mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 210

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

10.2.1 Analog Input Pins
10-2
MOTOROLA
Each of the eight analog input pins(AN[7:0]) is connected to a multiplexer in the ADC.
The multiplexer selects an analog input for conversion to digital data.
Analog input pins can also be read as digital inputs, provided the applied voltage meet
V
8-bit port (PORTADA), and referred to as PADA[7:0]. There is no data direction regis-
ter because port pins are input only.
IH
and V
IL
specification. When used as digital inputs, the pins are organized into an
CONTROL
TIMING
MODE
AND
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 10-1 ADC Block Diagram
ANALOG-TO-DIGITAL CONVERTER
INTERMODULE BUS (IMB)
RC DAC ARRAY
COMPARATOR
RESULT 6
RESULT 0
RESULT 1
RESULT 2
RESULT 3
RESULT 4
RESULT 5
RESULT 7
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INTERFACE UNIT
SAR
AND
ADC BUS
PORT ADA DATA
AND SAMPLE
BUFFER AMP
CLK SELECT/
REGISTER
PRESCALE
ANALOG
(V RH –V RL )/2
MUX
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
V RH
V RL
INTERNAL
CONNECTIONS
AN7/PADA7
AN6/PADA6
AN5/PADA5
AN4/PADA4
AN3/PADA3
AN2/PADA2
AN1/PADA1
AN0/PADA0
V DDA
V SSA SUPPLY
V RH
V RL
MC68HC16Y3/916Y3
USER’S MANUAL
REFERENCE
16 ADC BLOCK 2