CY8C20X34 CYPRESS [Cypress Semiconductor], CY8C20X34 Datasheet - Page 108

• Manufacturer Part Number: CY8C20X34
• Description: Technical Reference Manual (TRM)
• Manufacturer: CYPRESS [Cypress Semiconductor]

Internal Voltage References
15.2
This register is associated with the Internal Voltage References. The Internal Voltage References are trimmed for gain and
temperature coefficient using the BDG_TR register. The register description below has an associated register table showing
the bit structure.
15.2.1
The Bandgap Trim Register (BDG_TR) is used to adjust the
bandgap and add an RC filter to Agnd.
It is strongly recommended that the user not alter the
value of the bits in this register.
Bits 7 to 5: TC[2:0]. These bits are for setting the tempera-
ture coefficient inside the bandgap voltage generator.
The value of these bits is used to trim the temperature coef-
ficient. Their value is set to the best value for the device dur-
ing boot. The value of these bits should not be changed.
108
1,EAh
Add.
BDG_TR
Name
Register Definitions
BDG_TR Register
Bit 7
TC[2:0]
Bit 6
Bit 5
Bit 4
Bits 4 to 0: V[4:0]. These bits are for setting the gain in the
reference buffer. 32 steps of 2.129 mV are available.
The value of these bits is used to trim the bandgap refer-
ence. Their value is set to the best value for the device dur-
ing boot. The value of these bits should not be changed.
For additional information, refer to the
page
195.
Bit 3
V[4:0]
Bit 2
PSoC CY8C20x34 TRM, Version 1.0
Bit 1
BDG_TR register on
Bit 0
Access
RW : 50