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M38B71M1 Datasheet(PDF) 73 Page - Renesas Technology Corp |
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M38B71M1 Datasheet(HTML) 73 Page - Renesas Technology Corp |
73 / 110 page ![]() 38B7 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER MITSUBISHI MICROCOMPUTERS 72 WIT instruction STP instruction Timing φ (internal clock) S R Q STP instruction S R Q Main clock stop bit (Note 3) S R Q 1/4 XIN XOUT XCOUT XCIN Interrupt request Reset Interrupt disable flag l 1/2 1/2 Port XC switch bit (Note 3) “1” “0” “1” Timer 1 count source selection bit (Note 2) Low-speed mode High-speed or middle-speed mode Middle-speed mode High-speed or low-speed mode Internal system clock selection bit (Notes 1, 3) “1” “0” Timer 1 Timer 2 Timer 2 count source selection bit (Note 2) “0” Main clock division ratio selection bits (Note 3) “1 ” “0 ” “1” “0” Notes 1: When low-speed mode is selected, set the port Xc switch bit (b4) to “1”. 2: Refer to the structure of the timer 12 mode register. 3: Refer to the structure of the CPU mode register. Fig. 81 Clock generating circuit block diagram |