ATA5429-PLUW Atmel, ATA5429-PLUW Datasheet - Page 29
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ATA5429-PLUW
Manufacturer Part Number
ATA5429-PLUW
Description
Manufacturer
Atmel
Datasheet
1.ATA5429-PLUW.pdf
(100 pages)
Specifications of ATA5429-PLUW
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Product Depth (mm)
7mm
Product Height (mm)
0.9mm
Product Length (mm)
7mm
Lead Free Status / Rohs Status
Compliant
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4.1
Figure 4-3.
4.2
4841D–WIRE–10/07
Pin CLK
Basic Clock Cycle of the Digital Circuitry
(Control register 3)
Clock Timing
N_RESET
CLK_ON
VSOUT
CLK
Pin CLK is an output to clock a connected microcontroller. The clock frequency f
as follows:
Because the enabling of pin CLK is asynchronous, the first clock cycle may be incomplete. The
signal at CLK output has a nominal 50% duty cycle.
The complete timing of the digital circuitry is derived from one clock. As shown in
on page
a divider.
T
The clock cycle of the bit check and the TX bit rate depends on the selected bit-rate range
(BR_Range) which is defined in control register 6 (see
is defined in control register 4 (see
the following formulas for further reference:
BR_Range
f
f
DCLK
DCLK
CLK
• Timing of the polling circuit including bit check
• TX bit rate
V
Thres_2
=
=
controls the following application relevant parameters:
f
---------- -
f
---------- -
XTO
27, this clock cycle T
= 2.38V (typically)
XTO
16
3
V
Thres_1
ATA5423/ATA5425/ATA5428/ATA5429
= 2.3V (typically)
DCLK
is derived from the crystal oscillator (XTO) in combination with
Table 7-13 on page
BR_Range 0: T
BR_Range 1: T
BR_Range 2: T
BR_Range 3: T
XDCLK
XDCLK
XDCLK
XDCLK
40). This clock cycle T
Table 7-20 on page
= 8
= 4
= 2
= 1
T
T
T
T
DCLK
DCLK
DCLK
DCLK
X
X
X
X
42) and XLim which
Lim
Lim
Lim
Lim
XDCLK
CLK
is defined by
is calculated
Figure 4-2
29
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