C8051F321 Silicon Laboratories Inc, C8051F321 Datasheet - Page 69

• Manufacturer Part Number: C8051F321
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321

• 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: 21
• 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 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

8.2.
When the USB Function Controller is used (see section
page
the current logic level of the VBUS signal. If enabled, a VBUS interrupt will be generated when the VBUS signal
matches the polarity selected by the VBPOL bit in register REG0CN. The VBUS interrupt is level-sensitive, and has
no associated interrupt pending flag. The VBUS interrupt will be active as long as the VBUS signal matches the
polarity selected by VBPOL. See Table 8.1 for VBUS input parameters.
Important Note: When USB is selected as a reset source, a system reset will be generated when the VBUS signal
matches the polarity selected by the VBPOL bit. See
USB as a reset source.
VDD = 3.0 V; -40°C to +85°C unless otherwise specified
Input Voltage Range
Output Voltage
VBUS Detection Input Threshold
Bias Current
143), the VBUS signal should be connected to the VBUS pin. The VBSTAT bit (register REG0CN) indicates
VBUS Detection
PARAMETER
Table 8.1. Voltage Regulator Electrical Specifications
Output Current = 1 to 100 mA
Normal Mode (REGMOD = ‘0’)
Low Power Mode (REGMOD = ‘1’)
CONDITIONS
Section “10. Reset Sources” on page 99
Section “15. Universal Serial Bus Controller (USB0)” on
Rev. 1.1
MIN
4.0
3.0
1.0
C8051F320/1
TYP
3.3
1.8
90
60
for details on selecting
MAX UNITS
TBD
TBD
5.25
3.6
4.0
µA
V
V
V
69