SSR-25VA - ANV

SSR-25VA SSR Series SOLID STATE RELAY

The application performs an electronic watch that has two main functions: • display of the six time/date variables (year, month, date, hour, minutes, seconds) using the interrupts of the microcontroller (this operation is performed on the on-board LCD; the format is 24 hours). • setup of the above variables using the two onboard push buttons: S1 = MENU KEY, .

Features

OF THE RTCC STRUCTURE
• I2C™ Bus Interface
• RTCC with Time/Date Registers: Year, Month, Date, Day of Week, Hours, Minutes, Seconds
• Support for Leap Year
• Low-power CMOS Technology
• Input for External Battery Backup (maintains SRAM, RTCC and Timekeeping)
• On-board 32,768 kHz Crystal Oscillator for the RTCC SCHEMATIC The schematic includes a PIC18 Explorer demo board and the I2C RTCC PICtail™ daughter board as shown in Figure 1. FIGURE 1: SCHEMATIC DB7 - 0 LCD LUMEX RS E SCK MCP23S17 SPI Expander CS SDI VDD RC5/SD01 C4 = 0.1 uF RA2 10K S1 RB0 VDD VDD 2K RA4/T0 CKI C3 32.768 kHz .