UPD30121 NEC [NEC], UPD30121 Datasheet - Page 22

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

22
HLDRQ#
HLDACK#
CKE
RTCX1
RTCX2
CLKX1
CLKX2
FIRCLK
BATTINH/
BATTINT#
MPOWER
POWERON
POWER
RSTSW#
RTCRST#
RxD
TxD/CLKSEL2
RTS#/CLKSEL1
CTS#
DCD#/GPIO15
DTR#/CLKSEL0
DSR#
IRDIN
IRDOUT#
FIRDIN#/SEL
DDIN/GPIO45
DDOUT/GPIO44
DRTS#/GPIO46
DCTS#/GPIO47
Note Intermediate-level input is enabled when the MPOWER pin is set for low-level output.
Remarks 1. No specification ( ) in the External Processing column indicates that the external processing is
Pin Name
2. No specification ( ) in the Recommended Connection of Unused Pins column indicates that the pin
unnecessary.
is always connected.
Slew rate buffer
Schmitt input
Schmitt input
Schmitt input
Schmitt input
Schmitt input
Processing
Internal
Note
Processing
Resonator
Resonator
Resonator
Resonator
Resonator
Pull down
Pull down
Pull down
Pull down
External
Pull up/
Pull up/
Pull up/
Pull up/
Pull up
Pull up
Pull up
Data Sheet U14691EJ1V0DS00
Capability
120 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
Drive
I/O Circuit
Type
A
A
A
A
B
A
A
B
B
B
A
A
A
A
B
A
A
A
A
A
A
A
A
A
Directly connect to V
Directly connect to V
Directly connect to V
Connect to V
Connect to V
Connect to V
Connect to V
Connect to V
Connect to GND
GND via resistor
GND via resistor
Recommended
Connect to V
Connect to V
Connection of
Unused Pins
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
resistor
GND
GND
PD30121
DD
DD
DD
DD
DD
DD
DD
(2/3)
via
or
or
or
or
DD
DD
DD