71m6543h-igtr/f Maxim Integrated Products, Inc., 71m6543h-igtr/f Datasheet - Page 133

• Manufacturer Part Number: 71m6543h-igtr/f
• Description: Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

6.2
6.3
Unless otherwise specified, all parameters listed under
Specifications
v1.0
Parameter
V3P3SYS and V3P3A Supply Voltage for precision
metering operation (MSN mode). Voltages at
VBAT and VBAT_RTC need not be present.
VBAT Voltage (BRN mode). V3P3SYS is below
the 2.8 V comparator threshold. Either V3P3SYS
or VBAT_RTC must be high enough to power the
RTC module.
VBAT_RTC Voltage. VBAT_RTC is not needed to
support the RTC and non-volatile memory unless
V3P3SYS<2.0 V
Operating Temperature
Notes:
CVLCD
CVDD
Name
CSYS
XTAL
CXS
CXL
C1
C2
1. GNDA and GNDD must be connected together.
2. V3P3SYS and V3P3A must be connected together.
Recommended External Components
Recommended Operating Conditions
V3P3SYS
V3P3A
V3P3D
are valid over the Recommended Operating Conditions provided in
XOUT
VLCD
From
VDD
XIN
XIN
Table 89: Recommended External Components
© 2008–2011 Teridian Semiconductor Corporation
Table 90: Recommended Operating Conditions
GNDA
GNDD
GNDD
GNDD
GNDD
GNDA
GNDA
XOUT
To
Function
Bypass capacitor for 3.3 V supply
Bypass capacitor for 3.3 V output
Bypass capacitor for V3P3SYS
Bypass capacitor for VDD
Bypass capacitor for VLCD pin
32.768 kHz crystal – electrically
equivalent to ECS .327-12.5-17X or
Vishay XT26T, load capacitance 12.5 pF
Load capacitor values for crystal depend
on crystal specifications and board
parasitics. Nominal values are based on
4 pF board capacitance and include an
allowance for chip capacitance.
Condition
VBAT=0 V to 3.8 V
VBAT_RTC =0 V to
3.8 V
V3P3SYS < 2.8 V
and
Max(VBAT_RTC,
V3P3SYS) > 2.0 V
V3P3SYS<2.0 V
6.4 Performance Specifications
Min
3.0
2.5
2.0
-40
71M6543F/H Data Sheet
Table 90
≥0.1 ±20%
≥1.0 ±30%
≥0.1 ±20%
Typ
0.1 ±20%
0.1 ±20%
15 ±10%
10 ±10%
32.768
Value
and
6.5 Timing
below.
Max
+85
3.6
3.8
3.8
Unit
kHz
Unit
µF
µF
µF
µF
µF
pF
pF
ºC
V
V
V
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