AS8218 datasheet(50/123 Pages) AMSCO

50 / 123 page

Data Sheet AS8218 / AS8228

Revision 3.0, 31-May-06

Page 50 of 123

LCDD Control (LCDD_CTRL) including Input and Config Registers

In the control block of the LCD driver there are two registers. Each of these registers may contain data to be

displayed. With a special bit (921Eh, bit 0), it is possible to select one of the two register banks for display.

Each register defines the settings for the different segment and plane select lines. The following table specifies

the allocation of the register bits:

LSD0

LSD1

LSD2

LSD3

LSD4

LSD5

LSD6

LSD7

LSD8

LSD9

LBP0

reg[0]

reg[4]

reg[8]

reg[12]

reg[16]

reg[20]

reg[24]

reg[28]

reg[32]

reg[36]

LBP1

reg[1]

reg[5]

reg[9]

reg[13]

reg[17]

reg[21]

reg[25]

reg[29]

reg[33]

reg[37]

LBP2

reg[2]

reg[6]

reg[10]

reg[14]

reg[18]

reg[22]

reg[26]

reg[30]

reg[34]

reg[38]

LBP3

reg[3]

reg[7]

reg[11]

reg[15]

reg[19]

reg[23]

reg[27]

reg[31]

reg[35]

reg[39]

LSD10

LSD11

LSD12

LSD13

LSD14

LSD15

LSD16

LSD17

LSD18

LSD19

LBP0

reg[40]

reg[44]

reg[48]

reg[52]

reg[56]

reg[60]

reg[64]

reg[68]

reg[72]

reg[76]

LBP1

reg[41]

reg[45]

reg[49]

reg[53]

reg[57]

reg[61]

reg[65]

reg[69]

reg[73]

reg[77]

LBP2

reg[42]

reg[46]

reg[50]

reg[54]

reg[58]

reg[62]

reg[66]

reg[70]

reg[74]

reg[78]

LBP3

reg[43]

reg[47]

reg[51]

reg[55]

reg[59]

reg[63]

reg[67]

reg[71]

reg[75]

reg[79]

LSD20

LSD21

LSD22

LSD23

LBP0

reg[80]

reg[84]

reg[88]

reg[92]

LBP1

reg[81]

reg[85]

reg[89]

reg[93]

LBP2

reg[82]

reg[86]

reg[90]

reg[94]

LBP3

reg[83]

reg[87]

reg[91]

reg[95]

AS8228 only

Notes:

Each of the register bits represents one of the segments of the digits or a decimal point or one of the

annunciators.

reg[x]=0: Segment is turned off; reg[x]=1: Segment is turned on.

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