GMS81C7216 Datasheet, PDF (39/121 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

GMS81C7208/7216
R5 Data Register
R5
- --
ADDRESS: 0C5_H
RESET VALUE: 00_H
- R53 R52 R51 R50
Input / Output Data
R5 Direction Register
R5DD - - - -
ADDRESS: 0CD_H
RESET VALUE: 00_H
Port Direction
0: Input
1: Output
R6 and R6DD Register: R6 is an 5-bit CMOS bidirectional I/O
port (address 0C6_H). Each I/O pin can independently used as an
input or an output through the R6DD register (address 0CE_H).
After Reset, R6 port is used as LCD segment output
SEG16~SEG20. To use general I/O ports user should be written
appropriate value into the LPMR (0F3_H).
LCD Pin Function
SEG16 (LCD Segment 16 Signal Output)
SEG17 (LCD Segment 17 Signal Output)
SEG18 (LCD Segment 18 Signal Output)
SEG19 (LCD Segment 19 Signal Output)
SEG20 (LCD Segment 20 Signal Output)
Port Pin
R60
R61
R62
R63
R64
R6 Data Register
R6
---
ADDRESS: 0C6_H
RESET VALUE: 00_H
R64 R63 R62 R61 R60
Input / Output Data
R6 Direction Register
R6DD - - -
ADDRESS: 0CE_H
RESET VALUE: 00_H
Port Direction
0: Input
1: Output
FEB. 2005 Ver 1.04
35