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Decapsulate Microcontroller MC68HC11F1 Silicon Package can help cracker to get access to the wafer die of it.

The PLL also may operate in manual mode (AUTO = 0). Manual mode is used by systems that do not require an indicator of the lock condition for proper operation by Freescale MC68HC11KS2 Memory Program Cloning. Such systems typically operate well below fBUSMAX and require fast start-up. The following conditions apply when in manual mode:

• ACQ is a writable control bit that controls the mode of the filter. Before turning on the PLL in manual mode, the ACQ bit must be clear to Duplicate Motorola MC68HC11E20 Flash Binary.

• Before entering tracking mode (ACQ = 1), software must wait a given time, tACQ (see 9.10 Acquisition/Lock Time Specifications), after turning on the PLL by setting PLLON in the PLL control register (PCTL).
• Software must wait a given time, tAL, after entering tracking mode before selecting the PLL as the clock source to CGMOUT
(BCS = 1).
• The LOCK bit is disabled.
• CPU interrupts from the CGM are disabled.

Decapsulate Microcontroller MC68HC11F1 Silicon Package

The following procedure shows how to program the PLL by Extract IC.

NOTE: The round function in the following equations means that the real number should be rounded to the nearest integer number.
1. Choose the desired bus frequency, fBUSDES.
2. Calculate the desired VCO frequency (four times the desired bus frequency).

3. Choose a practical PLL reference frequency, fRCLK.
4. Select a VCO frequency multiplier, N.

Select a VCO linear range multiplier, L. æfVCLKö fNOML  =  round ———— where fNOM = 4.9152MHz

Calculate and verify the adequacy of the VCO programmed center-of-range frequency fVRS. fVRS = (L)fNOM

Verify the choice of N and L by comparing fVCLK to fVRS and fVCLKDES. For proper operation, fVCLK must be within the application’s tolerance of fVCLKDES, and fVRS must be as close as possible to fVCLK.

Exceeding the recommended maximum bus frequency or VCO frequency can cause the MCU to “crash”.