Datasheet

ST72334J/N, ST72314J/N, ST72124J
113/153
16.4 SUPPLY CURRENT CHARACTERISTICS
The following current consumption specified for
the ST7 functional operating modes over tempera-
ture range does not take into account the clock
source current consumption. To get the total de-
vice consumption, the two current values must be
added (except for HALT mode for which the clock
is stopped).
16.4.1 RUN and SLOW Modes
Figure 63. Typical I
DD
in RUN vs. f
CPU
Figure 64. Typical I
DD
in SLOW vs. f
CPU
Notes:
1. Typical data are based on T
A
=25°C, V
DD
=5V (4.5V≤V
DD
≤5.5V range) and V
DD
=3.4V (3.2V≤V
DD
≤3.6V range).
2. Data based on characterization results, tested in production at V
DD
max. and f
CPU
max.
3. CPU running with memory access, all I/O pins in input mode with a static value at V
DD
or V
SS
(no load), all peripherals
in reset state; clock input (OSC1) driven by external square wave, CSS and LVD disabled.
4. SLOW mode selected with f
CPU
based on f
OSC
divided by 32. All I/O pins in input mode with a static value at V
DD
or
V
SS
(no load), all peripherals in reset state; clock input (OSC1) driven by external square wave, CSS and LVD disabled.
Symbol Parameter Conditions Max Unit
∆I
DD(∆Ta)
Supply current variation vs. temperature Constant V
DD
and f
CPU
10 %
Symbol Parameter Conditions Typ
1)
Max
2)
Unit
I
DD
Supply current in RUN mode
3)
(see Figure 63)
4.5V≤V
DD
≤5.5V
f
OSC
=2MHz, f
CPU
=1MHz
f
OSC
=4MHz, f
CPU
=2MHz
f
OSC
=8MHz, f
CPU
=4MHz
f
OSC
=16MHz, f
CPU
=8MHz
1.2
2.1
3.9
7.4
1.8
3.5
7.0
14.0
mA
Supply current in SLOW mode
4)
(see Figure 64)
f
OSC
=2MHz, f
CPU
=62.5kHz
f
OSC
=4MHz, f
CPU
=125kHz
f
OSC
=8MHz, f
CPU
=250kHz
f
OSC
=16MHz, f
CPU
=500kHz
0.4
0.5
0.7
1.0
0.9
1.1
1.4
2.0
Supply current in RUN mode
3)
(see Figure 63)
3.2V≤V
DD
≤3.6V
f
OSC
=2MHz, f
CPU
=1MHz
f
OSC
=4MHz, f
CPU
=2MHz
f
OSC
=8MHz, f
CPU
=4MHz
f
OSC
=16MHz, f
CPU
=8MHz
0.3
0.8
1.6
3.5
1
1.5
3
7
Supply current in SLOW mode
4)
(see Figure 64)
f
OSC
=2MHz, f
CPU
=62.5kHz
f
OSC
=4MHz, f
CPU
=125kHz
f
OSC
=8MHz, f
CPU
=250kHz
f
OSC
=16MHz, f
CPU
=500kHz
0.1
0.2
0.3
0.5
0.3
0.5
0.6
1.0
3.2 3.5 4 4.5 5 5.5
VDD [V]
0
1
2
3
4
5
6
7
8
IDD [mA]
8MHz
4MHz
2MHz
1MHz
3.2 3.5 4 4.5 5 5.5
VDD [V]
0
0.2
0.4
0.6
0.8
1
1.2
IDD [mA]
500kHz
250kHz
125kHz
62.5kHz