LM3S328 Datasheet, PDF (356/371 Pages) List of Unclassifed Manufacturers – Microcontroller

Electrical Characteristics
Table 18-9. ADC Characteristics (Continued)
Parameter
Parameter Name
N
f_ADC
t_ADCCONV
f_ADCCONV
INL
DNL
OFF
GAIN
Resolution
ADC internal clock frequency
Conversion time
Conversion rate
Integral nonlinearity
Differential nonlinearity
Offset
Gain
a. t_ADC = 1/f_{ADC clock}
18.2.5 I²C
Min
Nom
Max
Unit
-
10
-
bits
7
8
9
MHz
-
-
16
t_ADC cycles^a
438
500
563
k samples/s
-
-
±1
LSB
-
-
±1
LSB
-
-
+2
LSB
-
-
±2
LSB
Table 18-10. I²C Characteristics
Parameter
No.
Parameter
Parameter Name
Min
Nom
Max
Unit
I1^a
t_SCH
Start condition hold time
36
-
-
system
clocks
I2^a
t_LP
Clock Low period
I3^b
t_SRT
I2CSCL/I2CSDA rise time
(V_IL=0.5 V to V_IH=2.4 V)
I4^a
t_DH
Data hold time
36
-
-
system
clocks
-
-
(see
ns
note b)
2
-
-
system
clocks
I5^c
t_SFT
I2CSCL/I2CSDA fall time
(V_IH=2.4 V to V_IL=0.5 V)
I6^a
t_HT
Clock High time
-
9
24
-
10
ns
-
system
clocks
I7^a
t_DS
Data setup time
18
-
-
system
clocks
I8^a
t_SCSR
Start condition setup time (for repeated
36
-
-
system
start condition only)
clocks
I9^a
t_SCS
Stop condition setup time
24
-
-
system
clocks
a. Values depend on the value programmed into the TPR bit in the I²C Master Timer Period (I2CMTPR) register (see page 326); a
TPR programmed for the maximum I2CSCL frequency (TPR=0x2) results in a minimum output timing as shown in the table
above. The I²C interface is designed to scale the actual data transition time to move it to the middle of the I2CSCL Low period.
The actual position is affected by the value programmed into the TPR; however, the numbers given in the above values are
minimum values.
356
April 27, 2007
Preliminary