71M6521DE Datasheet, PDF (67/107 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6521DE/DH/FE Data Sheet
LCD_NUM
SEG in Addition to
SEG0-SEG18
Total Number of
LCD Segment Pins
Including SEG0-
SEG18
DIO Pins in Addition
to DIO1-DIO2
Total Number of DIO
Pins Including DIO1,
DIO2
0
None
19
4-11,14-17, 19-21
18
1
41
20
4-11, 14-17, 19-20
17
2
40-41
21
4-11, 14-17, 19
16
3
39-41
22
4-11, 14-17
15
4
39-41
22
4-11, 14-17
15
5
37, 39-41
23
4-11, 14-16
14
6
36-37, 39-41
24
4-11, 14-15
13
7
35-37, 39-41
25
4-11, 14
12
8
34-37, 39-41
26
4-11
11
9
34-37, 39-41
26
4-11
11
10
34-37, 39-41
27
4-11
11
11
31, 34-37, 39-41
27
4-10
10
12
30-31, 34-37, 39-41
28
4-9
9
13
29-31, 34-37, 39-41
29
4-8
8
14
28-31, 34-37, 39-41
30
4-7
7
15
27-31, 34-37, 39-41
31
4-6
6
16
26-31, 34-37, 39-41
32
4-5
5
17
25-31, 34-37, 39-41
33
4
4
18
24-31, 34-37, 39-41
34
None
3
Note: LCD segment numbers are given without CKTEST/SEG19, E_RXTX/SEG38, E_TCLK/SEG33, and
E_RST/SEG32.
Table 64: LCD and DIO Pin Assignment by LCD_NUM for the QFN-68 Package
Rev 2
Page: 67 of 107