Eighty pins, fifty-seven signals, one programming pair

The F pair in this part number selects PLQP0080JA-A, eighty leads on fourteen millimetres at 0.65 millimetre pitch. That body offers forty-four general-purpose pins and thirteen input-only pins, and the arithmetic is what matters to a recovery job: fifty-seven usable signals, of which exactly two belong to the serial programming interface, and those two are shared with ordinary port functions. Dump R5F562T6BGFF#V3 and the first task is to find those two pins on a board that may have been designed without any thought of test access.

What the 80-pin body changes

Moving from a hundred leads to eighty costs more than twenty pins. The peripheral set on this die is fixed by the group, but the number of package pins that can carry a given function is not, and the timer subsystem is where the loss shows first. The complementary PWM outputs that a motor application needs are fully brought out on the larger bodies and reduced here, and the port output enable block that guards those outputs against a runaway drive keeps only three of its five source pins. A board in this package therefore implements a simpler power stage than the same die in a hundred-pin body, which is useful context when the firmware you are about to read starts configuring a timer channel whose output never reaches a pad.

Dump R5F562T6BGFF#V3 from the header

If the board carries a programming header, the job is short. Confirm the supply is in the 2.7 to 3.6 volt band this variant requires, note that the analog rail may legitimately sit at five volts even though the core does not, and bring the clock up before attempting any transaction. If there is no header, the two pins must be found by inspection: look for the pair that runs to a via cluster near the edge of the board, or that carries a series resistor of a few hundred ohms with a pull-up on the far side. Once found, contact them with fine probes, hold reset in the state that releases the ports, and read.

Where a 64 Kbyte image keeps its secrets

Sixty-four Kbytes is small enough that the whole array can be reviewed by hand, which is both an advantage and a trap. The advantage is completeness: nothing hides in a corner you did not look at. The trap is that the author had no room for a tidy separation between code, tables and configuration, so the boundaries are informal. Expect the timer and converter setup routines to sit near the arithmetic that uses their results, and expect the constants for the current loop to be embedded in the instruction stream rather than in a named section.

Reconciling the dump with the build

Where a linker map or a released hex file exists, reconcile against it before delivering anything. The map tells you which addresses should be occupied, the dump tells you which actually are, and the difference between the two is the interesting part: an occupied region with no map entry is either a bootloader, a calibration block, or a later patch that was never released. Selling that finding as part of the report is worth more than the binary itself. The R5F1008A copy job case walks through the same reconciliation on a differently sized array, and reading a chip describes the delivery format that keeps the audit trail intact.

Fifty-seven signals and a shorter pin list

Eighty leads yield forty-four general-purpose pins and thirteen input-only pins, and the reduction from a hundred-lead body is not spread evenly. The complementary PWM outputs are the first thing the package gives up, and the port output enable block keeps three source pins instead of five. For a read job that is irrelevant. For interpreting the firmware it is decisive, because a start-up sequence that configures a timer channel whose output never reaches a pad tells you the code base was written for a larger variant and reused here with the pin list trimmed.

The supply split on this variant is worth stating plainly: the core runs from 2.7 to 3.6 volts while the analog rail may legitimately be taken to five, which is how a three-volt part drives a five-volt sensor bridge. Check both rails at the pins before the first transaction, and keep the CAN transceiver unpowered for the duration. Read in windows and digest each window, so that a contact that drifts halfway through costs one window rather than the whole image. A related package study appears in the R5F100CA unlocking write-up, the delivery format is set out under extracting IC code, and the digest scheme itself is described in the cloning R5F1007D data case.