Chapter 10 Analog-to-Digital Converter (ADC12B_LBA_V1)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
359
10.2.2
Block Diagram
Figure 10-2. ADC12B_LBA Block Diagram
Successive
Approximation
Register (SAR)
and C-DAC
VSSA
ANx
ext.
MUX
Result List
Result_0
Result_1
..........
..........
Sample & Hold
VDDA
VRH_0
VRH_1
Sequence Abort Int.
+
-
Comparator
Clock
Prescaler
System Clock
ADC Clock
Seq_abort
Trigger
Restart
...........
..........
...........
...........
...........
...........
...........
Result 63
.....
AN2
AN1
AN0
Conversion
(RAM)
DMA access
Command
Comm_0
Comm_1
..........
..........
...........
..........
...........
...........
...........
...........
...........
Comm 63
Sequence
(RAM/
DMA access
List
Error
handler
active
Active
Alternative-
Sequence
Command
List
Idle/
LoadOK
FlowCtrl Issue
Error/
see reference
manual for
connectivity
ADC
Temperature
Sense
VREG_sense
Internal_7
Internal_6
Internal_5
Internal_4
Internal_3
Internal_2
Channel
int.
MUX
Channel
(Conversion Flow, Timing, Interrupt)
Control Unit
Conversion Int.
(RAM/
information
(EN)
Data Bus
Alternative
Result
List
(RAM)
VRL_0
VRL_1
Int.
regarding ADC
internal interface
PIM
+
-
Final
Buffer
Buffer
AMP
NVM)
NVM)
ADC12B_LBA