mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 336

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (ADC)
Data Sheet
336
AIEN
INTERRUPT
INTERNAL
DATA BUS
LOGIC
COCO
READ DDRAx/DDRBx
WRITE DDRAx/DDRBx
WRITE PTAx/PTBx
READ PTAx/PTBx
CONVERSION
COMPLETE
BUS CLOCK
CGMXCLK
RESET
logic and can be used as general-purpose I/O pins. Writes to the port
data register or data direction register will not have any affect on the port
pin that is selected by the ADC. Read of a port pin which is in use by the
ADC will return the pin condition if the corresponding DDR bit is at
logic 0. If the DDR bit is at logic 1, the value in the port data latch is read.
Figure 16-2. ADC Block Diagram
ADC DATA REGISTERS
Analog-to-Digital Converter (ADC)
ADIV[2:0]
DDRAx/DDRBx
ADRH
PTAx/PTBx
GENERATOR
CLOCK
ADC
ADC CLOCK
ADRL
ADICLK
VOLTAGE IN
DISABLE
(V
ADC
ADIN
)
DISABLE
CHANNEL
ADCH[4:0]
ADC0–ADC5
(6 CHANNELS)
MC68HC908LJ24/LK24 — Rev. 2.1
SELECT
Freescale Semiconductor
1.2V
BANDGAP
REFERENCE
PTAx/PTBx
V
V
V
REFH
REFL
LCD