The R5F524TAADFN is a member of Renesas’ RX24T group: an RXv2 32-bit CISC core at 80 MHz on 5 V, with 256 KB on-chip array and 64 KB of SRAM in a LQFP80. The contact form books the capture bench slot for a R5F524TAADFN that has locked its debug path.
Bench Routine
We read 256 KB on-chip array, then the 8 KB data flash, then the option memory, then a live RAM snapshot, and repeat for a checksum. The capture order on the R5F524TAADFN is code flash, data flash, option memory, then a confirming second pass on the 5 V rail.
Where The Read Protection Lives
The R5F524TAADFN protects its code with a debug ID code in the option-setting memory, compared against a value the debugger presents. Access to the R5F524TAADFN is gated by an ID code in the option area, checked each time the background debug interface connects. The readout-protection overview frames why a locked part still yields to a careful bench routine.
Peripheral Set
The RX24T silicon in the R5F524TAADFN is built for motors: MTU3 complementary PWM, a GPT unit and a 12-bit ADC near 0.5 us. What distinguishes the R5F524TAADFN is its peripheral mix aimed at drives: MTU3 PWM, GPT timers, a fast 12-bit ADC and a 10-bit DAC. The RX24T motor note is a different vendor’s take on fast ADCs plus timers for control.
Flash And Working Memory
Three memory types share the R5F524TAADFN: 256 KB on-chip array for the program, an 8 KB data flash for EEPROM emulation, and 64 KB of SRAM. The R5F524TAADFN splits storage into 256 KB on-chip array, a dedicated 8 KB data flash and 64 KB of SRAM for runtime state. An AT32 firmware note shows a password region that returns fill bytes on data reads.
Reporting And Hand-Off
Delivery is one Intel HEX at the true addresses, a binary per region, and a report listing the ID state and data-flash counts. Customers get an Intel HEX merging all regions at real addresses, separate binaries, and a short report for the R5F524TAADFN LQFP80. See the R5F524T8ADFP page for a parallel treatment of this silicon family.
Our report flags any external memory the LQFP80 board carried, since the R5F524TAADFN image may span parts.
For a 80-pin R5F524TAADFN the alternate-function pins are decoded from the dump, not guessed from the silk.
A LQFP80 R5F524TAADFN sent cold in foam reads more reliably than one that travelled powered and warm.
A second confirming read is offered when a customer wants proof no weak cell moved on the R5F524TAADFN LQFP80.
The RXv2 32-bit CISC @80 MHz, 5 V on the R5F524TAADFN is documented in our report so a replacement part boots identically.
Where the R5F524TAADFN arrived with corroded pins, we clean the LQFP80 before the first bench attempt.
We separate the 256 KB on-chip array from working memory in the archive, since mixing them hides the code lock state.
Where decapsulation was needed the bare die of the R5F524TAADFN is photographed before the lid is fully removed.
A small reference card travels with the R5F524TAADFN so the capture bench knows the expected die orientation.
We record the supply rail used on the LQFP80, because the R5F524TAADFN flash timing is sensitive to voltage.
The LQFP80 outline of the R5F524TAADFN matches other group members, so the marking confirms the exact die fitted.
The RXv2 32-bit CISC @80 MHz, 5 V clock source is noted for the R5F524TAADFN, because a rebuild with the wrong PLL will not start.
A R5F524TAADFN recovered for a warranty claim ships with the evidence package the LQFP80 board provides.
We archive a checksum per region so a future read of the R5F524TAADFN can be compared byte for byte.
A R5F524TAADFN that has been partially read elsewhere often arrives with the option region already corrupted.
The customer receives the files with a short note on reflashing the LQFP80 without tripping the code lock again.
The delivery keeps the original protection state of the R5F524TAADFN, so a later comparison reuses the same settings.
A recovered R5F524TAADFN is cross-checked against the order photo so the marking matches the report.
A LQFP80 R5F524TAADFN that locked mid-project is common; the program array is intact, only the debug path is closed.
We keep the original oscillator value in the report, since a wrong crystal stops a rebuilt 80-pin board.