參數(shù)資料
型號(hào)： STLED316SMTR
廠商： STMICROELECTRONICS
元件分類： 顯示控制器
英文描述： 4 X 17 SEGMENTS SEGMENT LED DRVR AND DSPL CTLR, PDSO24
封裝： ROHS COMPLIANT, SOP-24
文件頁(yè)數(shù)： 3/33頁(yè)
文件大?。?/td> 438K
代理商： STLED316SMTR
STLED316S
STLED316S functional description
11/33
3.4
Display types
Table 3.
Seven segment display with dot point and common-anode LED panel
3.5
Keyscan
The full keyscan is illustrated in the another section of the datasheet. One diode is required
per key switch. The keyscan circuit detects any combination of keys being pressed.
3.6
Discrete LED outputs
The STLED316S can be used to drive up to 8 discrete LEDs. The single LED output acts
like a digit driver output and can be wired-up with 8 segment outputs to drive up to 8 different
discrete LEDs. Physical connections from the LED output as well as the segment outputs
must be made to drive the discrete LEDs in the desired manner. The discrete LEDs may be
needed to indicate the “Power”, “Standby” status (for example). Also it is possible to
separately control the brightness of each single LED.
3.7
Power on reset and soft-start
The device integrates an internal power-on-reset circuit which initializes the digital logic
upon power up. The soft-start circuit limits the inrush current and high peak current during
power-up. This is done by delaying the input circuit’s response to the external applied
voltage. During soft-start, the input resistance is higher which lowers the in-rush current
when the supply voltage is applied.
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