Renesas UPD30541GD-200-WML-A

Overview

UPD30541GD-200-WML-A from NEC Electronics is a 64-bit MIPS IV-compliant RISC microprocessor operating at 200 MHz, featuring symmetric dual-issue superscalar pipeline with six independent execution units, 32 KB instruction and 32 KB data caches with line locking, and on-chip JTAG/N-wire/N-trace debugging - deployed in digital set-top boxes for real-time video decoding and system control.

For engineers reviewing the UPD30541GD-200-WML-A datasheet, UPD30541GD-200-WML-A pinout, UPD30541GD-200-WML-A application, or UPD30541GD-200-WML-A equivalent, key selection criteria include MIPS IV ISA compliance, 200 MHz clock rate with 377 Dhrystone MIPS performance, 208-pin PQFP package thermal profile, and support for integer MAC and packed data vector operations in embedded multimedia systems.

Technical Context

The UPD30541GD-200-WML-A implements a symmetric two-way superscalar pipeline with two unified 64-bit integer/floating-point units and 64-bit barrel shifters. It supports variable-page-size virtual memory mapping via a 48-entry joint TLB and separate four-entry micro-TLBs for instructions and data.

Cache subsystem includes nonblocking load/store architecture with up to four outstanding data cache misses and concurrent cache fill capability. The SysAD bus operates at 100 MHz with 32-bit multiplexed address/data interface and full MIPS IV instruction set extensions including rotate, integer MAC, and packed 8×8-bit vector operations.

Key Specifications

Pinout & Package

UPD30541GD-200-WML-A is housed in a 208-pin Plastic Quad Flat Package (PQFP) with 0.65 mm lead pitch, designed for surface-mount assembly and thermal dissipation in compact consumer electronics enclosures.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 64-bit embedded RISC processor applications.

Compared with µPD30541GD-167-WML and RM5261, the UPD30541GD-200-WML-A delivers highest sustained MIPS/Watt in its class and unique hardware support for 8×8-bit packed operations - making it the only option among the three capable of real-time MPEG-2 and JPEG acceleration without coprocessor assistance.

Availability

UPD30541GD-200-WML-A is available at Aetrix Electronics and suitable for digital set-top boxes, Internet appliances, and office automation equipment requiring stable component supply across long-lifecycle consumer electronics programs.

Supply support for UPD30541GD-200-WML-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

NEC Electronics Inc. was a leading Japanese semiconductor manufacturer specializing in high-performance microprocessors, memory, and analog ICs before its merger into Renesas Electronics in 2010.

The VR5432 family, including UPD30541GD-200-WML-A, was engineered for cost-sensitive, high-throughput embedded multimedia systems - balancing MIPS IV compute density, low-power operation, and integrated debug infrastructure for rapid STB development.

FAQ

What is the maximum operating frequency of the UPD30541GD-200-WML-A?

The UPD30541GD-200-WML-A is rated for a maximum operating frequency of 200 MHz, delivering 377 Dhrystone MIPS performance. This frequency is guaranteed under specified voltage (3.3 V ±0.3 V) and temperature (0°C to 70°C) conditions per NEC's original datasheet. The part uses an internal PLL to generate the core clock from the external CLKIN signal, and timing closure requires strict adherence to setup/hold margins on the SysAD bus.

Does the UPD30541GD-200-WML-A support hardware debugging features?

Yes, the UPD30541GD-200-WML-A integrates full IEEE 1149.1 JTAG, NEC-specific N-wire, and N-trace debugging interfaces. These enable real-time instruction trace, hardware breakpoints, and on-chip watchpoint monitoring without halting system execution. The UPD30541GD-200-WML-A also includes performance counters that track any two of 16 selectable events for software optimization.

What package type is used for the UPD30541GD-200-WML-A?

The UPD30541GD-200-WML-A is packaged in a 208-pin Plastic Quad Flat Package (PQFP) with 0.65 mm lead pitch and standard JEDEC MO-118 footprint. This package supports reflow soldering and provides adequate thermal dissipation for its 2.1 W typical power consumption in ventilated consumer enclosures.

Is the UPD30541GD-200-WML-A compatible with the MIPS III instruction set?

No, the UPD30541GD-200-WML-A implements the MIPS IV instruction set architecture exclusively. While it maintains backward compatibility with MIPS III user-mode instructions, it adds mandatory extensions including integer multiply-accumulate, rotate, and packed data vector operations. Code compiled for MIPS III may execute but cannot leverage UPD30541GD-200-WML-A's performance-critical acceleration features.

What are the cache characteristics of the UPD30541GD-200-WML-A?

The UPD30541GD-200-WML-A features separate 32 KB two-way set-associative instruction and data caches, each with parity protection and programmable line locking. Cache line size is 32 bytes, and the nonblocking architecture allows up to four outstanding data cache misses. Both caches support write-back policy and can be locked to prevent eviction of critical OS or video buffers.