AC164139 Microchip Technology, AC164139 Datasheet - Page 356
![Graphics Display Prototype Board Graphics](/photos/28/36/283699/ac164139_sml.jpg)
AC164139
Manufacturer Part Number
AC164139
Description
Graphics Display Prototype Board Graphics
Manufacturer
Microchip Technology
Specifications of AC164139
Main Purpose
LCD Development
Embedded
No
Utilized Ic / Part
PICtail™ Plus Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Secondary Attributes
-
Primary Attributes
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AC164139
Manufacturer:
Microchip Technology
Quantity:
135
- Current page: 356 of 408
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PIC24FJ256DA210 FAMILY
27.3.1
The Watchdog Timer has an optional Fixed-Window
mode of operation. In this Windowed mode, CLRWDT
instructions can only reset the WDT during the last 1/4
of the programmed WDT period. A CLRWDT instruction
executed before that window causes a WDT Reset,
similar to a WDT time-out.
Windowed WDT mode is enabled by programming the
WINDIS Configuration bit (CW1<6>) to ‘0’.
FIGURE 27-2:
DS39969B-page 356
Sleep or Idle Mode
New Clock Source
All Device Resets
CLRWDT Instr.
PWRSAV Instr.
Exit Sleep or
Transition to
LPRC Input
SWDTEN
Idle Mode
FWDTEN
WINDOWED OPERATION
WDT BLOCK DIAGRAM
31 kHz
(5-bit/7-bit)
Prescaler
FWPSA
1 ms/4 ms
LPRC Control
Counter
WDT
27.3.2
The WDT is enabled or disabled by the FWDTEN
Configuration bit. When the FWDTEN Configuration bit
is set, the WDT is always enabled.
The WDT can be optionally controlled in software when
the FWDTEN Configuration bit has been programmed
to ‘0’. The WDT is enabled in software by setting the
SWDTEN Control bit (RCON<5>). The SWDTEN
control bit is cleared on any device Reset. The software
WDT option allows the user to enable the WDT for
critical code segments and disable the WDT during
non-critical segments for maximum power savings.
1:1 to 1:32.768
WDTPS<3:0>
Postscaler
CONTROL REGISTER
2010 Microchip Technology Inc.
WDT Overflow
Wake from Sleep
Reset
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