Specifications

I-70 EPSON S1C62N82 TECHNICAL HARDWARE

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Analog Voltage Comparator)

Analog Voltage Comparator

The S1C62N82 Series have a built-in analog voltage com-

parator that compares two analog input voltages to produce

result data 0 or 1 in register CMPDT, according to the com-

pared voltages, CMPP and CMPM. The configuration of the

analog voltage comparator circuit is shown in Figure 4.10.1.

The voltage comparator has two analog voltage inputs,

CMPP (non-inverting input, +) and CMPM (inverting input,

-). When the voltage comparator is turned on by control

will be stored in register CMPDT. Therefore, the result in

the register will indicate whether CMPP is greater than

CMPM (when CMPDT = 1) or smaller than CMPM (when

CMPDT = 0).

4.10

Configuration of

analog voltage

comparator

CMPON

Output

control

Power

control

Data bus (D1)

Address (0FBH)

Data bus (D0)

Address (0FBH)

CMPP

CMPM

CMPDT

Fig. 4.10.1

Configuration of analog

voltage comparator circuit