Electrical characteristics
STM8S207xx, STM8S208xx
10.3.2
Supply current characteristics
The current consumption is measured as described in Figure 9 on page 52.
Total current consumption in run mode
The MCU is placed under the following conditions:
●
All I/O pins in input mode with a static value at V or V (no load)
DD SS
●
All peripherals are disabled (clock stopped by Peripheral Clock Gating registers) except
if explicitly mentioned.
●
When the MCU is clocked at 24 MHz, T ≤105 °C and the WAITSTATE option bit is set.
A
Subject to general operating conditions for V and T .
DD
A
Table 20. Total current consumption with code execution in run mode at V = 5 V
DD
Symbol Parameter
Conditions
HSE crystal osc. (24 MHz)
Typ
Max
Unit
4.4
3.7
3.3
2.7
2.5
1.2
1.0
fCPU = fMASTER = 24 MHz,
TA ≤ 105 °C
HSE user ext. clock (24 MHz)
HSE crystal osc. (16 MHz)
HSE user ext. clock (16 MHz)
HSI RC osc. (16 MHz)
7.3(1)
Supply
fCPU = fMASTER = 16 MHz
5.8
3.4
current in
run mode,
code
executed
from RAM
HSE user ext. clock (16 MHz)
HSI RC osc. (16 MHz)
4.1(1)
1.3(1)
fCPU = fMASTER/128 = 125 kHz
fCPU = fMASTER/128 = 15.625
kHz
HSI RC osc. (16 MHz/8)
0.55
f
CPU = fMASTER = 128 kHz
LSI RC osc. (128 kHz)
0.45
11.4
IDD(RUN)
mA
HSE crystal osc. (24 MHz)
fCPU = fMASTER = 24 MHz,
HSE user ext. clock (24 MHz) 10.8
18(1)
TA ≤ 105 °C
HSE crystal osc. (16 MHz)
HSE user ext. clock (16 MHz)
HSI RC osc.(16 MHz)
9.0
Supply
fCPU = fMASTER = 16 MHz
8.2 15.2(1)
8.1 13.2(1)
1.5
current in
run mode,
code
executed
from Flash
fCPU = fMASTER = 2 MHz.
HSI RC osc. (16 MHz/8)(2)
fCPU = fMASTER/128 = 125 kHz
HSI RC osc. (16 MHz)
1.1
fCPU = fMASTER/128 = 15.625
kHz
HSI RC osc. (16 MHz/8)
LSI RC osc. (128 kHz)
0.6
fCPU = fMASTER = 128 kHz
0.55
1. Data based on characterization results, not tested in production.
2. Default clock configuration measured with all peripherals off.
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