STLED316SMTR datasheet(25/33 Pages) STMICROELECTRONICS

Part #	STLED316SMTR

Description	Serial-interfaced 6-digit LED controller with keyscan

PDF	33 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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25 / 33 page

STLED316S

Key-scanning and display timing

25/33

Key-scanning and display timing

During the first cycle, the 16 channels are used for the keyscan. The keyscan duration is

made up of 64 µs. The second cycle is used for the display of the LED (discrete). The

maximum time is 512µs and the 3rd-8th cycles are used for the 7-segment display. The

number of cycles will increase or decrease depending upon the user configuration.

By default, the configuration is made up of 4 cycles. If any data is written to the discrete

LED, only then the 2nd cycle is valid. Otherwise the 7-segment moves from 2nd-7th cycle.

This is a continuous operation. During the normal operation, the user cannot control or stop

the timing generation.

One cycle of key scanning consists of one frame, and data of 8 x 2 matrices are stored in

the RAM.

STLED316SMTR Datasheet(PDF) 25 Page - STMicroelectronics