s3c72m9 Samsung Semiconductor, Inc., s3c72m9 Datasheet - Page 205

• Manufacturer Part Number: s3c72m9
• Description: The S3c72m5/s3c72m7/s3c72m9 Single-chip Cmos Microcontroller Has Been Designed For High Performance Using Samsung S
• Manufacturer: Samsung Semiconductor, Inc.

S3C72M5/C72M7/C72M9/P72M9 (Preliminary Spec)
INSTRUCTION CYCLE TIMES
The unit of time that equals one machine cycle varies depending on whether the main system clock (fx) or a
subsystem clock (fxt) is used, and on how the oscillator clock signal is divided (by 4, 8, or 64). Table 6-2 shows
corresponding cycle times in microseconds.
CPU Clock
Selected
fx/64
fxt/4
fx/8
fx/4
Table 6-2. Instruction Cycle Times for CPU Clock Rates
Resulting Frequency
524.0 kHz
1.05 MHz
65.5 kHz
8.19 kHz
fxt = 32.768 kHz
fx = 4.19 MHz
Oscillation
Source
Cycle Time (µsec)
122.0
15.3
1.91
0.95
OSCILLATOR CIRCUITS
6-5