User’s Manual U12688EJ4V0UM00
231
CHAPTER 8 CLOCK GENERATOR FUNCTIONS
The clock generator (CG) generates and controls the internal system clock (
φ
) which is supplied to each internal
unit, of which the CPU is the primary unit.
8.1
Features
{
Multiplier function using a PLL (phase locked loop) synthesizer
{
Clock Source
•
Oscillation by connecting an oscillator: f
XX
=
φ
/5
•
External clock: f
XX
= 2
×
φ
,
φ
/5
{
Power save control
•
HALT mode
•
IDLE mode
•
Software STOP mode
•
Clock output inhibit function
{
Internal system clock output function
8.2
Configuration
X1
X2
Clock
generator
(CG)
φ
CKSEL
(f
XX
)
CPU, Internal peripheral I/O
Time base counter (TBC)
CLKOUT
Remark
φ
:
Internal system clock frequency
f
XX
: External resonator or external clock frequency
Содержание V850E/MS1 UPD703100
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