C8051T603-GS(2007) View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

MFG CO.

C8051T603-GS
(Rev.:2007)

Mixed Signal OTP EPROM MCU Family

Silicon Laboratories 

C8051T600/1/2/3/4/5

SFR Definition 6.1. REF0CN: Reference Control

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Reset Value

—

—

— REGOVR REFSL TEMPE

—

— 00000000

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0 SFR Address:

0xD1

Bits7–5:

Bit4:

Bit3:

Bit2:

Bits1-0:

UNUSED. Read = 000b; Write = don’t care.

REGOVR: Regulator Reference Override.

This bit “overrides” the REFSL bit, and allows the internal regulator to be used as a refer-

ence source.

0: The voltage reference source is selected by the REFSL bit.

1: The internal regulator is used as the voltage reference, regardless of the REFSL setting.

REFSL: Voltage Reference Select.

This bit selects the source for the internal voltage reference when REGOVR is set to ‘0’.

0: VREF input pin used as voltage reference.

1: VDD used as voltage reference.

TEMPE: Temperature Sensor Enable Bit.

0: Internal Temperature Sensor off.

1: Internal Temperature Sensor on.

UNUSED. Read = 00b. Write = don’t care.

Table 6.1. External Voltage Reference Circuit Electrical Characteristics

VDD = 3.0 V; –40 to +85 °C unless otherwise specified.

Parameter

Input Voltage Range

Input Current

Conditions

Min Typ Max

0

—

VDD

Sample Rate = 500 ksps; VREF = 2.5 V

—

12

—

Units

V

µA

46

Rev. 0.5

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