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MC68HC908GR4MP Datasheet(PDF) 132 Page - Freescale Semiconductor, Inc |
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MC68HC908GR4MP Datasheet(HTML) 132 Page - Freescale Semiconductor, Inc |
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132 / 286 page  Monitor ROM (MON) MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7 132 Freescale Semiconductor Figure 15-1. Monitor Mode Circuit + + + VDDA MC145407 MC74HC125 RST IRQ VDDA CGMXFC OSC1 OSC2 VSS VDD PTA0 VDD 10 k Ω 0.1 μF 10 k Ω 6 5 2 4 3 1 DB-25 2 3 7 20 18 17 19 16 15 VDD VDD VDD 10 μF 10 μF 10 μF 10 μF 1 2 4 7 14 3 0.1 μF 5 6 + PTB0 PTB1 68HC08 VSSAD/VREFL VSSA VDDAD/VREFH D C C C D D 6–30 pF 6–30 pF 32.768 kHz XTAL SW2 SW4 SW3 (SEE NOTE 2) (SEE NOTES 2 (SEE NOTE 2) (SEE NOTE 3) Notes: 1. SW2, SW3, and SW4: Position C — Enter monitor mode using external oscillator. SW2, SW3, and SW4: Position D — Enter monitor mode using external XTAL and internal PLL. 2. See Table 15-1. Monitor Mode Signal Requirements and Options for IRQ voltage level requirements. 10 k 0.033 μF VTST 330 k Ω AND 3) PTA1 VDD 10 k Ω 10 k Ω 10 k Ω |
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