C8051F321R Silicon Laboratories Inc, C8051F321R Datasheet - Page 70

• Manufacturer Part Number: C8051F321R
• Description: IC 8051 MCU 16K FLASH 28MLP
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F321R

• 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: -
• Other names: 336-1067-2

C8051F320/1
70
From VBUS
From VBUS
Power Net
Power Net
Power Net
From 5V
To 3V
To 3V
Figure 8.1. REG0 Configuration: USB Bus-Powered
Figure 8.2. REG0 Configuration: USB Self-Powered
REGIN
VBUS
REGIN
VBUS
VDD
VDD
C8051F320/1
C8051F320/1
Rev. 1.1
5V In
5V In
Voltage Regulator (REG0)
Voltage Regulator (REG0)
VBUS Sense
VBUS Sense
3V Out
3V Out
Power Net
Power Net
Device
Device