MC68HC05RC8 Datasheet, PDF (54/122 Pages) Freescale Semiconductor, Inc – General Release Specification

Freescale Semiconductor, Inc.
Low-Power Modes
OSC1¹
RESET
IRQ²
IRQ³
tRL
tLIH
tILCH
4064 t_CYC
INTERNAL
CLOCK
INTERNAL
ADDRESS
BUS
3FFE 3FFE 3FFE 3FFE 3FFF
NOTES:
1. Represents the internal gating of the OSC1 pin
2. IRQ pin edge-sensitive mask option
3. IRQ pin level and edge-sensitive mask option
RESET OR INTERRUPT
VECTOR FETCH
Figure 6-1. Stop Recovery Timing Diagram
6.4 Stop Recovery
The processor can be brought out of stop mode only by an external
interrupt, LPRST, or RESET. Refer to Figure 6-1.
NOTE: If an external interrupt is pending when stop mode is entered, then stop
mode will be exited immediately.
6.5 Wait Mode
The WAIT instruction places the MCU in a low power-consumption
mode, but wait mode consumes more power than stop mode. All CPU
action is suspended, but the core timer, the oscillator, and any enabled
module remain active. Any interrupt or reset will cause the MCU to exit
wait mode. The user must shut off subsystems to reduce power
General Release Specification
MC68HC05RC16 — Rev. 3.0
Low-Power Modes
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