C8051F353 Silicon Laboratories Inc, C8051F353 Datasheet - Page 49
C8051F353
Manufacturer Part Number
C8051F353
Description
IC 8051 MCU 8K FLASH 28MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F35xr
Specifications of C8051F353
Core Processor
8051
Core Size
8-Bit
Speed
50MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, Temp Sensor, WDT
Number Of I /o
17
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x16b; D/A 2x8b
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
-
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Manufacturer
Quantity
Price
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Part Number:
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Manufacturer:
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Quantity:
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Bits 7-0: ADC0CLK: ADC0 Modulator Clock Divisor.
Note: The Modulator Sampling Rate is not the ADC Output Word Rate. See Section 5.1.4 for
Bits 7-3: Unused: Read = 00000b, Write = don’t care.
Bits 2-0: DECI[10:8]: ADC0 Decimation Ratio Register, Bits 10-8.
This SFR can only be modified when ADC0 is in IDLE mode.
R/W
R/W
Bit7
Bit7
-
Figure 5.9. ADC0DECH: ADC0 Decimation Ratio Register High Byte
This register establishes the Modulator Clock (MDCLK), by dividing down the system clock
(SYSCLK). The input signal is sampled by the modulator at a frequency of MDCLK / 128.
For optimal performance, the divider should be chosen such that the modulator clock is
equal to 2.4576 MHz (modulator sampling rate = 19.2 kHz).
The system clock is divided according to the equation:
MDCLK = SYSCLK / (ADC0CLK + 1)
details.
This register contains the high bits of the 11-bit ADC Decimation Ratio. The decimation ratio
determines the output word rate of ADC0, based on the Modulator Clock (MDCLK). See the
ADC0DECL register description for more information.
R/W
R/W
Bit6
Bit6
-
Figure 5.8. ADC0CLK: ADC0 Modulator Clock Divisor
R/W
R/W
Bit5
Bit5
-
R/W
R/W
Bit4
Bit4
-
ADC0CLK
Rev. 0.4
R/W
R/W
Bit3
Bit3
-
DECI10
R/W
R/W
Bit2
Bit2
C8051F350/1/2/3
DECI9
R/W
R/W
Bit1
Bit1
SFR Address:
SFR Address:
DECI8
R/W
R/W
Bit0
Bit0
0xF7
0x9B
00000000
Reset Value
Reset Value
00000111
49
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