MC68HC05L16 Datasheet, PDF (48/146 Pages) Freescale Semiconductor, Inc – Microcontrollers

Low-Power Modes
STATE A
CPU: RUN
PH2: X1/2
X1:
ON
X2:
ON
RESET
INT
STATE B
CPU: RUN
PH2: X1/4
X1: ON
X2: ON
STATE C
CPU: RUN
PH2: X1/64
X1: ON
X2: ON
STATE A
STATE B
STATE C
STATE D
CPU: RUN
PH2: X2/2
X1: ON
X2: ON
STOP
DELAY
RESET
INT
STOP
X1EN = 0
X1EN = 1
RESET
INT
STOP
STATE E
CPU: RUN
PH2: X2/2
X1: OFF
X2: ON
POWER-ON
STATE D
STATE E
INT
Notes:
PH2 is at same frequency as internal processor clock E.
X1 = OSC
X2 = XOSC
X1EN = FOSCE
Low Power
High Speed
STOP ↔ E ↔ D ↔ C ↔ B ↔ A
Figure 5-1. Clock State and STOP Recovery/Power-On Reset Delay Diagrams
MC68HC05L16 • MC68HC705L16 Data Sheet, Rev. 4.1
48
Freescale Semiconductor