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ST7920 Datasheet(PDF) 40 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) 40 Page - Sitronix Technology Co., Ltd.

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ST7920
V4.0
40/49
2008/08/18
AC Characteristics (TA = -30℃ ~ 85℃, VDD = 4.5V) Parallel Mode Interface
Symbol
Characteristics
Test Condition
Min.
Typ.
Max.
Unit
Internal Clock Operation
fOSC
OSC Frequency
R = 33K
480
540
600
KHz
External Clock Operation
fEX
External Frequency
-
480
540
600
KHz
Duty Cycle
-
45
50
55
%
TR,TF
Rise/Fall Time
-
-
-
0.2
µs
Write Mode (Writing data from MPU to ST7920)
TC
Enable Cycle Time
Pin E
1200
-
-
ns
TPW
Enable Pulse Width
Pin E
140
-
-
ns
TR,TF
Enable Rise/Fall Time
Pin E
-
-
25
ns
TAS
Address Setup Time
Pins: RS,RW,E
10
-
-
ns
TAH
Address Hold Time
Pins: RS,RW,E
20
-
-
ns
TDSW
Data Setup Time
Pins: DB0 - DB7
40
-
-
ns
TH
Data Hold Time
Pins: DB0 - DB7
20
-
-
ns
Read Mode (Reading Data from ST7920 to MPU)
TC
Enable Cycle Time
Pin E
1200
-
-
ns
TPW
Enable Pulse Width
Pin E
140
-
-
ns
TR,TF
Enable Rise/Fall Time
Pin E
-
-
25
ns
TAS
Address Setup Time
Pins: RS,RW,E
10
-
-
ns
TAH
Address Hold Time
Pins: RS,RW,E
20
-
-
ns
TDDR
Data Delay Time
Pins: DB0 - DB7
-
-
100
ns
TH
Data Hold Time
Pins: DB0 - DB7
20
-
-
ns
Interface Mode with LCD Driver(ST7921)
TCWH
Clock Pulse with High
Pins: CL1, CL2
800
-
-
ns
TCWL
Clock Pulse with Low
Pins: CL1, CL2
800
-
-
ns
TCST
Clock Setup Time
Pins: CL1, CL2
500
-
-
ns
TSU
Data Setup Time
Pin: D
300
-
-
ns
TDH
Data Hold Time
Pin: D
300
-
-
ns
TDM
M Delay Time
Pin: M
-1000
-
1000
ns


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