8 CLOCK GENERATOR (CLG)
S1C17001 TECHNICAL MANUAL
EPSON
71
8. Clock Generator (CLG)
8.1 Clock Generator Configuration
The clock generator controls the system clock feed to the S1C17 core and peripheral modules.
Figure 8.1.1 illustrates the clock system and CLG module configuration.
OSC3
CCLK
OSC1
OSC1
FOUT3
output circuit
OSC3
oscillator circuit
(8.2 MHz)
OSC1
oscillator circuit
(32.768 kHz)
Wait circuit for
wakeup
Clock gear
(1/1 to 1/8)
Gate
S1C17 core
BCLK
Internal bus, RAM,
ROM
ITC, T16, T8F, UART,
SPI, I2C, T16E, P,
MISC, REMC,
Control register (CT,
SWT, WDT, T8OSC1)
PCLK
CLK_256Hz
OSC3
OSC4
FOUT3
FOUT1
output circuit
FOUT1
Noise filter
RESET
OSC1
OSC2
SLEEP, on/off control
Gear selection
wakeup
HALT
On/off control
S1C17 core
S1C17 core
Division ratio selection
On/off control
On/off control
On/off control
SLEEP, on/off control
Noise filter
NMI
On/off control
Division
circuit
CT, SWT, WDT
T8OSC1
Gate
Gate
On/off control
On/off control
Gate
CLG
PSC
OSC
T8F, T16, T16E,
REMC, P, UART, SPI,
I2C
Gate
HALT
Clock source
selection
System
clock
Division circuit
(1/1 to 1/4)
Division ratio
selection
(1/1 to 1/32)
(1/128)
Division circuit
(1/1 to 1/16K)
Figure 8.1.1: CLG module configuration
To reduce power consumption, control the clock in conjunction with processing and use standby mode. For more
information on reducing power consumption, refer to “Appendix B: Power Saving.”
Summary of Contents for S1C17001
Page 1: ...Technical Manual S1C17001 CMOS 16 BIT SINGLE CHIP MICROCONTROLLER ...
Page 33: ...4 POWER SUPPLY VOLTAGE 24 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 63: ...6 INITERRUPT CONTROLLER 54 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 87: ...8 CLOCK GENERATOR CLG 78 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 91: ...9 PRESCALER PSC 82 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 133: ...11 16 BIT TIMER T16 124 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 211: ...16 STOPWATCH TIMER SWT 202 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 219: ...17 WATCHDOG TIMER WDT 210 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 241: ...18 UART 232 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 277: ...20 I2 C 268 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 313: ...25 PACKAGE 304 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...