DS_6612_001
78M6612 Data Sheet
5.4.9 Crystal Oscillator
Parameter
Condition
Min
Typ
Max
Unit
µW
pF
Maximum Output Power to Crystal
XIN to XOUT Capacitance
Crystal connected
1
3
Capacitance to DGND
XIN
XOUT
5
5
pF
pF
5.4.10 VREF, VBIAS
Unless otherwise specified, VREF_DIS=0
Parameter
Condition
Min
Typ
Max
Unit
V
VREF output voltage, VNOM(25)
VREF chop step
Ta = 22ºC
1.193
1.195 1.197
50
mV
VREF_CAL =1,
ILOAD = 10 µA, -10 µA
VNOM (T) =VREF(22) + (T − 22)TC1+ (T − 22)2 TC2
VREF output impedance
VNOM definitionA
2.5
kΩ
V
VREF temperature coefficients
µV/ºC
TC1
TC2
+7.0
-0.341
µV/°C2
ppm/
year
VREF aging
±25
VREF(T) deviation from VNOM(T)
VREF(T) −VNOM (T) 106
ppm/º
C
Ta = -40ºC to +85ºC
-40
+40
VNOM
62
Ta = 25 ºC
Ta = -40 ºC to 85 ºC
(-1%)
(-4%)
1.6
1.6
(+1%)
(+4%)
V
V
VBIAS voltage
A This relationship describes the nominal behavior of VREF at different temperatures.
5.4.11 LCD Drivers
Applies to all COM and SEG pins.
Parameter
Condition
Min
Typ
Max
Unit
VLC2 Max Voltage
With respect to VLCD
-0.1
0+.1
V
VLC1 Voltage,
⅓ bias
With respect to 2*VLC2/3
With respect to VLC2/2
-4
-3
0
+2
%
%
½ bias
VLC0 Voltage,
⅓ bias
With respect to VLC2/3
With respect to VLC2/2
-3
-3
+2
+2
%
%
½ bias
VLCD is V3P3SYS in MISSION mode and VBAT in BROWNOUT and LCD modes.
5.4.12
Rev. 1.2
95
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
