ANV SSR-25LA-H
The Real-Time Clock/Calendar (RTCC) devices can be successfully used in applications that require very accurate timekeeping.| Part No. | SSR-25LA-H |
|---|---|
| Datasheet | SSR-25LA-H Download |
| Manufacturer | ANV |
| Description | SSR Series SOLID STATE RELAY |
| Buy | Stock & Price |
FEATURES
OF THE RTCC● 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 1 X1 10pF Y VDD 8 2K PIC18F87J11 VDD 10K 2 C4 R4 X2 RTCC MCP 79410 MENU KEY MFP 7 S2 SCL 6 RC3/SCK1/SCL1 RA5 3 BAT 85 1K 100pF BAT VBAT 4 VSS SDA 5 2K VDD RC4/SDA1 INCR KEY 2011 Microchip Technology Inc. DS01379A-page 1 Free Datasheet AN1379 The hardware modules used on the demo board are:
● LCD
● 2 push buttons
● AC164140 RTCC PICtail daughter board To access the LCD through a minimum of pins, the SPI on the MSSP1 module is used, in conjunction with a 16-bit I/O expander with SPI interface (MCP23S17).
