Intel 8XC196MD ユーザーズマニュアル
8XC196MC, MD, MH USER’S MANUAL
14-4
Figure 14-1. Clock Control During Power-saving Modes
14.3 IDLE MODE
In idle mode, the device’s power consumption decreases to approximately 40% of normal con-
sumption. Internal logic holds the CPU clocks at logic zero, causing the CPU to stop executing
instructions. Neither the peripheral clocks nor CLKOUT are affected, so the special-function reg-
isters (SFRs) and register RAM retain their data and the peripherals and interrupt system remain
active. Tables in Appendix B list the values of the pins during idle mode (see Table B-8 on page
B-23 for the 8XC196MC and 8XC196MD or Table B-9 on page B-25 for the 8XC196MH).
sumption. Internal logic holds the CPU clocks at logic zero, causing the CPU to stop executing
instructions. Neither the peripheral clocks nor CLKOUT are affected, so the special-function reg-
isters (SFRs) and register RAM retain their data and the peripherals and interrupt system remain
active. Tables in Appendix B list the values of the pins during idle mode (see Table B-8 on page
B-23 for the 8XC196MC and 8XC196MD or Table B-9 on page B-25 for the 8XC196MH).
A3115-02
Clock
Generators
CPU Clocks (PH1, PH2)
Divide-by-two
Circuit
XTAL1
XTAL2
F
XTAL1
Disable
Oscillator
(Powerdown)
Peripheral Clocks (PH1, PH2)
CLKOUT
Disable Clocks
(Powerdown)
Disable Clocks
(Idle, Powerdown)
(Idle, Powerdown)
NOTE: The CLKOUT pin is unique to the 8XC196MC and MD.
Disable Clock Input
(Powerdown)