9 PRESCALER (PSC)
80
EPSON
S1C17001 TECHNICAL MANUAL
9.2 Control Register Details
Table 9.2.1: Prescaler register
Address
Register name
Function
0x4020
PSC_CTL
Prescaler Control Register
Prescaler start/stop control
The prescaler register is an 8-bit register.
Note: When data is written to the registers, the “Reserved” bits must always be written as 0 and not 1.
0x4020: Prescaler Control Register (PSC_CTL)
Register name Address
Bit
Name
Function
Setting
Init. R/W
Remarks
Prescaler Con-
trol Register
(PSC_CTL)
0x4020
(8 bits)
D7–2
–
reserved
–
–
–
0 when being read.
D1
PRUND
Prescaler run/stop in debug mode 1 Run
0 Stop
0
R/W
D0
PRUN
Prescaler run/stop control
1 Run
0 Stop
0
R/W
D[7:2] Reserved
D1
PRUND: Prescaler Run/Stop Setting Bit for Debug Mode
Selects prescaler operations in Debug mode.
1 (R/W): Operate
0 (R/W): Stop (default)
Setting PRUND to 1 operates the prescaler even in Debug mode. Setting it to 0 stops the prescaler once
the S1C17 core switches to Debug mode. Set PRUND to 1 to use the timer and interface module during
debugging.
D0
PRUN: Prescaler Run/Stop Control Bit
Starts or stops prescaler operation.
1 (R/W): Start operation
0 (R/W): Stop (default)
Write 1 to PRUN to operate the prescaler. Write 0 to PRUN to stop the prescaler. To reduce current con-
sumption, stop the prescaler if the timer and interface module are already stopped.
Содержание S1C17001
Страница 1: ...Technical Manual S1C17001 CMOS 16 BIT SINGLE CHIP MICROCONTROLLER ...
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Страница 33: ...4 POWER SUPPLY VOLTAGE 24 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
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Страница 87: ...8 CLOCK GENERATOR CLG 78 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 91: ...9 PRESCALER PSC 82 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
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Страница 185: ...14 8 BIT OSC1 TIMER T8OSC1 176 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Страница 211: ...16 STOPWATCH TIMER SWT 202 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
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