4.2″ ST‐GR42 - OpenEPaperLink/OpenEPaperLink GitHub Wiki
Specs
- ZBS243 (SEM9110) SoC (8051 based core) @ 16 MHz
- 64 kB Flash ROM
- 8 kB xRAM
- 256 Bytes iRAM
- 1 MB SPI Flash (???)
- 802.15.4 Radio (2.4 Ghz)
- 4.2" SSD1619A EPaper Display (BWR) with 400 x 300 px
- 2 x CR2450 button cells
- 3 x CR2450 button cells (GR42RG0/GM42KC0/GR42003N/GM42003N)
- Unknown NFC controller (N/N2 models only, see table)
Models
Model |
MAC ID |
Options |
Note |
Label |
ST-GM42003 |
401 |
|
BW, No NFC |
|
ST-GM42003N |
403 |
NFC |
BW |
|
ST-GM42KC0 |
401 |
|
BW, No NFC, 3 x CR2450 |
|
ST-GR42003 |
481 |
|
BWR, No NFC |
|
ST-GR42003N |
483 |
NFC |
BWR |
|
ST-GR420x3N2 |
483 |
NFC |
BWR, x = Case color |
|
ST-GR42RG0 |
411 |
|
BWR, No NFC, 3 x CR2450 |
|
[!NOTE]
MAC ID = tag size & type (2 digits, e.g. 48
) + panel & nfc type (1 digit, e.g. 3
)
Photos
ST-GR420x3N2 (e.g. GR42003N2, GR420B3N2)
ST-GR42RG0
Manual
EPaper Display (SSD1619A) Pins
ZBS243 |
SSD1619 |
Note |
P1.7 |
CS |
Active Low |
P2.1 |
Busy |
Active High |
P2.2 |
D/C |
High for data / Low for commands |
P2.0 |
RESET |
Active Low |
P0.0 |
SPI_CLK |
|
P0.1 |
MOSI/MISO |
Used for both; same pin to read data |
Programming
|
Programming pins |
Various programming jigs have been made for this tag.
It can be flashed using the AP-Flasher board or one of the various flashers in ATC1441's ZBS_Flasher repo.
Original Firmware File Hashes
Version |
Type |
MD5 (first 10kbyte) |
Original Tag Mac (as written on case) |
Note |
031 |
ST-GR29000 |
52B8F6316BC2EB45231B23B2CD563B80 |
02393A793B16 |
|