Specifications

C8051F330/1
Rev. 1.1 151
Figure 16.8. SBUF0: Serial (UART0) Port Data Buffer Register
Bits7-0: SBUF0[7:0]: Serial Data Buffer Bits 7-0 (MSB-LSB)
This SFR accesses two registers; a transmit shift register and a receive latch register. When data is
written to SBUF0, it goes to the transmit shift register and is held for serial transmission. Writing a
byte to SBUF0 initiates the transmission. A read of SBUF0 returns the contents of the receive latch.
R/W R/W R/W R/W R/W R/W R/W R/W Reset Value
00000000
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
SFR Address:
0x99