STM8S103F2 datasheet(55/121 Pages) STMICROELECTRONICS

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STM8S103F2 STM8S103F3 STM8S103K3

Electrical characteristics

10.3.1

VCAP external capacitor

The stabilization for the main regulator is achieved by connecting an external capacitor

CEXT to the VCAP pin. CEXT is specified in Table 19. Care should be taken to limit the series

inductance to less than 15 nH.

Figure 11. External capacitor CEXT

1. ESR is the equivalent series resistance and ESL is the equivalent inductance.

10.3.2

Supply current characteristics

The current consumption is measured as illustrated in Figure 9: Pin input voltage.

Total supply 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 VDD or VSS (no load)

•

All peripherals are disabled (clock stopped by peripheral clock gating registers) except

if explicitly mentioned.

Subject to general operating conditions for VDD and TA.

Table 21. Total current consumption with code execution in run mode at VDD = 5 V

Symbol

Parameter

Conditions

Typ

Max(1)

Unit

IDD(RUN)

Supply

current in

Run mode,

code

executed

from RAM

fCPU = fMASTER = 16 MHz

HSE crystal osc. (16 MHz)

2.3

HSE user ext. clock

(16 MHz)

22.35

HSI RC osc. (16 MHz)

1.7

fCPU = fMASTER /128 = 125 kHz

HSE user ext. clock

(16 MHz)

0.86

HSI RC osc. (16 MHz)

0.7

0.87

fCPU = fMASTER /128 =

15.625 kHz

HSI RC osc. (16 MHz/8)

0.46

0.58

fCPU = fMASTER = 128 kHz

LSI RC osc. (128 kHz)

0.41

0.55

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