C8051F331

Operating Temperature Range :
Data Bus Width : 8 bit
Mounting Style : SMD/SMT
Core : 8051
Program Memory Size : 8 KB
Package / Case : QFN-20
Data RAM Size : 768 B
Processor Series : C8051
Maximum Clock Frequency : 25 MHz
On-Chip ADC : No
Operating Supply Voltage : 2.7 V to 3.6 V


Features:

The C8051F330/1/2/3/4/5 SoC family includes several key enhancements to the CIP-51 core and periph- erals to improve performance and ease of use in end applications.

The extended interrupt handler provides 14 interrupt sources into the CIP-51 (as opposed to 7 for the stan-dard 8051), allowing numerous analog and digital peripherals to interrupt the controller. An interrupt driven system requires less intervention by the MCU, giving it more effective throughput. The extra interrupt sources are very useful when building multi-tasking, real-time systems.

Eight reset sources are available: power-on reset circuitry (POR), an on-chip V_DDmonitor (forces reset when power supply voltage drops below V_RST as given in Table 10.1 on page 104), a Watchdog Timer, aMissing Clock Detector, a voltage level detection from Comparator0, a forced software reset, an externalreset pin, and an illegal Flash access protection circuit. Each reset source except for the POR, Reset Input Pin, or Flash error may be disabled by the user in software. The WDT may be permanently enabled in soft-ware after a power-on reset during MCU initialization.

The internal oscillator factory calibrated to 24.5 MHz ±2%. This internal oscillator period may be user pro-grammed in ~0.5% increments. An additional low-frequency oscillator is also available which facilitates low-power operation. An external oscillator drive circuit is included, allowing an external crystal, ceramic resonator, capacitor, RC, or CMOS clock source to generate the system clock. If desired, the system clocksource may be switched on-the-fly between both internal and external oscillator circuits. An external oscil-lator can also be extremely useful in low power applications, allowing the MCU to run from a slow (power saving) source, while periodically switching to the fast (up to 25 MHz) internal oscillator as needed.

Pinout






Specifications

Parameter	Conditions	Min	Typ	Max	Units
Ambient temperature under bias		55	-	125	°C
Storage Temperature		65	-	150	°C
Voltage on any Port I/O Pin or RST with respect to GND		0.3	-	5.8	V
Voltage on VDD with respect to GND		0.3	-	4.2	V
Maximum Total current through VDD or GND		-	-	500	mA
Maximum output current sunk by RST or any Port pin		-	-	100	mA
Note: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the devices at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Parameters:

Technical/Catalog Information	C8051F331
Vendor	Silicon Laboratories Inc
Category	Integrated Circuits (ICs)
Program Memory Size	8KB (8K x 8)
RAM Size	768 x 8
Number of I /O	17
Package / Case	20-QFN
Speed	25MHz
Controller Series	C8051F33x Flash
Oscillator Type	Internal
Packaging	Tube
Program Memory Type	FLASH
EEPROM Size	-
Core Processor	8051
Data Converters	-
Core Size	8-Bit
Operating Temperature	-40°C ~ 85°C
Connectivity	SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals	POR, PWM, WDT
Voltage - Supply (Vcc/Vdd)	2.7 V ~ 3.6 V
Drawing Number	*
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	C8051F331 C8051F331