AT89STK-05 Atmel, AT89STK-05 Datasheet - Page 6

• Manufacturer Part Number: AT89STK-05
• Description: KIT STARTER FOR AT89C5131
• Manufacturer: Atmel

Specifications of AT89STK-05

• Main Purpose: *
• Embedded: *
• Utilized Ic / Part: AT89C5131
• Primary Attributes: *
• Secondary Attributes: *
• Processor To Be Evaluated: AT89C5131A
• Interface Type: RS-232, USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

4245A–USB–11/04
Hardware Description
2.2
2-4
Power Supply
The on-board power supply circuitry allows various power supply configurations.
The power source can be:
The voltage output can be the direct power source, regulated at 5V or 3.3V.
The power supply selection is performed using the JP2, JP3, JP4 and JP5 jumpers.
The power supply can be turned on/off using the “power” switch (SW6). Once the power
is established, the power LED (D9) is lit.
Figure 2-2. Different Power Configurations
Regulation
3.3V Regulate
5V Regulate
Direct Input
–
–
–
V
V
External power supply (from 6 to 12V) or 9V battery
Power
BUS
BUS
Source
from USB (5V)
from USB (5V) through the current limiter
VCC
VCC
VCC
VBUS
LIM
LIM
LIM
PWR.S.
PWR.S.
PWR.S.
PWR
PWR
PWR
3.3V
3.3V
3.3V
5V
5V
5V
REG
REG
REG
VCC
VCC
VCC
Current Limiter
VBUS and
LIM
LIM
LIM
PWR.S.
PWR.S.
PWR.S.
AT89C5131A Starter Kit Hardware User Guide
PWR
PWR
PWR
3.3V
3.3V
3.3V
5V
5V
5V
REG
REG
REG
VCC
VCC
VCC
External
LIM
LIM
LIM
PWR.S.
PWR.S.
PWR.S.
PWR
PWR
PWR
3.3V
3.3V
3.3V
5V
5V
5V
REG
REG
REG