Typical Applications (Continued)
8-CHARACTER LED DISPLAY
ICM7243
8-CHARACTER LED DISPLAY
8-CHARACTER LED DISPLAY
8
(Note)
8
(Note)
8
(Note)
CLR
CLR
CHAR
CLR
CHAR
CLR
CHAR
SEG
SEG
SEG
+5V
SEN
DISP FULL
SEN
DISP FULL
SEN
DISP FULL
+5V
MODE
+5V
MODE
+5V
MODE
WR
D0 - D5
CS
VDD
+5V
VSS
WR
D0 - D5
CS
VDD
+5V
VSS
WR
D0 - D5
CS
VDD
+5V
VSS
DATA
BUS 6
WR,
(CS)
CS,
(WR)
6
FIRST 8 CHARACTERS
6
SECOND 8 CHARACTERS
NTH 8 CHARACTERS
NOTE: 17 for ICM7243A, 15 for ICM7243B.
FIGURE 8. MULTICHARACTER DISPLAY USING SEQUENTIAL ACCESS MODE
+5V
+5V
100
SEG
1mA
ICM7243
2N2219
14 (100mAPEAK)
CHAR
RON = 4
GND
14mA
2N6034
1.4APEAK
GND
+5V
100
+5V
1k
+5V
1.4APEAK
2N6034
SEG
ICM7243
300
RON = 4
CHAR
1k
25
(100mAPEAK)
2N2219
GND
1k
GND
GND
FIGURE 9A. COMMON CATHODE DISPLAY
FIGURE 9B. COMMON ANODE DISPLAY
FIGURE 9. DRIVING LARGE DISPLAYS
11
FN3162.5
October 2, 2015