Cypress CY8C24094 Manual De Usuario

Document Number: 38-12018 Rev. *M

Page 27 of 47

10.3.8  DC Analog PSoC Block Specifications
The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V

and -40°C 

≤ T

A

 

≤ 85°C, or 3.0V to 3.6V and -40°C ≤ T

A

 

≤ 85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and

are for design guidance only. 

–

RefHi = 3.2 x BandGap

Not Allowed

–

RefLo = Vdd/2 - BandGap

Not Allowed

–

RefLo = BandGap

Not Allowed

–

RefLo = 2 x BandGap - P2[6] (P2[6] = 0.5V)

Not Allowed

–

RefLo = P2[4] – BandGap (P2[4] = Vdd/2)

Not Allowed

–

RefLo = P2[4]-P2[6] (P2[4] = Vdd/2, P2[6] = 0.5V) P2[4] - P2[6] - 

0.048

P2[4]- P2[6] + 

0.022

P2[4] - P2[6] + 

0.092

V

Table 10-12.  3.3V DC Analog Reference Specifications (continued)

R

CT

Resistor Unit Value (Continuous Time)

–

12.2

–

k

Ω

C

SC

Capacitor Unit Value (Switched Capacitor)

–

80

–

fF

4. AGND tolerance includes the offsets of the local buffer in the PSoC block. Bandgap voltage is 

1.3V ± 0.02V

.

5. Avoid using P2[4] for digital signaling when using an analog resource that depends on the Analog Reference. Some coupling of the digital signal may appear on the 

AGND.