UPD6379A Ver la hoja de datos (PDF) - NEC => Renesas Technology
Número de pieza
componentes Descripción
Fabricante
UPD6379A Datasheet PDF : 16 Pages
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µPD6379, 6379A, 6379L, 6379AL
4. NOTES ON USE
(1) Input signal format
• Input data must be input as 2’s complement, MSB first, and backward justification.
2’s complement is a method of expressing both positive numbers and negative numbers as binary numbers.
See the table below.
(MSB)
0111
0111
2’s Complement
1111
1111
1111
1111
Decimal Number
(LSB)
1111
1110
+32767
+32766
L.OUT, R.OUT Pin Voltage TYP. (V)
(Reference Values)Note 1
VDD = 5.0 V
VDD = 3.3 VNote 2
3.0
1.98
0000
0000
0000
0001
+1
0000
0000
0000
0000
0
2.0
1.32
1111
1111
1111
1111
–1
1000
0000
0000
0001
–32767
1000
0000
0000
0000
–32768
1.0
0.66
Notes 1. Values differ depending on IC fabrication variations, supply voltage fluctuations, and ambient
temperature.
2. µPD6379L, 6379AL
• Make sure that the delimiter of each bit of the data (SI) and the changing timing of LRCK coincide with the
falling edge of CLK.
• It is necessary that 16 clocks be input during 1 sample data period (16 bits). Make sure that the time width
of 1 bit coincides with one cycle of the clock.
• In the input data, the 16 bits preceding the change point of LRCK (shown in “1 sample data period” in Fig.
4-1, and Fig. 4-2) are considered to be valid data and are incorporated for use in D/A conversion.
10
Data Sheet S11588EJ4V0DS00
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