C8051T322-GQR Silicon Labs, C8051T322-GQR Datasheet - Page 58

• Manufacturer Part Number: C8051T322-GQR
• Description: 8-bit Microcontrollers - MCU USB-OTP-16K-LQFP32
• Manufacturer: Silicon Labs

Specifications of C8051T322-GQR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

C8051T620/621/320/321/322/323
SFR Definition 10.1. REF0CN: Reference Control
SFR Address = 0xD1
58
Name
Reset
6:5
Bit
Type
7
4
3
2
1
0
Bit
REGOVR Regulator Reference Override.
REFBGS Reference Buffer Gain Select.
Unused
TEMPE
REFBE
REFSL
BIASE
Name
REFBGS
R/W
7
0
This bit selects between 1x and 2x gain for the on-chip voltage reference buffer.
0: 2x Gain
1: 1x Gain
Unused. Read = 00b; Write = don’t care.
This bit “overrides” the REFSL bit, and allows the internal regulator to be used as a ref-
erence source.
0: The voltage reference source is selected by the REFSL bit.
1: The internal regulator is used as the voltage reference.
Voltage Reference Select.
This bit selects the ADCs voltage reference.
0: V
1: V
Temperature Sensor Enable Bit.
0: Internal Temperature Sensor off.
1: Internal Temperature Sensor on.
Internal Analog Bias Generator Enable Bit.
0: Internal Bias Generator off.
1: Internal Bias Generator on.
On-chip Reference Buffer Enable Bit.
0: On-chip Reference Buffer off.
1: On-chip Reference Buffer on. Internal voltage reference driven on the V
REF
DD
R
used as voltage reference.
6
0
pin used as voltage reference.
R
5
0
REGOVR
R/W
Rev. 1.1
4
0
Function
REFSL
R/W
3
0
TEMPE
R/W
2
0
BIASE
R/W
1
0
REF
REFBE
pin.
R/W
0
0