71M6533 Datasheet, PDF (44/132 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6533/G/H and 71M6534/H Data Sheet
FDS_6533_6534_004
Table 41: Data/Direction Registers and Internal Resources for DIO 36-47
DIO
LCD Segment
71M6533 Pin #
71M6534 Pin #
Configuration (DIO
or LCD segment)
– – – – 36* 37* 38* 39* – 41 42* 43 44 45 46* 47
– – – – 56* 57* 58* 59* – 61 62* 63 64 65 66* 67
– – – – – – – – – 99 – 40 31 38 – 22
– – – – 87 88 89 90 – 117 118 46 37 44 5 27
– – – – 0* 1* 2* 3* – 5 6* 7 0 1 2* 3
LCD_BITMAP[55:48]
LCD_BITMAP[63:56]
LCD_BITMAP[71:64]
Data Register
– –––
–
Direction Register
0 = input, 1 = output
–
– ––
Table 42: Data/Direction and Internal Resources for DIO 48-58
DIO
LCD Segment
71M6533 Pin #
71M6534 Pin #
Configuration (DIO
or LCD segment)
48 49 50 51 52* 53* 54* 55*
68 69 70 71 72* 73* 74* 75*
23 24 25 50 – – – –
28 29 30 56 57 58 59 60
4 5 6 7 0* 1* 2* 3*
LCD_BITMAP[71:64] LCD_BITMAP[80:72]
56 57 58
–––
14 15 16
19 20 21
Always DIO
Data Register
Direction Register
0 = input, 1 = output
See the tables in the I/O RAM Description (Section 5.2) for exact bit locations. For example,
DIO43 is controlled by LCD_SEG63[0] which resolves to I/O RAM location 0x2045[4].
DIO24 and higher do not have SFR registers for direction control. DIO36 and higher do not have SFR
registers for data access. The direction control of these pins is achieved with the LCD_SEGn[3] registers
and data access is controlled with the LCD_SEGn[0] registers in I/O RAM. DIO56 through DIO58 are
dedicated DIO pins. They are controlled with DIO_DIR56[7] through DIO_DIR58[7] (direction) and with
DIO_56[4] through DIO_58[4] (data) in I/O RAM.
44
Rev 2