PRELIMINARY
CYW43438
15.4 Recommended Operating Conditions and DC Characteristics
Functional operation is not guaranteed outside the limits shown in Table 24, and operation outside these limits for extended periods
can adversely affect long-term reliability of the device.
Table 24. Recommended Operating Conditions and DC Characteristics
Value
Element
Symbol
Unit
Minimum
3.01
Typical
Maximum
4.82
DC supply voltage for VBAT
VBAT
–
V
DC supply voltage for core
VDD
1.14
1.14
1.2
1.2
1.26
V
V
DC supply voltage for RF blocks in chip
VDDRF
1.26
VDDIO,
VDDIO_SD
DC supply voltage for digital I/O
1.71
–
3.63
V
DC supply voltage for RF switch I/Os
External TSSI input
VDDIO_RF 3.13
3.3
–
3.46
0.95
0.7
V
V
V
TSSI
Vth_POR
0.15
0.4
Internal POR threshold
–
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
V
V
V
0.25 ×
VDDIO
Input low voltage
VIL
–
Output high voltage @ 2 mA
Output low voltage @ 2 mA
VOH
VOL
0.75 × VDDIO
–
–
0.125 ×
VDDIO
Other Digital I/O Pins
For VDDIO = 1.8V:
Input high voltage
VIH
VIL
0.65 × VDDIO
–
–
–
–
V
V
0.35 ×
VDDIO
Input low voltage
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
Document Number: 002-14796 Rev. *K
Page 66 of 101
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