Oki Dr.63514, User Manual, Page: 61 / 101

Chapter 2. Functions
2-40
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 CMP switch
Input ports OFF
Comparator ON
ON
OFF
ON
OFF
BACKUP
38400 19200 9600 4800
SETICE
48/64 CMP
Figure 2-18 CMP Switch
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.
________________________________________________________________________________________________________________________________
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.
________________________________________________________________________________________________________________________________