Cypress Semiconductor CY8C21234 Manual do Utilizador descarregar pdf (Página 24)

CY8C21634/CY8C21534

CY8C21434/CY8C21334/CY8C21234

Document Number: 38-12025 Rev. *Q Page 24 of 45

Figure 15. Basic Switch Mode Pump Circuit

DC Analog Mux Bus Specifications

Table 20 lists the guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V and -40°C

≤ T

≤ 85°C, 3.0V to 3.6V and -40°C ≤ T

≤ 85°C, or 2.4V to 3.0V and -40°C ≤ T

≤ 85°C, respectively. Typical parameters apply to

5V, 3.3V, or 2.7V at 25°C and are for design guidance only.

Battery

PSoC

Vdd

Vss

SMP

BAT

PUMP

Note

6. L

= 2 mH inductor, C

= 10 mF capacitor, D

= Schottky diode. See Figure 15

Table 20. DC Analog Mux Bus Specifications

Symbol Description Min Typ Max Units Notes

Switch Resistance to Common Analog Bus – – 400

800

Vdd ≥ 2.7V

2.4V ≤ Vdd ≤ 2.7V

VDD

Resistance of Initialization Switch to Vdd – – 800 Ω

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Cypress Semiconductor CY8C21234 Manual do Utilizador Página 24