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7220 датащи(PDF) 119 Page - Renesas Technology Corp

номер детали 7220
подробное описание детали  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  303 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7220 датащи(HTML) 119 Page - Renesas Technology Corp

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2-92
7220 Group User’s Manual
FUNCTIONAL DESCRIPTION
2.14 Low-power dissipation mode
Fig. 2.14.1 Oscillation stabilizing time at return by reset input
Fig. 2.14.2 Execution sequence example at return by occurrence of INT0 interrupt request
Timer 4
counter
lWhen returning from stop mode by using INT1 interrupt (rising edge selected)
XIN
(System clock)
“FF16”
INT1 pin
Peripheral device
CPU
Stop mode
Timer 3
counter
“0716”
2048 counts
•INT1 interrupt
signal is input
(INT1 interrupt
request occurs)
•Oscillation starts
•Timer 3 count starts
•Execute STP
instruction
Stopping
Operating
Stopping
Operating
Oscillation stabilizing time
(approximately 32768 cycles)
XIN; HIGH
XCIN; in high-impedance state
Oper-
ating
INT1 interrupt
request bit
•2048 counts down by timer 3
•Supplying internal clock
φ
to CPU is started
•INT1 interrupt request is accepted
Oper-
ating
RESET
XIN
VCC
Execute STP instruction
Returned by reset input
Oscillation stabilizing time
Stop mode
2
µs or more
Time to hold internal reset state =
approximately 32768 cycles of XIN
input
(Note)



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