TC1920 Datasheet, PDF (38/78 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller

TC1920
Preliminary
Analog to Digital Converter (ADC)
Figure 13 shows a global view of the ADC module kernel with the module specific
interface connections.
V _SSA
V _DDM
V _AGND
V _{DDA V SSM} V_AREF
C lock
f_ADC
C on tro l
Address
Decoder
SR0
SR1
Interrupt
C on tro l
SR2
SR3
ADC
M odule
Kernel
Port
C o n tro l
ASGT
ETR, EGT
Interrupt
Q TR , Q G T ^Inputs
TTR, TGT
EMUX0
EMUX1
EMUX2
AIN0
AIN1
AIN5
E X I0IN
E X I7IN
A D E X T IN
SW0TR=0 SW0GT=1
T C 1 92 0 _ A D C _ blo ck dia g ram
Figure 13 General Block Diagram of the ADC module
The on-chip ADC module of the TC1920 is an analog to digital converter with 8-bit, 10-
bit or 12-bit resolution including sample & hold functionality. The A/D converter operates
by the method of the successive approximation. A multiplexer selects between up to 6
analog input channels. Conversion requests are generated either under software control
or by hardware. An automatic self-calibration adjusts the ADC module to changing
temperatures or process variations.
Data Sheet
34
V 1.3, 2003-10