Renesas UPD78F9500MA(S)-CAC-E2-A

Overview

UPD78F9500MA(S)-CAC-E2-A from Renesas Electronics is a 16-pin interface adapter that converts the 14-pin E1 emulator interface to the 16-pin interface used by QB-MINI2 and PG-FP5 programmers. It supports clock frequencies of 4/8/16 MHz, includes JP1/JP2/JP3 jumper pads for configuration, and enables debug and flash programming modes for 78K0-family microcontrollers including uPD78F0711/0712/0714.

For engineers reviewing the UPD78F9500MA(S)-CAC-E2-A datasheet, UPD78F9500MA(S)-CAC-E2-A pinout, UPD78F9500MA(S)-CAC-E2-A application, or UPD78F9500MA(S)-CAC-E2-A equivalent, this adapter's jumper-configurable UART routing, E1-to-QB-MINI2/PG-FP5 interface translation, and 78K0-family-specific programming/debug mode switching are critical selection criteria.

Technical Context

The UPD78F9500MA(S)-CAC-E2-A implements passive signal mapping between two standardized emulator interfaces: it routes E1's 14-pin signals-including VDD, GND, RESET, CLK, TDI, TDO, TMS, TCK, and UART TX/RX-to corresponding pins on the 16-pin QB-MINI2/PG-FP5 header. No active logic or level-shifting circuitry is present.

Jumper JP2 controls UART path isolation during debugging versus flash programming; JP3 enables/disables alternate reset or programming signal routing for specific 78K0 variants (e.g., uPD78F0711/0712/0714); JP1 provides optional trace or test point access. All jumpers are solder-pad type with default shorted configuration.

Key Specifications

Availability

UPD78F9500MA(S)-CAC-E2-A is available at Aetrix Electronics and suitable for embedded firmware development, microcontroller debug validation, and production flash programming workflows requiring stable component supply and legacy Renesas toolchain interoperability.

Supply support for UPD78F9500MA(S)-CAC-E2-A 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 is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

The UPD78F9500MA(S)-CAC-E2-A belongs to Renesas' legacy emulator accessory product line, designed specifically to bridge interface incompatibility between older E1 emulators and newer QB-MINI2/PG-FP5 programming tools for 78K0-based designs.

FAQ

What is the primary function of the UPD78F9500MA(S)-CAC-E2-A?

The UPD78F9500MA(S)-CAC-E2-A is a passive hardware adapter that translates pin assignments and signal routing between the 14-pin E1 emulator interface and the 16-pin interface used by QB-MINI2 and PG-FP5 programmers. It enables legacy E1 users to program and debug 78K0-family MCUs without modifying target board hardware or replacing existing emulator infrastructure. The UPD78F9500MA(S)-CAC-E2-A contains no active circuitry-only trace routing and configurable solder jumpers.

Which microcontrollers are explicitly supported by the UPD78F9500MA(S)-CAC-E2-A?

The UPD78F9500MA(S)-CAC-E2-A is confirmed compatible with 78K0/Kx1+ series MCUs and specifically lists uPD78F0711, uPD78F0712, and uPD78F0714 in its user manual as requiring JP3 jumper manipulation during flash programming. Support is limited to devices using the standard 78K0 debug/programming protocol over UART and JTAG-compatible signals routed through the E1 interface. The UPD78F9500MA(S)-CAC-E2-A does not support R8C, RL78, or newer families.

How do JP2 and JP3 jumpers affect UPD78F9500MA(S)-CAC-E2-A operation?

JP2 isolates the UART programming path when open (debug mode) to prevent signal contention if external UART peripherals are connected; it must be shorted (default) during flash programming. JP3 must be opened during programming of uPD78F0711/0712/0714 and shorted during debugging. These configurations ensure correct reset assertion and UART handshaking timing per device-specific requirements. The UPD78F9500MA(S)-CAC-E2-A documentation specifies exact jumper states for each operational mode.

Does the UPD78F9500MA(S)-CAC-E2-A provide level shifting or voltage translation?

No, the UPD78F9500MA(S)-CAC-E2-A performs only direct pin-to-pin signal routing with no active components, level shifters, or voltage translators. It assumes matching logic levels (e.g., 3.3 V or 5 V) between the E1 emulator and target system. Users must verify voltage compatibility before connection; mismatched levels may damage either the emulator or target MCU. The UPD78F9500MA(S)-CAC-E2-A relies entirely on host tool and target board design compliance.

Is the UPD78F9500MA(S)-CAC-E2-A compatible with Renesas E2 emulator or CS+ IDE?

No, the UPD78F9500MA(S)-CAC-E2-A is designed exclusively for use with the legacy E1 emulator and is not compatible with the newer E2 emulator or CS+ integrated development environment. Its pin mapping, signal timing assumptions, and jumper logic are defined for E1's 14-pin interface specification and have not been validated for E2's different signaling architecture or software stack. The UPD78F9500MA(S)-CAC-E2-A remains a dedicated E1 accessory.