AT89STK-09 Atmel, AT89STK-09 Datasheet - Page 5

• Manufacturer Part Number: AT89STK-09
• Description: EVAL BOARD FOR AT83C26
• Manufacturer: Atmel

Specifications of AT89STK-09

• Main Purpose: Memory, Smart Card
• Embedded: No
• Utilized Ic / Part: AT83C26
• Primary Attributes: Manages up to 5 Smart Cards, TWI, SCIB
• Secondary Attributes: 2 DC/DC Converters, Requires a Host Microcontroller
• Processor To Be Evaluated: AT83C26
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2.1
2.2
2.3
AT89STK-09 User Guide
Configuration
Microcontroller
Connection
Power Supply
Jumper
Host
The AT89STK09 requires power supply, clock signal , smart card and TWI commands
to run. U1 connector is used to connect the AT83C26 host pins to the host microcontrol-
ler. The U1 connector pins are described on Table 2-1.
All passive components needed (inductors, capacitors) are soldered on board.
The host microcontroller signals voltage and the AT83C26 power supply are VCC. The
voltage range (VCC) is 3V to 5.5V, the maximum current consumption IVcc is about
250mA when all DC/DC convertors and LDO are activated. (Conditions : Vcc = 3V
60mA DC/DCa, 70mA DC/DCb).
The AT83C26 board has one jumper in order to set complete SC2 configuration.
The complete SC2 configuration (Smart Card including CC4 & CC8) is done by SW1
solder pad.
The host microcontroller must provide the signals:
•
•
•
•
•
Caution : TWI pull-ups have to be on the host microcontroller board
•
Caution : The logic inverter (HC04 or other) is recommended if source clock is supplied
by output crystal oscillator buffer.
•
•
•
VCC, VSS : Power supply signals - 3 - 5.5V @ 250mA
EVCC can be used when the Vcc host and Vcc are different. Generally the EVCC is
connected to VCC.
BYPASS is used to activate the low power consumption when connected to the host
microcontroller (high level must be supplied) - Generally the BYPASS is connected
to the ground.
A2, A1 : TWI address - Generally A2 = 0 and A1 = 0 during Reset
SDA, SCL : TWI signals to transmit/receive commands/status
CLK signal is connected to host clock signal
INT (Interrupt) : This signal must be connected to host interrupt input
CRST signal is connected to RST host microcontroller signal
CCLK signal is connected to the host smart card interface signal
Hardware
Section 2
7521B–SCR–10/05
2-4