Microcomputer PIC12LC671 Encrypted Heximal Unlocking

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The PIC12LC671 differentiates between various kinds of Reset:
Power-on Reset (POR)
WDT Reset during normal operation
WDT Reset during Sleep
MCLR Reset during normal operation
MCLR Reset during Sleep
Brown-out Reset (BOR)
Some registers are not affected in any Reset condition; their status is unknown on POR and unchanged in any other Reset. Most other registers are reset to a “Reset state” on when Microcomputer PIC12LC671 Encrypted Heximal Unlocking:
Power-on Reset
MCLR Reset
MCLR Reset during Sleep
WDT Reset
Brown-out Reset (BOR)
They are not affected by a WDT wake-up since this is viewed as the resumption of normal operation. TO and PD bits are set or cleared differently in different Reset situations, as indicated in Table 16-2. These bits are used in software to determine the nature of the Reset if Microcomputer PIC12LC671 Encrypted Heximal Unlocking.
See Table 16-5 for a full description of Reset states of all registers. A simplified block diagram of the On-Chip Reset Circuit is shown in Figure 16-1. The MCLR Reset path has a noise filter to detect and ignore small pulses. See Section 19.0 “Electrical Specifications” for pulse width specifications.
The on-chip POR circuit holds the chip in Reset until VDD has reached a high enough level for proper operation. To take advantage of the POR, simply connect the MCLR pin through a resistor to VDD. This will eliminate external RC components usually needed to create Power-on Reset after extract the encrypted heximal from Microcomputer.
A maximum rise time for VDD is required. See Section 19.0 “Electrical Specifications” for details. If the BOR is enabled, the maximum rise time specification does not apply. The BOR circuitry will keep the device in Reset until VDD reaches VBOR (see Section 16.3.3 “Brown-Out Reset (BOR)”) when UNLOCK MICROCONTROLLER.