STFPC320 datasheet(39/78 Pages) STMICROELECTRONICS

39 / 78 page

STFPC320

Commands

39/78

Description:

Byte2 to byte6 will follow the same pattern as shown for byte1 above:

BYTE2: segment d, segment c

BYTE3: segment f, segment e

BYTE4: segment m, segment g

BYTE5: segment k, segment h

BYTE6: segment p/col, segment j/col

Segments r and n are never used for RTC display.

Byte7 is for RTC format configuration:

When b6 is set to a ‘0’, it implies that the dot point/column is a part of the same digit as the

LSB of the HH or LSB of the MM. When b6 is set to a ‘1’, it means that a separate digit is

used for the separator between the hour/minute and minute/second.

When b5 is set to a ‘0’, HH:MM display format of RTC is chosen and when it is set to a ‘1’,

the HH:MM:SS format is chosen.

When b4 is set to a ‘0’, the AM/PM is not displayed and when it is set to a ‘1’, the AM/PM is

displayed on the VFD.

Figure 16.

14-segment + dotpoint display

For a display with segment configuration as in Figure 16, the location of “a” segment

represented by bits b3-b0 corresponds to “0000”. Location of b segment corresponds to

“0001”. Location of c segment corresponds to “0010” and so on.

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.

Description:

b0: KS1 KEY1

b1: KS1 KEY2

b2: KS2 KEY1

b3: KS2 KEY2

MSB

LSB

BYTE7

MSB

LSB

BYTE1

STFPC320 数据表(PDF) 39 Page - STMicroelectronics

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