参数资料
型号: MC68HC05V7FN
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC68
封装: PLASTIC, LCC-68
文件页数: 10/170页
文件大小: 589K
代理商: MC68HC05V7FN
SECTION 15: MESSAGE DATA LINK CONTROLLER
MOTOROLA
Page 93
MC68HC05V7 Specification Rev. 1.0
15.1.1
MDLC OPERATING MODES
The MDLC has five main modes of operation that interact with the power supplies, pins, the
and rest of the MCU as shown below.
15.1.2
MODE DESCRIPTIONS
15.1.2.1
Power Off
This mode is entered from the Reset mode whenever the MCU supply voltage VDD drops
below the minimum specified value to guarantee correct MDLC operation. In order to
ensure that the MDLC does not enter an unknown state, it will first be placed in the Reset
mode before being powered down. In this mode, the pin input and output specifications are
not guaranteed.
VDD > Vmdlc(Min.) and
Power Off
Figure 15-1:
MDLC Operating Modes State Diagram
Reset
MDLC Stop
Run
VDD ≤ Vmdlc(Min.)
STOP instruction or
(from any mode)
MDLC Wait
RXMS=1 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 wake-up
(COP, ILLADDR, P.U., RESET, LVR, POR
DISABLED STOP)
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