TC1163 Datasheet, PDF (103/134 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller TriCore

TC1163/TC1164
Preliminary
Electrical Parameters
15) I_{AREF_MAX} is valid for the minimum specified conversion time. The current flowing during an ADC conversion
with a duration of up to t_C = 25µs can be calculated with the formula I_{AREF_MAX} = Q_CONV/t_C. Every conversion
needs a total charge of Q_CONV = 150pC from V_AREF.
All ADC conversions with a duration longer than t_C = 25µs consume an I_{AREF_MAX} = 6µA.
16) For the definition of the parameters see also Figure 4-2.
17) Applies to AIN0 and AIN1, when used as auxiliary reference inputs.
18) This represents an equivalent switched capacitance. This capacitance is not switched to the reference voltage
at once. Instead of this smaller capacitances are successively switched to the reference voltage.
19) The sampling capacity of the conversion C-Network is pre-charged to V_AREF/2 before the sampling moment.
Because of the parasitic elements the voltage measured at AINx is lower then V_AREF/2.
A/D Converter Module
f_CLC
Fractional
Divider
f_DIV
Programmable
Clock Divider
f_BC
(1:1) to (1:256)
Sample
1:4
f_{ANA Programmable} Time t_S
Counter
Arbiter
(1:20)
f_TIMER
CON.CTC
Control Unit
(Timer)
CHCONn.STC
Control/Status Logic
Interrupt Logic
External Trigger Logic
External Multiplexer Logic
Request Generation Logic
Figure 4-1 ADC0 Clock Circuit
MCA04657_mod
Data Sheet
99
V1.0, 2008-04