UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 118

• 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

(9) Internal high-speed oscillation trimming register (HIOTRM)
118
This register corrects the accuracy of the internal high-speed oscillator. The accuracy can be corrected by self-
measuring the frequency of the internal high-speed oscillator, using a subsystem clock using a crystal resonator
or using a timer with high-accuracy external clock input, such as a real-time counter.
HIOTRM can be set by an 8-bit memory manipulation instruction.
Reset signal generation sets HIOTRM to 10H.
Caution
If the temperature or V
fluctuate. Also, if a value other than the initial value (10H) is set to the HIOTRM register, the
oscillation accuracy of the internal high-speed oscillation clock may exceed the MIN. and MAX.
values described in CHAPTER 27 ELECTRICAL SPECIFICATIONS (STANDARD PRODUCTS)
due to the subsequent fluctuation in the temperature or V
setting value.
executed either before frequency accuracy will be required or regularly.
If the temperature or V
DD
CHAPTER 5 CLOCK GENERATOR
pin voltage is changed after accuracy correction, the frequency will
User’s Manual U18698EJ1V0UD
DD
voltage fluctuates, accuracy correction must be
DD
voltage, or HIOTRM register