C8051F333-GM Silicon Laboratories Inc, C8051F333-GM Datasheet - Page 43
![IC 8051 MCU 4KB FLASH 20QFN](/photos/12/15/121597/c8051f333-gm_sml.jpg)
C8051F333-GM
Manufacturer Part Number
C8051F333-GM
Description
IC 8051 MCU 4KB FLASH 20QFN
Manufacturer
Silicon Laboratories Inc
Series
C8051F33xr
Specifications of C8051F333-GM
Program Memory Type
FLASH
Program Memory Size
4KB (4K x 8)
Package / Case
20-QFN
Core Processor
8051
Core Size
8-Bit
Speed
25MHz
Connectivity
SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
17
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
C8051F3x
Core
8051
Data Bus Width
8 bit
Data Ram Size
768 B
Interface Type
I2C/SMBus/SPI/UART
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
17
Number Of Timers
4
Operating Supply Voltage
2.7 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
KSK-SL-TOOLSTICK, PK51, CA51, A51, ULINK2
Development Tools By Supplier
C8051F330DK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
770-1006 - ISP 4PORT FOR SILABS C8051F MCU336-1451 - ADAPTER PROGRAM TOOLSTICK F330
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1267
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
C8051F333-GMR
Manufacturer:
SILICON LABS/芯科
Quantity:
20 000
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- Download datasheet (2Mb)
C8051F330/1/2/3/4/5
5.3.3. Settling Time Requirements
When the ADC0 input configuration is changed (i.e., a different AMUX0 selection is made), a minimum
tracking time is required before an accurate conversion can be performed. This tracking time is determined
by the AMUX0 resistance, the ADC0 sampling capacitance, any external source resistance, and the accu-
racy required for the conversion. Note that in low-power tracking mode, three SAR clocks are used for
tracking at the start of every conversion. For most applications, these three SAR clocks will meet the mini-
mum tracking time requirements.
Figure 5.4 shows the equivalent ADC0 input circuits for both Differential and Single-ended modes. Notice
that the equivalent time constant for both input circuits is the same. The required ADC0 settling time for a
given settling accuracy (SA) may be approximated by Equation 5.1. When measuring the Temperature
Sensor output or V
settling time requirements.
Where:
SA is the settling accuracy, given as a fraction of an LSB (for example, 0.25 to settle within 1/4 LSB)
t is the required settling time in seconds
R
n is the ADC resolution in bits (10).
46
TOTAL
is the sum of the AMUX0 resistance and any external source resistance.
Px.x
Px.x
RC
Differential Mode
MUX Select
MUX Select
Input
DD
= R
Equation 5.1. ADC0 Settling Time Requirements
with respect to GND, R
MUX
R
R
Figure 5.4. ADC0 Equivalent Input Circuits
* C
MUX
MUX
SAMPLE
= 5k
= 5k
t
=
C
C
ln
SAMPLE
SAMPLE
------ -
SA
2
= 5pF
= 5pF
n
TOTAL
Rev. 1.7
R
TOTAL
reduces to R
C
Px.x
SAMPLE
Single-Ended Mode
RC
MUX
MUX Select
Input
= R
. See Table 5.1 for ADC0 minimum
MUX
R
* C
MUX
SAMPLE
= 5k
C
SAMPLE
= 5pF
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