C8051T630 Datasheet, PDF (53/221 Pages) Silicon Laboratories – Mixed-Signal Byte-Programmable EPROM MCU

C8051T630/1/2/3/4/5
REF0CN
VDD
R1
External
Voltage
Reference
Circuit
VREF
EN _{Bias Generator}
IOSCEN
EN _{Temp Sensor}
To ADC, IDAC,
Internal Oscillators,
Reference,
TempSensor
To Analog Mux
EN
1x/2x 1.2V Reference
REFBE
GND
REFBGS
0
+
4.7F
0.1F
Recommended Bypass
Capacitors
0
VDD 1
Internal
Regulator
1
VREF
(to ADC)
REGOVR
Figure 9.1. Voltage Reference Functional Block Diagram
Rev. 1.0
53