Digi NS9215 - Manual (Page 505)

. . . . .
T I M I N G
Memory Timing
www.digiembedded.com 505
SPI Timing
All AC characteristics are measured with 10pF, unless otherwise noted.
The next table describes the values shown in the LCD timing diagrams.
Parm Description Min Max Unit Mod
es Not
es
SPI master parameters
SPO SPI enable low setup to first SPI CLK out
rising 3*T
BCLK
-10 ns 0,3 1,3
SP1 SPI enable low setup to first SPI CLK out
falling 3*T
BCLK
-10 ns 1,2 1,3
SP3 SPI data in setup to SPI CLK out rising 30 ns 0,3
SP4 SPI data in hold from SPI CLK out rising 0 ns 0,3
SP5 SPI data in setup to SPI CLK out falling 30 ns 1,2
SP6 SPI data in hold from SPI CLK out falling 0 ns 1,2
SP7 SPI CLK out falling to SPI data out valid 10 ns 0,3 6
SP8 SPI CLK out rising to SPI data out valid 10 ns 1,2 6
SP9 SPI enable low hold from last SPI CLK out
falling 3*T
BCLK
-10 +2 ns 0,3 1,3
SP1O SPI enable low hold from last SPI CLK out
rising 3*T
BCLK
-10 ns 1,2 1,3
SP11 SPI CLK out high time SP13*45% SPI3*55% ns 0,1,2,
3 4
SP12 SPI CLK out low time -SP13*45% SPI3*55% ns 0,1,2,
3 4
SP13 SPI CLK out period T
BCLK
*6 ns 0,1,2,
3 3
SPI slave parameters
SP14 SPI enable low setup to first SPI CLK in
rising 30 ns 0,3 1
SP15 SPI enable low setup to first SPI CLK in
falling 30 ns 1,2 1
SP16 SPI data in setup to SPI CLK in rising 0 ns 0,3
SP17 SPI data in hold from SPI CLK in rising 60 ns 0,3
SP18 SPI data in setup to SPI CLK in falling 0 ns 1,2
SP19 SPI data in hold from SPI CLK in falling 60 ns 1,2
SP20 SPI CLK in falling to SPI data out valid 20 70 ns 0,3 6
SP21 SPI CLK in rising to SPI data out valid 20 70 ns 1,2 6