English
Language : 

71M6521DE Datasheet, PDF (89/101 Pages) Teridian Semiconductor Corporation – Energy Meter IC
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 †
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
†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 – V3P3SYS to V3P3D
On resistance – VBAT to V3P3D
CONDITION
| IV3P3D | ≤ 1mA
| IV3P3D | ≤ 1mA
MIN
TYP
MAX UNIT
10
Ω
40
Ω
2.5V VOLTAGE REGULATOR
Unless otherwise specified, load = 5mA
PARAMETER
Voltage overhead V3P3-V2P5
PSSR ΔV2P5/ΔV3P3
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 ΔV2P5/ΔVBAT
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