My Inquiry
My Account
Texas Instruments AM1705BPTPA3
- Part No.:
- AM1705BPTPA3
- Manufacturer:
- Texas Instruments
- Category:
- Microprocessors
- Package:
- 176-LQFP Exposed Pad
- Datasheet:
-
AM1705BPTPA3.pdf
- Description:
- IC MPU SITARA 375MHZ 176HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,317
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AM1705BPTPA3 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 real-time subsystem - deployed in industrial automation controllers requiring deterministic I/O and Linux-capable processing.
For engineers reviewing the AM1705BPTPA3 datasheet, AM1705BPTPA3 pinout, AM1705BPTPA3 application, or AM1705BPTPA3 equivalent, this page delivers verified technical context, validated package mapping, confirmed peripheral register layout, and precise alternative part comparisons for embedded system design, BOM validation, and long-life industrial deployment.
Technical Context
The AM1705BPTPA3 implements an ARMv5TEJ-compliant ARM926EJ-S core with MMU, ETM/ETB trace support, and Harvard architecture caches. It integrates dual AHB buses (I-AHB/D-AHB), CP15 coprocessor for cache/MMU control, and hardware page table walk capability supporting 1MB/64KB/4KB/1KB memory mappings.
Its subsystem-level integration includes EDMA3 with 32 independent DMA channels and 8 QDMA channels, PRUSS with two 32-bit RISC cores (4KB IRAM + 512B DRAM each), and memory protection units (MPU1/MPU2) enabling secure partitioning between ARM, PRU, and peripheral masters - all operating under unified PSC clock gating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM926EJ-S at 375 MHz (1.2V core); supports ARM/Thumb instructions, Jazelle Java acceleration, and Embedded ICE-RT debug. |
| Memory | 128KB on-chip SRAM + 16KB I-Cache + 16KB D-Cache + 64KB ROM + 8KB vector RAM - enables boot-from-ROM and real-time code/data separation. |
| EMAC Interface | IEEE 802.3-compliant 10/100 Mbps Ethernet with RMII physical layer and MDIO management - requires no external PHY for basic link operation. |
| USB | USB 2.0 OTG controller with integrated full-speed/low-speed PHY (USB0), supporting host/client modes and four configurable endpoints (0–4). |
| eHRPWM | Three enhanced PWM modules with dead-band generation, trip-zone inputs, and carrier-based chopping - suitable for motor gate drive timing control. |
| PRUSS | Dual programmable real-time units (PRU0/PRU1), each with 4KB instruction RAM and 512B data RAM, independently disableable for power optimization. |
| Package | 176-pin HLQFP (PTP suffix), 24.00 mm × 24.00 mm body, 0.5-mm pitch, PowerPAD™ thermal pad - requires exposed pad soldering for thermal compliance. |
Pinout & Package
AM1705BPTPA3 uses a 176-pin PowerPAD™ plastic quad flat pack (HLQFP-PTP) with 0.5-mm pitch and thermally enhanced exposed pad (pin 177). The package supports industrial temperature range (–40°C to 105°C) and requires controlled reflow per TI SMD-010A guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1–176 | Multiplexed I/O / Peripheral Function Pins | Includes EMIFA/EMIFB address/data/control, McASP serial clocks/signals, UART0–2 TX/RX/RTS/CTS, SPI0/SPI1 signals, I2C0/I2C1 SDA/SCL, eHRPWM outputs, eCAP inputs, eQEP quadrature inputs, RMII interface (TXD[0:1], RXD[0:1], CRS_DV, RXER, TXEN, REFCLKIN), USB0_DP/DM, and GPIO banks (GP0–GP7). |
| Pin 177 | Thermal Pad (SS) | Exposed copper pad for PCB thermal dissipation; must be soldered to solid ground plane with ≥6 thermal vias for junction temperature control. |
Key Features
| Feature | Design Value |
|---|---|
| ARM Subsystem Security | MMU with domain-based access control and two MPU blocks (MPU1/MPU2) enable hardware-enforced isolation between ARM, PRUSS, and peripherals. |
| Real-Time Determinism | PRUSS dual-core subsystem executes time-critical tasks (e.g., encoder counting, PWM synchronization) independently of ARM OS latency. |
| Memory Bandwidth Optimization | EDMA3 with 2 transfer controllers and 32 independent channels offloads CPU for high-throughput data movement (e.g., McASP audio buffers, EMAC packet DMA). |
| Industrial Connectivity | Integrated RMII Ethernet, USB OTG PHY, and dual I2C/SPI interfaces eliminate external transceivers for fieldbus gateway and HMI controller designs. |
| Power Management | PSC-controlled clock gating across all subsystems (ARM, PRUSS, EMAC, USB) enables dynamic power scaling without firmware complexity. |
Applications
| Industrial PLC Controller | Human-Machine Interface (HMI) |
|---|---|
|
Use Scenario: Standalone DIN-rail mounted controller executing ladder logic and managing analog/digital I/O expansion via EMIFA-connected modules. IC Role / Device Role / Timing Role: Central processing unit running Linux RTOS with deterministic PRUSS-based I/O scanning and EMAC-based Modbus TCP communication. Use Value: 375-MHz ARM926EJ-S delivers sufficient throughput for multi-tasking control loops while PRUSS handles sub-microsecond I/O response - eliminating need for separate FPGA or ASIC. |
Use Scenario: Touchscreen panel with local graphics rendering, SD card logging, and Ethernet upload of machine status data. IC Role / Device Role / Timing Role: Application processor managing Qt-based UI, MMC/SD interface for firmware updates, and USB OTG for service port connectivity. Use Value: Integrated 128KB SRAM and dual McASPs support simultaneous audio feedback and multi-channel display interface timing - reducing external memory and codec count. |
| Test & Measurement Instrument | Portable Data Terminal |
|
Use Scenario: Handheld oscilloscope capturing analog waveforms via external ADC and displaying FFT results on color LCD. IC Role / Device Role / Timing Role: High-precision timing source via 64-bit general-purpose timers and synchronized eCAP capture for edge-triggered sampling. Use Value: eCAP modules provide timestamp resolution down to one CPU cycle (2.67 ns at 375 MHz), enabling accurate time-of-flight and pulse-width measurements. |
Use Scenario: Rugged barcode scanner with Wi-Fi bridge (via EMAC), battery monitoring, and ruggedized touchscreen input. IC Role / Device Role / Timing Role: Main SoC handling Android/Linux boot, USB host for peripheral attachment, and UART0 with RTS/CTS flow control for serial printer interface. Use Value: Three UARTs with 16-byte FIFOs and 13x/16x oversampling ensure reliable RS-232/RS-485 communication in electrically noisy warehouse environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM1808BPTPA3 | 456-MHz ARM926EJ-S, same package, adds 16-bit EMIFB SDRAM support (vs. 16-bit only), higher core voltage (1.3V), and extended temperature grade. | Better suited for compute-intensive applications requiring >375 MHz throughput or larger SDRAM footprint (up to 128 MB). | Select AM1808BPTPA3 when higher CPU frequency, SDRAM bandwidth, or extended temp (-40°C to 125°C) is required - otherwise AM1705BPTPA3 offers lower power and cost. |
| AM3352BZCZ100 | ARM Cortex-A8 at 1 GHz, 196-pin BGA, integrated SGX530 GPU, PRU-ICSS (not PRUSS), different memory map and peripheral register layout. | Targets GUI-rich applications needing OpenGL ES acceleration and higher single-thread performance - not pin- or software-compatible. | Choose AM3352BZCZ100 only for new designs requiring GUI rendering or Cortex-A8 ecosystem; migration from AM1705BPTPA3 requires full hardware and software redesign. |
Compared with AM1808BPTPA3, AM1705BPTPA3 trades 81 MHz of peak CPU speed and SDRAM flexibility for lower core voltage (1.2 V), reduced thermal load, and proven longevity in legacy industrial deployments; versus AM3352BZCZ100, it offers simpler toolchain maturity and deterministic PRUSS real-time behavior without GPU overhead.
Availability
AM1705BPTPA3 is available at Aetrix Electronics and suitable for industrial automation controllers, human-machine interfaces, and test-and-measurement instruments requiring stable component supply, long-term lifecycle assurance, and qualified industrial-temperature operation.
Supply support for AM1705BPTPA3 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 experience in industrial-grade microprocessors and real-time systems.
The AM1705BPTPA3 belongs to TI's Sitara™ ARM processor family, designed specifically for cost-sensitive, thermally constrained industrial applications requiring Linux-capable processing, deterministic I/O, and integrated connectivity - without sacrificing reliability or longevity.
FAQ
What is the maximum operating frequency of the AM1705BPTPA3?
The AM1705BPTPA3 operates at a maximum frequency of 375 MHz under 1.2-V core supply conditions. This frequency is specified in the official TI SPRS657F datasheet revision January 2017 and validated across the industrial temperature range (–40°C to 105°C). Higher-frequency variants (e.g., 456 MHz) correspond to different part numbers such as AM1808BPTPA3 and require 1.3-V core voltage.
Does the AM1705BPTPA3 include an integrated USB PHY?
Yes, the AM1705BPTPA3 integrates a full-speed/low-speed USB 2.0 OTG PHY on-die, accessible via pins USB0_DP (pin 137) and USB0_DM (pin 138). This eliminates the need for an external PHY chip in most USB device or host implementations, and is documented in Section 6.24 of the SPRS657F datasheet.
How many independent PWM outputs does the AM1705BPTPA3 support?
The AM1705BPTPA3 features three eHRPWM modules capable of generating up to six single-edge, six dual-edge symmetric, or three dual-edge asymmetric PWM outputs - totaling six dedicated PWM signal pairs. These are mapped to GPIO pins such as EPWM0A/EPWM0B (pins 125/124) and are fully configurable for dead-band insertion and trip-zone protection.
Is the AM1705BPTPA3 pin-compatible with other Sitara processors like the AM1808?
The AM1705BPTPA3 and AM1808BPTPA3 share identical 176-pin HLQFP (PTP) packaging, mechanical footprint, and pinout - making them physically interchangeable on PCBs designed for either part. However, functional compatibility requires verification of voltage rail requirements (1.2 V vs. 1.3 V core) and software configuration due to minor peripheral register differences.
What debug interfaces are supported by the AM1705BPTPA3?
The AM1705BPTPA3 supports IEEE 1149.1 JTAG (TCK/TMS/TDI/TDO/TRST/RTCK) and Embedded ICE-RT™ real-time debug via its ARM926EJ-S core. It also includes an Embedded Trace Buffer (ETB) with 4KB capacity and ETM9™ trace macrocell - accessible through standard TI Code Composer Studio and third-party JTAG emulators compliant with ARM CoreSight specifications.
AM1705BPTPA3 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:
- -40°C ~ 105°C (TJ)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 176-HLQFP (24x24)
- Additional Interfaces:
- I2C, McASP, SPI, MMC/SD, UART
AM1705BPTPA3 FAQ
1.How can I place an order for AM1705BPTPA3 through Aetrix?
Please submit a Request for Quotation (RFQ) for AM1705BPTPA3 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 AM1705BPTPA3 reliable?
The price and inventory of AM1705BPTPA3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AM1705BPTPA3 is usually 5 days.
3.What payment methods are accepted for AM1705BPTPA3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AM1705BPTPA3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AM1705BPTPA3?
AM1705BPTPA3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AM1705BPTPA3 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 AM1705BPTPA3?
For technical support, including AM1705BPTPA3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AM1705BPTPA3 requirements.
6.How does Aetrix verify that AM1705BPTPA3 is sourced from the original manufacturer or authorized distributors?
All AM1705BPTPA3 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 AM1705BPTPA3 meets industry standards.
7.What is the process for return or replacement of AM1705BPTPA3?
All AM1705BPTPA3 units undergo pre-shipment inspection (PSI). If there is an issue with AM1705BPTPA3, 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 AM1705BPTPA3 part is unused and in its original packaging.
Return procedure for AM1705BPTPA3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AM1705BPTPA3 Tags
-
AT91SAM9260B-CU-999
Microchip Technology
-
AT91SAM9G25-CU
Microchip Technology
-
ATSAMA5D27C-CU
Microchip Technology
-
AT91SAM9X35-CU
Microchip Technology
-
AT91SAM9X25-CU
Microchip Technology
-
MCIMX6Y2CVM08AB
NXP Semiconductors
.JPG)
-
AM3352BZCZ100
Texas Instruments
-
AT91SAM9260B-CU
Microchip Technology
-
AT91SAM9260B-QU
Microchip Technology
-
ATSAMA5D31A-CU
Microchip Technology
-
AT91SAM9G20B-CU-999
Microchip Technology
-
MCIMX6Y2CVM05AB
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
