Obsolete
Product(s)
- Obsolete
Product(s)
Electrical characteristics
ST72324B-Auto
12.5
Supply current characteristics
The following current consumption specified for the ST7 functional operating modes over
temperature range does not take into account the clock source current consumption. To
obtain the total device consumption, the two current values must be added (except for Halt
mode for which the clock is stopped).
12.5.1
ROM current consumption
Table 89.
ROM current consumption
Symbol
Parameter
Conditions
32K ROM
devices
16K/8K ROM
devices
Unit
Typ
Max(1)
Typ
IDD
Supply current in Run mode(2)
fOSC = 2 MHz, fCPU =1MHz
fOSC = 4 MHz, fCPU =2MHz
fOSC = 8 MHz, fCPU =4MHz
fOSC =16MHz, fCPU =8MHz
0.55
1.10
2.20
4.38
0.87
1.75
3.5
7.0
0.46
0.93
1.9
3.7
0.69
1.4
2.7
5.5
mA
fOSC = 2 MHz, fCPU =62.5kHz
fOSC = 4 MHz, fCPU = 125 kHz
fOSC = 8 MHz, fCPU = 250 kHz
fOSC =16MHz, fCPU = 500 kHz
53
100
194
380
87
175
350
700
30
70
150
310
60
120
250
500
A
Supply current in Wait mode
(2)fOSC = 2 MHz, fCPU =1MHz
fOSC = 4 MHz, fCPU =2MHz
fOSC = 8 MHz, fCPU =4MHz
fOSC =16MHz, fCPU =8MHz
0.31
0.61
1.22
2.44
0.5
1.0
2.0
4.0
0.22
0.45
0.91
1.82
0.37
0.75
1.5
3
mA
Supply current in Slow Wait
fOSC = 2 MHz, fCPU =62.5kHz
fOSC = 4 MHz, fCPU = 125 kHz
fOSC = 8 MHz, fCPU = 250 kHz
fOSC =16MHz, fCPU = 500 kHz
36
69
133
260
63
125
250
500
20
40
90
190
40
90
180
350
A
Supply current in Halt mode(3)
-40°C < TA < +85°C
<1
10
<1
10
-40°C < TA < +125°C
<1
50
<1
50
Supply current in Active Halt
mode(4)
fOSC =2MHz
fOSC =4MHz
fOSC =8MHz
fOSC =16MHz
15
28
55
107
20
38
75
200
11
22
43
85
15
30
60
150
1.
Data based on characterization results, tested in production at VDD max. and fCPU max.
2.
Measurements are done in the following conditions:
- Program executed from RAM, CPU running with RAM access. The increase in consumption when executing from Flash is
50%.
- All I/O pins in input mode with a static value at VDD or VSS (no load)
- All peripherals in reset state
- LVD disabled.
- Clock input (OSC1) driven by external square wave
- In Slow and Slow Wait modes, fCPU is based on fOSC divided by 32
To obtain the total current consumption of the device, add the clock source
(Section 12.6.3) and the peripheral power
3.
All I/O pins in push-pull 0 mode (when applicable) with a static value at VDD or VSS (no load), LVD disabled. Data based on
characterization results, tested in production at VDD max. and fCPU max.
4.
Data based on characterization results, not tested in production. All I/O pins in push-pull 0 mode (when applicable) with a
static value at VDD or VSS (no load); clock input (OSC1) driven by external square wave, LVD disabled. To obtain the total
current consumption of the device, add the clock source consumption
(Section 12.6.3).