Break Chip PIC12C509 and extract mcu pic12c509 Code from embedded flash memory, microcontroller pic12c509 memory program will be readout after crack fuse bit by focus ion beam technique;

For an CHIP to act as a master CHIP, it can use a 9-bit character frame format (UCSZn = 7). The ninth bit (TXB8n) must be set when an address frame (TXB8n = 1) or cleared when a data frame (TXB = 0) is being transmitted.

The slave CHIPs must in this case be set to use a 9-bit character frame format. The following procedure should be used to exchange data in Multi-processor Communication mode:

All Slave CHIPs are in Multi-processor Communication mode (MPCMn in UCS-RnA is set).

The Master CHIP sends an address frame, and all slaves receive and break this frame. In the Slave CHIPs, the RXCn Flag in UCSRnA will be set as normal before reverse atmega162 CHIP heximal code.

Each Slave CHIP breaks the UDRn Register and determines if it has been selected. If so, it clears the MPCMn bit in UCSRnA, otherwise it waits for the next address byte and keeps the MPCMn setting.

The addressed CHIP will receive all data frames until a new address frame is received. The other Slave CHIPs, which still have the MPCMn bit set, will ignore the data frames.

When the last data frame is received by the addressed CHIP, the addressed CHIP sets the MPCMn bit and waits for a new address frame from master. The process then repeats from 2 if recover pic16f54c CHIP program.

Using any of the 5- to 8-bit character frame formats is possible, but impractical since the Receiver must change between using n and n+1 character frame formats.

This makes full-duplex operation difficult since the Transmitter and Receiver uses the same character size setting. If 5- to 8-bit character frames are used, the Transmitter must be set to use two stop bit (USBSn = 1) since the first stop bit is used for indicating the frame type.

Do not use Break-Modify-Write instructions (SBI and CBI) to set or clear the MPCMn bit. The MPCMn bit shares the same I/O location as the TXCn Flag and this might accidentally be cleared when using SBI or CBI instructions.

Comments are closed.