UPD77015GC NEC, UPD77015GC Datasheet - Page 15

• Manufacturer Part Number: UPD77015GC
• Description: 16 bits/ Fixed-point Digital Signal Processor
• Manufacturer: NEC

1.2 Recommended Connection for Unused Pins
Note 1. Can leave open, if no access to external data memory is
Remark
INT1 - INT4
X/Y
DA0 - DA13
D0 - D15
MRD
MWR
WAIT
HOLDRQ
BSTB
HOLDAK
SCK1, SCK2
SI1, SI2
SOEN1, SOEN2
SIEN1, SIEN2
SORQ1
SO1, SO2
SIAK1
HA0, HA1
HCS
HRD
HWR
HRE
HWE
HD0 - HD7
P0 - P3
TCK
TDO, TICE
TMS, TDI
CLKOUT
2. Can leave open, if HCS, HRD, HWR are fixed to high level.
Pin
Note1
executed in the whole of program.
O:
I/O: Input/Output pin
I:
Note2
Input pin
Output pin
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
I/O
I
I
I
I
I
I
I
I
I
I
I
I
I
connect to V
open
connect to V
open
connect to V
open
connect to V
connect to GND
open
connect to V
connect to V
open
connect to V
connect to GND, via a resistor
open
open(pull-up internally)
open
Recommended connection
DD
DD
DD
DD
DD
DD
DD
or GND, via a resistor
or GND
or GND
or GND, via a resistor
PD77015, 77017, 77018
15