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MC68HC08AS32A Datasheet(PDF) 66 Page - Motorola, Inc

No. de Pieza. MC68HC08AS32A
Descripción  Microcontrollers
Descarga  296 Pages
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Fabricante  MOTOROLA [Motorola, Inc]
Página de inicio  http://www.freescale.com
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MC68HC08AS32A Datasheet(HTML) 66 Page - Motorola, Inc

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Byte Data Link Controller-Digital (BDLC-D)
Data Sheet
MC68HC08AS32A — Rev. 1
66
Byte Data Link Controller-Digital (BDLC-D)
MOTOROLA
4.3.1 BDLC Operating Modes
The BDLC has five main modes of operation which interact with the power
supplies, pins, and the remainder of the MCU as shown in Figure 4-4.
Figure 4-4. BDLC Operating Modes State Diagram
4.3.1.1 Power Off Mode
This mode is entered from reset mode whenever the BDLC supply voltage, V
DD,
drops below its minimum specified value for the BDLC to guarantee operation. The
BDLC will be placed in reset mode by low-voltage reset (LVR) before being
powered down. In this mode, the pin input and output specifications are not
guaranteed.
4.3.1.2 Reset Mode
This mode is entered from the power off mode whenever the BDLC supply voltage,
V
DD, rises above its minimum specified value (VDD –10%) and some MCU reset
source is asserted. The internal MCU reset must be asserted while powering up
the BDLC or an unknown state will be entered and correct operation cannot be
guaranteed. Reset mode is also entered from any other mode as soon as one of
V
DD > VDD (MINIMUM) AND
POWER OFF
RESET
BDLC STOP
RUN
V
DD ≤ VDD (MINIMUM)
STOP INSTRUCTION OR
(FROM ANY MODE)
BDLC WAIT
NETWORK ACTIVITY OR
WAIT INSTRUCTION AND WCM = 1
WAIT INSTRUCTION AND WCM = 0
ANY MCU RESET SOURCE ASSERTED
NO MCU RESET SOURCE ASSERTED
ANY MCU RESET SOURCE ASSERTED
NETWORK ACTIVITY OR
OTHER MCU WAKEUP
OTHER MCU WAKEUP
COP, ILLADDR, PU, RESET, LVR, POR
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


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