C8051F012-GQ Silicon Laboratories Inc, C8051F012-GQ Datasheet - Page 136

• Manufacturer Part Number: C8051F012-GQ
• Description: IC 8051 MCU 32K FLASH 32LQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F01xr

Specifications of C8051F012-GQ

• Program Memory Type: FLASH
• Program Memory Size: 32KB (32K x 8)
• Package / Case: 32-LQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 4x10b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F0x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, SMBus, SPI, UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 8
• Number Of Timers: 4 bit
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F005DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 4 Channel
• On-chip Dac: 12 bit, 2 Channel
• Data Rom Size: 32 KB
• A/d Bit Size: 10 bit
• A/d Channels Available: 4
• Height: 1.4 mm
• Length: 7 mm
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Width: 7 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1193

Bits7-0: SBUF.[7:0]: Serial Data Buffer Bits 7-0 (MSB-LSB)
R/W
Bit7
Oscillator Frequency (MHz)
* Assumes SMOD=1 and T1M=1.
** Numbers in parenthesis show the actual baud rate.
This is actually two registers; a transmit and a receive buffer register. When data is moved to
SBUF, it goes to the transmit buffer and is held for serial transmission. Moving a byte to
SBUF is what initiates the transmission. When data is moved from SBUF, it comes from the
receive buffer.
22.1184
16.5888
14.7456
12.9024
11.0592
22.1184
16.5888
14.7456
12.9024
11.0592
R/W
Bit6
Table 18.2. Oscillator Frequencies for Standard Baud Rates
23.592
18.432
7.3728
5.5296
3.6864
1.8432
24.576
24.576
23.592
18.432
7.3728
5.5296
3.6864
1.8432
9.216
9.216
24.0
25.0
25.0
24.0
Figure 18.8. SBUF: Serial (UART) Data Buffer Register
R/W
Bit5
Divide Factor
R/W
Bit4
208
205
192
160
144
128
112
320
434
868
848
833
819
768
640
576
512
448
384
320
256
192
128
96
80
64
48
32
16
64
Rev. 1.7
R/W
Bit3
Timer 1 Load Value*
0xCA
0xCD
0xDC
0xFA
0xFD
0xEC
0xCB
0xCC
0xEC
0xFB
0xFC
0xFE
0xFF
0xE5
0xD0
0xD8
0xE0
0xE4
0xE8
0xFC
0xF3
0xF3
0xF4
0xF6
0xF7
0xF8
0xF9
0xF0
0xF4
0xF8
R/W
Bit2
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
R/W
Bit1
Resulting Baud Rate**
115200 (115384)
115200 (113423)
57600 (57870)
28800 (28921)
28800 (28846)
28800 (28911)
115200
115200
115200
115200
115200
115200
115200
115200
115200
115200
115200
76800
28800
28800
28800
28800
28800
28800
28800
28800
28800
28800
28800
28800
R/W
Bit0
SFR Address:
Reset Value
00000000
0x99
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