參數(shù)資料
型號(hào)： 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)： 12/66頁
文件大?。?/td> 510K
代理商： UPD78218A
12
μ
PD78217A, 78218A
P34 to P37
P23 /INTP2
P30
P31
P25/INTP4
P33/SO
P27
P33/SB0
P32
P20
P21
P22
P23/CI
P24
P25/ASCK
P26
P40 to P47
Note
P50 to P57
Note
P60 to P63
P64
Note
P65
Note
P66/AN6
P67/AN7
P70 to P75
P66/WAIT,
P67/REFRQ
TO0 to TO3
CI
R
X
D
T
X
D
ASCK
SB0
SI
SO
SCK
NMI
INTP0
INTP1
INTP2
INTP3
INTP4
INTP5
AD0 to AD7
A8 to A15
A16 to A19
RD
WR
WAIT
ASTB
REFRQ
RESET
X1
X2
EA
AN0 to AN5
AN6, AN7
AV
REF
AV
SS
V
DD
V
SS
Pin Name
I/O
Output
Input
Input
Output
Input
Input
Output
Input/output
Input/output
Input
Input/output
Output
Output
Output
Output
Input
Output
Input
Output
Input
Input
Input
Note
In case of the
μ
PD78217A, these cannot be used as ports.
Alternate
Function
2.2
NON-PORT PINS
Function
Timer output
Count clock input to 8-bit timer/counter 2
Serial data input (UART)
Serial data output (UART)
Baud rate clock input (UART)
Serial data input/output (SBI)
Serial data input (3-wire serial I/O)
Serial data output (3-wire serial I/O)
Serial clock input/output (SBI, 3-wire serial I/O)
External interrupt request
Time multiplexing address/data bus (external memory connection)
Upper address bus (external memory connection)
Upper address when extending address (external memory connection)
Read strobe into external memory
Write strobe into external memory
Wait insertion
Address (A0 to A7) latch timing output (during external memory access)
Refresh pulse output into external pseudo-static memory
Chip reset
Crystal connection for system clock oscillation (external clock input to X1
enabled)
ROM-less operating specification (external access of the same space as internal
ROM). Used high for the
μ
PD78218A and used low for the
μ
PD78217A.
Analog voltage input for A/D converter
Reference voltage apply for A/D converter
GND for A/D converter
Positive power supply
GND
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