US38024-BAG1 Renesas Electronics America, US38024-BAG1 Datasheet - Page 139

• Manufacturer Part Number: US38024-BAG1
• Description: DEV EVALUATION KIT H8/38024
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of US38024-BAG1

• Contents: 2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
• For Use With/related Products: H8/38024
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1. Oscillation stabilization time (t
The time from the point at which the system clock oscillator oscillation waveform starts to change
when an interrupt is generated, until the amplitude of the oscillation waveform increases and the
oscillation frequency stabilizes.
2. Wait time
The time required for the CPU and peripheral functions to begin operating after the oscillation
waveform frequency and system clock have stabilized.
The wait time setting is selected with standby timer select bits 2 to 0 (STS2 to STS0) (bits 6 to 4 in
system control register 1 (SYSCR1)).
When standby mode, watch mode, or subactive mode is cleared by an interrupt or reset, and a
transition is made to active (high-speed/medium-speed) mode, the oscillation waveform begins to
change at the point at which the interrupt is accepted. Therefore, when an oscillator element is
connected in standby mode, watch mode, or subactive mode, since the system clock oscillator is
halted, the time from the point at which this oscillation waveform starts to change until the
Operating
mode
Oscillation
waveform
(OSC2)
System clock
(φ)
Oscillation
stabilization
time
Standby mode,
watch mode,
or subactive
mode
Figure 4.14 Oscillation Stabilization Wait Time
Interrupt accepted
Oscillation stabilization wait time
rc
)
Wait time
Rev. 8.00 Mar. 09, 2010 Page 117 of 658
Section 4 Clock Pulse Generators
Active (high-speed) mode or
active (medium-speed) mode
REJ09B0042-0800