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ST7920 Datasheet(PDF) 43 Page - Sitronix Technology Co., Ltd.

Part No. ST7920
Description  Chinese Fonts built in LCD controller/driver
Download  49 Pages
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Manufacturer  SITRONIX [Sitronix Technology Co., Ltd.]
Direct Link  http://www.sitronix.com.tw
Logo SITRONIX - Sitronix Technology Co., Ltd.

ST7920 Datasheet(HTML) 43 Page - Sitronix Technology Co., Ltd.

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ST7920
V4.0
43/49
2008/08/18
AC Characteristics (TA = -30℃ ~ 85℃, VDD = 4.5V) Serial Mode Interface
Symbol
Characteristics
Test Condition
Min.
Typ.
Max.
Unit
Internal Clock Operation
fOSC
OSC Frequency
R = 33K
470
530
590
KHz
External Clock Operation
fEX
External Frequency
-
470
530
590
KHz
Duty Cycle
-
45
50
55
%
TR,TF
Rise/Fall Time
-
-
-
0.2
µs
TSCYC
Serial clock cycle
Pin E
400
-
-
ns
TSHW
SCLK high pulse
width
Pin E
200
-
-
ns
TSLW
SCLK low pulse width
Pin E
200
-
-
ns
TSDS
SID data setup time
Pins RW
40
-
-
ns
TSDH
SID data hold time
Pins RW
40
-
-
ns
TCSS
CS setup time
Pins RS
60
-
-
ns
TCSH
CS hold time
Pins RS
60
-
-
ns
AC Characteristics (TA = -30℃ ~ 85℃, VDD = 2.7V) Serial Mode Interface
Symbol
Characteristics
Test Condition
Min.
Typ.
Max.
Unit
Internal Clock Operation
fOSC
OSC Frequency
R = 18K
470
530
590
KHz
External Clock Operation
fEX
External Frequency
-
470
530
590
KHz
Duty Cycle
-
45
50
55
%
TR,TF
Rise/Fall Time
-
-
-
0.2
µs
TSCYC
Serial clock cycle
Pin E
600
-
-
ns
TSHW
SCLK high pulse
width
Pin E
300
-
-
ns
TSLW
SCLK low pulse width
Pin E
300
-
-
ns
TSDS
SID data setup time
Pins RW
40
-
-
ns
TSDH
SID data hold time
Pins RW
40
-
-
ns
TCSS
CS setup time
Pins RS
60
-
-
ns
TCSH
CS hold time
Pins RS
60
-
-
ns


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