LPC1833JET100: 512 KB Flash On The TFBGA100

The LPC1833JET100 is an NXP LPC18xx part: a Cortex-M3 at 180 MHz with 512 KB of code storage and 104 KB of SRAM in a TFBGA100. Our extraction desk captures the TFBGA100 die and delivers a merged HEX for the LPC1833JET100.

Reporting And Hand-Off

Delivery is one Intel HEX at the true addresses, a binary per region, and a report listing the CRP state and boot source. Customers get an Intel HEX merging all regions at real addresses, separate binaries, and a short report for the LPC1833JET100 TFBGA100. The LPC1810FBD144 reference describes a sister device in the same LPC1833JET100 series.

Flash And Working Memory

The LPC1833JET100 maps 512 KB of code storage for execution and 104 KB of SRAM for data, with an EMC that can attach off-die SDRAM. Because the LPC1833JET100 includes an external-memory controller, a board may place code or data in off-chip SDRAM through the EMC. An R8C code note shows a Renesas 16-bit cousin with the same program-and-data split.

Bench Routine

We read 512 KB of code storage (or the SPIFI device on flashless parts), the OTP and signature area, then a live RAM image, then re-check. The capture order on the LPC1833JET100 is on-die flash or SPIFI image first, then the OTP region, then any live RAM, then a second pass.

Where The Read Protection Lives

The LPC1833JET100 guards its array with a code-read-protection bit in the program flash signature and OTP area, a reversible setting. NXP’s CRP on the LPC1833JET100 is a bit in the program flash signature region that blocks debugger reads but never erases the array. The NVRAM methodology is the reference for why the data region is read on its own.

Peripheral Set

The LPC18xx character of the LPC1833JET100 comes from the HSADC near 80 Msps and the SCT state-configurable timer built in hardware. What makes a LPC1833JET100 more than a generic Cortex-M3 is the HSADC and the SCT, both configured by code in 512 KB of code storage. The RX563 extraction case documents a Renesas part with a comparable fast-ADC emphasis.

For the TFBGA100 LPC1833JET100 we confirm the pin one mapping against the data sheet before closing the job.

The Cortex-M3 at 180 megahertz clock source is noted for the LPC1833JET100, because a rebuild with the wrong PLL will not start.

Where decapsulation was needed the bare die of the LPC1833JET100 is photographed before the lid is fully removed.

A TFBGA100 LPC1833JET100 sent cold in foam reads more reliably than one that travelled powered and warm.

Where the LPC1833JET100 arrived with corroded pins, we clean the TFBGA100 before the first bench attempt.

The TFBGA100 outline of the LPC1833JET100 matches other group members, so the marking confirms the exact die fitted.

On the LPC1833JET100 the reset behaviour is captured, since a rebuild must match the original boot to run.

We record the supply rail used on the TFBGA100, because the LPC1833JET100 flash timing is sensitive to voltage.

The report includes the option or signature contents so the LPC1833JET100 lock can be re-applied if required.

Photographs of the 100-pin board are filed with the cover report so the LPC1833JET100 package can be audited later.

The Cortex-M3 at 180 megahertz on the LPC1833JET100 runs the recovered code in place, so the cover report notes the boot setup for a spare TFBGA100.

We confirm the 100-pin count against the marking so the recovered LPC1833JET100 netlist lines up with the board.

For field units the LPC1833JET100 usually has no source; the recovered image is the only copy that survives.

The 104 KB of SRAM on the LPC1833JET100 is captured live only when the assembly still comes up on power.

The recovered files for the LPC1833JET100 are named by order number, never by the chip marking alone.

The Cortex-M3 at 180 megahertz on the LPC1833JET100 is documented in the cover report so a replacement part boots identically.

We keep the bench notes with the order so the LPC1833JET100 protection level is never lost between reads.

A 100-pin LPC1833JET100 that failed a previous shop usually still yields to a careful second pass.

Most LPC1833JET100 jobs arrive with no compiler project, only the physical part and a failed recovery attempt.

A LPC1833JET100 that has been partially read elsewhere often arrives with the option region already corrupted.

Our turnaround notes record the socket used, because the TFBGA100 LPC1833JET100 rarely sits in a standard adapter.