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5 POWER-DOWN CONTROL
A-64 EPSON S1C33210 PRODUCT PART
Function Control bit "1" "0" Default
Prescaler ON/OFF PSCON(D5)/Power control register(0x40180) ON OFF ON
16-bit timer 0 clock control P16TON0(D3)/16-bit timer 0 clock control register(0x40147) ON OFF OFF
16-bit timer 0 Run/Stop PRUN0(D0)/16-bit timer 0 control register(0x48186) RUN STOP STOP
16-bit timer 1 clock control P16TON1(D3)/16-bit timer 1 clock control register(0x40148) ON OFF OFF
16-bit timer 1 Run/Stop PRUN1(D0)/16-bit timer 1 control register(0x4818E) RUN STOP STOP
16-bit timer 2 clock control P16TON2(D3)/16-bit timer 2 clock control register(0x40149) ON OFF OFF
16-bit timer 2 Run/Stop PRUN2(D0)/16-bit timer 2 control register(0x48196) RUN STOP STOP
16-bit timer 3 clock control P16TON3(D3)/16-bit timer 3 clock control register(0x4014A) ON OFF OFF
16-bit timer 3 Run/Stop PRUN3(D0)/16-bit timer 3 control register(0x4819E) RUN STOP STOP
16-bit timer 4 clock control P16TON4(D3)/16-bit timer 4 clock control register(0x4014B) ON OFF OFF
16-bit timer 4 Run/Stop PRUN4(D0)/16-bit timer 4 control register(0x481A6) RUN STOP STOP
16-bit timer 5 clock control P16TON5(D3)/16-bit timer 5 clock control register(0x4014C) ON OFF OFF
16-bit timer 5 Run/Stop PRUN5(D0)/16-bit timer 5 control register(0x481AE) RUN STOP STOP
8-bit timer 0 clock control P8TON0(D3)/8-bit timer 0/1 clock control register(0x4014D) ON OFF OFF
8-bit timer 0 Run/Stop PTRUN0(D0)/8-bit timer 0 control register(0x40160) RUN STOP STOP
8-bit timer 1 clock control P8TON1(D7)/8-bit timer 0/1 clock control register(0x4014D) ON OFF OFF
8-bit timer 1 Run/Stop PTRUN1(D0)/8-bit timer 1 control register(0x40164) RUN STOP STOP
8-bit timer 2 clock control P8TON2(D3)/8-bit timer 2/3 clock control register(0x4014E) ON OFF OFF
8-bit timer 2 Run/Stop PTRUN2(D0)/8-bit timer 2 control register(0x40168) RUN STOP STOP
8-bit timer 3 clock control P8TON3(D7)/8-bit timer 2/3 clock control register(0x4014E) ON OFF OFF
8-bit timer 3 Run/Stop PTRUN3(D0)/8-bit timer 3 control register(0x4016C) RUN STOP STOP
8-bit timer 4 clock control P8TON4(D3)/8-bit timer 4/5 clock control register(0x40145) ON OFF OFF
8-bit timer 4 Run/Stop PTRUN4(D0)/8-bit timer 4 control register(0x40174) RUN STOP STOP
8-bit timer 5 clock control P8TON5(D7)/8-bit timer 4/5 clock control register(0x40145) ON OFF OFF
8-bit timer 5 Run/Stop PTRUN5(D0)/8-bit timer 5 control register(0x40178) RUN STOP STOP
A/D converter clock control PSONAD(D3)/A/D clock control register(0x4014F) ON OFF OFF
A/D conversion enable ADE(D2)/A/D enable register(0x40244) RUN STOP STOP
The same clock source must be used for the prescaler operating clock and the CPU operating clock. Therefore,
when operating the CPU in low-speed with the OSC1 clock, the prescaler input clock must be switched
according to the CPU operating clock. In this case, in order to prevent a malfunction in the peripheral circuit,
the prescaler should be turned off before switching the CPU operating clock. After the CPU operating clock
has been switched, switch the prescaler operating clock and then turn the prescaler on.
Function Control bit "1" "0" Default
Prescaler operating clock
switch over
PSCDT0 (D0)/Prescaler clock select register(0x40181) OSC1 OSC3/
PLL
OSC3/
PLL