Figure 23-13. ADC Input Equivalency Diagram
Stellaris® Microcontroller
Sample and hold
ADC converter
C
ADC
R
ADC
VDD
12-bit
converter
I
L
V
IN
ESD
Clamp
ESD
Clamp
Table 23-22. ADC Module External Reference Characteristics
a
UnitMaxNomMinParameter NameParameter
V3.03-2.97External voltage reference for ADC, when the VREF field
in the ADCCTL register is 0x1
b
V
REFA
V1.01-0.99External voltage reference for ADC, when the VREF field
in the ADCCTL register is 0x3
c
µA2.0--External voltage reference leakage currentI
L
a. Care must be taken to supply a reference voltage of acceptable quality.
b. Ground is always used as the reference level for the minimum conversion value.
c. Ground is always used as the reference level for the minimum conversion value.
Table 23-23. ADC Module Internal Reference Characteristics
UnitMaxNomMinParameter NameParameter
V-3.0-Internal voltage reference for ADCV
REFI
23.14 Synchronous Serial Interface (SSI)
Table 23-24. SSI Characteristics
UnitMaxNomMinParameter NameParameterParameter
No.
ns--40SSIClk cycle time
a
T
CLK_PER
S1
t clk_per-0.5-SSIClk high timeT
CLK_HIGH
S2
t clk_per-0.5-SSIClk low timeT
CLK_LOW
S3
ns64-SSIClk rise/fall time
b
T
CLKRF
S4
system clocks1-0Data from master valid delay timeT
DMD
S5
system clocks--1Data from master setup timeT
DMS
S6
system clocks--2Data from master hold timeT
DMH
S7
993July 24, 2012
Texas Instruments-Production Data
Stellaris
®
LM3S6G65 Microcontroller
OBSOLETE: TI has discontinued production of this device.
