71M6513 Maxim, 71M6513 Datasheet - Page 93

• Manufacturer Part Number: 71M6513
• Description: The 71M6513 and 71M6513H are highly integrated SoCs with an MPU core, RTC, flash, and LCD driver
• Manufacturer: Maxim

VREF, VBIAS
Unless otherwise specified, VREF_DIS=0
A
1
CRYSTAL OSCILLATOR
Crystal is disconnected. Test load is series 200pF, 100kΩ connected between DGND and XOUT.
VREF
VREF
Guaranteed by design; not production tested.
PARAMETER
VREF output voltage, VNOM(25)
VREF chop step
VREF output impedance
VNOM definition
VREF temperature coefficients
TRIMBGA
TRIMSEL
VREF(T) deviation from VNOM(T)
VREF temperature coefficients
VREF(T) deviation from VNOM(T)
VREF aging
VBIAS output voltage
VBIAS output impedance
PARAMETER
Maximum Output Power to Crystal
Xin to Xout Capacitance
Capacitance to DGND
Watchdog RTC_OK threshold
This relationship describes the nominal behavior of VREF at different temperatures.
Xin
Xout
TC1 (linear)
TC2 (quadratic)
TC1 (linear)
TC2 (quadratic)
(
(
T
T
VNOM
VNOM
A Maxim Integrated Products Brand
)
)
−
−
,
,
TRIM
VNOM
VNOM
TRIMBGB
A
registers
(
(
T
T
)
)
1
max(|
max(|
,
TRIMM
1
T
T
10
10
−
−
-- If
-- If
6
6
[2:0]: See
22
22
4
TRIMBGA
|,
|,
TRIMBGA
40
40
)
)
© 2005-2011 Teridian Semiconductor Corporation
Ta = 22ºC
VREF_CAL
I
VNOM(T) = VREF(22) + (T–22)TC1 + (T–22)
Ta = -40ºC to +85ºC
Ta = 25ºC
Ta = 25ºC
Ta = -40ºC to 85ºC
I
Crystal connected
LOAD
LOAD
and
and
where x = 0.1TRIMBGB - 0.14(TRIMM[2:0]+0.5),
TRIMBGB
= 10µA, -10µA
= 1mA, -1mA
TRIMBGB
CONDITION
CONDITION
y
=
TEMP
=1,
x(33-0.28y) + 0.33y + 7.9
not available (6513) --
2
_
x(0.02-0.0002y) – 0.46
available (6513H) --
NOM
3-Phase Energy Meter IC
−
500
900
TRIM
(-2%)
1.193
(-1%)
MIN
MIN
71M6513/71M6513H
-40
-10
1
1
_
DATA SHEET
BGA
-0.341
1.195
TYP
TYP
7.0
±25
1.5
240
1.5
−
3
5
5
370000
2
TC2
1
(+2%)
(+1%)
1.197
MAX
+40
500
MAX
2.5
40
10
25
1
1
1
SEPTEMBER 2011
ppm/ºC
ppm/ºC
µV/°C
µV/°C
µV/°C
µV/ºC
UNIT
ppm/
year
UNIT
mV
kΩ
kHz
Page: 93 of 104
μW
Ω
V
V
V
V
pF
pF
pF
2
2