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參數(shù)資料
| 型號(hào)： | μPD78P0308 |
| 廠商： | NEC Corp. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8 Bit Single Chip Microcontrollers |
| 中文描述： | 8位單片機(jī)微控制器 |
| 文件頁(yè)數(shù)： | 18/70頁(yè) |
| 文件大?。?/td> | 556K |
| 代理商： | ΜPD78P0308 |
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μ
PD78P0308
18
Preliminary Data Sheet
Pin Name
Input/Output
Function
RESET
Input
PROM programming mode setting.
When +5 V or +12.5 V is applied to the V
PP
pin and a low-level signal is applied to the RESET
pin, this chip is set in the PROM programming mode.
V
PP
Input
PROM programming mode setting and high voltage application during program write/verification.
A0-A16
Input
Address bus.
D0-D7
Input/output
Data bus.
CE
Input
PROM enable input/program pulse input.
OE
Input
Read strobe input to PROM.
PGM
Input
Program/program inhibit input in PROM programming mode.
V
DD
—
Positive power supply.
V
SS
—
Ground potential.
Pin Name
Input/Output
Function
After Reset
Alternate Function
ANI0-ANI7
Input
A/D converter analog input.
Input
P10-P17
AV
REF
Input
A/D converter reference voltage input
—
—
(also used for analog input).
AV
SS
—
A/D converter ground potential. Set to the same potential as V
SS0
.
—
—
RESET
Input
System reset input.
—
—
X1
Input
Crystal resonator connection for main system clock
—
—
X2
—
oscillation.
—
—
XT1
Input
Crystal resonator connection for subsystem clock
Input
P07
XT2
—
oscillation.
—
—
V
DD0
—
Positive power supply for ports.
—
—
V
SS0
—
Ground potential for ports.
—
—
V
DD1
—
Positive power supply (except for ports and analog).
—
—
V
SS1
—
Ground potential (except for ports and analog).
—
—
V
PP
—
High voltage application in program write/verify mode.
—
—
Connect directly to V
SS0
or V
SS1
in normal operating mode.
(2) Non-port pins (2/2)
2.2
Pins in PROM Programming Mode
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