LM3S6952 Datasheet, PDF (589/626 Pages) Texas Instruments – Stellaris LM3S6952 Microcontroller

Stellaris® LM3S6952 Microcontroller
Table 23-18. ADC Characteristics (continued)
Parameter Parameter Name
Min
Nom
Max
Unit
E_O
Offset error
-
-
±1
LSB
E_G
Full-scale gain error
-
-
±3
LSB
E_TS
Temperature sensor accuracy
-
-
±5
°C
a. The ADC reference voltage is 3.0 V. This reference voltage is internally generated from the 3.3 VDDA supply by a band
gap circuit.
b. The ADC must be clocked from the PLL or directly from an external clock source to operate properly.
c. The conversion time and rate scale from the specified number if the ADC internal clock frequency is any value other than
16 MHz.
Figure 23-11. ADC Input Equivalency Diagram
VDD
Stellaris® Microcontroller
R_ADC
10-bit
converter
V_IN
I_L
C_ADC
Sample and hold
ADC converter
23.2.9
Table 23-19. 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 23-20. SSI Characteristics
Parameter
No.
S1
S2
S3
S4
S5
S6
S7
S8
Parameter Parameter Name
Min
t_{clk_per}
SSIClk cycle time
2
t_{clk_high}
SSIClk high time
-
t_{clk_low}
SSIClk low time
-
t_clkrf
SSIClk rise/fall time
-
t_DMd
Data from master valid delay time 0
t_DMs
Data from master setup time
1
t_DMh
Data from master hold time
2
t_DSs
Data from slave setup time
1
Nom
-
0.5
0.5
7.4
-
-
-
-
Max
65024
-
-
26
1
-
-
-
Unit
system clocks
t clk_per
t clk_per
ns
system clocks
system clocks
system clocks
system clocks
April 05, 2010
589
Texas Instruments-Production Data