C8051F411-GMR Silicon Laboratories Inc, C8051F411-GMR Datasheet - Page 54
C8051F411-GMR
Manufacturer Part Number
C8051F411-GMR
Description
Microcontrollers (MCU) 50 MIPS 32KB 12ADC RTCLOCK 28 PIN MCU
Manufacturer
Silicon Laboratories Inc
Datasheet
1.C8051F410DK.pdf
(270 pages)
Specifications of C8051F411-GMR
Processor Series
C8051F4x
Core
8051
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
32 KB
Data Ram Size
2.25 KB
Interface Type
I2C, SMBus, SPI, UART
Maximum Clock Frequency
50 MHz
Number Of Programmable I/os
20
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
QFN
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F410DK
Minimum Operating Temperature
- 40 C
On-chip Adc
12 bit, 20 Channel
On-chip Dac
12 bit, 2 Channel
Package
28QFN EP
Device Core
8051
Family Name
C8051F41x
Maximum Speed
50 MHz
Ram Size
2.25 KB
Operating Supply Voltage
1.8|2.5|3.3|5 V
Operating Temperature
-40 to 85 °C
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F411-GMR
Manufacturer:
SiliconL
Quantity:
3 000
Part Number:
C8051F411-GMR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
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C8051F410/1/2/3
Depending on the output connected to the ADC input, additional tracking time, more than is specified in
Table 5.3 and Table 5.4, may be required after changing MUX settings. See the settling time requirements
described in
5.3.3. Timing
ADC0 has a maximum conversion speed specified in Table 5.3 and Table 5.4. ADC0 is clocked from the
ADC0 Subsystem Clock (FCLK). The source of FCLK is selected based on the BURSTEN bit. When
BURSTEN is logic 0, FCLK is derived from the current system clock. When BURSTEN is logic 1, FCLK is
derived from the Burst Mode Oscillator, an independent clock source with a maximum frequency of
25 MHz.
When ADC0 is performing a conversion, it requires a clock source that is typically slower than FCLK. The
ADC0 SAR conversion clock (SAR clock) is a divided version of FCLK. The divide ratio can be configured
using the AD0SC bits in the ADC0CF register. The maximum SAR clock frequency is listed in Table 5.3
and Table 5.4.
ADC0 can be in one of three states at any given time: tracking, converting, or idle. Tracking time depends
on the tracking mode selected. For Pre-Tracking Mode, tracking is managed by software and ADC0 starts
conversions immediately following the convert start signal. For Post-Tracking and Dual-Tracking Modes,
the tracking time after the convert start signal is equal to the value determined by the AD0TK bits plus 2
FCLK cycles. Tracking is immediately followed by a conversion. The ADC0 conversion time is always 13
SAR clock cycles plus an additional 2 FCLK cycles to start and complete a conversion. Figure 5.4 shows
timing diagrams for a conversion in Pre-Tracking Mode and tracking plus conversion in Post-Tracking or
Dual-Tracking Mode. In this example, repeat count is set to one.
54
Dual-Tracking
Post-Tracking
Convert Start
Pre-Tracking
AD0TM = 10
AD0TM = 11
AD0TM= 01
Section “5.3.6. Settling Time Requirements” on page 58
Track
Track
Idle
Track
Track
Figure 5.3. ADC0 Tracking Modes
Convert
Rev. 1.1
Convert
Convert
Track
.
Track
Idle
Track
Track
Convert ...
Convert..
Convert..
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