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1.1
Features
AT89EVK-01 User Guide
This document describes the AT89EVK-01 evaluation kit dedicated to the AT83C24
Smart Card Reader Interface IC. This board is designed to allow an easy evaluation of
the AT83C24 on an application using the TDA8004.
This board can be connected on the TDA8004 footprint.
The AT89EVK-01 provides the following features:
Possibility to replace the TDA8004 (or TDA8024) with the AT89EVK-01 board . The
AT89EVK-01 board is soldered on the TDA8004 footprint.
The AT83C24 registers are programmed with the TWI link (SDA,SCL). The
T89C5121 microcontroller sends the TWI commands to configure the AT83C24
registers.
The configuration software is stored in T89C5121 Flash memory. The program can be
reloaded by using FLIP / BatchISP (In-System Programming tool) and an RS-232
adaptor board (CEIBO for example).
Hardware configuration allowed with switches and solder pads.
The program can be modified and reloaded with Batchisp (see 2.2.2)
Section 1
Introduction
4325C–SCR–09/04
1-3
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Summary of Contents for Atmel AT89EVK-01
- Page 1 This board can be connected on the TDA8004 footprint. Features The AT89EVK-01 provides the following features: Possibility to replace the TDA8004 (or TDA8024) with the AT89EVK-01 board . The AT89EVK-01 board is soldered on the TDA8004 footprint. The AT83C24 registers are programmed with the TWI link (SDA,SCL). The T89C5121 microcontroller sends the TWI commands to configure the AT83C24 registers.
- Page 2 Introduction AT89EVK-01 User Guide 4325C–SCR–09/04...
- Page 3 TDA8004 Mode 2.1.1 Overview The AT89EVK-01 board is soldered on the customer application by using the SO plug. If there is a problem to connect the AT89EVK-01 board on the SO plug, connectors can be added to lift the board.
- Page 4 AT83C24 pads connected to the customer application. 2.1.5 PRES, PRES\ The TWI_SEL switch is connected on an I/O of the T89C5121. The TDA8004 (TDA8024) PRES pin and PRES\ pin are connected on T89C5121 I/Os. The position of AT89EVK-01 User Guide 4325C–SCR–09/04...
- Page 5 Used for clock configuration (see §2.1.2) solder Used to connect TDA8004 clock on A2 (transparent mode). Use firmware from version 3 (at89evk01_V3.zip) SW11 no solder Used to connect a pull up resistor on RESET pin AT89EVK-01 User Guide 4325C–SCR–09/04...
- Page 6 If the user wants to modify the AT83C24 configuration, it need to reprogram the T89C5121 Flash memory by using FLIP/BatchISP software (free download on www.atmel.com) as described below. Figure 2-5. T89C5121 In System Programming Description FLIP/BatchISP software (ATMEL In System Programming software) RS-232 CEIBO MP-51RD2 board Rx, Tx signals (5V)
- Page 7 Vcc (1) Tx (4) AT89EVK01board RS-232 Rx(6) Vss(9) Figure 2-7. CEIBO “MP-51RD2 Programmer” Board and AT89EVK-01 connections 5V Power Supply 2.2.2 AT83C24 registers The Flash memory of the T89C5121 is loaded with FLIP/BatchISP if a new configuration programming is needed for the AT83C24.
- Page 8 Hardware Description Figure 2-8. Execution of at89evk01.bat (V1.0) 2-10 AT89EVK-01 User Guide 4325C–SCR–09/04...
- Page 9 AT83C24 at 4.5MHz, XTAL1 must be set at 4.5MHz - V1.0 Config3 0x270 0x80 0x80 0x80 Config4 0x271 0x0B 0x0B 0x0B Interface 0x272 0x00 0x00 0x00 Note: 1. Default values are included in hex file AT89EVK-01 User Guide 2-11 4325C–SCR–09/04...
- Page 10 Hardware Description 2-12 AT89EVK-01 User Guide 4325C–SCR–09/04...
- Page 11 Overview The AT83C24 is a smart card reader IC. A TWI bus is used to configure the AT83C24. On the AT89EVK-01 board, the T89C5121 controls theTWI link. After a reset, the T89C5121 sends commands to write values in AT83C24 registers.
- Page 12 Write 0100 XXX0 (10 + CONFIG0 6 bits) CONFIG1 CONFIG2 CONFIG3 CONFIG4 config Write 0100 XXX0 1111 1100 TIMER1 TIMER0 Timer Write 0100 XXX0 (0+INTERFACE 7 bits) Interface General 0000 0000 0000 0110 Call Reset 3-14 AT89EVK-01 User Guide 4325C–SCR–09/04...
- Page 13 Section 4 Schematics AT89EVK-01 User Guide 4-15 4325C–SCR–09/04...
- Page 14 Figure 4-1. Component Side Figure 4-2. Solder Side 4-16 AT89EVK-01 User Guide 4325C–SCR–09/04...
- Page 15 Figure 4-3. Circuit Drawing AT89EVK-01 User Guide 4-17 4325C–SCR–09/04...
- Page 16 20% Inductance 450 mA SMD Murata LQH32CN4R7M33L R2, R4, R3, R10, R11 100 K 1/16W-5% Resistor SMD R1, R5, R7, R8, R9 10 K 1/16W-5% Resistor SMD 1/16W-5% Resistor SMD AT83C24QFN AT89C5121/SSOP24 CONNECTOR Crystal 14,74 MHz 4-18 AT89EVK-01 User Guide 4325C–SCR–09/04...
- Page 17 No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems.
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