MC68HC05V12 Datasheet, PDF (138/246 Pages) Freescale Semiconductor, Inc – HCMOS Microcontreller Unit

Freescale Semiconductor, Inc.
Byte Data Link Controller – Digital
14.4.1 BDLC Operating Modes
The BDLC has five main modes of operation which interact with the
power supplies, pins, and reset of the MCU as shown in Figure 14-3.
POWER OFF
V_DD ≤ V_DD (MINIMUM)
V_DD > V_DD (MINIMUM) AND
ANY MCU RESET SOURCE ASSERTED
RESET
ANY MCU RESET SOURCE ASSERTED
FROM ANY MODE
(COP, ILLADDR, PU, RESET, LVR, POR)
NO MCU RESET SOURCE ASSERTED
NETWORK ACTIVITY OR
OTHER MCU WAKEUP
RUN
NETWORK ACTIVITY OR
OTHER MCU WAKEUP
BDLC STOP
STOP INSTRUCTION OR
WAIT INSTRUCTION AND WCM = 1
BDLC WAIT
WAIT INSTRUCTION AND WCM = 0
Figure 14-3. BDLC Operating Modes State Diagram
Technical Data
Byte Data Link Controller – Digital (BDLC–D)
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MC68HC05V12 — Rev. 2.0