21 ELECTRICAL CHARACTERISTICS
21-2
Seiko Epson Corporation
S1C17M20/M21/M22/M23/M24/M25
TECHNICAL MANUAL (Rev. 1.0)
21.3 Current Consumption
Unless otherwise specified: V
DD
= 1.8 to 5.5 V, V
SS
= 0 V, Ta = 25
°
C, EXOSC = OFF, PWGVD1CTL.REGMOD[1:0] bits = 0x0 (automatic
mode), FLASHCWAIT.RDWAIT[1:0] bits = 0x1 (2 cycles)
Item
Symbol
Condition
Ta
Min.
Typ.
Max. Unit
Current
consumption in
SLEEP mode
I
SLP
IOSC = OFF, OSC1 = OFF, OSC3 = OFF
25
°
C
–
0.36
2
µA
85
°
C
–
1.6
10
µA
Current
consumption in
HALT mode
I
HALT1
IOSC = ON, OSC1 = 32.768 kHz
*
1
, OSC3 = OFF
–
40
60
µA
I
HALT2
IOSC = OFF, OSC1 = 32.768 kHz
*
1
, OSC3 = OFF
–
0.7
1.8
µA
IOSC = OFF, OSC1 = 32 kHz
*
2
, OSC3 = OFF
–
1.5
6.5
µA
I
HALT3
IOSC = OFF, OSC1 = 32.768 kHz
*
1
, OSC3 = 1 MHz (ceramic oscillator)
*
3
–
40
60
µA
IOSC = OFF, OSC1 = 32.768 kHz
*
1
, OSC3 = 12 MHz (internal oscillator)
*
4
410
710
µA
Current
consumption in
RUN mode
I
RUN1
*5
IOSC = ON, OSC1 = 32.768 kHz
*
1
, OSC3 = OFF, SYSCLK = IOSC
–
120
200
µA
IOSC = ON, OSC1 = 32.768 kHz
*
1
, OSC3 = OFF, SYSCLK = IOSC
FLASHCWAIT.RDWAIT[1:0] bits = 0x0 (1 cycle)
–
145
300
µA
I
RUN2
*
5
IOSC = OFF, OSC1 = 32.768 kHz
*
1
, OSC3 = OFF, SYSCLK = OSC1
–
5
9
µA
IOSC = OFF, OSC1 = 32 kHz
*
2
, OSC3 = OFF, SYSCLK = OSC1
5.5
12
µA
I
RUN3
*
5
IOSC = OFF, OSC1 = 32.768 kHz
*
1
, OSC3 = 1 MHz (ceramic oscillator)
*
3
,
SYSCLK = OSC3
–
160
320
µA
IOSC = OFF, OSC1 = 32.768 kHz
*
1
, OSC3 = 12 MHz (internal oscillator)
*
4
,
SYSCLK = OSC3
–
1,800 2,800
µA
*
1 OSC1 oscillator: CLGOSC1.OSC1SELCR bit = 0, CLGOSC1.INV1N[1:0] bits = 0x0, CLGOSC1.CGI1[2:0] bits = 0x0, CLGOSC1.
OSDEN bit = 0, C
G1
= C
D1
= 0 pF, Crystal resonator = C-002RX (manufactured by Seiko Epson Corporation, R
1
= 50 k
W
(Max.),
C
L
= 7 pF)
*
2 OSC1 oscillator: CLGOSC1.OSC1SELCR bit = 1
*
3 OSC3 oscillator: CLGOSC3.OSC3MD bit = 1, CLGOSC3.OSC3INV[1:0] bits = 0x0, C
G3
= C
D3
= 100 pF, ceramic resonator = CS-
BLA_J (manufactured by Murata Manufacturing Co., Ltd., 1 MHz)
*
4 OSC3 oscillator: CLGOSC3.OSC3MD bit = 0, CLGOSC3.OSC3FQ[1:0] bits = 0x0
*
5 The current consumption values were measured when a test program consisting of 60.5% ALU instructions, 17% branch instruc-
tions, 12% RAM read instructions, and 10.5% RAM write instructions was executed continuously in the Flash memory.
Current consumption-temperature characteristic
Current consumption-temperature characteristic
in SLEEP mode
in HALT mode (IOSC operation)
IOSC = OFF, OSC1 = OFF, OSC3 = OFF, V
DD
= 5.5 V, Typ. value IOSC = ON, OSC1 = 32.768 kHz, OSC3 = OFF, Typ. value
-50
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
-25
0
25
50
75
100
Ta [
°
C]
I
SLP
[
µ
A]
-50
60
50
40
30
20
10
0
-25
0
25
50
75
100
Ta [
°
C]
I
HAL
T1
[
µ
A]