ATWEBDVK-02WC Atmel, ATWEBDVK-02WC Datasheet - Page 87
ATWEBDVK-02WC
Manufacturer Part Number
ATWEBDVK-02WC
Description
KIT DEV TCP/IP AT89C51RD2 WEBCAM
Manufacturer
Atmel
Series
@Webr
Datasheet
1.ATWEBDVK-02RC.pdf
(137 pages)
Specifications of ATWEBDVK-02WC
Main Purpose
*
Embedded
*
Utilized Ic / Part
AT89C51RD2
Primary Attributes
*
Secondary Attributes
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 87 of 137
- Download datasheet (2Mb)
21. Power-off Flag
4235K–8051–05/08
The power-off flag allows the user to distinguish between a “cold start” reset and a “warm start”
reset.
A cold start reset is the one induced by V
applied to the device and could be generated for example by an exit from power-down.
The power-off flag (POF) is located in PCON register (Table 21-1). POF is set by hardware
when V
ing the user to determine the type of reset.
Table 21-1.
PCON - Power Control Register (87h)
Reset Value = 00X1 0000b
Not bit addressable
Number
SMOD1
Bit
7
7
6
5
4
3
2
1
0
CC
rises from 0 to its nominal voltage. The POF can be set or cleared by software allow-
Mnemonic
PCON Register
SMOD1
SMOD0
SMOD0
POF
GF1
GF0
IDL
Bit
PD
6
-
Description
Serial port Mode bit 1
Set to select double baud rate in mode 1, 2 or 3.
Serial port Mode bit 0
Cleared to select SM0 bit in SCON register.
Set to select FE bit in SCON register.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Power-Off Flag
Cleared by software to recognize the next reset type.
Set by hardware when V
software.
General-purpose Flag
Cleared by user for general-purpose usage.
Set by user for general-purpose usage.
General-purpose Flag
Cleared by user for general-purpose usage.
Set by user for general-purpose usage.
Power-down mode bit
Cleared by hardware when reset occurs.
Set to enter power-down mode.
Idle mode bit
Cleared by hardware when interrupt or reset occurs.
Set to enter idle mode.
5
-
POF
CC
4
switch-on. A warm start reset occurs while V
CC
rises from 0 to its nominal voltage. Can also be set by
GF1
3
AT89C51RD2/ED2
GF0
2
PD
1
CC
IDL
0
is still
87
Related parts for ATWEBDVK-02WC
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
KIT DEV TCP/IP AT89C51RD2
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
KIT DEV TCP/IP AT89C51RD2 REMOTE
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
KIT DEV TCP/IP AT89C51RD2 VOIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet: