SL20T0081 View Datasheet(PDF) - System Logic Semiconductor
Part Name
Description
MFG CO.
'SL20T0081' PDF : 56 Pages View PDF
SLS System Logic Semiconductor
SL20T0081
Serial Interface (PS = “L”)
When the SL20T0081 is active, serial data (D7) and serial clock (D6) input are enabled. And not active,the internal
8-bit shift register and the 3-bit counter are reset. Serial data can be read on the rising edge of serial clock going into
D6 and processed as 8-bit parallel data on the eighth serial clock. Serial data input is display data when RS is high
and caused by the line length, the operation check on the actual machine is recommended.
Figure 3. Serial Interface Timing
CE1
CE2
SID
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4
SCLK
RS
Busy Flag
The Busy Flag indicates whether the SL20T0081 is operating or not. When D7 is “H” in read status operation, this
device is in busy status and will accept only read status instruction. If the cycle time is correct, the microprocessor
needs not to check this flag before each instruction, which improves the MPU performance.
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