SED1278F Datasheet, PDF (2/13 Pages) Epson Company – Dot Matrix LCD Controller Driver

s PIN CONFIGURATION
QFP5-80pin
SEG38
SEG37
SEG36
SEG35
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
65 60
55
50
45 40
70
SED1278F
75
INDEX
80
1
5
10
15
35
30
20 25
DB1
DB0
E
R/W
RS
D0
FR
VDD
XSCL
LP
V5
V4
V3
V2
V1
OSC2
SED1278F/D
s PIN DESCRIPTION
Symbol
No. of signals
Function
RS
1
Register select signal
R/W
1
Read/write select signal
T1
E
1
Read/write execute signal
DB0 to DB7
8
Data bus
LP
1
Data latching pulse
XSCL
1
Data transfer clock
FR
1
LCD AC driving signal
DO
1
Serial data
Common outputs
COM 1 to COM16
16
COM9 to COM16: non-select for 1/8 duty
COM12 to COM16: non-select for 1/11 duty
SEG1 to SEG40
V1 to V5
V_DD
V_SS
OSC1
OSC2
40
Segment outputs
5
LCD driving power (V₅≥V_SS)
1
+5V
1
0V (GND)
Used to connect resistor (typ. 91K-ohms) for oscillation;
2
OSC1 is for external clock input.
T1
RS
R/W
0
0
0
1
1
0
1
1
E
Operation
Instruction write cycle
Busy flag read cycle
1
Address counter read cycle
DD RAM or CG RAM data write cycle
1
DD RAM or CG RAM data read cycle
s ABSOLUTE MAXIMUM RATINGS
Rating
Supply voltage (1)
Supply voltage (2)
Input voltage
Output voltage
Power dissipation
Operating temperature
Storage temperature
Soldering temperature and time
Symbol
V_DD
V₁ to V₅
V_I
V_O
P_D
T_opr
T_stg
T_sol
Value
–0.3 to 7.0
–0.3 to V_DD+0.3
–0.3 to V_DD+0.3
–0.3 to V_DD+0.3
300
–20 to 75
–65 to 150
260°C•10s (at lead)
Note: The following condition must always hold true: V_DD≥V₁≥V₂≥V₃≥V₄≥V₅
2
(V_SS = 0V, Ta = 25°C)
Unit
V
V
V
V
mW
°C
°C
—