mc68hc05jp6pe Freescale Semiconductor, Inc, mc68hc05jp6pe Datasheet - Page 105

• Manufacturer Part Number: mc68hc05jp6pe
• Description: M68hc05 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC05JJ6/MC68HC05JP6
Freescale Semiconductor
This configuration provides several features:
Voltages are resolved by measuring the time it takes an external
capacitor to charge up to the level of the unknown input voltage being
measured. The beginning of the A/D conversion time can be started by
these means:
The end of the A/D conversion time can be captured by these means:
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Rev. 3.2
Two (2) independent voltage comparators with external access to
both inverting and non-inverting inputs
One voltage comparator can be connected as a single-slope A/D
and the other connected as a single-voltage comparator. The
possible single-slope A/D connection provides these features:
– A/D conversions can use V
– Channel access of up to four inputs via multiplexer control with
– Access to V
– Divide by 2 to extend input voltage range
– Each comparator can be inverted to calculate input offsets
– Internal sample and hold capacitor
– Direct digital output of comparator 1 to the PB4 pin
Output compare from the 16-bit programmable timer
Timer overflow from the 16-bit programmable timer
Direct software control via a register bit
Input capture in the 16-bit programmable timer
Interrupt generated by the comparator output
Software polling of the comparator output using software loop time
reference with software used to calculate ratiometric or
absolute results
independent multiplexer control allowing mixed input
connections
Analog Subsystem
DD
and V
SS
for calibration
DD
or an external voltage as a
General Release Specification
Analog Subsystem
105