TMS570LC4357 Datasheet, PDF (174/227 Pages) Texas Instruments – Hercules Microcontroller Based on the ARM® Cortex-R Core

TMS570LC4357
SPNS195C – FEBRUARY 2014 – REVISED JUNE 2016
V_S1
I_AOSB
On-State
Bias Current
R_ext
C_ext
V_S2
I_AIL
Off-State
Leakages
R_ext
C_ext
P_in
P_in
S_mux
R_mux
S_mux
R_mux
I_AIL
I_AIL
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R_ext
P_in
V_S24
I_AIL
C_ext
S_mux
R_mux
I_AIL
I_AIL
S_samp
C_mux
R_samp
C_samp
Figure 7-10. MibADC Input Equivalent Circuit
Table 7-21. MibADC Timing Specifications
t_c(ADCLK) ⁽¹⁾
t_d(SH) ⁽²⁾
PARAMETER
Cycle time, MibADC clock
Delay time, sample and hold time
12-BIT MODE
MIN
0.033
0.2
NOM
MAX
UNIT
µs
µs
t_d(C)
t_d(SHC) ⁽³⁾
Delay time, conversion time
Delay time, total sample/hold and conversion time
10-BIT MODE
0.4
µs
0.6
µs
t_d(C)
t_d(SHC) ⁽³⁾
Delay time, conversion time
Delay time, total sample/hold and conversion time
0.33
µs
0.53
µs
(1) The MibADC clock is the ADCLK, generated by dividing down the VCLK1 by a prescale factor defined by the ADCLOCKCR register
bits 4:0.
(2) The sample and hold time for the ADC conversions is defined by the ADCLK frequency and the AD<GP>SAMP register for each
conversion group. The sample time must be determined by accounting for the external impedance connected to the input channel as
well as the internal impedance of the ADC.
(3) This is the minimum sample/hold and conversion time that can be achieved. These parameters are dependent on many factors (for
example, the prescale settings).
174 Peripheral Information and Electrical Specifications
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