UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 130

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

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

130
(1) Example of setting procedure when restarting oscillation of the internal high-speed oscillation clock
(2) Example of setting procedure when using internal high-speed oscillation clock as CPU clock, and
<1> Setting restart of oscillation of the internal high-speed oscillation clock (RCM register)
<2> Waiting for the oscillation accuracy stabilization time of internal high-speed oscillation clock (RCM
Notes 1. After a reset release, the internal high-speed oscillator automatically starts oscillating and the
internal high-speed oscillation clock or high-speed system clock as peripheral hardware clock
<1>
<2> Selecting the clock supplied as the main system clock and peripheral hardware clock (MCM register)
<3> Selecting the CPU clock division ratio (PCC register)
When RSTOP is cleared to 0, the internal high-speed oscillation clock starts operating.
register)
Wait until RSTS is set to 1
Set the main system clock and peripheral hardware clock using XSEL and MCM0.
When CSS is cleared to 0, the main system clock is supplied to the CPU. To select the CPU clock
division ratio, use PCC0, PCC1, and PCC2.
2. This wait time is not necessary if high accuracy is not necessary for the CPU clock and peripheral
Restarting oscillation of the internal high-speed oscillation clock
(See 5.6.2 (1) Example of setting procedure when restarting oscillation of the internal high-
speed oscillation clock).
Oscillating the high-speed system clock
(This setting is required when using the high-speed system clock as the peripheral hardware clock.
See 5.6.1 (1) Example of setting procedure when oscillating the X1 clock and (2) Example of
setting procedure when using the external main system clock.)
Note The setting of <1> is not necessary when the internal high-speed oscillation clock or high-
XSEL
CSS
internal high-speed oscillation clock is selected as the CPU clock.
hardware clock.
0
0
1
0
speed system clock is already operating.
MCM0
PCC2
0
1
0
0
0
0
0
1
Other than above
Internal high-speed oscillation clock
(f
Selection of Main System Clock and Clock Supplied to Peripheral Hardware
RH
Note 2
PCC1
)
CHAPTER 5 CLOCK GENERATOR
0
0
1
1
0
Main System Clock (f
.
User’s Manual U18698EJ1V0UD
PCC0
0
1
0
1
0
Note
f
f
f
f
f
Setting prohibited
XP
XP
XP
XP
XP
XP
)
/2 (default)
/2
/2
/2
2
3
4
CPU Clock (f
Internal high-speed oscillation clock
(f
High-speed system clock (f
RH
Peripheral Hardware Clock (f
)
Note
CPU
) Selection
XH
)
PRS
)
Note 1