UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 106
UPD78F0413GA-GAM-AX
Manufacturer Part Number
UPD78F0413GA-GAM-AX
Description
8BIT UC, 32K FLASH, 1KB RAM, LCD
Manufacturer
NEC
Datasheet
1.UPD78F0413GA-GAM-AX.pdf
(562 pages)
Specifications of UPD78F0413GA-GAM-AX
Controller Family/series
UPD78F
No. Of I/o's
30
Ram Memory Size
1024Byte
Cpu Speed
10MHz
No. Of Timers
8
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
32KB
Oscillator Type
External, Internal
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5.1 Functions of Clock Generator
106
The clock generator generates the clock to be supplied to the CPU and peripheral hardware.
The following three kinds of system clocks and clock oscillators are selectable.
(1) Main system clock
(2) Subsystem clock
Remarks 1. f
<1> X1 oscillator
<2> Internal high-speed oscillator
An external main system clock (f
pin. An external main system clock input can be disabled by executing the STOP instruction or using RCM.
As the main system clock, a high-speed system clock (X1 clock or external main system clock) or internal high-
speed oscillation clock can be selected by using the main clock mode register (MCM).
Subsystem clock oscillator
This circuit oscillates at a frequency of f
and XT2.
operation mode select register (OSCCTL).
This circuit oscillates a clock of f
Oscillation can be stopped by executing the STOP instruction or using the main OSC control register
(MOC).
This circuit oscillates a clock of f
operating with this internal high-speed oscillation clock. Oscillation can be stopped by executing the
STOP instruction or using the internal oscillation mode register (RCM).
2. f
3. f
4. f
X
RH
EXCLK
XT
:
:
:
Oscillation can be stopped by using the processor clock control register (PCC) and clock
:
X1 clock oscillation frequency
Internal high-speed oscillation clock frequency
External main system clock frequency
XT1 clock oscillation frequency
CHAPTER 5 CLOCK GENERATOR
EXCLK
X
= 2 to 10 MHz) can also be supplied from the OCD0B/EXCLK/X2/P122
User’s Manual U18698EJ1V0UD
= 2 to 10 MHz by connecting a resonator to X1 and X2.
RH
XT
= 8 MHz (TYP.). After a reset release, the CPU always starts
= 32.768 kHz by connecting a 32.768 kHz resonator across XT1
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