71M6521DE/71M6521FE
Energy Meter IC
DATASHEET
JANUARY 2008
CRYSTAL OSCILLATOR
PARAMETER
CONDITION
Crystal connected
MIN
TYP
MAX
1
3
UNIT
μW
pF
Maximum Output Power to Crystal
XIN to XOUT Capacitance
Capacitance to DGND
XIN
5
5
pF
pF
XOUT
VREF, VBIAS
Unless otherwise specified, VREF_DIS=0
PARAMETER
VREF output voltage, VNOM(25)
VREF chop step
CONDITION
Ta = 22ºC
MIN
1.193
TYP
1.195
MAX
1.197
50
UNIT
V
mV
VREF_CAL =1,
ILOAD = 10µA, -10µA
VNOM(T) =VREF(22)+(T −22)TC1+(T −22)2 TC2
VREF output impedance
VNOM definitionA
2.5
kΩ
V
VREF temperature coefficients
+7.0
-0.341
µV/ºC
µV/°C2
ppm/
TC1
TC2
VREF aging
±25
year
VREF(T) deviation from VNOM(T)
VREF(T) −VNOM(T) 106
Ta = -40ºC to +85ºC
-40
+40
ppm/ºC
VNOM
62
Ta = 25ºC
Ta = -40ºC to 85ºC
(-1%)
(-4%)
1.6
1.6
(+1%)
(+4%)
V
V
VBIAS voltage
A This relationship describes the nominal behavior of VREF at different temperatures.
LCD DRIVERS
Applies to all COM and SEG pins.
CONDITION
With respect to VLCD
PARAMETER
VLC2 Max Voltage
VLC1 Voltage,
1/3 bias
MIN
-0.1
TYP
MAX
0+.1
UNIT
V
With respect to 2*VLC2/3
With respect to VLC2/2
-4
-3
0
+2
%
%
½ bias
VLC0 Voltage,
1/3 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.
Page: 90 of 101
© 2005-2008 TERIDIAN Semiconductor Corporation
v1.0
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
