STFPC320 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STFPC320

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

STMicroelectronics 

STFPC320

Commands

The second byte after the configuration command is in the format displayed in Figure 15

Figure 15. Second byte format after configuration type

MSB

b7 b6 b5 b4 b3 b2 b1

LSB

b0

RTC DISPLAY MODE

SETTING

0000: RTC digit 1 (default)

0001: RTC digit 2

0010: RTC digit 3

0011: RTC digit 4

0100: RTC digit 5

0101: RTC digit 6

0110: RTC digit 7

Note that the RTC digit 1 is the

default setting.

VFD DISPLAY MODE SETTING

0111 : 8 digits, 20 segments

1000 : 9 digits, 19 segments

1001 : 10 digits, 18 segments

1010 : 11 digits, 17 segments

1011 : 12 digits, 16 segments

1100 : 13 digits, 15 segments

1101 : 14 digits, 14 segments

1110 : 15 digits, 13 segments

1111 : 16 digits, 12 segments

H

Dig 1

H

Dig 2

M

Dig 3

M

Dig 4

S

Dig 5

S

Dig 6

Dig 7

Dig 8

Dig 9

Dig 10

Note:

The above example shows the HH, MM, SS digits on a 10-digit display panel when RTC

digit 1 is configured (Bits b7 - b4= “0000”) & HH:MM:SS format is selected with separator

being a part of the same digit. The MSB of Hour corresponds to Digit 1 when

b7 - b4= “0000”.

When b7-b4=“0001” is configured, the MSB of Hour starts from the Digit 2.

The Digit 1 must start from the left.

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