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參數(shù)資料
| 型號： | UPD78218A |
| 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)： | 11/66頁 |
| 文件大?。?/td> | 510K |
| 代理商： | UPD78218A |
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11
μ
PD78217A, 78218A
NMI
INTP0
INTP1
INTP2/CI
INTP3
INTP4/ASCK
INTP5
SI
RxD
TxD
SCK
SO/SB0
TO0 to TO3
AD0 to AD7
A8 to A15
A16 to A19
RD
WR
WAIT/AN6
REFRQ/AN7
AN0 to AN5
2.
PIN FUNCTIONS
2.1
PORTS
Pin Name
I/O
Function
Alternate
Function
Port 0 (P0):
Established as a real-time output port (4 bits
×
2)
Direct drive of transistors capability
Port 2 (P2):
P20 cannot be used as a general-purpose port. (Non-maskable interrupt)
However, the input level can be confirmed in the interrupt routine.
The connection of the on-chip pull-up resistor can be specified as a 6-bit unit for P22
to P27 by software.
Port 3 (P3):
The input/output specifiable bit-wise.
Input mode pins specifiable for on-chip pull-up resistor connection as a batch by
software.
Port 4 (P4):
The input/output specifiable as an 8-bit batch.
The connection of the on-chip pull-up resistor specifiable as an 8-bit batch by
software.
LED direct drive capability.
Port 5 (P5):
The input/output specifiable bit-wise.
Input mode pins specifiable for on-chip pull-up resistor connection as a batch by
software.
LED direct drive capability.
Port 6 (P6):
P64 to P67 enables to specify the input/output bit-wise.
The connection of the on-chip pull-up resistor to input mode pins can be specified
as a batch for P64 to P67 by software.
Port 7 (P7)
Output
Input
Input/
output
Input/
output
Input/
output
Output
Input/
output
Input
P00 to P07
P20
P21
P22
P23
P24
P25
P26
P27
P30
P31
P32
P33
P34 to P37
P40 to
P47
Note
P50 to
P57
Note
P60 to P63
P64
Note
P65
Note
P66
P67
P70 to P75
Note
In case of the
μ
PD78217A, these cannot be used as ports.
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