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CY8C4128FNI-BL473 Fiches technique(PDF) 16 Page - Cypress Semiconductor

No de pièce CY8C4128FNI-BL473
Description  Programmable System-on-Chip
Download  47 Pages
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Fabricant  CYPRESS [Cypress Semiconductor]
Site Internet  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY8C4128FNI-BL473 Fiches technique(HTML) 16 Page - Cypress Semiconductor

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PRELIMINARY
PSoC® 4: PSoC 4XX8_BLE
Family Datasheet
Document Number: 001-94624 Rev. *K
Page 16 of 47
The possible pin connections are shown for all analog and digital peripherals (except the radio, LCD, and CSD blocks, which were
shown in Table 1). A typical system application connection diagram is shown in Figure 7.
Figure 7. System Application Connection Diagram
Power
The PSoC 4XX8_BLE device can be supplied from batteries with
a voltage range of 1.9 V to 5.5 V by directly connecting to the
digital supply (VDDD), analog supply (VDDA), and radio supply
(VDDR) pins. Internal LDOs in the device regulate the supply
voltage to the required levels for different blocks. The device has
one regulator for the digital circuitry and separate regulators for
radio circuitry for noise isolation. Analog circuits run directly from
the analog supply (VDDA) input. The device uses separate
regulators for Deep Sleep and Hibernate (lowered power supply
and retention) modes to minimize the power consumption. The
radio stops working below 1.9 V, but the device continues to
function down to 1.71 V without RF.
Bypass capacitors must be used from VDDx (x = A, D, or R) to
ground. The typical practice for systems in this frequency range
is to use a capacitor in the 1-µF range in parallel with a smaller
capacitor (for example, 0.1 µF). Note that these are simply rules
of thumb and that, for critical applications, the PCB layout, lead
inductance, and the bypass capacitor parasitic should be
simulated to design and obtain optimal bypassing.
VDDR
VDDD
VDDR
VDDA
VDDA
VDDR
VDDD
C6
C1
1.0 uF
U1
PSoC 4XXX_BLE
56-QFN
VDDD
1
XTAL32O/P6.0
2
XTAL32I/P6.1
3
XRES
4
P4.0
5
P5.0
7
P5.1
8
VSS
9
VDDR
10
GANT1
11
ANT
12
GANT2
13
VDDR
14
P4.1
6
P1.1
29
P1.2
30
P1.3
31
P1.4
32
P1.5
33
P1.6
34
P1.7
35
P2.0
37
P2.1
38
P2.2
39
P2.3
40
P2.4
41
P2.5
42
VDDA
36
Y2
32.768KHz
1
2
C4
18 pF
C3
36 pF
C2
1.0 uF
Y1
24MHz
2
4
L1
ANTENNA
C5
1.3
47 pF
24 pF
Power Supply
Bypass Capacitors
VDDD
The internal bandgap may be bypassed
with a 1-µF to 10-µF.
VDDA
0.1-µF ceramic at each pin plus bulk
capacitor 1-µF to 10-µF.
VDDR
0.1-µF ceramic at each pin plus bulk
capacitor 1-µF to 10-µF.
VCCD
1.3-µF ceramic capacitor at the VCCD pin.
VREF (optional)
The internal bandgap may be bypassed
with a 1-µF to 10-µF capacitor.


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