ATWEBDVK-02WC Atmel, ATWEBDVK-02WC Datasheet - Page 86
![KIT DEV TCP/IP AT89C51RD2 WEBCAM](/photos/9/4/90461/atwebdvk-02wc_sml.jpg)
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: 86 of 137
- Download datasheet (2Mb)
20. ONCE
86
AT89C51RD2/ED2
®
Mode (ON- Chip Emulation)
The ONCE mode facilitates testing and debugging of systems using AT89C51RD2/ED2 without
removing the circuit from the board. The ONCE mode is invoked by driving certain pins of the
AT89C51RD2/ED2; the following sequence must be exercised:
While the AT89C51RD2/ED2 is in ONCE mode, an emulator or test CPU can be used to drive
the circuit. Table 20-1 shows the status of the port pins during ONCE mode.
Normal operation is restored when normal reset is applied.
Table 20-1.
Weak pull-
• Pull ALE low while the device is in reset (RST high) and PSEN is high.
• Hold ALE low as RST is deactivated.
ALE
up
Weak pull-
PSEN
External Pin Status During ONCE Mode
up
Port 0
Float
Weak pull-
Port 1
up
Weak pull-
Port 2
up
Weak pull-
Port 3
up
Port I2
Float
XTALA1/2
Active
4235K–8051–05/08
XTALB1/2
Active
Related parts for ATWEBDVK-02WC
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATWEBDVK-02](/photos/9/4/90454/atwebdvk-02_tmb.jpg)
Part Number:
Description:
KIT DEV TCP/IP AT89C51RD2
Manufacturer:
Atmel
Datasheet:
![ATWEBDVK-02RC](/photos/9/4/90459/atwebdvk-02rc_tmb.jpg)
Part Number:
Description:
KIT DEV TCP/IP AT89C51RD2 REMOTE
Manufacturer:
Atmel
Datasheet:
![ATWEBDVK-02VOIP](/photos/9/4/90460/atwebdvk-02voip_tmb.jpg)
Part Number:
Description:
KIT DEV TCP/IP AT89C51RD2 VOIP
Manufacturer:
Atmel
Datasheet:
![ATSTK600](/photos/9/20/92038/atstk600_tmb.jpg)
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
![U641B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
![U4082B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
![U4255BM-M](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B-P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
![TDA4470](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
![ATF22V10B-25PC](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
![AT89C51ED2-IM](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet: