Renesas QB-20SP-EA-03T

Overview

QB-20SP-EA-03T from Renesas Electronics is an exchange adapter designed to interface the QB-RL78F12 in-circuit emulator with 20-pin SP (Small Outline Package) target devices, enabling pin-mapped debugging via NQ and YQ connectors. It supports RL78/F12 microcontrollers operating at 1.8–5.5 V, provides mechanical height compatibility with rear/front space adapters, and is used in conjunction with QB-20SP-NQ-01T target connector and QB-RL78F12 host unit.

For engineers reviewing the QB-20SP-EA-03T datasheet, QB-20SP-EA-03T pinout, QB-20SP-EA-03T application, or QB-20SP-EA-03T equivalent, this adapter enables reliable physical and electrical signal translation between the QB-RL78F12 emulator and 20-pin SP-package RL78/F12 devices during firmware development, real-time trace, and register-level debugging workflows.

Technical Context

The QB-20SP-EA-03T serves as a passive mechanical and electrical bridge between the QB-RL78F12's YQ connector and the QB-20SP-NQ-01T target connector mounted on the user's RL78/F12 board. It implements direct 1:1 pin mapping without active circuitry, level-shifting, or signal conditioning - all signals pass through with continuity verified per Renesas' system configuration documentation for 20SP package emulation.

It is mechanically engineered to accommodate height variations introduced by optional space adapters (e.g., QB-30SP-YS-01T), ensuring stable mating with both YQ and NQ connectors under PCB stack-up tolerances. Its design assumes use only with the QB-RL78F12 platform and RL78/F12 target devices in 20-pin SP packages - no support for other families, pin counts, or package types is specified or implied.

Key Specifications

Availability

QB-20SP-EA-03T is available at Aetrix Electronics and suitable for RL78/F12-based industrial control modules, automotive body electronics prototypes, consumer appliance MCU development, and educational embedded systems requiring stable component supply for debugger hardware integration.

Supply support for QB-20SP-EA-03T 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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

QB-20SP-EA-03T belongs to Renesas' IECUBE™ in-circuit emulator accessory product line, engineered specifically to extend QB-RL78F12 debugging capability to 20-pin SP-package RL78/F12 microcontrollers in real-world PCB layouts.

FAQ

Is QB-20SP-EA-03T compatible with any emulator other than QB-RL78F12?

No. QB-20SP-EA-03T is exclusively designed for use with the QB-RL78F12 in-circuit emulator and its associated YQ connector. It is not electrically or mechanically compatible with other Renesas emulators (e.g., QB-RX, QB-RL78G13) or third-party debuggers. The pin layout, mounting features, and signal routing are specific to the QB-RL78F12 system architecture and documented only in the QB-RL78F12 User's Manual Rev.1.00.

Does QB-20SP-EA-03T include active circuitry such as level shifters or buffers?

No. QB-20SP-EA-03T is a passive exchange adapter with no integrated ICs, resistors, capacitors, or active components. It provides direct, unaltered signal continuity between the YQ connector and QB-20SP-NQ-01T target connector - all pins are hardwired 1:1 per Renesas' system configuration table for 20SP devices.

What target devices does QB-20SP-EA-03T support?

QB-20SP-EA-03T supports only RL78/F12 microcontrollers in 20-pin SP packages, as confirmed in Table 1-3 of the QB-RL78F12 User's Manual. It is not validated for use with RL78/F13, RL78/G12, or any non-RL78/F12 device - even if pin count and package match - due to differences in debug interface pin assignments and voltage requirements.

Can QB-20SP-EA-03T be used without a space adapter?

Yes. QB-20SP-EA-03T can be used directly between YQ and NQ connectors when target board height aligns with QB-RL78F12's standard interface plane. Space adapters (e.g., QB-30SP-YS-01T) are optional accessories for height compensation only - they are not required for basic electrical functionality of QB-20SP-EA-03T.

Is QB-20SP-EA-03T RoHS compliant and lead-free?

Yes. As a Renesas-branded accessory shipped with QB-RL78F12 evaluation kits, QB-20SP-EA-03T conforms to RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 3 marking standards for lead-free finish. Compliance is documented in Renesas' general environmental policy and reflected in material declarations for QB-RL78F12 kit components.