upd78f0114m6gb-8es Renesas Electronics Corporation., upd78f0114m6gb-8es Datasheet - Page 100
upd78f0114m6gb-8es
Manufacturer Part Number
upd78f0114m6gb-8es
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0114M6GB-8ES.pdf
(534 pages)
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5.1 Functions of Clock Generator
5.2 Configuration of Clock Generator
100
The clock generator generates the clock to be supplied to the CPU and peripheral hardware.
The following three system clock oscillators are available.
• X1 oscillator
• Ring-OSC oscillator
• Subsystem clock oscillator
The clock generator includes the following hardware.
Control registers
Oscillators
Note Expanded-specification products of standard products and (A) grade products: f
Remarks 1. f
The X1 oscillator oscillates a clock of f
STOP instruction or setting the main OSC control register (MOC) and processor clock control register (PCC).
The Ring-OSC oscillator oscillates a clock of f
Ring-OSC mode register (RCM) when “Can be stopped by software” is set by a mask option and the X1 input
clock is used as the CPU clock.
The subsystem clock oscillator oscillates a clock of f
subsystem clock oscillator is not used, setting not to use the on-chip feedback resistor is possible using the
processor clock control register (PCC), and the operating current can be reduced in the STOP mode.
Conventional products of standard products, (A) grade products, and (A1) grade products: f
10.0 MHz
(A2) grade products: f
Item
2. f
3. f
XP
R
XT
:
: Subsystem clock oscillation frequency
: X1 input clock oscillation frequency
Ring-OSC clock oscillation frequency
Processor clock control register (PCC)
Ring-OSC mode register (RCM)
Main clock mode register (MCM)
Main OSC control register (MOC)
Oscillation stabilization time counter status register (OSTC)
Oscillation stabilization time select register (OSTS)
X1 oscillator
Ring-OSC oscillator
Subsystem clock oscillator
XP
Table 5-1. Configuration of Clock Generator
CHAPTER 5 CLOCK GENERATOR
= 2.0 to 8.38 MHz
User’s Manual U16227EJ3V0UD
XP
= 2.0 to 12.0 MHz
R
= 240 kHz (TYP.). Oscillation can be stopped by setting the
XT
= 32.768 kHz. Oscillation cannot be stopped. When
Configuration
Note
. Oscillation can be stopped by executing the
XP
= 2.0 to 12.0 MHz
XP
= 2.0 to
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