C8051F327-GM Silicon Laboratories Inc, C8051F327-GM Datasheet - Page 92

• Manufacturer Part Number: C8051F327-GM
• Description: IC 8051 MCU FLASH 16K 28QFN
• Manufacturer: Silicon Laboratories Inc
• Series: C8051F32xr

Specifications of C8051F327-GM

• Program Memory Type: FLASH
• Program Memory Size: 16KB (16K x 8)
• Package / Case: 28-QFN
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: UART/USART, USB
• Peripherals: POR
• Number Of I /o: 15
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: C8051F3x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1.5 KB
• Interface Type: UART/USB
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 15
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: C8051F326DK
• Minimum Operating Temperature: - 40 C
• Package: 28QFN EP
• Device Core: 8051
• Family Name: C8051F327
• Maximum Speed: 25 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1481 - DAUGHTER CARD TOOLSTCK C8051F327770-1006 - ISP 4PORT FOR SILABS C8051F MCU
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1297-5

C8051F326/7
92
Bits7–4: Unused. Read = 0000b. Write = don’t care.
Bits3–0: EPSEL: Endpoint Select
R/W
Bit7
Bit7
—
R
This SFR is used to indirectly read and write USB0 registers.
Write Procedure:
1. Poll for BUSY (USB0ADR.7) => ‘0’.
2. Load the target USB0 register address into the USBADDR bits in register USB0ADR.
3. Write data to USB0DAT.
4. Repeat (Step 2 may be skipped when writing to the same USB0 register).
Read Procedure:
1. Poll for BUSY (USB0ADR.7) => ‘0’.
2. Load the target USB0 register address into the USBADDR bits in register USB0ADR.
3. Write ‘1’ to the BUSY bit in register USB0ADR (steps 2 and 3 can be performed in the
4. Poll for BUSY (USB0ADR.7) => ‘0’.
5. Read data from USB0DAT.
6. Repeat from Step 2 (Step 2 may be skipped when reading the same USB0 register; Step 3
These bits select which endpoint is targeted when indexed USB0 registers are accessed.
same write).
may be skipped when the AUTORD bit (USB0ADR.6) is logic 1).
USB Register Definition 12.4. INDEX: USB0 Endpoint Index
R/W
Bit6
Bit6
—
0x2–0xF
R
INDEX
USB Register Definition 12.3. USB0DAT: USB0 Data
0x0
0x1
R/W
Bit5
Bit5
—
R
Target Endpoint
RESERVED
R/W
Bit4
Bit4
—
R
USB0DAT
0
1
Rev. 1.1
R/W
R/W
Bit3
Bit3
R/W
R/W
Bit2
Bit2
EPSEL
R/W
R/W
Bit1
Bit1
R/W
R/W
Bit0
Bit0
SFR Address:
USB Address:
00000000
00000000
Reset Value
Reset Value
0x0E
0x97