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NJU3552 데이터 시트보기 (PDF) - Japan Radio Corporation
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NJU3552
4-BIT SINGLE CHIP OTP MICRO CONTROLLER
Japan Radio Corporation
NJU3552 Datasheet PDF : 14 Pages
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NJU3552
s
ELECTRICAL CHARACTERISTICS AC CHARACTERISTICS 2 SERIAL INTERFACE
PARAMETER
SYM
BOL
CONDITIONS
Serial Operating
Frequency
f
SC
Internal Clock
External Clock
Clock Pulse Width
Low-Level
t
SCL
Internal Clock
V
DD
=
2.7~3.6V
f
OSC
=2MHz
V
DD
=3.6~5.5V
f
OSC
=4MHz
External Clock
V
DD
=2.7~3.6V
Clock Pulse Width
High-Level
t
SCH
Internal Clock
f
OSC
=2MHz
V
DD
=3.6~5.5V
f
OSC
=4MHz
External Clock
SDI setup Time
To SCK
t
DS
SDI Hold time
To SCK
t
DH
SDO Data
Fix Time To SCK
t
DCD
* The dividing ratio of the internal clock is 1/2.
(V
SS
=0V, V
DD
=2.7~5.5V, Ta= -20~75
°
C)
MIN
TYP
MAX UNIT
(1/12)
×
f
OSC
*
Hz
500k
3.0
1.5
µ
s
1.0
3.0
1.5
µ
s
1.0
0.5
µ
s
0.5
µ
s
0.5
µ
s
s
AC CHARACTERISTICS 2 SERIAL INTERFACE TIMING CHART
SCK
1/f
SC
t
SCL
t
SCH
V
IH1
V
IL1
SDI(O)
SDO/SDI(O)
t
DS
t
DH
INPUT DATA
V
IH1
V
IL1
t
DCD
V
OH
V
OL1
OUTPUT DATA
-9-
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