ATAKSTK511-9 Atmel, ATAKSTK511-9 Datasheet - Page 26
![KIT RF MODULE 915MHZ FOR STK500](/photos/14/9/140923/atakstk511-9_sml.jpg)
ATAKSTK511-9
Manufacturer Part Number
ATAKSTK511-9
Description
KIT RF MODULE 915MHZ FOR STK500
Manufacturer
Atmel
Series
SmartRF®r
Type
Transmitter, Receiver, ASK, FSKr
Specifications of ATAKSTK511-9
Frequency
915MHz
Wireless Frequency
915 MHz
Modulation
ASK, FSK
Operating Voltage
5 V
Antenna
External Whip
For Use With/related Products
ATSTK500
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
1925C–AVR–3/03
Hardware Description
3.8.1
3-16
Target V
VTARGET
CC
Settings,
VTARGET controls the supply voltage to the target AVR microcontroller sockets. It can
either be controlled from AVR Studio or supplied from an external source. If the VTAR-
GET jumper is mounted, the on-board supply voltage is connected. The on-board
supply voltage can be adjusted to 0 - 6V from AVR Studio. Always verify the respective
datasheet for the AVR device operating voltage before adjusting VTARGET voltage.
Using the on-board supply voltage, approximately 0.5A can be delivered to the target
section. See “Appendix A” in Section 10.
If the VTARGET jumper is disconnected, target V
source at one of the VTG pins on the PORT headers. Figure 3-21 explains VTARGET
jumper options.
When using an external source for VTARGET, the user must control that VTARGET is
at a higher voltage level than AREF (analog reference voltage). Always connect com-
mon ground (GND) when using an external VTARGET voltage.
Figure 3-21. VTARGET Jumper Options
The STK500 master microcontroller controls the target voltage using the internal PWM.
Figure 3-22 shows the internal connection of the VTARGET signal.
Figure 3-22. VTARGET Connection
Note:
On-board VTARGET supply disconnected
On-board VTARGET supply connected (default)
Jumper not Mounted
Jumper Mounted
Master
MCU
The green LED will light when there is a voltage available on the VTG NET. It’s
impossible to use the debug or programming area of STK500 without VTG.
Rd
ADC
Wr
VTARGET
VTARGET
AREF
AREF
PWM
10 - 15V
VIN
Voltage
Regulator
0 - 6V
CC
must be supplied from an external
VTARGET
Jumper
AVR STK500 User Guide
Green LED
VTG NET