C8051F023R Silicon Laboratories Inc, C8051F023R Datasheet - Page 214
C8051F023R
Manufacturer Part Number
C8051F023R
Description
IC 8051 MCU 64K FLASH 64TQFP
Manufacturer
Silicon Laboratories Inc
Series
C8051F02xr
Specifications of C8051F023R
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
32
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x8b, 8x10b; D/A 2x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
336-1035-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F023R
Manufacturer:
Silicon Laboratories Inc
Quantity:
10 000
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C8051F020/1/2/3
214
Bits7-0:
Bits7-0:
Bits7-0:
R/W
R/W
R/W
Bit7
Bit7
Bit7
SBUF0.[7:0]: UART0 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 is what initiates the transmission. A read of SBUF0 returns the contents of the receive
latch.
SADDR0.[7:0]: UART0 Slave Address
The contents of this register are used to define the UART0 slave address. Register SADEN0 is a bit
mask to determine which bits of SADDR0 are checked against a received address: corresponding bits
set to logic 1 in SADEN0 are checked; corresponding bits set to logic 0 are “don’t cares”.
SADEN0.[7:0]: UART0 Slave Address Enable
Bits in this register enable corresponding bits in register SADDR0 to determine the UART0 slave
address.
0: Corresponding bit in SADDR0 is a “don’t care”.
1: Corresponding bit in SADDR0 is checked against a received address.
Figure 20.11. SADEN0: UART0 Slave Address Enable Register
R/W
R/W
R/W
Bit6
Bit6
Bit6
Figure 20.10. SADDR0: UART0 Slave Address Register
Figure 20.9. SBUF0: UART0 Data Buffer Register
R/W
R/W
R/W
Bit5
Bit5
Bit5
R/W
R/W
R/W
Bit4
Bit4
Bit4
Rev. 1.4
R/W
R/W
R/W
Bit3
Bit3
Bit3
R/W
R/W
R/W
Bit2
Bit2
Bit2
R/W
R/W
R/W
Bit1
Bit1
Bit1
R/W
R/W
R/W
Bit0
Bit0
Bit0
SFR Address:
SFR Address:
SFR Address:
00000000
00000000
00000000
Reset Value
Reset Value
Reset Value
0xA9
0xB9
0x99
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