There is a particular satisfaction in the 384 KB RX130: R5F51307ADFL#30 puts three-quarters of a megabyte of code space on the group’s smallest package, 48 leads in a 7 x 7 mm LFQFP on a 0.5 mm pitch. Thirty-two kilobytes of RAM and 8 KB of E2 data flash complete the memory picture, and the #30 is a tray-packing suffix with no silicon meaning. Requests to read secured R5F51307ADFL flash memory tend to come from appliance and HVAC designs that used the headroom for protocol stacks and fault analytics – the kind of image whose loss costs more than the board.
Why The Capacity Ladder Matters
The RX130 group scales from 64 KB to 512 KB across otherwise similar parts, and the ladder is not purely quantitative. At 384 KB the application usually carries multiple communication profiles across the four SCI channels plus I2C and SPI, six 16-bit timer channels from the multi-function timer unit driving motor or inverter PWM, and a touch subsystem whose tuning tables – twenty-four channels on this 48-pin build – were measured on the production line. Each of those subsystems stores state that a bare code dump does not capture, which is why our readouts always include the E2 data flash and the configuration region as separate deliverables.
Safety Hardware As Evidence
The group’s IEC/UL 60730 support hardware is the quiet witness in every recovered image: the clock frequency accuracy measurement circuit, the data operation circuit, the 14-bit independent watchdog, the CRC unit and the ADC input-disconnection detector all require explicit start-up code. An image that initializes them coherently is very likely complete; one that leaves gaps around the watchdog or the CRC unit usually means the readout missed a region. We make that cross-check part of acceptance, because it catches partial images that byte counts alone would pass.
The ID Gate And Bench Sequence
Access control follows the family pattern: an ID code at FFFFFA0h guards the boot-mode serial programmer and the debug connection, and the die’s 128-bit unique ID sits alongside it in the top of the map. Armed ID checks reject programmers that present default credentials, and each rejected attempt is logged rather than repeated – evidence beats brute force on this family. The bench sequence runs from configuration inspection to bus observation to entry attempts, all within the 1.8 to 5.5 V window, with no erasure at any point and double verification on every read before it leaves the bench.
The Data Flash Keeps Its Own History
The 8 KB E2 data flash is erased on its own schedule and has its own endurance budget, so on a mature product it is a diary rather than a parameter store: cycle counters that only ever increment, fault codes with timestamps, and touch-tuning tables written during factory calibration. Reading it well means more than a byte-for-byte dump. We identify the regions that changed between two reads taken at different points in the session – counters move, static tables do not – and that classification goes into the report, because it tells a rebuild team which bytes are configuration and which are runtime state. Copying a runtime counter into a replacement chip verbatim is a classic rebuild mistake; the report’s classification exists to prevent exactly that.
What The Report Promises
Every engagement on this family closes against the same standard: each region of delivered data is tied to the entry path that produced it, reads are verified twice against the silicon, and anything that could not be read is stated plainly with the blocking configuration that prevented it. There is no inferred padding – if a page could not be verified, it does not ship as verified. The report also names the checks that were run against the safety hardware’s start-up code, so a client’s own reviewers can see what was and was not confirmed about the image’s completeness.
Deliverables
The package contains the 384 KB code-flash HEX, the 8 KB data-flash image, the decoded configuration bytes, and a provenance note tying each region to the path that produced it. Related parts on this site: the 256 KB 64-pin RX130 with DAC, the 128 KB 48-pin variant, and the entry-level 64 KB part. Engagements are quoted from the services desk or the contact form.