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HC05 Datasheet(PDF) 33 Page - Motorola, Inc

Part # HC05
Description  High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
PDF  232 Pages
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Manufacturer  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

HC05 Datasheet(HTML) 33 Page - Motorola, Inc

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MC68HC05X16
Rev. 1
MOTOROLA
2-9
MODES OF OPERATION AND PIN DESCRIPTIONS
2
Figure 2-4 STOP and WAIT flow charts
Generatewatchdog
interrupt
Timer interrupt ?
SCI ?
Stop oscillator and all
clocks.
Clear I bit.
STOP
WAIT
Reset ?
CIRQ,
wired-OR, external
interrupt?
Reset ?
Watchdog active?
(1) Fetch reset vector or
(2) Service interrupt:
a. stack
b. set I-bit
c. vector to interrupt
routine
(1) Fetch reset vector or
(2) Service interrupt:
a. stack
b. set I-bit
c. vector to interrupt
routine
Turn on oscillator.
Wait for time delay to
stabilise
Restart processor clock
YES
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Oscillator active. Timer,
SCI, A/D, EEPROM clocks
active. Processor clocks
stopped. Clear I-bit
WOI ?
CIRQ ?
YES
NO
31



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