Chapter 3
134
••••
Peripheral Control
eSL/eSLS Series (+ eSLZ000) User’s Manual
3.12 Voltage Regulator 5V / 3V
Item
Resource
Power supply pin
RVIN, RVOUT
Operation mode
Normal mode (50mA output current)
Standby mode (Low power consumption)
The ELAN eSL Series chips are equipped with an on-chip linear regulator with
low quiescent current and small drop out voltage. This regulator supports two
operation modes, i.e., Standby mode with low power consumption, and Normal
mode with 50mA output current.
If the system supply voltage is 3V, the RVIN and RVOUT pins must be
connected together to ground. If the voltage is 5V, the IOVDD_PWM,
IOVDD_PB, IOVDD_PC are connected to 5V source voltage while
VDD_CPU, VDD_PM, VDD_OSC, VDD_ICE and AVDD_AD, AVDD_DA
must be connected to the regulator output voltage pin RVOUT to obtain a 3V
power.
NOTE
The RVOUT must connect 10uF capacitor to ground when regulator enable.
Since the Regualtor output current in normal mode is 50mA, the Built-in Regulator is for
internal peripheral use only such as kernel, program memory, OSC, A/D and D/A.
If user want to turn regulator off, the RVIN and RVOUT must be short to prevent power
consumption.
Support Voltage
Power Supply
5V and 3V both
IOVDD_PWM
IOVDD_PB
IOVDD_PC
3V only
VDD_CPU
VDD_PM
VDD_OSC
VDD_ICE
AVDD_AD
AVDD_DA
Содержание eSL Series
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