Microchip Technology ATDH40D160

Overview

ATDH40D160 from Atmel is a 160-pin Plastic Quad Flat Pack (PQFP) daughter board designed for the ATDH40M FPGA prototyping motherboard, enabling programming and evaluation of AT40K/AT40KAL FPGAs and AT94K FPSLIC devices in PQ160 package. It supports in-system programming (ISP), provides 128–130 user I/O pins depending on device variant, and interfaces via aligned mechanical docking with ATDH40M using dual-arrow alignment.

For engineers reviewing the ATDH40D160 datasheet, ATDH40D160 pinout, ATDH40D160 application, or ATDH40D160 equivalent, this board is essential for rapid validation of SRAM-based programmable system-level integration devices requiring PQ160 footprint compatibility, parallel-port-based configuration, and modular FPGA development workflows.

Technical Context

The ATDH40D160 is a passive, socketed daughterboard that mates mechanically and electrically with the ATDH40M motherboard to extend its support to PQ160-packaged AT40K/AT40KAL and AT94KAL devices. It routes all device signals-including CCLK, INIT, CON, D0, RESET, and up to 130 user I/Os-through a standardized 10-pin header interface to the motherboard's multiplexer and parallel port logic.

No active circuitry resides on ATDH40D160; it implements only signal pass-through, power distribution (5.0V or 3.3V selectable via ATDH40M SW2), and precise PQ160 land pattern alignment. Its design strictly follows Atmel's AT40K family pin-compatibility rules across package variants, ensuring consistent signal mapping for Slave Serial and Master Serial programming modes.

Key Specifications

Availability

ATDH40D160 is available at Aetrix Electronics and suitable for FPGA prototyping, SRAM-based PSLI evaluation, and AT94K FPSLIC development requiring stable component supply, legacy toolchain compatibility (IDS 5.0+), and modular hardware validation.

Supply support for ATDH40D160 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

Atmel Corporation (now part of Microchip Technology) was a leading designer of microcontrollers, programmable logic, and nonvolatile memory solutions, known for SRAM-based FPGAs and integrated FPSLIC architectures.

The ATDH40D160 belongs to Atmel's ATDH40M prototyping system product line, engineered specifically to accelerate evaluation and programming of AT40K/AT94K family devices in production-relevant PQ160 packaging.

FAQ

What is the primary function of the ATDH40D160 in the ATDH40M system?

The ATDH40D160 serves exclusively as a mechanical and electrical adapter that enables the ATDH40M motherboard to host and program PQ160-packaged AT40K/AT40KAL and AT94KAL devices. It provides no active logic or firmware - its role is to route signals (CCLK, INIT, CON, D0, RESET, and up to 130 I/Os) between the FPGA socket and the ATDH40M's configuration interface. The ATDH40D160 must be used with the ATDH40M to operate; it cannot function standalone.

Which specific FPGA devices are supported by the ATDH40D160?

The ATDH40D160 supports AT40K05/AT40K05AL, AT40K10/AT40K10AL, AT40K20/AT40K20AL, AT40K40/AT40K40AL, and AT94K05AL/AT94K10AL/AT94K40AL devices - but only when offered in the PQ160 package. Device compatibility is confirmed in Table 2 of the ATDH40M datasheet (Rev. 1402B), where "PQ160" row lists valid ordering codes (e.g., CQ suffix) and corresponding user I/O counts (128 or 130).

Does the ATDH40D160 include voltage regulation or level-shifting circuitry?

No. The ATDH40D160 contains no regulators, level shifters, or active components. It is a passive interposer board that relies entirely on the ATDH40M motherboard for power conditioning: VCC (3.3V or 5.0V) and GND are supplied from ATDH40M via the docking interface, with voltage selection controlled by SW2 on the motherboard. The ATDH40D160 simply routes these rails and signals to the PQ160 socket.

How is the ATDH40D160 physically installed on the ATDH40M motherboard?

The ATDH40D160 docks onto the ATDH40M motherboard by aligning two engraved arrows - one on the daughterboard and one on the motherboard - ensuring correct orientation and preventing misinsertion. As stated in the documentation, "The two boards will only fit one way." No screws or fasteners are required; retention is achieved via friction-fit header engagement and precise PCB edge alignment.

Can the ATDH40D160 be used to program AT17 configuration EEPROMs directly?

No. Programming of AT17 series EEPROMs is performed via the ATDH40M motherboard's dedicated DB25 parallel port connector (top-left corner), not through the ATDH40D160. The ATDH40D160 only routes FPGA signals. AT17 programming requires SW4=Down/SW5=Up configuration on ATDH40M and uses the separate AT17 socket (U1) on the motherboard - independent of any daughterboard presence.