參數(shù)資料
型號: μPD78P058FY
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位單片機微控制器
文件頁數(shù): 15/74頁
文件大小: 520K
代理商: ΜPD78P058FY
15
μ
PD78P058FY
(2) Non-port pins (2/2)
Pin Name
Input/Output
Function
After Reset
Alternate Function
PCL
Output
Clock output (for trimming main system clock and
subsystem clock)
Input
P35
BUZ
Output
Buzzer output
Input
P36
RTP0 to RTP7
Output
Real-time output port which outputs data in syn-
chronization with trigger
Input
P120 to P127
AD0 to AD7
Input/output
Low-order address/data bus when expanding
memory externally
Input
P40 to P47
A8 to A15
Output
High-order address bus when expanding memory
externally
Input
P50 to P57
RD
Output
Strobe signal output for the external memory read
operation
Input
P64
WR
Strobe signal output for the external memory write
operation
Input
P65
WAIT
Input
Wait insertion when accessing external memory
Input
P66
ASTB
Output
Strobe output to externally latches address infor-
mation which is output to ports 4 and 5 for
accessing external memory
Input
P67
ANI0 to ANI7
Input
Analog input of A/D converter
Input
P10 to P17
ANO0, ANO1
Output
Analog output of D/A converter
Input
P130, P131
AV
REF0
Input
Reference voltage input of A/D converter
AV
REF1
Input
Reference voltage input of D/A converter
AV
DD
Analog power supply of A/D converter (shared with
the port power supply)
AV
SS
Ground potential of A/D converter and D/A
converter (shared with the port ground potential)
RESET
Input
System reset input
X1
Input
Main system clock oscillation crystal connection
X2
XT1
Input
Subsystem clock oscillation crystal connection
Input
P07
XT2
V
DD
Positive power supply (except for port)
V
PP
High-voltage applied during program write/verify.
Connected to V
SS
in normal operating mode.
V
SS
Ground potential (except for port)
Cautions
1. The AV
DD
pin functions as both an A/D converter power supply and a port power supply. When
the
μ
PD78P058FY is used in applications where the noise generated inside the microcontroller
needs to be reduced, connect the AV
DD
pin to another power supply which has the same
potential as V
DD
.
2. The AV
SS
pin functions as both grounds of an A/D converter and D/A converter and of a port.
When the
μ
PD78P058FY is used in applications where the noise generated inside the microcontroller
needs to be reduced, connect the AV
SS
pin to a ground line other than V
SS
.
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