C8051F302 Silicon Laboratories Inc, C8051F302 Datasheet - Page 46

• Manufacturer Part Number: C8051F302
• Description: IC 8051 MCU 8K FLASH 11MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F30xr

Specifications of C8051F302

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 8
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 11-VQFN
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, SMBus, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 8
• Number Of Timers: 16 bit
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: No

C8051F300/1/2/3/4/5
46
VDD = 3.0 V; -40°C to +85°C unless otherwise specified
Input Voltage Range
Input Current
Bits7-3:
Bit3:
Bit2:
Bit1:
Bit0:
R/W
Bit7
PARAMETER
-
Table 6.1. External Voltage Reference Circuit Electrical Characteristics
UNUSED. Read = 00000b; Write = don’t care.
REFSL: Voltage Reference Select.
This bit selects the source for the internal voltage reference.
0: VREF input pin used as voltage reference.
1: VDD used as voltage reference.
TEMPE: Temperature Sensor Enable Bit.
0: Internal Temperature Sensor off.
1: Internal Temperature Sensor on.
BIASE: Internal Analog Bias Generator Enable Bit. (Must be ‘1’ if using ADC).
0: Internal Bias Generator off.
1: Internal Bias Generator on.
UNUSED. Read = 0b. Write = don’t care.
R/W
Bit6
-
Figure 6.2. REF0CN: Reference Control Register
R/W
Bit5
Sample Rate = 500 ksps; VREF = 3.0 V
-
R/W
Bit4
CONDITIONS
-
Rev. 2.3
REFSL
R/W
Bit3
TEMPE
R/W
Bit2
MIN
0
BIASE
R/W
Bit1
TYP
12
R/W
Bit0
-
MAX
VDD
SFR Address:
00000000
Reset Value
0xD1
UNITS
µA
V