Shenzhen ChuanHang Electronic Technology Co., Ltd.

1.1 COB process, product with backlight, conductive tape connection, stable structure 1.21C uses st7920, two chips for simplified Chinese character library or traditional Chinese character library 1.3 Low power consumption, with 5V/3.3V two power modes, no backlight current within 8mA, backlight current within 40mA.
1.4 LED can be driven by PIN1, PIN2, PIN19, PIN20. 1.5 Product features:
Built-in character library ROM (CGROM): a total of 8192 characters
Built-in half-width character ROM (HCGROM): a total of 126 alphabetic characters
Built-in drawing RAM (GDRAM): 64x256bit
Display 8 characters x 2 lines (16x16 dot matrix).
Single picture ≦128x32 dot matrix
Optional 3-wire SPI interface/8-bit parallel port interface/4-bit parallel port interface:
When the contrast is fixed, V0 is disconnected, and when the contrast is adjusted to 3.3V, V0 can only be connected to the ground by resistance.
Rich functions:
Interface display on/off, cursor on/off, cursor flashing on/off
Display and cursor movement direction, etc.
Automatic power-on reset function
●Master-slave operation, the module has 2 chips.
●One screen displays 7 characters x 2 lines (16x16 dot matrix) + 1 half-width character.
●Single picture ≦122x32 dot matrix.
●8-bit parallel port interface, 6800 timing.