UPD30121 Datasheet, PDF (22/76 Pages) NEC – VR4121TM 64-/32-BIT MICROPROCESSOR

µPD30121
Pin Name
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
Internal
Processing
Note
Slew rate buffer
−
−
−
−
−
−
Schmitt input
−
−
Schmitt input
Schmitt input
Schmitt input
−
−
−
−
Schmitt input
−
−
−
−
−
−
−
−
−
External
Processing
Pull up
−
−
Resonator
Resonator
Resonator
Resonator
Resonator
−
−
−
−
−
−
−
Pull up/
Pull down
Pull up/
Pull down
−
Pull up
Pull up/
Pull down
−
Pull up
−
Pull up/
Pull down
−
−
−
−
Drive
Capability
−
40 pF
120 pF
−
−
−
−
−
−
40 pF
40 pF
−
−
−
−
40 pF
40 pF
−
−
40 pF
−
−
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
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
(2/3)
Recommended
Connection of
Unused Pins
Directly connect to VDD
Leave open
Leave open
−
Leave open
−
Leave open
Directly connect to VDD
Directly connect to VDD
Leave open
Leave open
−
−
−
Connect to GND
−
−
Connect to VDD
Connect to VDD or
GND
−
Connect to VDD
Connect to VDD or
GND
Leave open
Connect to VDD via
resistor
Connect to VDD or
GND via resistor
Leave open
Leave open
Connect to VDD or
GND via resistor
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
unnecessary.
2. No specification (−) in the Recommended Connection of Unused Pins column indicates that the pin
is always connected.
22
Data Sheet U14691EJ1V0DS00