EM78P510N
8-Bit Microcontrollers
6.2.38 Bank 3 R5 URC (UART Control Register)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
URTD8 UMODE1 UMODE0 BRATE2 BRATE1 BRATE0
UTBE
TXE
Bit 7 (URTD8): Transmission Data Bit 8
Bits 6~5 (UMODE1~UMODE0): UART Transmission Mode Select Bit
UMODE1 UMODE0
UART Mode
Mode 1 : 7-Bit
Mode 2 : 8-Bit
Mode 3 : 9-Bit
Reserved
0
0
1
1
0
1
0
1
Bits 4~2 (BRATE2~BRATE0): Transmit Baud Rate Select (Tuart=Fc/16)
BRATE2 BRATE1 BRATE0
Baud Rate
Tuart/13
e.g. Fc = 8MHz
38400
19200
9600
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Tuart/26
Tuart/52
Tuart/104
Tuart/208
Tuart/416
4800
2400
1200
Timer 1
Reserved
Bit 1 (UTBE): UART transfer buffer empty flag. Set to 1 when transfer buffer is empty.
Reset to 0 automatically when write in to URTD register. UTBE bit will
be cleared by hardware when enabling transmission. The UTBE bit is
read-only. Therefore, writing to the URTD register is necessary to start
transmit shifting.
Bit 0 (TXE):
Enable transmission
0 : Disable
1 : Enable
Product Specification (V0.9) 09.12.2006
(This specification is subject to change without further notice)
• 29
ELAN [ ELAN MICROELECTRONICS CORP ]
