ICM7228AIBI Intersil, ICM7228AIBI Datasheet - Page 6

• Manufacturer Part Number: ICM7228AIBI
• Description: IC LED DISPLAY DRVR 8DGT 28-SOIC
• Manufacturer: Intersil

Specifications of ICM7228AIBI

• Display Type: LED
• Configuration: 7 Segment
• Digits Or Characters: 8 Digits
• Current - Supply: 200µA
• Voltage - Supply: 4 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (7.5mm Width)
• Driver Case Style: SOIC
• Peak Reflow Compatible (260 C): No
• Supply Voltage Max: 5V
• Source Output Current Max: 100mA
• Leaded Process Compatible: No
• No. Of Pins: 28
• No. Of Drivers: 1
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -

Timing Diagrams
WRITE
MODE
INPUT
DATA
FIGURE 1. ICM7228A/B WRITE CYCLE
INTERDIGIT BLANKING
OUTPUT PULSES
TYPICAL DIGITS
INTERNAL SIGNAL
VALID
t
t
DS
MS
6
ADDRESS
t
DAO-DAZ
FIGURE 4. DISPLAY DIGITS MULTIPLEX (COMMON ANODE DISPLAY)
WL
WRITE
DATA
DIGIT
D2
D5
D1
D7
D8
D6
D4
D3
t
MH
t
DH
t
WH
FIGURE 3. ICM7228C WRITE CYCLE
t
AS
INTERDIGIT BLANKING
10µs (TYP)
FREE RUNNING
ICM7228
t
DS
VALID
t
WL
CONTROL WORD
TYPE OF DECODER?ID6
DECODE/NO DECODE? ID5
SHUTDOWN?ID4
DATA COMING ID7
VALID DATA
WRITE
MODE
FIGURE 2. ICM7228A/B SEQUENTIAL 8-DIGIT RAM UPDATE
320µs (TYP)
FREE RUNNING (PER DIGIT)
(D1)
t
t
WH
AH
t
DH
WRITE DATA
8 PULSES
(D8)
CONTROL WORD
TYPE OF DECODER?ID6
DECODE/NO DECODE? ID5
SHUTDOWN? ID4
DATA COMING ID7
DON’T CARE