AT89C5130A-M Atmel Corporation, AT89C5130A-M Datasheet - Page 145

• Manufacturer Part Number: AT89C5130A-M
• Manufacturer: Atmel Corporation

Specifications of AT89C5130A-M

• Flash (kbytes): 16 Kbytes
• Max. Operating Frequency: 48 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 1.25
• Eeprom (bytes): 1024
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART/USB
• Watchdog: Yes

4337K–USB–04/08
Table 21-10. UEPDATX Register
Reset Value = XXh
Table 21-11. UBYCTLX Register
Reset Value = 00h
Bit Number
Bit Number
BYCT7
FDAT7
7 - 0
7 - 0
7
7
Mnemonic
Mnemonic
FDAT
BYCT[7:0]
UEPDATX (S:CFh)
USB FIFO Data Endpoint X (X = EPNUM set in UEPNUM Register UEPNUM
(S:C7h) USB Endpoint Number)
UBYCTLX (S:E2h)
USB Byte Count Low Register X (X = EPNUM set in UEPNUM Register UEP-
NUM (S:C7h) USB Endpoint Number)
BYCT6
FDAT6
Bit
Bit
6
6
[7:0]
Description
Endpoint X FIFO data
Data byte to be written to FIFO or data byte to be read from the FIFO, for the Endpoint X
(see EPNUM).
Description
Byte Count LSB
Least Significant Byte of the byte count of a received data packet. The most significant
part is provided by the UBYCTHX Register UBYCTHX (S:E3h) USB Byte Count High
Register X (X = EPNUM set in UEPNUM Register UEPNUM (S:C7h) USB Endpoint
Number) (see Figure 21-11 on page 145). This byte count is equal to the number of data
bytes received after the Data PID.
BYCT5
FDAT5
5
5
BYCT4
FDAT4
4
4
BYCT3
FDAT3
3
3
AT89C5130A/31A-M
BYCT2
FDAT2
2
2
BYCT1
FDAT1
1
1
BYCT0
FDAT0
0
0
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