ADVANCE
CYW43570
13.3 Recommended Operating Conditions and DC Characteristics
Note: Functional operation is not guaranteed outside of the limits shown in Table 23, and operation outside these limits for extended
periods can adversely affect long-term reliability of the device.
Table 23. Recommended Operating Conditions and DC Characteristics
Value
Parameter
Symbol
Unit
Minimum
3.0b
Typical
Maximum
3.6
DC supply voltage for VBAT
VBATa
–
V
V
V
V
DC supply voltage for core
VDD
1.14
1.14
1.62
1.2
1.2
1.8
1.26
1.26
1.98
DC supply voltage for RF blocks in chip
DC supply voltage for TCXO input buffer
VDDRF
WRF_TCX-
O_VDD
DC supply voltage for digital I/O
VDDIO,
VDDIO_SD
1.71
–
3.63
V
DC supply voltage for RF switch I/Os
External TSSI input
VDDIO_RF
TSSI
3.0
3.3
–
3.6
V
V
V
0.15
0.4
0.95
0.7
Internal POR threshold
Other Digital I/O Pins
For VDDIO = 1.8V:
Vth_POR
–
Input high voltage
VIH
0.65 × VDDIO
–
–
–
–
–
V
V
V
V
Input low voltage
VIL
–
0.35 × VDDIO
Output high voltage @ 2 mA
Output low voltage @ 2 mA
For VDDIO = 3.3V:
VOH
VOL
VDDIO – 0.45
–
–
0.45
Input high voltage
VIH
2.00
–
–
–
–
–
V
V
V
V
Input low voltage
VIL
–
0.80
–
Output high voltage @ 2 mA
Output low Voltage @ 2 mA
RF Switch Control Output Pinsc
For VDDIO_RF = 3.3V:
Output high voltage @ 2 mA
Output low voltage @ 2 mA
Input capacitance
VOH
VOL
VDDIO – 0.4
–
0.40
VOH
VOL
CIN
VDDIO – 0.4
–
–
–
–
V
–
–
0.40
5
V
pF
a. VBAT is the main power supply of the chip.
b. The CYW43570 is functional across this range of voltages. Optimal RF performance specified in the data sheet, however, is guaranteed only
for 3.13V < VBAT < 3.6V.
c. Programmable 2 mA to 16 mA drive strength. Default is 10 mA.
Document Number: 002-15054 Rev. *I
Page 58 of 94
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