PCN stands for Product Change Notification See also: FAQ: Product Update and Change Notifications


PMOLED is Passive Matrix OLED — Passive Matrix Organic Light Emitting Diode. Passive Matrix refers to the arrangement of the driving electrodes in the OLED display. In PMOLED displays, there is an array of horizontal conductors and an array of vertical conductors, with the OLED material between them. A pixel is formed where the vertical … Read more PMOLED


PUN stands for Product Update Notification See also: FAQ: Product Update and Change Notifications

R5G6B5 or 565

R5G6B5 or 565: A method of storing a full-color pixel in a single 16-bit word of memory. For each pixel, the red and blue channels can take on 32 levels, encoded as 5 bits each. The green channel can take on any of 64 levels, encoded as 6 bits. Theoretical color depth is 216 or … Read more R5G6B5 or 565


RAM stands for Random Access Memory. This is memory that may be written to some value, then later read. RAM is the normal memory in a computer system. RAM only holds data when the RAM is powered. If power is interrupted, the data stored in the RAM is lost.


A reflective LCD depends on having sufficient ambient light to reflect in order to be read. A reflective LCD does not have a backlight and does not make any light on its own.   A reflective LCD can be seen well in any lighting situation where you could read text on a paper, they are … Read more Reflective


ROM stands for Read Only Memory. This is memory that is factory pre-programmed to hold some data. ROM is data that can be read, but cannot be written or changed.


SPI stands for Serial Peripheral Interface. SPI is a simple serial bus that is often used by LCD or OLED controllers. SPI as implemented for OLED and LCD controllers typically uses a “3-wire SPI” or “4-wire SPI” scheme. Detailed Definition SPI was originally championed by Motorola (now Freescale). In its original “pure” form SPI uses … Read more SPI


STN stands for Super-Twisted Nematic. STN is the commonly used LCD material in passive character and graphic LCDs.


TAB stands for tape automated bonding. Some of Crystalfontz’s displays use a TAB style tail  that should be soldered directly to corresponding pads on a PCB using a hot-bar soldering machine. High volume contract manufacturers will be familiar with this type of construction and its assembly methods. Hot-bar soldering machines designed for prototype, rework or repair … Read more TAB