AT89STK-11 Atmel, AT89STK-11 Datasheet - Page 6

• Manufacturer Part Number: AT89STK-11
• Description: KIT STARTER FOR AT89C51RX2
• Manufacturer: Atmel
• Type: MCUr

Specifications of AT89STK-11

• Contents: Evaluation Board, Software and Documentation
• Processor To Be Evaluated: AT89C51Rx
• Interface Type: RS-232, SPI, TWI
• For Use With/related Products: AT89C51Rx2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7676B–8051–08/07
Hardware Description
2.2
Figure 2-2. Block Diagram of AT89STK-11
2.3
2.3.1
2.3.1.1
2-5
External
Power
Block Diagram
Power Supply
Power Supply
Sources
JACK PWR
Connector
Power Supply
SPI
3V or 5V
16MHz
Quartz
EA
RST
ISP
INT0
INT1
Figure 2-2 shows the functional block diagram of the AT89STK-11, with the I/O usage.
The on-board power supply circuitry allows various power supply configurations. This
gives the user the capability to power the devices in the 3V and in the 5V voltage range.
The power supply source can come from two different and exclusive sources:
The Jack power connector implemented on board is a female Jack connector with inter-
nal 2.1mm conductor. It requires a male JACK outlet with 2.1mm capability.
No specific polarization is mandatory as on-board diode rectifier gives a protection
against inadvertent polarization invertion.
When using the JACK power supply, the board is powered with a 5V voltage.
either from the JACK PWR connector
either from the 2-point sip EXT connector.
Leds:
PWR
ALE
Full UART
PC Host
C51
PLCC44
User LEDs
TWI
User Push Buttons
P0
P1
P2
P3
AT89STK-11 Hardware User Guide
Expansion
Area