Specifications

S1C6S2N7 TECHNICAL SOFTWARE EPSON II-21

CHAPTER 3: PERIPHERAL CIRCUITS (Special Use Output Ports)

In addition to the regular DC, special output can be selected

for output ports R00 and R01, as shown in Table 3.3.2.

Figure 3.3.1 shows the structure of output ports R00–R03.

Control of the spe-

cial use output port

Table 3.3.2

Special output

Fig. 3.3.1

Structure of output ports

R00–R03

FOUT or BUZZER

BUZZER

R00

R01

Pin Name When Special Output is Selected

Address

(0F3H)

Data bus

(R03)

(R02)

(R01)

(R00)

Mask option

R03

R02

R01

R00

FOUT

BUZZER