ST7070 Datasheet, PDF (38/51 Pages) Sitronix Technology Co., Ltd. – Dot Matrix LCD Controller/Driver

ST7070
AC Characteristics
In 6800 interface
(TA = 25°C, VCC = 5V)
Symbol Characteristics
Test Condition
Min. Typ. Max.
Internal Clock Operation
f_OSC
OSC Frequency R = 91KΩ
190 270 350
External Clock Operation
f_EX
External Frequency
-
125 270 410
Duty Cycle
-
45 50 55
Tr,Tf
Rise/Fall Time
-
-
-
0.2
Write Mode (Writing data from MPU to ST7070)
T_CYC
Enable Cycle Time
Pin E
(except clear display)
40
-
-
T_PW Enable Pulse Width Pin E
20
-
-
Tr,Tf Enable Rise/Fall Time Pin E
-
-
25
T_AS Address Setup Time Pins: RS,RW,E
0
-
-
T_AH
Address Hold Time Pins: RS,RW,E
10
-
-
T_DS
Data Setup Time Pins: DB0 - DB7
20
-
-
T_DH
Data Hold Time Pins: DB0 - DB7
10
-
-
Read Mode (Reading Data from ST7070 to MPU)
T_CYC
T_PW
Tr,Tf
Enable Cycle Time Pin E
Enable Pulse Width Pin E
Enable Rise/Fall Time Pin E
1200 -
-
430
-
-
-
-
25
T_AS Address Setup Time Pins: RS,RW,E
T_AH
Address Hold Time Pins: RS,RW,E
0
-
-
10
-
-
T_OD
Output Delay Time Pins: DB0 - DB7
-
-
390
T_OH
Output Hold Time Pins: DB0 - DB7
10
-
-
Interface Mode with LCD Driver(ST7921)
T_CWH
T_CWL
T_CST
T_SU
T_DH
Clock Pulse with High Pins: CL1, CL2
Clock Pulse with Low Pins: CL1, CL2
Clock Setup Time Pins: CL1, CL2
Data Setup Time Pin: D
Data Hold Time Pin: D
800
-
-
800
-
-
500
-
-
300
-
-
300
-
-
T_DM
M Delay Time Pin: M
0
- 2000
Unit
KHz
KHz
%
µs
us
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V1.4
38/51
2009/04/29