Based on LPC4322JET100E chip (Data Sheet):
- Cortex-M4 204 Mhz (currently run at 120 MHz)
- 512 KB Flash
- 104 KB RAM
- High-speed USB 2.0 device controller: 6 bi-directional endpoints including EP0 (*)
- TFBGA100 packaging
(*) : "Supports six logical endpoints including one control endpoint for a total of 12 physical endpoints." (source: UM10503 🔒)
| Region | Size | Start | End |
|---|---|---|---|
| Flash | 200 KB | 0x1A00_0000 | 0x1A03_2000 |
| SRAM | 32 KB | 0x1000_0000 | 0x1000_8000 |
Bootloader size is 64 KB
| Signal | I/O | Symbol | Pin |
|---|---|---|---|
| SWD / JTAG | |||
| SWCLK / TCK | O | P1_17 | H10 |
| SWDIO / TMS | I/O | P1_6 | K4 |
| SWO / TDO | I | P1_14 | J8 |
| TDI | O | P0_18 | J10 |
| nRESET | O | P2_5 | D10 |
| GNDDetect | I | P2_13 | A10 |
| UART | |||
| UART TX | O | P2_0 | G10 |
| UART RX | I | P2_1 | G7 |
| Button | |||
| NF-RST But. | I | P2_11 | A9 |
| LEDs | |||
| LED | O | P1_1 | K2 |
The LPC4322 has USB DFU support in ROM which can be leveraged with LPCScrypt to load DAPLink bootloader.
| Board | Label | Jumper |
|---|---|---|
| LPCXpresso55S69 | DFU | J4 |
| LPCXpresso55S28 | DFU | J4 |
| LPCXpresso55S16 | Link2 | JP6 |
| LPCXpresso55S06 | DFU | JP6 |
| LPCXpresso54628 | DFU Link | JP5 |
| LPCXpresso54618 | DFU Link | JP5 |
| LPCXpresso54608 | DFU Link | JP5 |
| LPCXpresso54114 | DFU Link | JP5 |
| LPCXpresso54102 | DFU Link | JP5 |
| LPCXpresso54S018 | DFU Link | JP5 |
| LPCXpresso54018 | DFU Link | JP5 |
| LPCXpresso43S67 | DFU Link | JP6 |
| LPCXpresso43S37 | DFU Link | JP6 |
| LPCXpresso18S37 | DFU Link | JP6 |
| LPCXpresso4367 | DFU Link | JP6 |
| LPCXpresso4337 | DFU Link | JP6 |
| LPCXpresso1125 | DFU Link | JP5 |
Install jumper according to table above and power cycle to force into
DFU boot mode. Adapt the following command to program
lpc4322_bl_crc.bin.
$ ./scripts/boot_lpcscrypt
Looking for DFU devices with VID 1fc9 PID 000c ...
dfu-util -d 1fc9:000c -c 1 -i 0 -t 2048 -R -D ./scripts/../bin/LPCScrypt_240.bin.hdr
Booted LPCScrypt target (1fc9:000c) with ./scripts/../bin/LPCScrypt_240.bin.hdr
$ ./bin/lpcscrypt querypart
partID = 0xa00bcb3c 80
decode = LPC4322: BankA 512KB
Core Clock = 180000000
$ ./bin/lpcscrypt program ${PATH_TO_BINARY}/lpc4322_bl_crc.bin BANKA
..
Programmed 57344 bytes to 0x1a000000 in 0.532s (105.297KB/sec)
Remove the jumper and power cycle. The MAINTENANCE drive should
appear and you can copy the interface firmware into it. If there is no
specific interface firmware support for the board you can use the
generic lpc4322_if_crc.bin interface firmware which does not offer
drag and drop flash functionality.