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ML610471/472/473/Q471/Q472/Q473 User's Manual
Chapter 11 UART
11-6
11.2.5 UART0 Mode Register 1 (UA0MOD1)
Address: 0F293H
Access: R/W
Access size: 8/16 bit
Initial value: 00H
7 6 5 4 3 2 1 0
UA0MOD1
−
U0DIR U0NEG U0STP U0PT1 U0PT0 U0LG1 U0LG0
R/W R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
UA0MOD1 is a special function register (SFR) to set the transfer mode of the UART.
[Description of Bits]
•
U0LG1, U0LG0 (bits 1, 0)
The U0LG1 and U0LG0 bits are used to specify the data length in the communication of the UART.
U0LG1 U0LG0 Description
0 0 8-bit length (initial value)
0 1 7-bit length
1 0 6-bit length
1 1 5-bit length
•
U0PT1, U0PT0 (bits 3, 2)
The U0PT1 and U0PT0 bits are used to select “even parity”, odd parity”, or “no parity” in the communication of
the UART.
U0PT1 U0PT0 Description
0 0 Even parity (initial value)
0 1 Odd parity
1 * No parity bit
•
U0STP (bit 4)
The U0STP bit is used to select the stop bit length in the communication of the UART.
U0STP Description
0 1 stop bit (initial value)
1 2 stop bits