AT89EVK-01
AT89EVK-01 Datasheet
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.
| Part | Datasheet |
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AT89EVK-01 |
AT89EVK-01 (pdf) |
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| Section 1 Introduction 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 AT89EVK-01 User Guide Introduction AT89EVK-01 User Guide Section 2 Hardware Description TDA8004 Mode 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. Figure General Description AT89EVK01board SO plug AT83C24 extra connectors TDA8004 footprint Customer board Clock signal CLK Input signals of the TDA8004 footprint are connected to AT83C24. Output signals of the TDA8004 footprint are provided by AT83C24. The program stored in the Flash memory configures the AT83C24 registers once after the reset. The functionalities of the TDA8004 are provided by the AT83C24. Remarks: The AT89EVK-01 board power supply comes from the TDA8004 footprint. The program stored in the Flash memory configures the AT83C24 registers once after the reset. The AT89EVK-01 board needs a clock signal. The AT89EVK-01 board needs a clock signal for T89C5121 XTAL1 pin and for AT83C24 CLK pin . AT89EVK-01 User Guide Hardware Description Two solutions are proposed for the clock generation waveform generator or crystal. Figure External Waveform Generator for Clock waveform generator AT83C24 ATMEL AT83C24 SO plug AT89C5121 RESET XTAL1 SCL SDA Rx Tx Smart Card Clock Signal CCLK Power Supply PRES, Figure Crystal for Clock AT83C24 ATMEL AT83C24 14.74MHz SO plug AT89C5121 RESET XTAL1 |
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