C8051F366-GQ Silicon Laboratories Inc, C8051F366-GQ Datasheet - Page 220

• Manufacturer Part Number: C8051F366-GQ
• Description: IC 8051 MCU 32K FLASH 32-LQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F36xr

Specifications of C8051F366-GQ

• Program Memory Type: FLASH
• Program Memory Size: 32KB (32K x 8)
• Package / Case: 32-LQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 29
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 21x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: I2C/SMBus/SPI/UART
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 29
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F360DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 21-ch x 10-bit
• On-chip Dac: 1-ch x 10-bit
• Package: 32LQFP
• Device Core: 8051
• Family Name: C8051F36x
• Maximum Speed: 50 MHz
• Operating Supply Voltage: 3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1410 - KIT DEV FOR C8051F360 FAMILY
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1648

C8051F360/1/2/3/4/5/6/7/8/9
19. UART0
UART0 is an asynchronous, full duplex serial port offering modes 1 and 3 of the standard 8051 UART.
Enhanced baud rate support allows a wide range of clock sources to generate standard baud rates (details
in Section “19.1. Enhanced Baud Rate Generation” on page 221). Received data buffering allows UART0
to start reception of a second incoming data byte before software has finished reading the previous data
byte.
UART0 has two associated SFRs: Serial Control Register 0 (SCON0) and Serial Data Buffer 0 (SBUF0).
The single SBUF0 location provides access to both transmit and receive registers. Writes to SBUF0
always access the Transmit register. Reads of SBUF0 always access the buffered Receive register;
it is not possible to read data from the Transmit register.
With UART0 interrupts enabled, an interrupt is generated each time a transmit is completed (TI0 is set in
SCON0), or a data byte has been received (RI0 is set in SCON0). The UART0 interrupt flags are not
cleared by hardware when the CPU vectors to the interrupt service routine. They must be cleared manually
by software, allowing software to determine the cause of the UART0 interrupt (transmit complete or receive
complete).
220
Rate Generator
UART Baud
Write to
SBUF
Figure 19.1. UART0 Block Diagram
Tx Clock
Rx Clock
Stop Bit
Start
Start
SBUF
Read
SCON
D
TB8
SET
CLR
Shift
Input Shift Register
Q
Shift
SFR Bus
(RX Latch)
Tx Control
Rx Control
(9 bits)
SBUF
0x1FF
SFR Bus
Zero Detector
(TX Shift)
SBUF
RB8
Rev. 1.0
Load SBUF
Rx IRQ
Tx IRQ
TI
RI
SBUF
Load
Data
Send
Interrupt
Serial
Port
TX
RX
Crossbar
Crossbar
Port I/O