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R7KA8M2AFDCAM Arkusz danych(PDF) 264 Page - Renesas Technology Corp

Numer części R7KA8M2AFDCAM
Szczegółowy opis  Renesas Microcontrollers
PDF  295 Pages
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Producent  RENESAS [Renesas Technology Corp]
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Table 2.114
Battery backup function characteristics (2 of 2)
Conditions: VCC = VCC_DCDC = VCC_USB = 1.62 to 3.63 V, VBATT = 1.62 to 3.63 V
Parameter
Symbol
Min
Typ
Max
Unit
Test conditions
Backup domain power-down detection level
VPDR (BATR)
1.43
1.47
1.52
V
Figure 2.148
Time delay in assertion of the reset signal for
the backup domain*3
tp (PDRL)
—
—
2000
µs
Time delay in negation of the reset signal for the
backup domain
tp (PDRH)
—
—
3000
VBATT monitor operation stabilization time
(after VBATTMNSELR.VBTMNSEL is changed
to 1)
tMONWT
—
—
4.2
µs
—
VBATT voltage monitor level
VMONBATT
—
VBATT
/ 6
—
V
—
VBATT current increase (when
VBATTMNSELR.VBTTMNSEL is 1 compared to
the case that VBATTMNSELR.VBTTMNSEL is
0)
IVBATTSELB
—
1.35
2.00
µA
—
VCC current increase (when
VBATTMNSELR.VBTTMNSEL is 1 compared to
the case that VBATTMNSELR.VBTTMNSEL is
0)
IVBATTSELC
—
15
25
µA
—
Note 1. The VCC-off period for starting power supply switching indicates the period in which VCC is below the minimum value of the voltage
level for switching to battery backup (VDETBATT).
In addition, this period indicates the time tVOFFP when VCC is below the minimum value of voltage detection levels VPOR1.
Note 2. Stable time when VBTBPCR2.VDETLVL is changed or VBTBPCR1. BPWSWSTP is changed from 1 to 0.
Note 3. When the VBATT_R recovers within this period, the backup domain reset signal may not be generated.
VCC
tVOFFBATT
VDETBATT
VBATTSW
VBATT
VCC supply
VBATT supply
VCC supply
Backup power area
Figure 2.147
Battery backup function characteristics
RA8M2 Datasheet
2. Electrical Characteristics
R01DS0438EJ0130 Rev.1.30
Feb 27, 2026
Page 264 of 295



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