71M6521FE-IGT/F Maxim Integrated Products, 71M6521FE-IGT/F Datasheet - Page 90

• Manufacturer Part Number: 71M6521FE-IGT/F
• Description: IC ENERGY METER 32K FLASH 64LQFP
• Manufacturer: Maxim Integrated Products

Specifications of 71M6521FE-IGT/F

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

†
GNDD and XOUT to GNDD (combining pin, trace and crystal capacitance) should be 35pF to 37pF.
*Exceeding this limit will distort the LCD waveforms on other pins.
Page: 90 of 107
PARAMETER
3.3V Supply Voltage (V3P3SYS, V3P3A)
V3P3A and V3P3SYS must be at the
same voltage
VBAT
Operating Temperature
Maximum input voltage on DIO/SEG pins
configured as DIO input. *
Depending on trace capacitance, higher or lower values for CXS and CXL must be used. Capacitance from XIN to
NAME
CSYS
CXS
CXL
C2P5
XTAL
C1
C2
†
†
V3P3SYS
V3P3A
V3P3D
FROM
XOUT
V2P5
XIN
XIN
RECOMMENDED EXTERNAL COMPONENTS
RECOMMENDED OPERATING CONDITIONS
AGND
DGND
DGND
DGND
AGND
AGND
XOUT
TO
FUNCTION
Bypass capacitor for 3.3 V supply
Bypass capacitor for 3.3 V output
Bypass capacitor for V3P3SYS
Bypass capacitor for V2P5
32.768 kHz crystal – electrically similar to ECS
.327-12.5-17X or Vishay XT26T, load capaci-
tance 12.5 pF
Load capacitor for crystal (exact value depends
on crystal specifications and parasitic capaci-
tance of board).
CONDITION
Normal Operation
Battery Backup
No Battery
Battery Backup
BRN and LCD modes
SLEEP mode
MISSION mode
BROWNOUT mode
LCD mode
MIN
-40
3.0
3.0
2.0
0
Externally Connect to V3P3SYS
TYP
3.3
71M6521DE/DH/FE Data Sheet
V3P3SYS+0.3
VBAT+0.3
VBAT+0.3
MAX
+85
≥0.1±20%
≥1.0±30%
3.6
3.6
3.8
3.8
0.1±20%
0.1±20%
27±10%
27±10%
VALUE
32.768
UNIT
UNIT
kHz
ºC
µF
µF
µF
µF
pF
pF
V
V
V
V
V
V
V
Rev 2