LM3S2637 Datasheet, PDF (639/678 Pages) Texas Instruments – Stellaris® LM3S2637 Microcontroller

Stellaris^® LM3S2637 Microcontroller
20.2.9
Table 20-19. ADC Module Internal Reference Characteristics
Parameter
V_REFI
E_IR
Parameter Name
Internal voltage reference for ADC
Internal voltage reference error
Min
Nom
Max
Unit
-
3.0
-
V
-
-
±2.5
%
Synchronous Serial Interface (SSI)
Table 20-20. SSI Characteristics
Parameter
No.
Parameter Parameter Name
Min Nom Max
S1
t_{clk_per}
SSIClk cycle time
2
-
65024
S2
t_{clk_high}
SSIClk high time
-
0.5
-
S3
t_{clk_low}
SSIClk low time
S4
t_clkrf
SSIClk rise/fall time^a
-
0.5
-
-
6
10
S5
t_DMd
Data from master valid delay time
0
-
1
S6
t_DMs
Data from master setup time
1
-
-
S7
t_DMh
Data from master hold time
2
-
-
S8
t_DSs
Data from slave setup time
S9
t_DSh
Data from slave hold time
a. Note that the delays shown are using 8-mA drive strength.
1
-
-
2
-
-
Unit
system clocks
t clk_per
t clk_per
ns
system clocks
system clocks
system clocks
system clocks
system clocks
Figure 20-12. SSI Timing for TI Frame Format (FRF=01), Single Transfer Timing Measurement
S1
S2
S4
SSIClk
S3
SSIFss
SSITx
SSIRx
MSB
4 to 16 bits
LSB
June 18, 2012
639
Texas Instruments-Production Data