CYW4343X
15.4 Recommended Operating Conditions and DC Characteristics
Functional operation is not guaranteed outside the limits shown in Table 30, and operation outside these limits for extended periods
can adversely affect long-term reliability of the device.
Table 30. Recommended Operating Conditions and DC Characteristics
Value
Element
DC supply voltage for VBAT
Symbol
VBAT
Minimum
Typical
Maximum Unit
3.0a
1.14
4.8b
–
V
DC supply voltage for core
VDD
1.2
1.2
–
1.26
1.26
3.63
V
V
V
DC supply voltage for RF blocks in chip
DC supply voltage for digital I/O
VDDRF
1.14
1.71
VDDIO,
VDDIO_SD
DC supply voltage for RF switch I/Os
External TSSI input
VDDIO_RF
TSSI
3.13
0.15
0.4
3.3
–
3.46
0.95
0.7
V
V
V
Internal POR threshold
Vth_POR
–
SDIO Interface I/O Pins
For VDDIO_SD = 1.8V:
Input high voltage
VIH
VIL
1.27
–
–
–
–
–
V
V
V
V
Input low voltage
–
0.58
–
Output high voltage @ 2 mA
Output low voltage @ 2 mA
For VDDIO_SD = 3.3V:
Input high voltage
VOH
VOL
1.40
–
0.45
VIH
0.625 × VDDIO
–
–
–
–
–
V
Input low voltage
VIL
–
0.25 × VDDIO V
Output high voltage @ 2 mA
Output low voltage @ 2 mA
VOH
VOL
0.75 × VDDIO
–
–
V
V
0.125 ×
VDDIO
Other Digital I/O Pins
For VDDIO = 1.8V:
Input high voltage
VIH
0.65 × VDDIO
–
–
–
–
–
V
Input low voltage
VIL
–
0.35 × VDDIO V
Output high voltage @ 2 mA
Output low voltage @ 2 mA
For VDDIO = 3.3V:
VOH
VOL
VDDIO – 0.45
–
–
V
V
0.45
Input high voltage
VIH
VIL
2.00
–
–
–
–
–
V
V
V
V
Input low voltage
–
0.80
–
Output high voltage @ 2 mA
Output low Voltage @ 2 mA
VOH
VOL
VDDIO – 0.4
–
0.40
RF Switch Control Output Pinsc
For VDDIO_RF = 3.3V:
Output high voltage @ 2 mA
Output low voltage @ 2 mA
Input capacitance
VOH
VOL
CIN
VDDIO – 0.4
–
–
–
–
V
–
–
0.40
5
V
pF
a. The CYW4343X is functional across this range of voltages. However, optimal RF performance specified in the data sheet is guaranteed only for
3.2V < VBAT < 4.8V.
b. The maximum continuous voltage is 4.8V. Voltages up to 6.0V for up to 10 seconds, cumulative duration over the lifetime of the device are
allowed. Voltages as high as 5.0V for up to 250 seconds, cumulative duration over the lifetime of the device are allowed.
c. Programmable 2 mA to 16 mA drive strength. Default is 10 mA.
Document No. 002-14797 Rev. *H
Page 91 of 128
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