Cypress MicroSystems CY8C25122/CY8C26233/CY8C26443/CY8C26643 Family Data Sheet
134
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
September 5, 2002
13.2.7
DC Analog PSoC Block Specifications
The following table lists guaranteed maximum and mini-
mum specifications include both voltage ranges, 5V +/-
5% and 3.3V +/- 10% and the temperature range -40°C
<= TA <= 85°C. Typical parameters apply to 3.3V and 5V
at 25°C and are for design guidance only.
Table 112:
3.3V DC Analog Reference Specifications
Symbol
3.3V DC Analog Reference Specifications
Minimum
Typical
Maximum
Unit
AGND = Vcc/2 1
CT Block Bias = High
1.
AGND tolerance includes the offsets of the local buffer in the PSoC block. Bandgap voltage is 1.3V ± 2%
Vcc/2 - 0.007
Vcc/2 - 0.003
Vcc/2 + 0.002 V
AGND = 2*BandGap1
CT Block Bias = High
Not Allowed
AGND = P2[4] (P2[4] = Vcc/2)
CT Block Bias = High
P24 - 0.008
P24 + 0.001
P24 + 0.009
V
AGND Column to Column Variation (AGND=Vcc/
2)1
CT Block Bias = High
-0.034
0.000
0.034
mV
REFHI = Vcc/2 + BandGap
Ref Control Bias = High
Not Allowed
REFHI = 3*BandGap
Ref Control Bias = High
Not Allowed
REFHI = 2*BandGap + P2[6] (P2[6] = 0.5V)
Ref Control Bias = High
Not Allowed
REFHI = P2[4] + BandGap (P2[4] = Vcc/2)
Ref Control Bias = High
Not Allowed
REFHI = P2[4] + P2[6] (P2[4] = Vcc/2, P2[6] =
0.5V)
Ref Control Bias = High
P2[4]+P2[6] -
0.075
P2[4]+P2[6] -
0.009
P2[4]+P2[6]+
0.057
V
REFLO = Vcc/2 - BandGap
Ref Control Bias = High
Not Allowed
REFLO = BandGap
Ref Control Bias = High
Not Allowed
REFLO = 2*BandGap - P2[6] (P2[6] = 0.5V)
Ref Control Bias = High
Not Allowed
REFLO = P2[4] – BandGap (P2[4] = Vcc/2)
Ref Control Bias = High
Not Allowed
REFLO = P2[4]-P2[6] (P2[4] = Vcc/2, P2[6] =
0.5V)
Ref Control Bias = High
P2[4]-P2[6] -
0.048
P24-P26 +
0.022
P2[4]-P2[6] +
0.092
V
Table 113:
DC Analog PSoC Block Specifications
Symbol
DC Analog PSoC Block Specifications
Minimum
Typical
Maximum
Unit
Resistor Unit Value (Continuous Time)
-
45
-
K
Ω
Capacitor Unit Value (Switch Cap)
-
70
-
fF
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