SIC63616-(Rev. 1.0) NO. P173
3240-0412
Chapter
5 s
uMMary
of
n
otes
5.1 Notes for Low Current Consumption
The S1C63616 contains control registers for each of the circuits so that current consumption can be reduced.
These control registers reduce the current consumption through programs that operate the circuits at the
minimum levels.
The following lists the circuits that can control operation and their control registers. Refer to these when
programming.
Table 5.1.1 Circuits and control registers
Circuit (and item)
CPU
CPU operating frequency
Power supply voltage booster/halver
LCD system voltage regulator
SVD circuit
Control register
HALT and SLP instructions
CLKCHG, OSCC
DBON, HLON
LPWR
SVDON
Refer to Chapter 7, "Electrical Characteristics" for current consumption.
Below are the circuit statuses at initial reset.
CPU
: Operating status
CPU operating frequency
: Low speed side (CLKCHG = "0")
OSC3 oscillation circuit is in off status (OSCC = "0")
Power supply voltage booster/halver
: Off status (DBON = "0", HLON = "0")
LCD system voltage regulator
: Off status (LPWR = "0")
SVD circuit
: Off status (SVDON = "0")
Also, be careful about panel selection because the current consumption can differ by the order of several µA
on account of the LCD panel characteristics.
Содержание S1C63616
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