ICM7243_05 Datasheet, PDF (9/14 Pages) Intersil Corporation – 8-Character, Microprocessor-Compatible, LED Display Decoder Driver

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
V_{DD +5V}
WR
V_{DD +5V}
WR
V_DD
+5V
D0 - D5
V_SS
CS
D0 - D5
V_SS
CS
D0 - D5
V_SS
CS
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
100Ω
SEG
1mA
ICM7243
2N2219
14Ω (100mA_PEAK)
CHAR
R_ON = 4Ω
GND
14mA
2N6034
1.4A_PEAK
GND
+5V
100Ω
+5V
1K
+5V
1.4A_PEAK
2N6034
SEG
ICM7243
300Ω
R_ON = 4Ω
CHAR
1K
25Ω
(100mA_PEAK)
2N2219
GND
1K
GND
GND
FIGURE 9A. COMMON CATHODE DISPLAY
FIGURE 9B. COMMON ANODE DISPLAY
FIGURE 9. DRIVING LARGE DISPLAYS
9
FN3162.3
October 28, 2005