STFPC320 데이터 시트보기 (PDF) - STMicroelectronics

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STFPC320

Front panel controller/driver with standby power management and real-time clock

STMicroelectronics 

STFPC320

Commands

7.4

Example for device configuration

After the proper power-up sequence, an example for configuration of the STFPC320 is given

below:

1. Configuring display & RC

0x09 = RTC display & enables the guard timer to issue STBY

0xAA = raw format, RC-5 protocol, 10s for initial guard time value

0x0A = digit 1 will show the Hour MSB, 11 digits/17 segments display

2. Configure RTC segments

0xA4 = display control command with RTC segments configuration

0x10, 0x32, 0x54, 0x76, 0xAB, 0xEE = 6 bytes used to map the segment locations for

RTC

0x20 = format of RTC (separator a part of same digit, HH: MM: SS format with no

AM/PM)

3. Configure front panel keys as wake-up keys (hotkeys)

0xA2 = hotkey setting command for front panel keys. Subsequent 3 bytes are used to

configure the desired front panel keys to be wake-up keys as described in Section

Section : Thus, if the a segment is located on segment 1, the bits b3-b0 are “0000”. If b

segment is located on segment 2, the bits b3-b0 are “0001” and so on. on page 39.

4. Configure RC keys as wake-up keys (hotkeys)

0xA1 = hotkey setting command for RC keys. For one hot key configuration from one

RC device address, 2 bytes are sent (1st byte is RC address and 2 byte is hotkey

command as described in Section 7.3 on page 38.

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