7 PRESCALER (PSC)
7-2
Seiko Epson Corporation
S1C33L26 TECHNICAL MANUAL
D1
PRUND: Prescaler Run/Stop in Debug Mode Bit
Selects prescaler operations in debug mode.
1 (R/W): Run
0 (R/W): Stop (default)
Setting PRUND to 1 operates PSC Ch.0 and PSC Ch.1 even in debug mode. Setting it to 0 stops PSC
Ch.0 and PSC Ch.1 when the C33 PE Core enters debug mode. Set PRUND to 1 to use the modules
listed below during debugging.
D0
PRUN: Prescaler Run/Stop Control Bit
Starts or stops the prescaler.
1 (R/W): Start operation
0 (R/W): Stop (default)
Write 1 to PRUN to operate PSC Ch.0 and PSC Ch.1. Write 0 to PRUN to stop PSC Ch.0 and PSC
Ch.1. To reduce current consumption, stop PSC Ch.0 and PSC Ch.1 if the modules listed below are al-
ready stopped.
Modules that use PSC Ch.0 output clocks
• 16-bit PWM timer (T16A5) Ch.0, 1
• 16-bit audio PWM timer (T16P)
• 8-bit programmable timer (T8) Ch.0 (clock source for USI)
• 8-bit programmable timer (T8) Ch.2 (trigger source for A/D converter)
• 8-bit programmable timer (T8) Ch.4
• 8-bit programmable timer (T8) Ch.6
• A/D converter (ADC10)
Modules that use PSC Ch.1 output clocks
• 8-bit programmable timer (T8) Ch.1
• 8-bit programmable timer (T8) Ch.3 (clock source for USIL)
• 8-bit programmable timer (T8) Ch.5
• 8-bit programmable timer (T8) Ch.7
• Remote controller (REMC)
• I/O ports (GPIO)