Comparator Selection Function - Oki Dr.63514 User Manual

Chapter 2. Functions

2.11 Comparator Selection Function

The P7.0 and P7.1 pins in the ML63512/514 can be used as input ports or comparators. The Dr.63514
implements the input port block with discrete components and the comparator block with an ML63514
itself. However, the discrete components (circuits) in the input block influence the characteristics of the
comparator. Therefore, be sure to disconnect the port circuit connection with the CMP switch when
using the comparator. This will achieve comparator characteristics identical to those of the
ML63512/514.
Used function
Input ports
Comparator
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n Note 1 n
Since the P7.0 and P7.1 pin input port circuits are not connected when the comparator usage
is set (i.e. when the CMP switch is on), they cannot be used as input ports in this mode.
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n Note 2 n
With the input port usage setting (i.e. when the CMP switch is off), although comparator can
be used, the Dr.63514 cannot provide the same characteristics as the ML63512/514.
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2-40
CMP switch
OFF
ON
ON
OFF
Figure 2-18 CMP Switch
ON
OFF