Texas Instruments AM1707DZKB4

Overview

AM1707DZKB4 from Texas Instruments is a 32-bit ARM926EJ-S™ microprocessor operating at 375 MHz (1.2 V core) or 456 MHz (1.3 V core), featuring 16 KB instruction cache, 16 KB data cache, 128 KB on-chip RAM, and integrated peripherals including 10/100 Mbps Ethernet MAC, USB 2.0 OTG, USB 1.1 OHCI host, three UARTs, two I²C, two SPI, three McASP audio ports, LCD controller, eHRPWM, eCAP, eQEP, and dual external memory interfaces (EMIFA/EMIFB). It targets industrial automation and portable data terminals requiring real-time OS support and rich peripheral integration.

For engineers reviewing the AM1707DZKB4 datasheet, AM1707DZKB4 pinout, AM1707DZKB4 application, or AM1707DZKB4 equivalent, key selection criteria include CPU frequency grade (375/456 MHz), 256-ball PBGA package with 1.0-mm pitch, 3.3-V I/O voltage, ARMv5TEJ instruction set compatibility, MMU-enabled memory management, and real-time debug support via Embedded ICE-RT™ and ETB.

Technical Context

The AM1707DZKB4 implements an ARM926EJ-S core with Harvard architecture, separate 16 KB instruction and data caches (four-way associative, VIVT), 8 KB vector table RAM, and 64 KB ROM. It integrates a Power/Sleep Controller (PSC) enabling clock gating across subsystems and supports little-endian operation with ARMv5TEJ instruction set including Jazelle® for Java acceleration.

Peripherals are connected via Advanced High-Performance Bus (AHB) and include EDMA3 with 32 independent channels, dual 64-bit general-purpose timers (one configurable as watchdog), programmable real-time unit subsystem (PRUSS) with two PRU cores, and memory protection units for secure resource partitioning between ARM and PRU hosts.

Key Specifications

Pinout & Package

AM1707DZKB4 is housed in a 256-ball Pb-free plastic ball grid array (PBGA) package with 1.0-mm ball pitch and 17.0 mm × 17.0 mm body size. Pin assignments follow TI's standardized ZKB footprint per SPRS637E Section 3.5 and 3.6.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ARM microprocessor applications.

Compared with AM1808BZKN, AM1707DZKB4 lacks hardware crypto engines but matches in pinout and peripheral count; versus AM3352BZCZ100, it trades raw CPU speed for broader memory interface flexibility and lower power at sub-500 MHz operation.

Availability

AM1707DZKB4 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 AM1707DZKB4 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The AM1707DZKB4 belongs to TI's Sitara™ ARM microprocessor family, designed specifically for cost-sensitive, real-time embedded applications requiring robust OS support, rich connectivity, and deterministic peripheral control without external co-processors.

FAQ

What is the maximum supported CPU frequency for AM1707DZKB4?

The AM1707DZKB4 supports two frequency grades: 375 MHz at 1.2 V core supply and 456 MHz at 1.3 V core supply. The actual operating frequency is determined by silicon revision and voltage rail stability. Both grades are production qualified per SPRS637E revision history, with 456 MHz requiring tighter CVDD regulation and thermal management. AM1707DZKB4 must be configured via PLL registers to match the applied core voltage.

Does AM1707DZKB4 include an integrated memory management unit (MMU)?

Yes, AM1707DZKB4 integrates a full ARMv5-compliant MMU within its ARM926EJ-S core, supporting section, large page, small page, and tiny page mappings with subpage permissions. This enables Linux kernel execution and process isolation. The MMU uses a unified TLB and hardware page table walks, and is configured via CP15 registers. AM1707DZKB4's MMU implementation is identical to that documented in the ARM926EJ-S Technical Reference Manual.

Can AM1707DZKB4 directly interface with NAND flash memory?

Yes, AM1707DZKB4 supports 8-bit and 16-bit NAND flash through its EMIFA interface, with built-in ECC engine for single-bit error correction and detection. The EMIFA NAND controller handles address/data multiplexing, command sequencing, and timing control per ONFI 1.0 specifications. AM1707DZKB4 requires no external NAND controller, reducing system complexity and board area versus microcontrollers lacking native NAND support.

What debugging interfaces does AM1707DZKB4 provide?

AM1707DZKB4 includes IEEE 1149.1 JTAG for boundary-scan and core debug, Embedded ICE-RT™ for real-time breakpoint and watchpoint control, and an Embedded Trace Buffer (ETB) with 4 KB memory for instruction and data trace capture. These interfaces are accessible via standard ARM debug probes. AM1707DZKB4 does not expose a trace port externally but routes ETM output internally to the ETB, enabling post-mortem analysis without external trace pods.

Is AM1707DZKB4 pin-compatible with other Sitara processors like AM1808?

AM1707DZKB4 shares the same 256-ball ZKB PBGA package and pinout with AM1808BZKN, enabling mechanical drop-in replacement. However, AM1808 adds security boot and crypto accelerators not present in AM1707DZKB4, so firmware and register-level initialization differ. Signal-level compatibility is confirmed per TI's device compatibility documentation, but users must validate power sequencing and reset behavior when substituting AM1707DZKB4 into AM1808 designs.