External Signal Description - ROHS MC9S08QE128 Reference Manual

12-bit Analog-to-Digital Converter (S08ADCV1)
Compare true
3
MCU STOP
ADHWT
AD0
AD27
V
REFH
V
REFL
10.2

External Signal Description

The ADC module supports up to 28 separate analog inputs. It also requires four supply/reference/ground
connections.
180
ADCSC1
1 2
Control Sequencer
ADVIN
SAR Converter
Data Registers
Compare Value Registers
Figure 10-2. ADC Block Diagram
Table 10-2. Signal Properties
Name
AD27–AD0
V
REFH
V
REFL
V
DDAD
V
SSAD
MC9S08QE128 MCU Series Reference Manual, Rev. 2
ADCCFG
Clock Gen
ADACK
ADCK
Clock
Divide
1
AIEN
2
COCO
Compare true
3
Compare
Logic
ADCSC2
Function
Analog Channel inputs
High reference voltage
Low reference voltage
Analog power supply
Analog ground
Async
Bus Clock
÷2
ALTCLK
Interrupt
Freescale Semiconductor