Specifications

S1C6S2N7 TECHNICAL HARDWARE EPSON I-43

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver)

(2) Drive duty

According to the mask option, either 1/4, 1/3 or 1/2

duty can be selected as the LCD drive duty.

Table 4.6.1 shows the differences in the number of seg-

ments according to the selected duty.

Pins Used Maximum Number Frame Frequency

in Common of Segments (when fosc = 32 kHz)

1/4 COM0–3 104 (26 × 4) 32 Hz

1/3 COM0–2 78 (26 × 3) 42.7 Hz

1/2 COM0–1 52 (26 × 2) 32 Hz

In the S1C6S2A7 (fosc = 200 kHz), the frame frequencies for 1/

4, 1/3, 1/2 duty are 24.4 Hz, 32.6 Hz and 48.8 Hz, respectively.

(3) Output specification

➀ The segment pins (SEG0–SEG25) are selected by mask

option in pairs for either segment signal output or DC

output (VDD and VSS binary output). When DC output

is selected, the data corresponding to COM0 of each

segment pin is output.

➁ When DC output is selected, either complementary

output or Pch open drain output can be selected for

each pin by mask option.

The pin pairs are the combination of SEG (2

n) and SEG (2

n +

1) (where n is an integer from 0 to 12).

Table 4.6.1

Differences according to

selected duty

Duty

Note