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5.2.6
Current Consumption Measurement Demonstration
The software can set the S1C17F57 in each mode to measure the current consumed by the S1C17F57.
The S1C17F57 is set in each mode by turning on the power soppy while holding down each switch, as shown in
the following table.
When measuring the current, insert an ammeter between both sides of the jumper switch (JP2) on the CPU board.
Table 5.3 Setting list for current consumption measurement mode
Setting method
Press the reset key
while holding down the
SW3.
Press the reset key
while holding down the
SW4.
Press the reset key
while holding down the
SW3 and SW4.
Press the reset key
while holding down the
SW5.
Press the reset key
while holding down the
SW3 and SW5.
Press the reset key
while holding down the
SW4 and SW5.
Press the reset key
while holding down the
SW3, SW4 and SW5.
Press the reset key
while holding down the
SW6.
Press the reset key
while holding down the
SW3 and SW6.
Press the reset key
while holding down the
SW4 and SW6.
Press the reset key
while holding down the
SW3, SW4 and SW6.
Press the reset key
while holding down the
SW5 and SW6.
Press the reset key
while holding down the
SW3, SW5 and SW6.
*1 4MHz
*2 2MHz
*3 TCLK:256Hz(OSC1/256), Doubler=On, DCLK=32768Hz(OSC1/1),
Booster=On, BCLK=16384Hz(OSC1/2), VEPD=15V, VE1=1.76V
S5U1C17F57T Manual
(Rev.1.1)
CPU
operation
OSCA1
OSCB1
Sleep
On
On
Halt
On
-
On
On
On
On
run
On
(NOP)
On
On
On
On
Seiko Epson Corporation
5. Sample Software Manipulation
Operation of each peripheral circuit
* 1
OSC3A
OSC3B
-
Off
Off
-
Off
Off
-
Off
Off
On
Off
Off
-
Off
Off
-
Off
Off
-
On
Off
-
Off
On
-
Off
Off
-
On
Off
-
Off
On
-
Off
Off
-
Off
Off
* 2
RTC
PCLK
HVLD
Off
On
On
On
Off
Off
Off
Off
On
Off
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
Off
On
EPD
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
On
Off
* 3
Off
On
25
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