MC68HC05T16 Datasheet, PDF(111/128 Page) Motorola, Inc – High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit

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MC68HC05T16 Datasheet, PDF (111/128 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit

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13

OPERATING MODES

The MC68HC05T16/MC68HC705T16 MCU has two modes of operation, the User Mode and the

Self-Check/Bootstrap Mode. Figure 13-1 shows the ï¬owchart of entry to these two modes, and

Table 13-1 shows operating mode selection.

5V

RESET

9V

N

IRQ

?

Y

USER MODE

(NORMAL MODE)

PC2 = VDD ?

Y

SELF-CHECK /

BOOTSTRAP

MODE

Note:

Self-check mode is for MC68HC05T16

Bootstrap mode is for MC68HC705T16

Figure 13-1 Flowchart of Mode Entering

13

MC68HC05T16

OPERATING MODES

TPG

MOTOROLA

13-1

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