C8051F320 Silicon Laboratories Inc, C8051F320 Datasheet - Page 67

• Manufacturer Part Number: C8051F320
• Description: IC 8051 MCU 16K FLASH 32LQFP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F320

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: SMBus (2-Wire/I²C), SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 25
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 17x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

C8051F320/1
8.
VOLTAGE REGULATOR (REG0)
C8051F320/1 devices include a 5 V-to-3 V voltage regulator (REG0). When enabled, the REG0 output appears on
the VDD pin and can be used to power external devices. REG0 can be enabled/disabled by software using bit
REGEN in register REG0CN. See Table 8.1 for REG0 electrical characteristics.
Note that the VBUS signal must be connected to the VBUS pin when using the device in a USB network. The VBUS
signal should only be connected to the REGIN pin when operating the device as a bus-powered function. REG0 con-
figuration options are shown in Figure 8.1 - Figure 8.4.
Rev. 1.1
67