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136 EPSON S1C88650 TECHNICAL MANUAL
6 SUMMARY OF NOTES
6 SUMMARY OF NOTES
6.1 Notes for Low Current
Consumption
The S1C88650 can turn circuits, which consume a
large amount of power, ON or OFF by control
registers.
You can reduce power consumption by creating a
program that operates the minimum necessary
circuits using these control registers.
Next, which circuit systems' operation can be
controlled and their control registers (instructions)
are explained. You should refer to these when
programming.
See Chapter 8, "ELECTRICAL CHARACTERIS-
TICS" for the current consumption.
Refer to "Programming notes" in each peripheral
section for precautions of each peripheral circuit.
Table 6.1.1 Circuit systems and control registers
Circuit type
CPU
Oscillation circuit
Power voltage booster
LCD controller
SVD circuit
Heavy lord protection
Status at time of initial resetting
Operation status
OSC3 clock (CLKCHG = "1")
OSC3 oscillation ON (SOSC3 = "1")
OFF status (DBON = "0")
Drive OFF (LCDC0 = LCDC1 = "0")
OFF status (SVDON = "0")
OFF status (HLMOD = "0")
Control register (Instruction)
HALT and SLP instructions
CLKCHG, SOSC3
DBON
LCDC0, LCDC1
SVDON
HLMOD