C8051F321R Silicon Laboratories Inc, C8051F321R Datasheet - Page 172

• 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
172
Bit7:
Bit6:
Bits5-0:
Bits7-0:
Bits7-2:
Bits1-0:
DBOEN
Figure 15.25. EOUTCSRH: USB0 OUT Endpoint Control Low Byte (USB Register)
R/W
Bit7
Bit7
Bit7
R
R
-
Figure 15.27. EOUTCNTH: USB0 OUT Endpoint Count High (USB Register)
Figure 15.26. EOUTCNTL: USB0 OUT Endpoint Count Low (USB Register)
DBOEN: Double-buffer Enable
0: Double-buffering disabled for the selected OUT endpoint.
1: Double-buffering enabled for the selected OUT endpoint.
ISO: Isochronous Transfer Enable
This bit enables/disables isochronous transfers on the current endpoint.
0: Endpoint configured for bulk/interrupt transfers.
1: Endpoint configured for isochronous transfers.
Unused. Read = 000000b; Write = don’t care.
EOCL: OUT Endpoint Count Low Byte
EOCL holds the lower 8-bits of the 10-bit number of data bytes in the last received packet in the cur-
rent OUT endpoint FIFO. This number is only valid while OPRDY = ‘1’.
Unused. Read = 00000. Write = don’t care.
EOCH: OUT Endpoint Count High Byte
EOCH holds the upper 2-bits of the 10-bit number of data bytes in the last received packet in the cur-
rent OUT endpoint FIFO. This number is only valid while OPRDY = ‘1’.
ISO
R/W
Bit6
Bit6
Bit6
R
R
-
R/W
Bit5
Bit5
Bit5
R
R
-
-
R/W
Bit4
Bit4
Bit4
R
R
-
-
EOCL
Rev. 1.1
Bit3
Bit3
Bit3
R
R
R
-
-
Bit2
Bit2
Bit2
R
R
R
-
-
Bit1
Bit1
Bit1
R
R
R
-
E0CH
Bit0
Bit0
Bit0
R
R
R
-
USB Address:
USB Address:
USB Address:
00000000
00000000
00000000
Reset Value
Reset Value
Reset Value
0x15
0x16
0x17