參數(shù)資料
型號： UPD780024AY
廠商： NEC Corp.
元件分類： 8位微控制器
英文描述： 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述： 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存
文件頁數(shù)： 15/90頁
文件大?。?/td> 660K
代理商： UPD780024AY
μ
PD78F0034B, 78F0034BY, 78F0034B(A), 78F0034BY(A)
15
Data Sheet U16369EJ1V0DS
3.2 Non-Port Pins (2/2)
Pin Name
I/O
Function
After Reset
Alternate
Function
A8 to A15
Output
Higher address bus for extending memory externally.
Input
P50 to P57
RD
Output
Strobe signal output for read operation of external memory.
Input
P64
WR
Strobe signal output for write operation of external memory.
P65
WAIT
Input
Inserting wait for accessing external memory.
Input
P66
ASTB
Output
Strobe output which externally latches address information output to
ports 4 and 5 to access external memory.
Input
P67
ANI0 to ANI7
Input
A/D converter analog input.
Input
P10 to P17
ADTRG
Input
A/D converter trigger signal input.
Input
P03/INTP3
AV
REF
Input
A/D converter reference voltage input.
–
–
AV
DD
–
A/D converter analog power supply.
Set the voltage equal to V
DD0
or V
DD1
.
–
–
AV
SS
–
A/D converter ground potential.
Set the voltage equal to V
SS0
or V
SS1
.
–
–
RESET
Input
System reset input.
–
–
X1
Input
Connecting crystal resonator for main system clock oscillation.
–
–
X2
–
–
–
XT1
Input
Connecting crystal resonator for subsystem clock oscillation.
–
–
XT2
–
–
–
V
DD0
–
Positive power supply voltage for ports.
–
–
V
SS0
–
Ground potential of ports.
–
–
V
DD1
–
Positive power supply (except ports).
–
–
V
SS1
–
Ground potential (except ports).
–
–
V
PP
–
Applying high-voltage for program write/verify. Connect to V
SS0
or V
SS1
in normal operation mode.
–
–
NC
Note
–
Not internally connected. Leave open.
–
–
Note
NC is incorporated only in the 73-pin plastic FBGA.
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