SS1621 datasheet(6/15 Pages) ETC2

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SS1621

p. 6

Last update: 2008-06-03 04:36

A.C. Characteristics

Test Conditions

Sym.

Parameter

VDD

Conditions

Min.

Typ.

Max.

Unit

—

256

—

kHz

SYS1

System Clock

On-chip RC oscillator

—

256

—

kHz

—

32.768

—

kHz

SYS2

System Clock

Crystal oscillator

—

32.768

—

kHz

—

256

—

kHz

SYS3

System Clock

External clock source

—

256

—

kHz

On-chip RC oscillator

—

SYS1/1024

—

Crystal oscillator

—

SYS2/128

—

LCD

LCD Clock

—

External clock source

—

SYS3/1024

—

COM

LCD Common Period

n: Number of COM

—

n/f

LCD

—

150

kHz

CLK1

Serial Data Clock (WR Pin)

Duty cycle 50%

—

300

kHz

—

kHz

CLK2

Serial Data Clock (RD Pin)

Duty cycle 50%

—

150

kHz

TONE

Tone Frequency

On-chip RC oscillator

—

2.0 or 4.0

—

kHz

Serial Interface Reset Pulse Width

(Figure 3)

—

250

—

Write mode

3.34

—

Read mode

6.67

—

μs

Write mode

1.67

—

CLK

, RD Input Pulse Width

(Figure 1)

Read mode

3.34

—

μs

r, tf

Rise/Fall Time Serial Data Clock

Width

(Figure 1)

—

120

—

Setup Time for DATA to WR, RD

Clock Width

(Figure 2)

—

120

—

Hold Time for DATA to WR, RD

Clock Width

(Figure 2)

—

120

—

su1

Setup Time for CS to WR, RD

Clock Width

(Figure 3)

—

100

—

Hold Time for CS to WR, RD

Clock Width

(Figure 3)

—

100

—

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