C8051F321-GMR Silicon Laboratories Inc, C8051F321-GMR Datasheet - Page 152

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

Specifications of C8051F321-GMR

• 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
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2.25 KB
• Interface Type: I2C, SMBus, SPI, UART, USB
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F320DK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 13 Channel / 10 bit, 7 Channel
• Package: 28MLP
• Device Core: 8051
• Family Name: C8051F321
• Maximum Speed: 25 MHz
• Operating Supply Voltage: 3.3 V
• For Use With: 336-1480 - DAUGHTER CARD TOOLSTCK C8051F321336-1449 - ADAPTER PROGRAM TOOLSTICK F321336-1260 - DEV KIT FOR C8051F320/F321
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

C8051F320/1
15.8. Interrupts
The read-only USB0 interrupt flags are located in the USB registers shown in Figure 15.11 through
Figure 15.13. The associated interrupt enable bits are located in the USB registers shown in Figure 15.14
through Figure 15.16. A USB0 interrupt is generated when any of the USB interrupt flags is set to ‘1’. The
USB0 interrupt is enabled via the EIE1 SFR (see Section “9.3. Interrupt Handler” on page 87).
Note: Reading a USB interrupt flag register resets all flags in that register to ‘0’.
152
Bits7-0:
Bits7-3:
Bits2-0:
Bit7
Bit7
R
R
-
USB Register Definition 15.10. FRAMEH: USB0 Frame Number High
USB Register Definition 15.9. FRAMEL: USB0 Frame Number Low
Frame Number Low
This register contains bits7-0 of the last received frame number.
Unused. Read = 0. Write = don’t care.
Frame Number High Byte
This register contains bits10-8 of the last received frame number.
Bit6
Bit6
R
R
-
Bit5
Bit5
R
R
-
Frame Number Low
Bit4
Bit4
R
R
-
Rev. 1.4
Bit3
Bit3
R
R
-
Bit2
Bit2
R
R
Frame Number High
Bit1
Bit1
R
R
Bit0
Bit0
R
R
USB Address:
USB Address:
00000000
00000000
Reset Value
Reset Value
0x0D
0x0C