AN1447 datasheet(18/26 Pages) STMICROELECTRONICS

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4-MULTIPLEXED LCD WITH A STANDARD ST62

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LCD_vars

SEGMENT DATA

RSEG LCD_vars

;--- Public variables ---

PUBLIC min_dig0, min_dig1, hr_dig0, hr_dig1

PUBLIC icons, flashing

; Character codes

min_dig0:

; Digit 0 for minutes

min_dig1:

; Digit 1 for minutes

hr_dig0:

; Digit 0 for hours

hr_dig1:

; Digit 1 for hours

; Code

: 0 1 2 3 4 5 6 7 8 9 a b c d e f

; Display

: 0 1 2 3 4 5 6 7 8 9 H - L P E

icons:

; Byte of flags for icons on/off state

; (0 = off, 1 = on)

flashing:

; Byte of flags for digits and icons

; flashing state

; (0 = not flashing, 1 = flashing)

;--- Local variables ---

LCD_Ph:

; LCD phase (0 to 7)

DDR_com2:

OR_com2:

strobe:

; Flash strobe (000h <--> 0ffh)

mindig0I:

; Digit 0 for minutes - IMAGE

mindig1I:

; Digit 1 for minutes - IMAGE

hrdig0I:

; Digit 0 for hours - IMAGE

hrdig1I:

; Digit 1 for hours - IMAGE

iconsI:

; Icons - IMAGE

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