SSD1809
SOLOMON
7
REV 1.3
03/02
Figure 1 : Internal Oscillator Frequency Relationship with External Resistor Value at VDD = 3V
AC ELECTRICAL CHARACTERISTICS (Voltage Referenced to VSS, VDD=2.2 to 3.5V, TA=25°C; unless otherwise specified.)
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
FOSC
Oscillation Frequency of Display timing
generator
Resistor between OSC1 andOSC2 is 900k W
Internal Oscillator Enabled
-
50
-
kHz
FFRM
Frame Frequency in Graphic / Charac-
ter Display Mode
Frame Frequency in Low Power Icon
Mode
Normal Display Frequency
Half Display Frequency
Icon Mode A and Normal Display Frequency
Icon Mode B and Normal Display Frequency
Icon Mode C and Normal Display Frequency
Icon Mode D and Normal Display Frequency
Icon Mode A and Half Display Frequency
Icon Mode B and Half Display Frequency
Icon Mode C and Half Display Frequency
Icon Mode D and Half Display Frequency
Fosc / [2 x Mux Ratio x (Frame Freq Register + 1)]
Fosc / [4 x Mux Ratio x (Frame Freq Register + 1)]
Fosc / [48 x (Frame Freq Register + 1)]
Fosc / [64 x (Frame Freq Register + 1)]
Fosc / [96 x (Frame Freq Register + 1)]
Fosc / [144 x (Frame Freq Register + 1)]
Fosc / [96 x (Frame Freq Register +1)]
Fosc / [128 x (Frame Freq Register + 1)]
Fosc / [192 x (Frame Freq Register + 1)]
Fosc / [288 x (Frame Freq Register + 1)]
OSC
Internal Oscillation Frequency with dif-
ferent value of feedback resistor
Internal Oscillator Enabled, VDD within oper-
ation range
See Figure 1 for the relationship
500k
1.0M
1.5M
2.0M
Resistor Value between OSC1 and OSC2 (
Ω)
Oscillation
Frequency
(Hz)
260k
80k
60k
40k
20k
280k
0
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