Renesas QB-48GA-EA-05T

Overview

QB-48GA-EA-05T from Renesas Electronics is an exchange adapter designed for in-circuit emulation of the 78K0R/KC3-L (USB) microcontroller family, specifically supporting μPD78F1022–78F1024 in 48-pin GA package. It provides pin conversion between the QB-78F1026 emulator's YQ connector and the target system's 48-pin NQ connector, enabling debug signal routing at 3.0–3.6 V USB emulation voltage with mechanical height adjustment compatibility via QB-48GA-YS-01T space adapter.

For engineers reviewing the QB-48GA-EA-05T datasheet, QB-48GA-EA-05T pinout, QB-48GA-EA-05T application, or QB-48GA-EA-05T equivalent, this adapter is essential for establishing reliable physical interface alignment during hardware-assisted debugging of Renesas 78K0R-based embedded systems using IECUBE development tools.

Technical Context

The QB-48GA-EA-05T serves exclusively as a passive mechanical and electrical interface bridge - it contains no active circuitry, ICs, or power regulation. Its function is strictly to remap pin assignments between the QB-78F1026 emulator's YQ connector (female, 80-pin) and the target board's 48-pin NQ connector (male), preserving signal integrity for trace, break, clock, and power lines required by the 78K0R/KC3-L (USB) debug architecture.

It is used only in conjunction with QB-48GA-YQ-01T (YQ connector), QB-48GA-NQ-01T (target connector), and optionally QB-48GA-YS-01T (space adapter). No firmware, configuration, or voltage translation is performed; all signals pass through with 1:1 mapping per Renesas' documented pin conversion table for the 48GA package.

Key Specifications

Availability

QB-48GA-EA-05T is available at Aetrix Electronics and suitable for embedded microcontroller development, production test validation, and firmware bring-up requiring stable component supply for Renesas 78K0R-based USB-enabled control systems.

Supply support for QB-48GA-EA-05T 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

Renesas Electronics Corporation is a global semiconductor manufacturer headquartered in Japan, specializing in microcontrollers, analog & power devices, and advanced SoCs for automotive, industrial, and IoT applications.

QB-48GA-EA-05T belongs to Renesas' IECUBE in-circuit emulator accessory product line, engineered to enable precise, low-risk hardware debugging of 78K0R-series MCUs during early-stage firmware development and system integration.

FAQ

What is the primary function of the QB-48GA-EA-05T?

The QB-48GA-EA-05T is a passive exchange adapter that performs physical pin conversion between the QB-78F1026 emulator's YQ connector and the target system's 48-pin NQ connector. It enables correct signal routing for JTAG/ICE debugging of 78K0R/KC3-L (USB) microcontrollers without modifying PCB layout or adding active circuitry. The QB-48GA-EA-05T ensures mechanical and electrical compatibility within the full IECUBE debug chain.

Which Renesas microcontrollers does the QB-48GA-EA-05T support?

The QB-48GA-EA-05T supports the 78K0R/KC3-L (USB) microcontroller family in 48-pin GA package, specifically μPD78F1022, 78F1023, and 78F1024. It is not compatible with KE3-L variants or other package types (e.g., 48K8 or 64-pin variants), as confirmed by Table 1-3 in the QB-78F1026 User's Manual. Each supported device requires matching YQ and NQ connectors alongside the QB-48GA-EA-05T.

Does the QB-48GA-EA-05T require power or configuration?

No, the QB-48GA-EA-05T is a fully passive adapter with no internal circuitry, power input, or configuration options. It contains only precision-machined contacts and insulated traces to route debug and power signals between connectors. All functionality relies entirely on correct mechanical mating with QB-48GA-YQ-01T and QB-48GA-NQ-01T - no drivers, firmware, or setup is associated with the QB-48GA-EA-05T itself.

Can the QB-48GA-EA-05T be used without the QB-48GA-YS-01T space adapter?

Yes, the QB-48GA-EA-05T can be used without the QB-48GA-YS-01T space adapter, but only if the height offset between the QB-78F1026's YQ connector and the target board's NQ connector falls within its fixed mechanical tolerance. The QB-48GA-YS-01T (adjustable 0–30 mm) is optional but recommended to ensure reliable contact pressure and prevent misalignment-induced signal faults during extended debug sessions involving the QB-48GA-EA-05T.

Is the QB-48GA-EA-05T RoHS compliant and suitable for industrial use?

Yes, the QB-48GA-EA-05T complies with EU RoHS Directive requirements as part of Renesas' standard environmental compliance program, and is rated for industrial embedded development use per Renesas' "Standard" quality grade classification. It is intended for computers, test equipment, industrial robots, and office systems - not for automotive, medical, or aerospace applications unless separately qualified by Renesas.