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7.5 Power Current Consumption
Unless otherwise specified: V
crystal oscillation, C
= 25 pF, OSC3 = crystal/ceramic oscillation, Non heavy load protection mode, C
G
Item
Power current
(Normal mode)
Power current
(Low power mode)
Power current
(High speed mode)
LCD drive circuit current
SVD circuit current
OSC1 CR oscillation current
*1
OSC1: Stop,
*2
OSC1: Oscillating,
*3
OSC1: Oscillating,
*4
OSC1: Oscillating,
See "7.8 Characteristics Curves" for current consumption with an operating frequency other than 4 MHz.
*5
OSC1: Oscillating,
See "7.8 Characteristics Curves" for current consumption with an operating frequency other than 8 MHz.
1
The LCD drive circuit current varies according to the display patterns.
Note)
2
It is the value of current which flows in the heavy load protection circuit when in the heavy load protection mode
(OSC3 ON or buzzer ON).
3
The value in x V can be found by the following expression: I
= x V) = (x × 30) - 30 (Max. value)
I
(V
SVDN
DD
4
When OSC1 CR oscillation circuit is selected by the mask option.
E0C88832/88862 TECHNICAL MANUAL
= Within the operating voltage in each operating mode, V
DD
Symbol
I
In SLEEP status
DD1
I
In HALT status
DD2
I
CPU is in operating (32.768 kHz)
DD3
I
CPU is in operating (4 MHz)
DD4
I
In SLEEP status
DD1
I
In HALT status
DD2
I
CPU is in operating (32.768 kHz)
DD3
I
In SLEEP status
DD1
I
In HALT status
DD2
I
CPU is in operating (32.768 kHz)
DD3
I
CPU is in operating (8 MHz)
DD4
I
LCDN
I
In heavy load protection mode
LCDH
I
V
= 3.0 V
SVDN
DD
I
R
= 800 kΩ
CR1
CR1
OSC3 = Stop,
CPU, ROM, RAM: SLEEP status,
OSC3 = Stop,
CPU, ROM, RAM: HALT status,
OSC3 = Stop,
CPU, ROM, RAM: Operating in 32.768 kHz,
OSC3 = Oscillating,
CPU, ROM, RAM: Operating in 4 MHz,
OSC3 = Oscillating,
CPU, ROM, RAM: Operating in 8 MHz,
7 ELECTRICAL CHARACTERISTICS
SS
Condition
Min.
*1
*2
*3
*4
*1
*2
*3
*1
*2
*3
*5
= x V) = (x × 20) - 30 (Typ. value),
(V
SVDN
DD
EPSON
= 0 V, Ta = 25°C, OSC1 = 32.768 kHz
= 0.1 µF, No panel load
–C
1
10
Typ.
Max.
Unit
0.3
1
1.5
4
9
15
1.1
1.5
0.2
1
1
3
5
8
1
3
2
6
13
22
3.7
4.9
2.5
5
23
30
30
60
3
20
Clock timer: Stop,
Others: Stop status
Clock timer: Operating,
Others: Stop status
Clock timer: Operating,
Others: Stop status
Clock timer: Operating,
Others: Stop status
Clock timer: Operating,
Others: Stop status
Note
µA
µA
µA
mA
µA
µA
µA
µA
µA
µA
mA
µA
1
µA
2
µA
3
µA
4
127
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