ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto
15.4 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).
Symbol
Parameter
∆IDD(∆Ta) Supply current variation vs. temperature
Conditions
Constant VDD and fCPU
Max Unit
10
%
15.4.1 Run and Slow Modes
Symbol
Parameter
Supply current in Run mode 3)
(see Figure 62)
Supply current in Slow mode 4)
(see Figure 63)
IDD
Supply current in Run mode 3)
(see Figure 62)
Supply current in Slow mode 4)
(see Figure 63)
Conditions
fOSC=2MHz, fCPU=1MHz
fOSC=4MHz, fCPU=2MHz
fOSC=8MHz, fCPU=4MHz
fOSC=16MHz, fCPU=8MHz
fOSC=2MHz, fCPU=62.5kHz
fOSC=4MHz, fCPU=125kHz
fOSC=8MHz, fCPU=250kHz
fOSC=16MHz, fCPU=500kHz
fOSC=2MHz, fCPU=1MHz
fOSC=4MHz, fCPU=2MHz
fOSC=8MHz, fCPU=4MHz
fOSC=16MHz, fCPU=8MHz
fOSC=2MHz, fCPU=62.5kHz
fOSC=4MHz, fCPU=125kHz
fOSC=8MHz, fCPU=250kHz
fOSC=16MHz, fCPU=500kHz
Typ 1) Max 2) Unit
1.2
1.8
2.1
3.5
3.9
7.0
7.4 14.0
0.4
0.9
0.5
1.1
0.7
1.4
1.0
2.0
mA
0.3
1
0.8
1.5
1.6
3
3.5
7
0.1
0.3
0.2
0.5
0.3
0.6
0.5
1.0
Figure 62. Typical IDD in RUN vs. fCPU
Figure 63. Typical IDD in SLOW vs. fCPU
IDD [mA]
8
7
6
8MHz
4MHz
5
2MHz
1MHz
IDD [mA]
1.2
1
0.8
500kHz
250kHz
125kHz
62.5kHz
4
0.6
3
0.4
2
0.2
1
0
3.2
3.5
4
4.5
5
5.5
0
3.2 3.5
4
4.5
5
5.5
VDD [V]
VDD [V]
Notes:
1. Typical data is based on TA=25°C, VDD=5V (4.5V≤VDD≤5.5V range) and VDD=3.4V (3.2V≤VDD≤3.6V range).
2. Data based on characterization results, tested in production at VDD max. and fCPU max.
3. CPU running with memory access, all I/O pins in input mode with a static value at VDD or VSS (no load), all peripherals
in reset state; clock input (OSC1) driven by external square wave, CSS and LVD disabled.
4. Slow mode selected with fCPU based on fOSC divided by 32. All I/O pins in input mode with a static value at VDD or VSS
(no load), all peripherals in reset state; clock input (OSC1) driven by external square wave, CSS and LVD disabled.
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