C8051F320 Silicon Laboratories Inc, C8051F320 Datasheet - Page 159

• 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: -

Bits7-4:
Bit3:
Bit2:
Bit1:
Bit0:
Bit7
R
-
Unused. Read = 0000b; Write = don’t care.
SOF: Start of Frame Interrupt
Set by hardware when a SOF token is received. This interrupt event is synthesized by hardware: an
interrupt will be generated when hardware expects to receive a SOF event, even if the actual SOF sig-
nal is missed or corrupted.
This bit is cleared when software reads the CMINT register.
0: SOF interrupt inactive.
1: SOF interrupt active.
RSTINT: Reset Interrupt-pending Flag
Set by hardware when Reset signaling is detected on the bus.
This bit is cleared when software reads the CMINT register.
0: Reset interrupt inactive.
1: Reset interrupt active.
RSUINT: Resume Interrupt-pending Flag
Set by hardware when Resume signaling is detected on the bus while USB0 is in suspend mode.
This bit is cleared when software reads the CMINT register.
0: Resume interrupt inactive.
1: Resume interrupt active.
SUSINT: Suspend Interrupt-pending Flag
When Suspend detection is enabled (bit SUSEN in register POWER), this bit is set by hardware when
Suspend signaling is detected on the bus. This bit is cleared when software reads the CMINT register.
0: Suspend interrupt inactive.
1: Suspend interrupt active.
Figure 15.16. CMINT: USB0 Common Interrupt (USB Register)
Bit6
R
-
Bit5
R
-
Bit4
R
-
SOF
Bit3
R
Rev. 1.1
RSTINT
Bit2
R
RSUINT
Bit1
R
C8051F320/1
SUSINT
Bit0
R
USB Address:
00000000
Reset Value
0x06
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