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71M6521DE Datasheet, PDF (89/101 Pages) Teridian Semiconductor Corporation – Energy Meter IC | |||
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SUPPLY CURRENT
PARAMETER
V3P3A + V3P3SYS current
VBAT current
71M6521DE/71M6521FE
Energy Meter IC
DATASHEET
JANUARY 2008
CONDITION
MIN
TYP
MAX UNIT
Normal Operation,
V3P3A=V3P3SYS=3.3V
6.1
7.7
mA
MPU_DIV=3 (614kHz) CKOUT_E=00,
CE_EN=1,
RTM_E=0, ECK_DIS=1, ADC_E=1,
-300
ICE_E=0
+300
nA
V3P3A + V3P3SYS current vs.
MPU clock frequency
Same conditions as above
0.5
mA/
MHz
V3P3A + V3P3SYS current,
Write Flash
Normal Operation as above, except
write Flash at maximum rate, CE_E=0,
ADC_E=0
9.1
10
mA
VBAT=3.6V
BROWNOUT mode
48
120
µA
VBAT current â
LCD Mode, 25°C
LCD mode, over temperature
SLEEP Mode, 25°C
Sleep mode, over temperature
5.7
8.5
µA
15
µA
2.9
5.0
µA
10
µA
â Current into V3P3A and V3P3SYS pins is not zero if voltage is applied at these pins in brownout, LCD or sleep modes.
V3P3D SWITCH
PARAMETER
On resistance â V3P3SYS to V3P3D
On resistance â VBAT to V3P3D
CONDITION
| IV3P3D | ⤠1mA
| IV3P3D | ⤠1mA
MIN
TYP
MAX UNIT
10
â¦
40
â¦
2.5V VOLTAGE REGULATOR
Unless otherwise specified, load = 5mA
PARAMETER
Voltage overhead V3P3-V2P5
PSSR ÎV2P5/ÎV3P3
CONDITION
Reduce V3P3 until V2P5
drops 200mV
RESET=0, iload=0
MIN
TYP MAX UNIT
440
mV
-3
+3
mV/V
LOW POWER VOLTAGE REGULATOR
Unless otherwise specified, V3P3SYS=V3P3A=0, PB=GND (BROWNOUT)
PARAMETER
CONDITION
MIN
TYP
V2P5
ILOAD=0
2.0
2.5
V2P5 load regulation
ILOAD=0mA to 1mA
VBAT voltage requirement
ILOAD=1mA,
Reduce VBAT until
REG_LP_OK=0
PSRR ÎV2P5/ÎVBAT
ILOAD=0
-50
MAX
2.7
30
3.0
50
UNIT
V
mV
V
mV/V
v1.0
© 2005-2008 TERIDIAN Semiconductor Corporation
Page: 89 of 101
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