EPVP6800 Datasheet, PDF (47/47 Pages) ELAN Microelectronics Corp – VFD Controller

14 Switching Characteristic Waveform
f OSC
OSC
50 %
ePVP6800
VFD Controller
Fig. 16 Switching Characteristic Waveform
14.1 Switching Characteristics (Ta = - 20 to + 70°C,
VDD = 4.5 to 5.5V, VEE = VDD - 45V)
Parameter
Oscillation
frequency
Propagation
delay
time
Symbol
tOSC
tPLZ
tPZL
Min.
-
-
-
Typ.
32.768
-
-
Max.
-
300
100
tTZH1
2
Rise time
tTZH2
0.5
Fall time
tTHZ 100
110
120
Unit
Test Conditions
KHz
ns _{CLK→DOUT}
ns ^{CL = 15pF, RL = 10KΩ}
SEG1/KS1 to
us
SEG4/KS4,
CL = 100pF
VEE=-25V ^{GR1 to GR8\9}
µs
GR10/SG8 to
GR11/SG7,
µs CL = 100pF, VEE=-25V ,SEGn, GRIDn
application circuit
U2
1
2
3
ePVP6800
GRID1
GRID2
VDD
VSS
32
31
30
4
5
6
7
GRID3
GRID4
GRID5
GRID6
OSCO
OSCI
PLLC
GPIOC3
29
28
27
26
8
9
10
11
12
GRID7
GRID8
GRID9
GRID10/SG10
GRID11/SEG8
GPIOC2
GPIOC1
GPIOC0
GPIO93
GPIO92
25
24
23
22
21
13
14
15
16
SEG6
SEG5
SEG4/KS4
SEG3/KS3
GPIO91
GPIO90
/RESET
VEE
20
19
18
17
SEG2/KS2
SEG1/KS1
This specification is subject to change without further notice.
CRYSTAL1
C4
C1
0.01uf
VSS ^27pf
32.768KHz
C2
27pf
VSS
VDD
R1
/RESET ^470k
C3
0.1uf
D1
1N4148
/RESET
11.28.2004 (V123) 41 of 47
VSS