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