Rainbow Electronics 71M6542G - Manual (Page 141)

v1.1 © 2008–2011 Teridian Semiconductor Corporation 141
6.4.3 Battery Monitor
Table 98: Battery Monitor Performance Specifications (TEMP_BAT= 1)
Parameter Condition Min Typ Max Unit
BV: Battery Voltage
(definition)
MSN mode, TEMP_PWR = 1
BRN mode,
TEMP_PWR=TEMP_BSEL
𝐵𝑉 = 3.3𝑉 + (𝐵𝑆𝐸𝑁𝑆𝐸 − 142) ∙ 0.0246𝑉 + 𝑆𝑇𝐸𝑀𝑃
∙ 297𝜇𝑉
𝐵𝑉 = 3.291𝑉 + (𝐵𝑆𝐸𝑁𝑆𝐸 − 142) ∙ 0.0255𝑉 + 𝑆𝑇𝐸𝑀𝑃
∙ 328𝜇𝑉
V
Measurement Error






− ⋅
1 100
VBAT
BV
VBAT =
2.0 V
2.5 V
3.0 V
4.0 V -7.5
-5
-3
-3
7.5
5
3
5 %
Input impedance in
continuous measurement,
MSN mode.
V(VBAT_RTC)/I(VBAT_RTC) V3P3 = 3.3 V,
TEMP_BSEL = 0,
TEMP_PER = 111,
VBAT_RTC = 3.6 V,
1 M
Ω
Load applied with BCURR
IBAT(BCURR=1) - IBAT(BCURR=0)
V3P3 = 3.3 V 50 100 140 µA
6.4.4 Temperature Monitor
Table 99. Temperature Monitor
Parameter Condition Min Typ Max Unit
Temperature Measurement
Equation
In MSN, TEMP_PWR =1:
𝑇𝑒𝑚𝑝 = 0.325 ∙ 𝑆𝑇𝐸𝑀𝑃 + 22
In BRN, TEMP_PWR = TEMP_BSEL:
𝑇𝑒𝑚𝑝 = 0.325 ∙ 𝑆𝑇𝐸𝑀𝑃 + 0.00218 ∙ 𝐵𝑆𝐸𝑁𝑆𝐸 2 − 0.609 ∙ 𝐵𝑆𝐸𝑁𝑆𝐸 + 64.4
°C
Temperature Error
T
A
=+22 °C
-2 +2 °C
VBAT_RTC charge per
measurement
TEMP_BSEL = 0,
TEMP_PWR=0,
SLP Mode,
VBAT_RTC = 3.6 V
16 µC
Duration of temperature
measurement after setting
TEMP_START
(see note 1) TEMP_PWR = 0,
TEMP_PER = 7,
SLP Mode,
VBAT_RTC = 3.6 V
Force V3P3D = 1.0 V 15 60 ms
Notes:
1. Guaranteed by design; not production tested.