MMU, and Jazelle® Java acceleration |
| Operating Frequency | 375 MHz at 1.2 V core supply - enables deterministic real-time response in embedded Linux systems |
| On-Chip Memory | 128KB SRAM + 16KB I-cache + 16KB D-cache + 8KB vector RAM + 64KB ROM - supports boot, OS, and application code without external memory |
| External Interfaces | EMIFA (NOR/NAND/8-bit async) + EMIFB (16-bit SDRAM, 128 MB address space) - enables flexible memory expansion for HMI and control applications |
| Connectivity Peripherals | 10/100 Mbps EMAC (RMII), USB 2.0 OTG with integrated PHY, 2× I²C, 2× SPI, 3× UART (UART0 with RTS/CTS), MMC/SD - full-stack connectivity for industrial gateways |
| Real-Time I/O | 3× eHRPWM (6 single-edge/dual-edge outputs), 3× eCAP (capture or APWM), 2× eQEP - precise motor control and encoder feedback in motion systems |
| Programmable Subsystem | PRUSS with two independent 32-bit RISC cores, 4KB IRAM + 512B DRAM per core - offloads time-critical tasks from ARM core without OS intervention |
Pinout & Package
AM1705CPTP3 is housed in a 176-pin PowerPAD™ plastic quad flat pack (HLQFP-PTP), 24.00 mm × 24.00 mm body, 0.5-mm pin pitch, with exposed thermal pad (Pin 177) for enhanced thermal dissipation in industrial environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1–176 (e.g., Pin 1: AXR1[0]/GP4[0]) | Multiplexed peripheral I/O or GPIO | Each pin supports up to 4 functional modes (e.g., McASP serial data, PWM output, GPIO, or boot configuration); pin 111–116 carry RMII signals for 10/100 Ethernet PHY interface |
| Pin 137–138 (USB0_DP / USB0_DM) | Differential USB 2.0 data pair | Integrated full-speed USB transceiver - eliminates need for external PHY in OTG host/client designs |
| Pin 143–145 (OSCIN / OSCOUT) | Crystal oscillator input/output | Supports 24-MHz fundamental-mode crystal for system clock generation; internal PLL multiplies to 375 MHz |
| Pin 146 (RESET) | Active-low asynchronous reset | Resets ARM core, PRUSS, and all peripherals; synchronous deassertion required for reliable boot sequence |
| Pin 177 (Thermal Pad) | Ground-connected thermal slug | Must be soldered to PCB ground plane for thermal compliance - junction-to-board θJB = 12.5°C/W per datasheet SPRS657F |
Key Features
| Feature | Design Value |
|---|---|
| ARM926EJ-S with MMU | Enables full Linux kernel execution and memory protection - critical for secure, multi-process industrial firmware |
| PRUSS dual-core subsystem | Provides deterministic <100-ns I/O response - handles encoder counting, PWM synchronization, or custom protocol bridging independently of ARM |
| eHRPWM with dead-band | Generates complementary high-resolution PWM pairs with programmable delay - essential for isolated gate-driver control in motor inverters |
| EDMA3 with QDMA channels | Offloads high-bandwidth data movement (e.g., McASP audio buffers, EMAC packet DMA) - frees ARM core for application logic |
| EMAC + RMII interface | Direct connection to external 10/100 PHY with MDIO management - simplifies Ethernet-enabled HMI and PLC edge node design |
Applications
| Industrial PLC Controller | Portable Data Terminal |
|---|---|
|
Use Scenario: Compact, fanless controller managing I/O modules, motion axes, and HMI over EtherNet/IP. IC Role / Device Role / Timing Role: Main application processor executing real-time Linux, coordinating PRUSS for fieldbus timing, and driving eQEP/eHRPWM for servo control. Use Value: Single-chip integration of ARM processing, PRU real-time I/O, and EMAC reduces BOM cost and board area vs. MPU+FPGA solutions. |
Use Scenario: Rugged handheld device scanning barcodes, capturing signatures, and uploading data via Wi-Fi/Ethernet. IC Role / Device Role / Timing Role: Central processor running embedded Linux, interfacing with USB client (for PC sync), UART (for scanner), and McASP (for audio feedback). Use Value: On-chip 128KB RAM + 64KB ROM enables fast boot and local data buffering without external flash - improves offline operation resilience. |
| Home Automation Gateway | Test & Measurement Instrument |
|
Use Scenario: Hub aggregating Zigbee, Z-Wave, and BLE sensors, translating protocols, and exposing REST API over Ethernet. IC Role / Device Role / Timing Role: Application host for protocol stacks; USB OTG acts as debug/programming port; UART/SPI manage radio co-processors. Use Value: Dual I²C, triple UART, and USB OTG enable concurrent management of multiple wireless SoCs - eliminates external bridge ICs. |
Use Scenario: Portable oscilloscope or power analyzer acquiring analog signals, performing FFT, and displaying waveforms on LCD. IC Role / Device Role / Timing Role: Real-time data acquisition controller using McASP for high-speed ADC/DAC interface and eCAP for precise timestamping. Use Value: McASP with FIFO and eCAP's four-event timestamp capture provide sub-microsecond timing resolution - meets Class A measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ARM microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM1808CPTP3 | 456-MHz ARM926EJ-S, same package, adds hardware crypto accelerator and SATA interface | Better suited for encrypted data logging or storage-heavy applications; higher core voltage (1.3 V) increases power draw | Select when cryptographic offload or SATA-based local storage is required - not drop-in due to voltage and peripheral differences |
| AM3352BZCZ100 | ARM Cortex-A8 @ 1 GHz, 196-pin BGA, includes 3D graphics, PRU-ICSS (enhanced PRU), and DDR2/DDR3 support | Targets richer UI (Qt, Android), higher throughput networking, and advanced motion control - requires PCB redesign | Choose for next-generation designs needing >2× CPU performance and modern graphics - not pin-compatible or software-binary compatible |
Compared with AM1705CPTP3, AM1808CPTP3 offers higher clock speed and crypto acceleration but demands tighter power regulation, while AM3352BZCZ100 delivers significantly greater compute density and peripheral modernization at the cost of full hardware and software requalification.
Availability
AM1705CPTP3 is available at Aetrix Electronics and suitable for industrial automation, portable data terminals, and test & measurement equipment requiring stable component supply across extended product lifecycles.
Supply support for AM1705CPTP3 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 connectivity technologies with decades of industrial-grade product experience.
The AM1705CPTP3 belongs to TI's Sitara™ ARM processor family, designed specifically for cost-sensitive, low-power industrial and communications applications requiring real-time responsiveness, rich peripheral integration, and Linux-capable processing.
FAQ
What is the maximum operating frequency of the AM1705CPTP3 and its corresponding core voltage?
The AM1705CPTP3 operates at a maximum frequency of 375 MHz with a nominal core supply voltage of 1.2 V. This rating is specified in the "Recommended Operating Conditions" section of the SPRS657F datasheet and applies to commercial and industrial temperature grades. Exceeding 1.2 V may cause instability or violate absolute maximum ratings.
Does the AM1705CPTP3 include an integrated USB PHY, and which USB modes does it support?
Yes, the AM1705CPTP3 integrates a full-speed USB 2.0 OTG PHY on-die. It supports USB 2.0 full-speed (12 Mbps) client mode and full-speed/low-speed (1.5 Mbps) host mode via the USB0 port. The PHY is accessed through dedicated pins (USB0_DP/DM) and requires no external transceiver for basic OTG functionality.
How many independent PWM outputs does the AM1705CPTP3 support, and what precision features are available?
The AM1705CPTP3 supports up to six independent PWM outputs via its three eHRPWM modules. Each module provides 16-bit time-base counters, programmable period/frequency, dead-band insertion, and PWM chopping - enabling precise motor phase control and digital power supply modulation in industrial drives.
Can the PRUSS subsystem in the AM1705CPTP3 run independently of the ARM926EJ-S core?
Yes, the PRUSS subsystem in the AM1705CPTP3 consists of two autonomous 32-bit RISC cores with dedicated instruction and data RAM. It can execute real-time tasks - such as encoder counting, GPIO bit-banging, or custom protocol handling - without ARM intervention, and may be disabled via software to reduce power consumption.
What external memory interfaces does the AM1705CPTP3 provide, and what are their supported protocols?
The AM1705CPTP3 provides two external memory interfaces: EMIFA supports 8-bit NOR Flash, NAND Flash, and SRAM with asynchronous timing; EMIFB supports 16-bit SDRAM with up to 128 MB address space. Both interfaces are fully configurable via registers and require no external glue logic for standard devices.
AM1705CPTP3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 176-LQFP Exposed Pad
- Series:
- Sitara™
- Packaging:
- Tray
- Product Status:
- Obsolete
- Core Processor:
- ARM926EJ-S
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 375MHz
- Co-Processors/DSP:
- System Control; CP15
- RAM Controllers:
- SDRAM
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- -
- Ethernet:
- 10/100Mbps (1)
- SATA:
- -
- USB:
- USB 2.0 + PHY (1)
- Voltage - I/O:
- 1.8V, 3.3V
- Operating Temperature:
- 0°C ~ 90°C (TJ)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 176-HLQFP (24x24)
- Additional Interfaces:
- I2C, McASP, SPI, MMC/SD, UART
AM1705CPTP3 FAQ
1.How can I place an order for AM1705CPTP3 through Aetrix?
Please submit a Request for Quotation (RFQ) for AM1705CPTP3 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 AM1705CPTP3 reliable?
The price and inventory of AM1705CPTP3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AM1705CPTP3 is usually 5 days.
3.What payment methods are accepted for AM1705CPTP3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AM1705CPTP3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AM1705CPTP3?
AM1705CPTP3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AM1705CPTP3 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 AM1705CPTP3?
For technical support, including AM1705CPTP3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AM1705CPTP3 requirements.
6.How does Aetrix verify that AM1705CPTP3 is sourced from the original manufacturer or authorized distributors?
All AM1705CPTP3 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 AM1705CPTP3 meets industry standards.
7.What is the process for return or replacement of AM1705CPTP3?
All AM1705CPTP3 units undergo pre-shipment inspection (PSI). If there is an issue with AM1705CPTP3, 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 AM1705CPTP3 part is unused and in its original packaging.
Return procedure for AM1705CPTP3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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