User`s Manual of ET-MINI DS3232
Contents
1. 2 AM PM 00 23 1 31 01 12 Century 00 99 1 12 AM PM 00 23 a I NS 03 1 12 AM PM 00 23 N 1 31 Basaw conv AS ast iron aae J ane como fauowe CRATET GRATED Enoaknz ay aaF art Contolsaus para o o 0 LSB of Temp oo oo Cee fe fe me sien para para bara bara DATA DATA DATA AgingOfeet sen oara para DATA DATA DATA DATA DATA wSBotTeme Reserved for test See more details of Register in each bit in each Address from datasheet of DS3232 and user can download them from Internet ETT CO LTD Picture sh ENA DIS ows Circuit ET MINI DS3232 2 WWW ETT CO TH2. User s Manual of MODULE ET MINI DS3232 rc RTC 3V 5V ET MINI DS3232 Module ET MINI DS3232 is Module Real Time Clock RTC that is used as Time Base in the format of clock time calendar and thermometer It is IC Interface that uses 3 3V 5V Power Supply Specifications Run by 3 3V 5V Power Supply has Battery Backup for timekeeping when user has removed Power Supply from Module Be used as time that shows hours 24 Hour or 12 Hout second minute day date month year validate up to 2099 Two programmable time of day alarms and 4 of programmable Square Wave Output through Pin SQW Has Digital Temp Sensor to measure temperature the accuracy rate is 3 C and it always updates the temperature every 64 seconds Has 236Byte Internal RAM by using Battery for Backup Use I2C Interface it can receive the maximum frequency of 100KHz in Normal Mode and 400KHz in fast Mode Has ID Slave Address it is 1101000X when X is state of Read 1 or Write 0 How to use 1 2 Interface Power Supply VCC and GND with Module Interface Signal SCL SDA and GND with MCU If user requires using Alarm Mode it has to interface Pin SQW INT to check Signal INT when it reaches the setting time Other pins that are not used are floating Set jumper SCL SDA to the position of ENA if external circuit of Module is not interfaced with R Pull Up on the other hand if external circuit of Module is interfaced with R Pull Up it has to set J
3. umper SCL SDA to the position of DIS For Jumper INT if it is used in Alarm Mode and user requires using Pin SQW INT it has to set Jumper to the position of ENA to interface R Pull Up with this pin Insert Battery Backup for timekeeping when user has removed Power Supply from Module Write program to control the operation O O BATTER 3V ENA DIS 1E OD AZ An gE ali 7 ID 1101000X O VDD OSCL OSDA OISQW INT O 32KHZ OIRST O GND O GND VDD SCL SDA SQW INT 32KHZ RST OOGND O GNbD o n o 0 o O O Figure shows structure of ET MINI DS3232 and position of Pin Port ETT CO LTD l WWW ETT CO TH User s Manual of MODULE ET MINI DS3232 rc RTC 3V 5V Table shows internal Address positions of DS3232 for Read Write BIT7 ADDRESS MSB won o 06h 07h A1M1 08h A1M2 09h A1M83 OAh A1M4 OBh A2M2 OCh A2M3 OEh EOSC 10h 11h 12h DATA BIT 6 BIT5 BIT 4 10 Seconds AM PM oi Poo o o Es 10 Year 10 Month 10 Seconds 10 Hour AM PM 12 24 10 Hour 12 24 AMPM 10 Ho ur BIT 0 BIT 3 LSB BIT 2 BIT 1 FUNCTION Seconds Seconds Minutes Minutes Hour Hours Day Day Date Date Month Month Century Seconds Alarm 1 Seconds Minutes Alarm 1 Minutes Hour Alarm 1 Hours Day Alarm 1 Day Date Alarm 1 Date Minutes Alarm 2 Minutes Hour Alarm 2 Hours Day Date Alarm 2 Day Alarm 2 Date RANGE 1 1
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