參數(shù)資料
型號: UPD784225GK
廠商: NEC Corp.
英文描述: 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16/8-BIT單晶片微控制器
文件頁數(shù): 15/92頁
文件大小: 687K
代理商: UPD784225GK
15
μ
PD784224, 784225, 784224Y, 784225Y
Data Sheet U12376EJ1V0DS00
5.2 Pins Other Than Port Pins (2/2)
Pin Name
I/O
Alternate Function
Function
RD
Output
P64
Strobe signal output for read operation of external memory
WR
P65
Strobe signal output for write operation of external memory
WAIT
Input
P66
To insert wait state(s) when external memory is accessed
ASTB
Output
P67
Strobe output to externally latch address information output to ports
4 to 6 to access external memory
EXA
Output
P37
External access status output
RESET
Input
System reset input
X1
Input
To connect main system clock oscillation crystal
X2
XT1
Input
To connect subsystem clock oscillation crystal
XT2
ANI0 to ANI7
Input
P10 to P17
Analog voltage input for A/D converter
ANO0, ANO1
Output
P130, P131
Analog voltage output for D/A converter
AV
REF1
To apply reference voltage for D/A converter
AV
DD
Positive power supply for A/D converter. Connected to V
DD0
.
AV
SS
GND for A/D converter and D/A converter. Connected to V
SS0
.
V
DD0
Positive power supply for port block
V
SS0
GND potential for port block
V
DD1
Positive power supply (except port block)
V
SS1
GND potential (except port block)
TEST
Connect this pin to V
SS0
directly or via pull-down resistor. For the
pull-down connection, use of a resistor with a resistance ranging
from 470
to 10 k
is recommended.
相關PDF資料
PDF描述
UPD784224 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784224GC 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784224GK 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784224Y 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
UPD784225 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
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