C8051F045 View Datasheet(PDF) - Silicon Laboratories

Part Name

Description

Manufacturer

C8051F045

Mixed Signal ISP Flash MCU Family

Silicon Laboratories 

C8051F040/1/2/3/4/5/6/7

SFR Definition 22.2. SBUF1: Serial (UART1) Port Data Buffer

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

SFR Page: 1

Bits7-0:

SBUF1[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 SBUF1, it goes to the transmit shift register and is held for serial transmis-

sion. Writing a byte to SBUF1 is what initiates the transmission. A read of SBUF1 returns the

contents of the receive latch.

Rev. 1.5

283

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