UPD78F0138HGK-9ET-A Renesas Electronics America, UPD78F0138HGK-9ET-A Datasheet - Page 112

• Manufacturer Part Number: UPD78F0138HGK-9ET-A
• Description: MCU 8BIT 60K FLASH 64TQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx1+r

Specifications of UPD78F0138HGK-9ET-A

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: 3-Wire SIO, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 42
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

110
5.1 Functions of Clock Generator
5.2 Configuration of Clock Generator
The clock generator generates the clock to be supplied to the CPU and peripheral hardware.
The following three system clock oscillators are available.
Remarks 1. f
The clock generator includes the following hardware.
Control registers
Oscillators
High-speed system clock oscillator
The high-speed system clock oscillator oscillates a clock of f
by executing the STOP instruction or setting the main OSC control register (MOC) and processor clock control
register (PCC).
Internal oscillator
The Internal oscillator oscillates a clock of f
internal oscillation mode register (RCM) when “Can be stopped by software” is set by the option byte and the
high-speed system clock is used as the CPU clock.
Subsystem clock oscillator
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.
2. f
3. f
Item
XP
R
XT
:
: Subsystem clock oscillation frequency
: High-speed system clock oscillation frequency
Internal oscillation clock oscillation frequency
Processor clock control register (PCC)
Internal oscillation 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)
High-speed system clock oscillator
Internal oscillator
Subsystem clock oscillator
Table 5-1. Configuration of Clock Generator
CHAPTER 5 CLOCK GENERATOR
User’s Manual U16899EJ3V0UD
R
= 240 kHz (TYP.). Oscillation can be stopped by setting the
XT
= 32.768 kHz. Oscillation cannot be stopped. When
Configuration
XP
= 2.0 to 16.0 MHz. Oscillation can be stopped