AC Timing Characteristics Over Temperature Range (-45°C to +85°C)
4.5 V < VDD < 5.5 V, unless otherwise specified
Symbol
Description
25°C Typ.
Min.[1]
Units
FOSC
Oscillator Frequency
57
FRF[2]
Display Refresh Rate
256
FFL[3]
Character Flash Rate
2
tST[4]
Self Test Cycle Time
4.6
28
kHz
128
Hz
1
Hz
9.2
sec
Notes:
1. Worst case values occur at an IC junction temperature of 150°C.
2. FRF = FOSC/224.
3. FFL = FOSC/28,672.
4. tST = 262,144/FOSC.
Write Cycle Timing Diagram
A0 -A4
FL
2
CE
WR
D0 -D7
INPUT PULSE LEVELS: 0.6 V to 2.4 V
1
3
6
7
8
10
9
4
2
5