Datasheet

Analog-to-Digital Converter (S08ATDV3)
MC9S08GB60A Data Sheet, Rev. 2
226 Freescale Semiconductor
Figure 14-2. ATD Block Diagram
14.2 Signal Description
14.2.1 Overview
The ATD supports eight input channels and requires 4 supply/reference/ground pins. These pins are listed
in Table 14-1.
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
AD 1P 2
AD1P3
AD1P4
AD1P5
AD 1P 6
AD1P7
V
REFL
V
REFH
ANALOG
DIGITAL
POWERDOWN
SUCCESSIVE APPROXIMATION REGISTER
ANALOG-TO-DIGITAL CONVERTER (ATD) BLOCK
STATUS