UPD30121 NEC [NEC], UPD30121 Datasheet - Page 31

• Manufacturer Part Number: UPD30121
• Description: VR4121TM 64-/32-BIT MICROPROCESSOR
• Manufacturer: NEC [NEC]

Data Retention Characteristics (T
Data retention voltage
Data retention input voltage, high
Notes 1. The data retention voltage is the voltage at which the operation of the Elapsed Time timer and the data
Remark The values in parentheses are the targeted values.
2. Applied to RTCRST# pin.
retention of the registers of the following peripheral units are guaranteed, and is not applied to the
internal data of the CPU core.
Parameter
BCU: BCURFCNTREG, BCUCNTREG3, SDRAMMODEREG, SROMMODEREG, SDRAMCNTREG
PUM: PMUCNTREG (15:8), PMUCNT2REG, PMUWAITREG, PMUDIVREG
RTC: ETIMELREG,
GIU:
KIU:
LED: LEDHTSREG, LEDLTSREG, LEDHLTCLREG, LEDHLTCHREG, LEDCNTREG
Note 1
RTCL1LREG,
RTCL2HREG, RTCL2CNTLREG, RTCL2CNTHREG, RTCINTREG (2:0)
GIUPODATL, GIUPODATH, GIUUSEUPNL, GIUTERMUPNL
KIUGPEN, PORTREG
Note 2
A
= 25 C)
ETIMEMREG,
RTCL1HREG,
Symbol
V
V
DDDR3
IHDR
Data Sheet U14691EJ1V0DS00
Hibernate mode, 3.3 V power supply
ETIMEHREG,
RTCL1CNTLREG,
Condition
ECMPLREG,
RTCL1CNTHREG,
0.9V
ECMPMREG,
MIN.
2.5
DDDR3
MAX.
3.45
PD30121
RTCL2LREG,
ECMPHREG,
Unit
V
V
31