C8051F122 Silicon Laboratories Inc, C8051F122 Datasheet - Page 80

• Manufacturer Part Number: C8051F122
• Description: IC 8051 MCU FLASH 128K 100TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F12xr

Specifications of C8051F122

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 100MHz
• Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 64
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8.25K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x8b, 8x10b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

C8051F120/1/2/3/4/5/6/7
C8051F130/1/2/3
80
Bits7–3: AD0SC4–0: ADC0 SAR Conversion Clock Period Bits.
Bits2–0: AMP0GN2–0: ADC0 Internal Amplifier Gain (PGA).
SFR Page:
SFR Address:
AD0SC4
R/W
Bit7
SAR Conversion clock is derived from system clock by the following equation, where
AD0SC refers to the 5-bit value held in AD0SC4-0, and CLK
SAR clock (Note: the ADC0 SAR Conversion Clock should be less than or equal to
2.5 MHz).
When the AD0SC bits are equal to 00000b, the SAR Conversion clock is equal to SYSCLK
to facilitate faster ADC conversions at slower SYSCLK speeds.
000: Gain = 1
001: Gain = 2
010: Gain = 4
011: Gain = 8
10x: Gain = 16
11x: Gain = 0.5
AD0SC
0
0xBC
AD0SC3
R/W
Bit6
SFR Definition 6.3. ADC0CF: ADC0 Configuration
=
------------------------------- - 1
2 C
AD0SC2
 LK
SYSCLK
R/W
Bit5
SAR0
AD0SC1
R/W
Bit4
–
Rev. 1.4
AD0SC0 AMP0GN2 AMP0GN1 AMP0GN0 11111000
R/W
Bit3

R/W
AD0SC 00000b
Bit2
SAR0

R/W
Bit1
refers to the desired ADC0

R/W
Bit0
Reset Value