SED1520D0A Datasheet, PDF (33/52 Pages) List of Unclassifed Manufacturers – DOT MATRIX LCD DRIVER

5.0 Electrical Characteristics
5.2 – 5.2
(Continued)
Parameter
Oscillation frequency
Reset time
Symbol
Condition
fOSC
tR
Rf = 1.0MΩ ± 2%
VSS = –5.0V
Rf = 1.0MΩ ± 2%
VSS = –3.0V
VDD = 0V, Ta = –20 ~ 75°C
Min.
Typ.
Max.
Unit
Applicable
pin
15
18
21
KHz
*9
11
16
21
1.0
1000 µs
RES
Notes:
*1. Operation over a wide range of voltages is guaranteed except where a sudden voltage
change occurs during access.
*2. Pins A0, D0–D7, E(RD), R/W (WR) and CS
*3. Pins CL, FR, M/S and RES
*4. Pins D0–D7
*5. Pin FR
*6. Pins A0, E (RD), R/W (WR), CS, CL and RES
*7. Applicable when pins D0–D7 and FR are at high impedance.
*8. This value is current consumption when a vertical stripe pattern is written at tCYC. Current
consumption during access is nearly proportionate to access frequency (tCYC). Only TDD (1)
is consumed while no access is made.
*9. Relationship between oscillation frequency, frame and Rf (SED1520FOA)
40
Ta = 25°C
30
V_SS = –5V
20
10
Duty 1/16, 1/32
200
Ta = 25°C
V_SS = –5V
100
0 0.5 1.0 1.5 2.0 2.5
Rf (MΩ)
0 0.5 1.0 1.5 2.0 2.5
Rf (MΩ)
371-1.0 S-MOS Systems, Inc. • 150 River Oaks Parkway • San Jose, CA 95134 • Tel: [phone] • Fax: [phone]