C8051F311 Silicon Laboratories Inc, C8051F311 Datasheet - Page 59

• Manufacturer Part Number: C8051F311
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F31xr

Specifications of C8051F311

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: POR, PWM, Temp Sensor, WDT
• Number Of I /o: 25
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 17x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Bits7–3: AD0SC4–0: ADC0 SAR Conversion Clock Period Bits.
Bit2:
Bits1–0: UNUSED. Read = 00b; Write = don’t care.
Bits7–0: ADC0 Data Word High-Order Bits.
Bits7–0: ADC0 Data Word Low-Order Bits.
AD0SC4
R/W
R/W
R/W
Bit7
Bit7
Bit7
SAR Conversion clock is derived from system clock by the following equation, where
AD0SC refers to the 5-bit value held in bits AD0SC4–0. SAR Conversion clock require-
ments are given in Table 5.1.
AD0LJST: ADC0 Left Justify Select.
0: Data in ADC0H:ADC0L registers are right-justified.
1: Data in ADC0H:ADC0L registers are left-justified.
For AD0LJST = 0: Bits 7–2 are the sign extension of Bit1. Bits 1–0 are the upper 2 bits of the
10-bit ADC0 Data Word.
For AD0LJST = 1: Bits 7–0 are the most-significant bits of the 10-bit ADC0 Data Word.
For AD0LJST = 0: Bits 7–0 are the lower 8 bits of the 10-bit Data Word.
For AD0LJST = 1: Bits 7–6 are the lower 2 bits of the 10-bit Data Word. Bits 5–0 will always
read ‘0’.
AD0SC
AD0SC3
R/W
R/W
R/W
Bit6
Bit6
Bit6
SFR Definition 5.4. ADC0H: ADC0 Data Word MSB
SFR Definition 5.3. ADC0CF: ADC0 Configuration
SFR Definition 5.5. ADC0L: ADC0 Data Word LSB
=
SYSCLK
--------------------- - 1
CLK
AD0SC2
R/W
R/W
R/W
Bit5
Bit5
Bit5
SAR
–
AD0SC1
R/W
R/W
R/W
Bit4
Bit4
Bit4
AD0SC0 AD0LJST
Rev. 1.7
R/W
R/W
R/W
Bit3
Bit3
Bit3
C8051F310/1/2/3/4/5/6/7
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
Reset Value
Reset Value
Reset Value
11111000
0xBC
0xBD
0xBE
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