C8051F330 Silicon Laboratories Inc, C8051F330 Datasheet - Page 22
C8051F330
Manufacturer Part Number
C8051F330
Description
IC 8051 MCU 8K FLASH 20MLP
Manufacturer
Silicon Laboratories Inc
Series
C8051F33xr
Datasheet
1.C8051F330R.pdf
(208 pages)
Specifications of C8051F330
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
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 16x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-QFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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C8051F330/1, C8051F330D
1.7.
The C8051F330 and C8051F330D devices include an on-chip 10-bit SAR ADC with a 16-channel differen-
tial input multiplexer. With a maximum throughput of 200 ksps, the ADC offers true 10-bit linearity with an
INL and DNL of ±1LSB. The ADC system includes a configurable analog multiplexer that selects both pos-
itive and negative ADC inputs. Ports0-1 are available as an ADC inputs; additionally, the on-chip Tempera-
ture Sensor output and the power supply voltage (
shut down the ADC to save power.
Conversions can be started in six ways: a software command, an overflow of Timer 0, 1, 2, or 3, or an
external convert start signal. This flexibility allows the start of conversion to be triggered by software
events, a periodic signal (timer overflows), or external HW signals. Conversion completions are indicated
by a status bit and an interrupt (if enabled). The resulting 10-bit data word is latched into the ADC data
SFRs upon completion of a conversion.
Window compare registers for the ADC data can be configured to interrupt the controller when ADC data is
either within or outside of a specified range. The ADC can monitor a key voltage continuously in back-
ground mode, but not interrupt the controller unless the converted data is within/outside the specified
range.
22
Sensor
Temp
VREF
GND
10-Bit Analog to Digital Converter
P0.0
P0.7
P1.0
P1.7
VDD
P0.0
P0.7
P1.0
P1.7
18-to-1
18-to-1
AMUX
AMUX
Figure 1.10. 10-Bit ADC Block Diagram
AMX0P
AMX0N
Rev. 1.2
V
DD ) are available as ADC inputs. User firmware may
(+)
(-)
ADC0CF
ADC
10-Bit
VDD
SAR
ADC0GTH ADC0GTL
ADC0LTH
ADC0CN
ADC0LTL
Conversion
Start
000
001
010
011
100
101
32
AD0WINT
Compare
Window
AD0BUSY (W)
Timer 0 Overflow
Timer 2 Overflow
Timer 1 Overflow
CNVSTR Input
Timer 3 Overflow
Logic