MA300012 Microchip Technology, MA300012 Datasheet - Page 24

• Manufacturer Part Number: MA300012
• Description: MODULE DSPIC30F SAMPLE 64QFP
• Manufacturer: Microchip Technology

Specifications of MA300012

• Module/board Type: dsPIC30F Plug-in Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: DM240001
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

dsPIC30F
8.0
Power
dsPIC30F device include:
• Real-time Clock Source Switching
• Programmable low-voltage detection
• Idle and Sleep modes with fast wake-up
8.1
Configuration bits determine the clock source upon
Power-on Reset (POR) and Brown-out Reset (BOR).
Thereafter, the clock source can be changed between
permissible clock sources. The OSCCON register
controls the clock switching and reflects system clock
related Status bits. To reduce power consumption, the
user can switch to a slower clock source.
8.2
The LVD module is used with battery operated
applications to detect when the battery voltage (the
V
near the end of the battery life for the application. The
LVD allows the application to gracefully shut down its
operation.
This feature is only available on some devices.
Figure 8-1 is a block diagram of the LVD module. A
comparator uses an internally generated reference
voltage as the set point. When the selected tap output
of the device voltage is lower than the reference
voltage, the LVD interrupt flag is set. Each node of the
resistor divider represents a “trip point” voltage. The
voltage is software programmable to any of 16 values,
or can be obtained from an external pin (LVDIN).
DS70043F-page 22
DD
of the device) drops below a threshold, which is
management
DEVICE POWER
MANAGEMENT
Real-Time Clock Source Switching
Low Voltage Detect (LVD)
services
provided
by
the
FIGURE 8-1:
LVDEN
V
DD
Internally Generated
Reference Voltage
LVDIN
External LVD
Input pin
LVD MODULE BLOCK
DIAGRAM
© 2005 Microchip Technology Inc.
4
+
-
LVDL<3.0>
LVDIF