res06b0004_h8300lslp| Application Note
APPLICATION NOTE
H8/300L SLP Series
Implementation of I2C (Port) to Three I2C Devices (3I2Cport)
Introduction
This application note provides an overview of the I2C bus interface. It also demonstrates how to integrate and interface multiple I2C devices to the H8/38024 SLP series through software control of its two general I/O pins: Microchip 24AA16 16-Kbytes I2C Serial EEPROM (read/write) Maxim MAX6626 12-bit Temperature Sensor (read/write) MAX6953EPL 2-wire Interfaced 4-digit 5 7 Matrix LED Display Driver (write only)
Target Device
H8/38024
Contents
1. 2. 3. 4. 5. 6. 7. I C Interface Overview .................................................................................................................... 2
2
Microchip 24AA16 E PROM ............................................................................................................. 3 I C Temperature Sensor ................................................................................................................... 8 I C 4-Digit 5 7 Matrix LED Display Driver .................................................................................... 12
2 2
2
Code Listing .................................................................................................................................... 17 Hardware Design ............................................................................................................................ 38 References...................................................................................................................................... 39
RES06B0004-0100/Rev.1.00
September 2004
Page 1 of 41
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