NJU6350C 데이터 시트보기 (PDF) - Japan Radio Corporation
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NJU6350C Datasheet PDF : 9 Pages
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NJU6350
s FUNCTIONAL DESCRIPTION
1. Timer and System control data format
The NJU6350 adopts BCD code consisting of 4 bits per digit.
The calendar function including the last date of each month and the leap year calculation is executed
automatically. The system control data operates Data I/O mode set, Oscillator output set and Test mode set.
The unused bit for the Timer and System control data is always set to “ 0 ”.
< System control data format >
System control data block
MSB
LSB
C2
C1
C0
RW
C2
C1
C0 RW
Contents
0
0
0
1 Writing the data of oscillator output / test mode set
F = " 0 " : Oscilator output off (high impedance status)
F = " 1 " : Oscilator output on
T0 to 6:Test mode set ( Normaly all " 0 " )
MSB
LSB
F
T6 T5 T4
T3 T2 T1 T0
0
0
1
1 Writing the data of " Year "
0
1
0
1 Writing the data of " Month "
0
1
1
1 Writing the data of " Date "
1
0
0
1 Writing the data of " Days of Week "
1
0
1
1 Writing the data of " Hour "
1
1
0
1 Writing the data of " Minute "
1
1
1
1 Writing the data of " Second "
0
0
1
0 Reading the data of " Year "
0
1
0
0 Reading the data of " Month "
0
1
1
0 Reading the data of " Date "
1
0
0
0 Reading the data of " Days of Week "
1
0
1
0 Reading the data of " our "
1
1
0
0 Reading the data of " Minute "
1
1
1
0 Reading the data of " Second "
0
0
0
0 nvalidity
< Timer data format >
MSB
LSB
Range
Second
0
S6
S5
S4
S3
S2
S1
S0 0 ∼ 59
Minute
0
m6
m5
m4
m3
m2
m1
m0 0 ∼ 59
Hour
0
0
H5
H4
H3
H2
H1
H0 0 ∼ 23
Days of Week
DC
W2
W1
W0 1 ∼ 7
Date
0
0
D5
D4
D3
D2
D1
D0 1 ∼ 31
Month
0
0
0
M4
M3
M2
M1
M0 1 ∼ 12
Year
Y7 Y6
Y5
Y4
Y3
Y2
Y1
Y0 0 ∼ 99
Note1) The bit of " DC " in the " Days of Week " is a flag as the result of Low Voltage Detection. If the supply
voltage is reduced to the detection voltage level, then the flag of " DC " is set to "1" at the read operation,
and else the flag is always " 0 ".
(Note2) Only the data of Sec.., ..,Year as data of Timer and Calendar must be written to the NJU6350 why any
other data will be causes in malfunction of the timer counter.
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