7513 datasheet(51/66 Pages) RENESAS

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SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

7513 Group

Fig. 56 State transitions of system clock

Low-power dissipation

mode (f(

φ) =16 kHz)

Notes 1 : Switch the mode by the allows shown between the mode blocks. (Do not switch between the mode directly without an allow.)

2 : The all modes can be switched to the stop mode or the wait mode and returned to the source mode when the stop mode or the wait mode is ended.

3 : Timer and LCD operate in the wait mode.

4 : When the stop mode is ended, wait time can be set by connecting timer 1 and timer 2 in middle-/high-speed mode.

5 : When the stop mode is ended, wait time can be set by connecting timer 1 and timer 2 in low-speed mode.

6 : Wait until oscillation stabilizes after oscillating the main clock XIN before the switching from the low-speed mode to middle-/high-speed mode.

7 : The example assumes that 8 MHz is being applied to the XIN pin and 32 kHz to the XCIN pin.

φ indicates the internal clock.

CM4 : Sub-clock (XCIN–XCOUT) stop bit

0: Stopped

1: Oscillating

CM5 : Main clock (XIN–XOUT) stop bit

0: Oscillating

1: Stopped

CM6 : Main clock division ratio selection bit

0: f(XIN)/2 (high-speed mode)

1: f(XIN)/8 (middle-speed mode)

CM7 : Internal system clock selection bit

0: XIN–XOUT selected

(middle-/high-speed mode)

1: XCIN–XCOUT selected

(low-speed mode)

CPU mode register

(CPUM : address 003B16)

Reset

CM6

“0”

“1”

Middle-speed mode (f(

φ) =1 MHz)

Middle-speed mode (f(

φ) =1 MHz)

High-speed mode (f(

φ) =4 MHz)

High-speed mode (f(

φ) =4 MHz)

Low-speed mode (f(

φ) =16 kHz)

Low-speed mode (f(

φ) =16 kHz)

Low-power dissipation

mode (f(

φ) =16 kHz)

CM6

“0”

“1”

CM6

“0”

“1”

CM6

“0”

“1”

CM7=0(8MHz selected)

CM6=1(Middle-speed)

CM5=0(8MHz oscillating)

CM4=0(32kHz stoped)

CM7=0(8MHz selected)

CM6=0(High-speed)

CM5=0(8MHz oscillating)

CM4=0(32kHz stoped)

CM7=0(8MHz selected)

CM6=1(Middle-speed)

CM5=0(8MHz oscillating)

CM4=1(32kHz oscillating)

CM7=0(8MHz selected)

CM6=0(High-speed)

CM5=0(8MHz oscillating)

CM4=1(32kHz oscillating)

CM7=1(32kHz selected)

CM6=0(High-speed)

CM5=0(8MHz oscillating)

CM4=1(32kHz oscillating)

CM7=1(32kHz selected)

CM6=1(Middle-speed)

CM5=0(8MHz oscillating)

CM4=1(32kHz oscillating)

CM7=1(32kHz selected)

CM6=1(Middle-speed)

CM5=1(8MHz stopped)

CM4=1(32kHz oscillating)

CM7=1(32kHz selected)

CM6=0(High-speed)

CM5=1(8MHz stopped)

CM4=1(32kHz oscillating)

7513 Datasheet(PDF) 51 Page - Renesas Technology Corp

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