LSQ976-NR-1-0-20-R18 datasheet(20/50 Pages) MICROCHIP

20 / 50 page

Wireless Security Remote Control Development Kit User’s Guide

DS41646A-page 20

 2012 Microchip Technology Inc.

2.6.0.3

RTCC TEST

When RTCC tests are initiated, the LCD display will show the clock and calendar. If no

coin battery for RTCC has been installed, the time displayed will be close to the reset

time of January 1, 2012. On the other hand, if a coin battery for RTCC is installed, the

time displayed will be based on whatever is previously set, plus the time that has been

passed. Observe that the clock is advancing. Once the RTCC test is done, SW1 needs

to be pressed to move forward to the SPI test.

2.6.0.4

SPI TEST

The SPI test in hardware self-check is performed to the SPI bus that connects the

target application microcontroller and the SX1239 Receiver PICtail Daughter Board.

Therefore, the SX1239 Receiver PICtail Daughter Board must have been plugged in

before this test starts. Once the SPI test starts, the target application microcontroller

requests specific information from the SX1239 receiver through the SPI bus. If the

expected response is received, then the “Successful” status will be displayed;

otherwise, the “Fail” status will be displayed.

Note:

If a PICtail daughter board other than the SX1239 Receiver PICtail

Daughter Board is plugged into the PICtail connector, even though the SPI

bus may still work, the SPI test might show failure status. The reason is due

to the expected values to be received from the SX1239.

LSQ976-NR-1-0-20-R18 데이터시트(PDF) 20 Page - Microchip Technology