upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 335

• Manufacturer Part Number: upd78f0114hgb-8es-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

17.1 Standby Function and Configuration
17.1.1 Standby function
Notes 1.
Caution The RSTOP setting is valid only when “Can be stopped by software” is set for internal oscillator by
Remark MSTOP: Bit 7 of the main OSC control register (MOC)
Operation
Mode
Reset
STOP
HALT
2.
3.
4.
Status
the option byte.
MCC:
RSTOP: Bit 0 of the internal oscillation mode register (RCM)
MCM0:
When “Cannot be stopped” is selected for internal oscillator by the option byte.
When “Can be stopped by software” is selected for internal oscillator by the option byte.
Operates using the CPU clock at STOP instruction execution.
Operates using the CPU clock at HALT instruction execution.
MSTOP = 0
Stopped
Oscillating
MCC = 0
Table 17-1. Relationship Between Operation Clocks in Each Operation Status
High-Speed System
Clock Oscillator
Bit 7 of the processor clock control register (PCC)
Bit 0 of the main clock mode register (MCM)
MSTOP = 1
Stopped
MCC = 1
CHAPTER 17 STANDBY FUNCTION
Stopped
Oscillating
Note 1
User’s Manual U16961EJ4V0UD
Internal Oscillator
RSTOP = 0 RSTOP = 1
Oscillating
Note 2
Stopped
Subsystem
Oscillating
Oscillator
Clock
CPU Clock
Internal
oscillation
clock
Note 3
Note 4
Release
After
Supplied to Peripherals
MCM0 = 0
Stopped
Stopped
Internal
oscillation
clock
Prescaler Clock
High-
speed
system
clock
MCM0 = 1
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