C8051F326 Datasheet, PDF (4/140 Pages) List of Unclassifed Manufacturers – Full Speed USB, 16 kB Flash MCU Family

C8051F326/7
7.5. Flash Error Reset.............................................................................................. 62
7.6. Software Reset ................................................................................................. 62
7.7. USB Reset ........................................................................................................ 62
8. Flash Memory ....................................................................................................... 65
8.1. Programming The Flash Memory ..................................................................... 65
8.1.1. Flash Lock and Key Functions ................................................................. 65
8.1.2. Flash Erase Procedure............................................................................. 65
8.1.3. Flash Write Procedure.............................................................................. 66
8.2. Non-volatile Data Storage................................................................................. 67
8.3. Security Options................................................................................................ 67
9. External RAM ........................................................................................................ 71
9.1. Accessing User XRAM...................................................................................... 71
9.2. Accessing USB FIFO Space............................................................................. 72
10. Oscillators ............................................................................................................... 73
10.1.Programmable Internal Oscillator ..................................................................... 73
10.1.1.Adjusting the Internal Oscillator on C8051F326/7 Devices...................... 74
10.1.2.Internal Oscillator Suspend Mode ............................................................ 74
10.2.Internal Low-Frequency (L-F) Oscillator ........................................................... 76
10.3.4x Clock Multiplier ............................................................................................ 77
10.4.System and USB Clock Selection .................................................................... 78
10.4.1.System Clock Selection ........................................................................... 78
10.4.2.USB Clock Selection................................................................................ 78
11. Port Input/Output .................................................................................................. 81
11.1.Port I/O Initialization ......................................................................................... 83
11.2.General Purpose Port I/O ................................................................................. 83
12. Universal Serial Bus Controller (USB0)................................................................ 89
12.1.Endpoint Addressing ........................................................................................ 90
12.2.USB Transceiver .............................................................................................. 90
12.3.USB Register Access ....................................................................................... 92
12.4.USB Clock Configuration.................................................................................. 96
12.5.FIFO Management ........................................................................................... 97
12.5.1.FIFO Split Mode ....................................................................................... 97
12.5.2.FIFO Double Buffering ............................................................................. 97
12.5.3.FIFO Access ............................................................................................ 98
12.6.Function Addressing......................................................................................... 99
12.7.Function Configuration and Control................................................................ 100
12.8.Interrupts ........................................................................................................ 103
12.9.The Serial Interface Engine ............................................................................ 106
12.10. Endpoint0..................................................................................................... 106
12.10.1.Endpoint0 SETUP Transactions .......................................................... 106
12.10.2.Endpoint0 IN Transactions................................................................... 107
12.10.3.Endpoint0 OUT Transactions............................................................... 107
12.11.Configuring Endpoint1.................................................................................. 110
12.12.Controlling Endpoint1 IN............................................................................... 110
12.12.1.Endpoint1 IN Interrupt or Bulk Mode.................................................... 110
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Rev. 0.5