71M6531D Datasheet, PDF (43/115 Pages) Teridian Semiconductor Corporation – Energy Meter IC

FDS 6531/6532 005
Data Sheet 71M6531D/F-71M6532D/F
DIO
– ₁₇ – – – – – – – – – – _{28 29} – –
LCD Segment ^– 37 ^{– – – – – – – – – –} 48 49 ^{– –}
Pin number
– ₁₃ – – – – – – – – – – _{47 24} – –
Configuration (DIO ^{– 5 – – – – – – – – – – 0 1 – –}
or LCD segment)
LCD_MAP[39:32]
LCD_MAP[55:48]
Data Register
– 1– ^{– – – – – – – – –} 4 5– ^–
DIO2 = P2 (SFR 0xA0)
DIO3 = P3 (SFR 0xB0)
– 1– ^{– – – – –}
Direction Register
0 = input, 1 = output
DIO_DIR2 (SFR 0xA1)
DIO
LCD Segment
Pin number
Configuration (DIO
or LCD segment)
– – – _{43 44 45 46} –
– – – _{63 64 65 66} –
– – – _{29 23 28 5} –
––– _7012–
LCD_BITMAP[63:56] LCD_BITMAP[64:71]
Data Register
–––
–
Direction Register _{– – –}
–
0 = input, 1 = output
1.5.8 Digital I/O – 71M6532D/F
The 71M6532D/F includes up to 43 pins of general-purpose digital I/O. These pins are compatible with 5-
V inputs (no current limiting resistors are needed). The Digital I/O pins can be categorized as follows:
• Dedicated DIO pins (4 pins):
o DIO3
o DIO56 – DIO58 (3 pins)
• DIO/LCD segment pins (a total of 37 pins):
o DIO4/SEG24 – DIO27/SEG47 (24 pins)
o DIO29/SEG49, DIO30/SEG50 (2 pins)
o DIO40/SEG60 – DIO45/SEG65 (6 pins)
o DIO47/SEG67 – DIO51/SEG71 (5 pins)
• DIO pins combined with other functions (2 pins): DIO2/OPT_TX, DIO1/OPT_RX
On reset or power-up, all DIO pins are inputs until they are configured for the desired direction under
MPU control. The pin function can be configured by the I/O RAM registers LCD_BITMAPn. Setting
v1.2
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