C8051F581-IMR Silicon Labs, C8051F581-IMR Datasheet - Page 268

• Manufacturer Part Number: C8051F581-IMR
• Description: 8-bit Microcontrollers - MCU 50MIPS 128kB 8kB SPI
• Manufacturer: Silicon Labs

Specifications of C8051F581-IMR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

C8051F58x/F59x
SFR Definition 25.2. SBUF1: Serial (UART1) Port Data Buffer
SFR Address = 0x99; SFR Page = 0x10
268
Name
Reset
7:0 SBUF1[7:0] Serial Data Buffer Bits 7–0 (MSB–LSB)
Bit
Type
Bit
Name
7
0
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 transmission. Writing a byte to SBUF1 initiates the transmission. A read of
SBUF1 returns the contents of the receive latch.
6
0
5
0
Rev. 1.2
4
0
SBUF1[7:0]
R/W
Function
3
0
2
0
1
0
0
0