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參數資料
| 型號： | UPD77111GK |
| 廠商： | NEC Corp. |
| 元件分類： | 數字信號處理 |
| 英文描述： | 16-BIT FIXED-POINT DIGITAL SIGNAL PROCESSORS |
| 中文描述： | 16位定點數字信號處理器 |
| 文件頁數： | 18/80頁 |
| 文件大?。?/td> | 451K |
| 代理商： | UPD77111GK |
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Data Sheet U12801EJ4V0DS00
18
μ
PD77110, 77111, 77112
1.2 Connection of Unused Pins
1.2.1 Connection of Function Pins
When mounting, connect unused pins as follows:
Pin
I/O
Recommended Connection
INT1 - INT4
Input
Connect to EV
DD
.
X/Y
Output
DA0 - DA14
Output
Leave unconnected.
D0 - D15
Note 1
I/O
Connect to EV
DD
via pull-up resistor, or connect to GND via pull-down resistor.
MRD, MWR
Output
Leave unconnected.
HOLDRQ
Input
Connect to EV
DD
.
BSTB, HOLDAK
Output
Leave unconnected.
SCK1, SCK2
Input
SI1, SI2
Input
Connect to EV
DD
or GND.
SIEN1, SIEN2
Input
SOEN1, SOEN2
Input
Connect to GND.
SORQ1
Output
SO1, SO2
Output
SIAK1
Output
Leave unconnected.
HA0, HA1
Input
Connect to EV
DD
or GND.
HCS, HRD, HWR
Input
Connect to EV
DD
.
HRE, HWE
Output
Leave unconnected.
HD0 - HD7
Note 2
I/O
P0 - P3
I/O
Connect to EV
DD
via pull-up resistor, or connect to GND via pull-down resistor.
TCK
Input
Connect to GND via pull-down resistor.
TDO, TICE
Output
Leave unconnected.
TMS, TDI
Input
Leave unconnected. (internally pulled up).
TRST
Input
Leave unconnected. (internally pulled down).
CLKOUT
Output
Leave unconnected.
Notes 1.
These pins may be left unconnected if the external data memory is not accessed in the program.
However, connect these pins as recommended in the halt and stop modes when the power
consumption must be lowered.
2.
These pins may be left unconnected if HCS, HRD, and HWR are fixed to the high level.
However, connect these pins as recommended in the halt and stop modes when the power
consumption must be lowered.
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