upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 357
upd78f0114hgb-8es-a
Manufacturer Part Number
upd78f0114hgb-8es-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0114HGB-8ES-A.pdf
(505 pages)
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19.4 Operation of Clock Monitor
This section explains the functions of the clock monitor. The monitor start and stop conditions are as follows.
<Monitor start condition>
<Monitor stop condition>
Note The internal oscillation clock is stopped only when the “internal oscillator can be stopped by software” is
The clock monitor timing is as shown in Figure 19-3.
CPU Operation Clock
High-speed system
clock
Internal oscillation
clock
When bit 0 (CLME) of the clock monitor mode register (CLM) is set to operation enabled (1).
Remark MSTOP: Bit 7 of main OSC control register (MOC)
Reset is released and during the oscillation stabilization time
In STOP mode and during the oscillation stabilization time
When the high-speed system clock is stopped by software (MSTOP = 1 or MCC = 1) and during the
oscillation stabilization time
When the internal oscillation clock is stopped
selected by the option byte. If “internal oscillator cannot be stopped” is selected, the internal oscillation
clock cannot be stopped.
MCC:
Table 19-2. Operation Status of Clock Monitor (When CLME = 1)
STOP mode
RESET input
Normal operation mode
HALT mode
STOP mode
RESET input
Normal operation mode
HALT mode
Bit 7 of processor clock control register (PCC)
Operation Mode
CHAPTER 19 CLOCK MONITOR
User’s Manual U16961EJ4V0UD
Stopped
Oscillating
Stopped
Oscillating
Stopped
High-Speed System
Clock Status
Oscillating
Stopped
Oscillating
Stopped
Oscillating
Stopped
Oscillating
Internal Oscillation
Clock Status
Note
Note
Note
Stopped
Operating
Stopped
Stopped
Operating
Stopped
Clock Monitor Status
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