UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 178

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

5.3 Registers Controlling Clock Generator
176
Remark f
The following seven registers are used to control the clock generator.
Processor clock control register (PCC)
Internal oscillator mode register (RCM)
Main clock mode register (MCM)
Main OSC control register (MOC)
Clock operation mode select register (OSCCTL)
Oscillation stabilization time counter status register (OSTC)
Oscillation stabilization time select register (OSTS)
f
f
f
f
f
f
f
f
f
f
X
OSC8
EXT
IN
MAIN
PRS
CPU
XT
EXTS
SUB
OSC
:
:
:
:
:
:
:
:
:
:
:
X1 clock oscillation frequency
Internal high-speed oscillation clock frequency
External main system clock frequency
High-speed system clock oscillation frequency
Main system clock oscillation frequency
Peripheral hardware clock frequency
CPU clock oscillation frequency
XT1 clock oscillation frequency
External subsystem clock frequency
Subsystem clock frequency
Internal low-speed oscillation clock frequency
Preliminary User’s Manual U19748EJ1V0UD
CHAPTER 5 CLOCK GENERATOR