Renesas QB-38SP-EA-01T

Overview

QB-38SP-EA-01T from Renesas Electronics is an exchange adapter designed for the QB-RL78I1A in-circuit emulator, enabling physical pin conversion between the YQ connector and the 38-pin SP (38SP) target device package. It supports RL78/I1A microcontroller emulation with precise signal routing, operates within 0–40°C ambient, and interfaces via standard FPC-based high-characteristic emulation probe connections.

For engineers reviewing the QB-38SP-EA-01T datasheet, QB-38SP-EA-01T pinout, QB-38SP-EA-01T application, or QB-38SP-EA-01T equivalent, this adapter is essential for establishing reliable debug connectivity between the QB-RL78I1A emulator and 38-pin surface-mount RL78/I1A target systems - particularly during hardware bring-up, firmware validation, and timing-critical trace analysis.

Technical Context

The QB-38SP-EA-01T serves exclusively as a passive mechanical and electrical interface bridge: it maps the QB-38SP-YQ-01T YQ connector pinout to the QB-38SP-NQ-01T target connector footprint for the RL78/I1A 38SP package. No active circuitry, voltage translation, or signal conditioning is integrated.

All 38 signal paths are direct, unmultiplexed, and impedance-unmanaged - preserving signal integrity only within the constraints of the FPC probe assembly and target board layout. It requires use with the QB-38SP-YQ-01T, QB-38SP-NQ-01T, and QB-80-EP-01T emulation probe to complete the debug chain.

Key Specifications

Availability

QB-38SP-EA-01T is available at Aetrix Electronics and suitable for RL78/I1A-based automotive body control modules, industrial sensor nodes, and consumer appliance MCU development requiring stable component supply for production-grade debug infrastructure.

Supply support for QB-38SP-EA-01T 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT applications.

QB-38SP-EA-01T belongs to the IECUBE™ in-circuit emulator accessory product line, engineered specifically to enable flexible, low-risk physical interfacing between Renesas' high-performance emulators and diverse RL78-family target packages.

FAQ

What is the primary function of the QB-38SP-EA-01T?

The QB-38SP-EA-01T is a passive exchange adapter that physically converts the QB-38SP-YQ-01T YQ connector output to match the QB-38SP-NQ-01T target connector footprint for the RL78/I1A 38-pin SP package. It enables secure, repeatable connection between the QB-RL78I1A emulator and the target board without modifying PCB layout or using custom cables. The QB-38SP-EA-01T contains no active components and performs no signal processing.

Is QB-38SP-EA-01T compatible with other RL78 devices beyond the I1A series?

No - QB-38SP-EA-01T is explicitly designated for the RL78/I1A 38SP package per Table 1-3 of the QB-RL78I1A User's Manual. Its pin mapping, mechanical dimensions, and connector keying are unique to that variant. Using QB-38SP-EA-01T with non-I1A 38-pin RL78 devices (e.g., RL78/G13 or RL78/F14) risks incorrect signal routing, debug failure, or hardware damage due to incompatible pin functions or voltage domains.

Does QB-38SP-EA-01T require power or configuration?

No - QB-38SP-EA-01T is a fully passive adapter with no power input, no configuration interface, and no onboard logic. It draws zero current and requires no firmware, jumpers, or DIP switches. Operation begins immediately upon correct mechanical insertion between the YQ and NQ connectors, provided the QB-RL78I1A emulator and target system are powered and configured per their respective manuals.

Can QB-38SP-EA-01T be used without the QB-38SP-YQ-01T or QB-38SP-NQ-01T?

No - QB-38SP-EA-01T is not standalone. It must be used in conjunction with both the QB-38SP-YQ-01T (YQ connector mounted on the QB-RL78I1A) and the QB-38SP-NQ-01T (target-side soldered connector). Omitting either breaks the signal path: the YQ provides the emulator-side interface, the NQ anchors to the target PCB, and the QB-38SP-EA-01T bridges them. Substitution with generic 38-pin adapters is unsupported and invalidates Renesas' debug certification.

What mechanical handling precautions apply to QB-38SP-EA-01T?

QB-38SP-EA-01T must be inserted and removed only when both the QB-RL78I1A and target system are powered off. During plugging, align pin 1 using corner-cut matching and apply even, axial pressure - never twist or rock. Unplugging requires non-conductive tools (e.g., wooden stick) inserted between EA and YQ/SA to avoid bending pins. Excessive flexing, dropping, or exposure to ESD or moisture voids warranty and may degrade contact resistance over time.