GA1621 datasheet(4/5 Pages) SILVAN

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GA1621

LCD 驱动电路

森川电子科技有限公司

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GA1621 A.C. Characteristics

Test Conditions

Parameter

Sym

Min

Typ

Max

Units

VDD

Conditions

256

System Clock

fSYS1

256

KHz

On Chip RC Oscillator

32.768

System Clock

fSYS2

32.768

KHz

Crystal Oscillator

256

System Clock

fSYS3

256

KHz

External clock source

FSYS1/1024

On-chip RC oscillator

FSYS2/128

Crystal Oscillator

LCD Clock

fLCD

FSYS3/1024

External clock source

LCD Common Period

tCOM

n/fLCD

n: Number of COM

150

Serial Date Clock (WR- Pin)

fCLK1

300

KHz

Duty cycle 50%

Serial Date Clock (RD- Pin)

fCLK2

150

KHz

Duty cycle 50%

Tone Frequency

fTONE

2.0 or 4.0

KHz

On-chip RC oscillator

Serial

Interface

Reset

Pulse

Width

(Figure 3)

tCS

250

CS-

3.34

Write mode

6.67

Read mode

1.67

Write mode

WR-, RD- Input Pulse Width (Figure 1)

tCLK

3.34

Read mode

Rise/Full Time Serial Data Clock Width

(Figure 1)

tr,tf

120

Setup Time for Data to WR-, RD- Clock

Width

(Figure 1)

tsu

120

Hold Time for Data to WR-, RD- Clock

Width

(Figure 1)

120

Setup Time for Data to CS- Clock Width

(Figure 1)

tsu1

100

Hold Time for Data to CS- Clock Width

(Figure 1)

th1

100

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