Analog to Digital (ATD) Module
MC1321x Reference Manual, Rev. 1.6
20-2
Freescale Semiconductor
20.1.3
Block Diagram
shows the functional structure of the ATD module.
Figure 20-1. ATD Block Diagram
ADDRESS
CONTROL
R/W DATA
CTL
DATA
JUSTIFICATION
INTERRUPT
CONVERSION REGISTER
SAR_REG
<9:0>
CONVERSION CLOCK
PRESCALER
BUSCLK
CLOCK
PRESCALER
CTL
STATUS
STATE
MACHINE
CONVERSION MODE
CONTROL BLOCK
CONTROL AND
REGISTERS
CTL
RESULT REGISTERS
INPUT
MUX
= INTERNAL PINS
= CHIP PADS
V
DDAD
V
SS
V
SSAD
V
DD
AD1P0
AD1P1
AD1P2
AD1P3
AD1P4
AD1P5
AD1P6
AD1P7
V
REFL
V
REFH
ANALOG
DIGITAL
POWERDOWN
SUCCESSIVE APPROXIMATION REGISTER
ANALOG-TO-DIGITAL CONVERTER (ATD) BLOCK
STATUS
Содержание freescale semiconductor MC13211
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