ePVP6800
VFD Controller
9 RC/Crystal OSC
9.1General Description
This oscillator is designed for the ePVP6800 chip as clock source.
9.2Features
ꢁ RC oscillator: 32.768K Hz
ꢁ Operating voltage: 2.2~5.5V.
ꢁ Operating temperature: -20 oC ~ 70 oC
9.3Block Diagram
27pf
OSCI
27pf
OSCO
VSS
Fig. 12 RC/Crystal OSC Block Diagram
9.4Pin Description
Name
XIN
I/O Type
Description
Crystal or RC oscillator connection pin
Crystal oscillator output pin
Power supply (+) pin
Remarks
I
O
-
XOUT
VDD
VSS
-
Power supply (–) pin
9.5Electrical
(Condition : VDD = 4.5 to 5.5V, Ta = -20°C to 70°C )
Parameters
Starting oscillation voltage
Stable time
Sym.
Vs
Min.
Typ.
2.0
5
Max.
3.2
10
Unit
V
Conditions
-
-
Ts
clk
mA
%
Vdd = 5.0V
Vdd = 5.0V
Current consumption
Idd
-
2
3
Duty cycle
45
-
50
1
55
Frequency/Voltage deviation
Frequency/Temperature deviation
Frequency vs. Process deviation
∂f/∂V
∆f
1.5
2
%
-
1
%
-
±6
±10
%
This specification is subject to change without further notice.
11.28.2004 (V123) 35 of 47
ELAN [ ELAN MICROELECTRONICS CORP ]
