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ADE7763ARSZ Scheda tecnica(PDF) 6 Page - Analog Devices

Il numero della parte ADE7763ARSZ
Spiegazioni elettronici  Single-Phase Active and Apparent Energy Metering IC
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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ADE7763
Data Sheet
Rev. C | Page 6 of 56
TIMING CHARACTERISTICS
AVDD = DVDD = 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 3.579545 MHz XTAL, TMIN to TMAX = −40°C to +85°C.
Table 2. Timing Characteristics1, 2
Parameter
Spec
Unit
Test Conditions/Comments
Write Timing
t1
50
ns min
CS falling edge to first SCLK falling edge.
t2
50
ns min
SCLK logic high pulse width.
t3
50
ns min
SCLK logic low pulse width.
t4
10
ns min
Valid data setup time before falling edge of SCLK.
t5
5
ns min
Data hold time after SCLK falling edge.
t6
4
μs min
Minimum time between the end of data byte transfers.
t7
3200
ns min
Minimum time between byte transfers during a serial write.
t8
100
ns min)
CS hold time after SCLK falling edge.
Read Timing
t93
4
μs min
Minimum time between read command (i.e., a write to communication
register) and data read.
t10
50
ns min
Minimum time between data byte transfers during a multibyte read.
t11
30
ns min
Data access time after SCLK rising edge following a write to the
communication register.
t124
100
ns max
Bus relinquish time after falling edge of SCLK.
10
ns min
t135
100
ns max
Bus relinquish time after rising edge of CS.
10
ns min
1 Sample tested during initial release and after any redesign or process change that could affect this parameter. All input signals are specified with tr = tf = 5 ns (10% to
90%) and timed from a voltage level of 1.6 V.
2 See Figure 3, Figure 4, and the Serial Interface section.
3 Minimum time between read command and data read for all registers except waveform register, which is t9 = 500 ns min.
4 Measured with the load circuit in Figure 2 and defined as the time required for the output to cross 0.8 V or 2.4 V.
5 Derived from the measured time taken by the data outputs to change 0.5 V when loaded with the circuit in Figure 2. The measured number is then extrapolated back
to remove the effects of charging or discharging the 50 pF capacitor. This means that the time quoted in the timing characteristics is the true bus relinquish time of
the part and is independent of the bus loading.
DIN
SCLK
CS
t2
t3
t1
t4
t5
t7
t6
t8
COMMAND BYTE
MOST SIGNIFICANT BYTE
LEAST SIGNIFICANT BYTE
1
0
A4
A5
A3
A2
A1
A0
DB7
DB0
DB7
DB0
t7
Figure 3. Serial Write Timing
SCLK
CS
t1
t10
t13
0
0
A4
A5
A3
A2
A1
A0
DB0
DB7
DB0
DB7
DIN
DOUT
t11
t11
t12
COMMAND BYTE
MOST SIGNIFICANT BYTE
LEAST SIGNIFICANT BYTE
t9
Figure 4. Serial Read Timing


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