ST7066U
!"AC Characteristics
(TA = 25℃, VCC = 2.7V)
Symbol Characteristics
Test Condition
Min. Typ. Max. Unit
Internal Clock Operation
fOSC
OSC Frequency
R = 75KΩ
190
270
350
KHz
External Clock Operation
fEX
External Frequency
Duty Cycle
-
-
-
125
45
-
270
50
-
410
55
KHz
%
TR,TF
Rise/Fall Time
0.2
µs
Write Mode (Writing data from MPU to ST7066U)
TC
TPW
TR,TF
TAS
Enable Cycle Time Pin E
1200
460
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
Enable Pulse Width Pin E
Enable Rise/Fall Time Pin E
25
-
Address Setup Time Pins: RS,RW,E
Address Hold Time Pins: RS,RW,E
0
TAH
10
80
10
-
TDSW
TH
Data Setup Time
Data Hold Time
Pins: DB0 - DB7
Pins: DB0 - DB7
-
-
Read Mode (Reading Data from ST7066U to MPU)
TC
TPW
TR,TF
TAS
Enable Cycle Time Pin E
1200
480
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
Enable Pulse Width Pin E
-
25
-
Enable Rise/Fall Time Pin E
Address Setup Time Pins: RS,RW,E
Address Hold Time Pins: RS,RW,E
0
TAH
10
-
-
TDDR
TH
Data Setup Time
Data Hold Time
Pins: DB0 - DB7
Pins: DB0 - DB7
320
-
10
Interface Mode with LCD Driver(ST7065)
TCWH
TCWL
TCST
TSU
Clock Pulse with High Pins: CL1, CL2
800
800
500
300
300
0
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
Clock Pulse with Low Pins: CL1, CL2
Clock Setup Time Pins: CL1, CL2
-
-
Data Setup Time
Data Hold Time
M Delay Time
Pin: D
Pin: D
Pin: M
-
-
TDH
TDM
2000
V2.0
2001/03/01
32/42
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