Rainbow-electronics DS1337 Manual de usuario

1 of 15 REV: 091404 Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revision

DS1337 I2C Serial Real-Time Clock 10 of 15 Table 3. Alarm Mask Bits ALARM 1 REGISTER MASK BITS (BIT 7) DY/DT A1M4 A1M3 A1M2 A1M1 ALARM RATE X 1 1

DS1337 I2C Serial Real-Time Clock 11 of 15 (provided that the alarms are enabled). In this configuration, a square wave is output on the SQW/INTB pi

DS1337 I2C Serial Real-Time Clock 12 of 15 I2C SERIAL DATA BUS The DS1337 supports the I2C bus protocol. A device that sends data onto the bus is de

DS1337 I2C Serial Real-Time Clock 13 of 15 Figure 3. Data Transfer on I2C Serial Bus Depending upon the state of the R/W bit, two types of data t

DS1337 I2C Serial Real-Time Clock 14 of 15 Figure 4. Data Write—Slave Receiver Mode Figure 5. Data Read—Slave Transmitter Mode

DS1337 I2C Serial Real-Time Clock 15 of 15 Maxim/Dallas Semiconductor cannot assume responsibility for use of any circuitry other than circuitry ent

DS1337 I2C Serial Real-Time Clock 2 of 15 ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground…………………………………………………………...…-0.3V to +6.

DS1337 I2C Serial Real-Time Clock 3 of 15 AC ELECTRICAL CHARACTERISTICS (VCC = 1.8V to 5.5V, TA = -40°C to +85°C.) (Note 1) PARAMETER SYMBOL CONDITI

OSCILLATOR FREQUENCY vs. VCCDS1337 toc05VCC (V)FREQUENCY (Hz)4.33.83.32.82.31.832767.5032767.5532767.6032767.6532767.7032767.7532767.451.3 4.8VCC = 0V

DS1337 I2C Serial Real-Time Clock 5 of 15 PIN DESCRIPTION PIN 8 16 NAME FUNCTION 1 — X1 2 — X2 Connections for a Standard 32.768kHz Quartz Crystal

DS1337 I2C Serial Real-Time Clock 6 of 15 BLOCK DIAGRAM OPERATION The Block Diagram shows the main elements of the DS1337. As s

DS1337 I2C Serial Real-Time Clock 7 of 15 Figure 1. Oscillator Circuit Showing Internal Bias Network CLOCK ACCURACY The accuracy of the

DS1337 I2C Serial Real-Time Clock 8 of 15 ADDRESS MAP Table 2 shows the address map for the DS1337 registers. During a multibyte access, when the ad

DS1337 I2C Serial Real-Time Clock 9 of 15 CLOCK AND CALENDAR The time and calendar information is obtained by reading the appropriate register bytes