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AZT70 Datasheet(PDF) 8 Page - Arizona Microtek, Inc

Part # AZT70
Description  Programmable Capacitive Tuning IC
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Manufacturer  AZM [Arizona Microtek, Inc]
Direct Link  http://azmicrotek.com
Logo AZM - Arizona Microtek, Inc

AZT70 Datasheet(HTML) 8 Page - Arizona Microtek, Inc

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Arizona Microtek, Inc.
AZT70
Programmable Capacitive Tuning IC
www.azmicrotek.com
+1-480-962-5881
8
Request a Sample
May 2012, Rev 1.2
t
DA
CLK
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
bit 8
bit 9
bit 10
bit0
loaded 1st
bit10
loaded last
PV
≥ 0.6*V
DD
bit5
selected
Resulting voltage if
bit5 was high in
EEPROM
Resulting voltage if
bit5 was low in
EEPROM
≤ 0.4V
indeterminate
With an external 68k
Ω resistor pull-up to V
DD
Figure 10 – Timing diagram to read bits from EEPROM
ERASING THE EEPROM
The EEPROM can be erased by initiating a programming cycle with all DA bits set high, including bit9 and bit10. After
the programming cycle, all the EEPROM bits are set low (logical high) except for the check bit (bit0), which remains
high.
Table 5 – Erase sequence for EEPROM
Step
Action
1
Set the VDD supply voltage to +5.0V
2
Load the programming word bits all high.
3
Set the PV pin to +6V (≥5.6V, ≤6.1V) with the pulse and idle shown in timing diagram (Figure 11)
4
Verify the correct EEPROM contents by reading back the individual bits
t
DA
CLK
bit 0
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7
bit 8
bit 9
bit 10
bit0
loaded 1st
bit10
loaded last
PV
4µs
min
10ms
min
EEPROM has
been erased
(no capacitors
selected)
≥5.6V,
≤6.1V
Figure 11 – Programming Sequence for erasing the EEPROM


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