upd78f0124hgba1-8et-a Renesas Electronics Corporation., upd78f0124hgba1-8et-a Datasheet - Page 347
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upd78f0124hgba1-8et-a
Manufacturer Part Number
upd78f0124hgba1-8et-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0124HGBA1-8ET-A.pdf
(502 pages)
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(b) Release by RESET input
Internal oscillation
When the RESET signal is input, HALT mode is released, and then, as in the case with a normal reset
operation, the program is executed after branching to the reset vector address.
Remarks 1. f
RESET signal
Status of CPU
RESET signal
Status of CPU
system clock
High-speed
(high-speed system clock)
2. f
clock
(internal oscillation clock)
XP
R
: Internal oscillation clock oscillation frequency
: High-speed system clock oscillation frequency
Operating mode
Operating mode
(1) When high-speed system clock is used as CPU clock
(2) When internal oscillation clock is used as CPU clock
Figure 18-4. HALT Mode Release by RESET Input (1/2)
instruction
instruction
HALT
HALT
CHAPTER 18 STANDBY FUNCTION
Oscillates
Oscillates
User’s Manual U16962EJ3V0UD
HALT mode
HALT mode
Oscillation
stopped
period
Reset
Oscillation
stopped
period
Reset
Oscillation stabilization time
Operation
stopped
(17/f
Operation
stopped
(17/f
(2
R
11
)
Oscillates
/f
R
XP
)
Oscillates
to 2
(internal oscillation clock)
16
(internal oscillation clock)
/f
Operating mode
XP
Operating mode
)
Note
347
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