STP16CPC26(2013) 查看數據表（PDF） - STMicroelectronics

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STP16CPC26
(Rev.:2013)

Low voltage 16-bit constant current LED sink driver

STMicroelectronics 

Timing diagrams

8

Timing diagrams

STP16CPC26

The timing diagram shown in Figure 11 and the truth table in Table 7 explain how to send

data to the device. This can be summarized in the following points:

● LE and OE are level sensitive and not synchronized with the CLK signal

● When LE is at low level, the latch circuit holds previous data

● If LE is high level, data present in the shift register are latched

● When OE is at low level, the status of the outputs OUT0 to OUT15 depends on the data

in the latch circuits

● With OE at high level, all outputs are switched off independently on the data stored in

the latch circuits

● Every rising edge of the CLK signal, a new data on SDI pin is sampled. This data is

loaded into the shift register, whereas a bit is shifted out from SDO.

Figure 11. Timing diagram

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12/26

Doc ID 18469 Rev 4

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