UPD30121 NEC [NEC], UPD30121 Datasheet - Page 18

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

18
Notes 1.
Remark 0: low level, 1: high level, Hi-Z: high impedance
RTS#/CLKSEL1
DTR#/CLKSEL0
TxD/CLKSEL2
DCD#/GPIO15
FIRDIN#/SEL
MEMCS16#
POWERON
BATTINT#
IOCHRDY
HLDACK#
BATTINH/
MPOWER
RTCRST#
Pin Name
IRDOUT#
RSTOUT
IOCS16#
RSTSW#
HLDRQ#
MEMW#
POWER
MEMR#
FIRCLK
RTCX1
RTCX2
CLKX1
CLKX2
ZWS#
DSR#
IRDIN
SHB#
IOW#
CTS#
IOR#
CKE
RxD
2.
3.
4.
Normal operation proceeds.
This differs depending on the setting of the SCLK bit in the SDRAMMODEREG register.
Maintains the state of the previous Full-speed Mode.
Specify the input data level using a high-resistance pull up or pull down resistor.
When SCLK bit has a value of "1": outputs clock.
When SCLK bit has a value of "0": low level is output.
the RTC Reset
After Reset by
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
0
0
0
0
Note 4
Note 4
Note 4
Deadman’s Switch
or RSTSW# Signal
After Reset by the
Note 2
Hi-Z
Data Sheet U14691EJ1V0DS00
1
1
1
1
1
1
1
1
0
1
1
1
0
In the Suspend
Note 1
Note 3
Note 3
Mode
1
1
1
1
1
0
1
0
1
1
1
0
Mode or Shut Down
by the HAL Timer
In the Hibernate
Note 3
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
0
0
0
1
1
1
During a Bus
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 3
Hold
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
1
0
PD30121
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