mc68hc11c0 Freescale Semiconductor, Inc, mc68hc11c0 Datasheet - Page 71

• Manufacturer Part Number: mc68hc11c0
• Description: 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

11 Analog-to-Digital Converter
MC68HC11C0
MC68HC11C0TS/D
The analog-to-digital (A/D) converter system uses an all-capacitive charge-redistribution technique to
convert analog signals to digital values. The MC68HC11C0 A/D converter system, a four-channel mul-
tiplexed-input successive-approximation converter, is accurate to 1 least significant bit (LSB). It does
not require external sample and hold circuits because of the type of charge-redistribution technique
used.
Dedicated pins V
A multiplexer allows the single A/D converter to select one of 16 analog signals.
PE0/
PE1/
PE2/
PE3/
AN0
AN1
AN2
AN3
ANALOG
ADDR 1 A/D RESULT 1
MUX
RH
and V
Freescale Semiconductor, Inc.
RESULT
RL
For More Information On This Product,
Figure 16 A/D Converter Block Diagram
provide the reference supply voltage inputs.
ADDR 2 A/D RESULT 2
SUCCESSIVE APPROXIMATION
REGISTER AND CONTROL
WITH SAMPLE AND HOLD
8-BIT CAPACITIVE DAC
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RESULT REGISTER INTERFACE
ADDR 3 A/D RESULT 3
ADCTL A/D CONTROL
ADDR 4 A/D RESULT 4
V RH
V RL
MOTOROLA
DATA BUS
INTERNAL
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