STM8AF6346ITD datasheet(54/95 Pages) STMICROELECTRONICS

54 / 95 page

Electrical characteristics

STM8AF6366

54/95

DS12343 Rev 2

10.3.1

VCAP external capacitor

Stabilization for the main regulator is achieved connecting an external capacitor CEXT to the

VCAP pin. CEXT is specified in Table 21. Care should be taken to limit the series inductance

to less than 15 nH.

Figure 9. External capacitor CEXT

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

10.3.2

Supply current characteristics

The current consumption is measured as described in Figure 6 on page 49 and Figure 7 on

page 50.

If not explicitly stated, general conditions of temperature and voltage apply.

MSv36488V1

ESR

RLeak

ESL

Table 23. Total current consumption in Run, Wait and Slow mode.

General conditions for VDD apply, TA = −40 to 150 °C

Symbol

Parameter

Conditions

Typ

Max

Unit

IDD(RUN)(1)

1. The current due to I/O utilization is not taken into account in these values.

Supply

current in

Run mode

All peripherals

clocked, code

executed from Flash

program memory,

HSE external clock

(without resonator)

fCPU = 16 MHz

7.5

14.1

fCPU = 8 MHz

4.1

7.5(2)

2. Guaranteed by design.

fCPU = 4 MHz

2.5

4.2(2)

fCPU = 2 MHz

1.6

2.6

IDD(RUN)(1)

Supply

current in

Run mode

All peripherals

clocked, code

executed from RAM

and EEPROM, HSE

external clock

(without resonator)

fCPU = 16 MHz

3.8

5.1

fCPU = 8 MHz

2.3

3.1(2)

fCPU = 4 MHz

1.5

2.1(2)

fCPU = 2 MHz

1.1

1.6

IDD(WFI)(1)

Supply

current in

Wait mode

CPU stopped, all

peripherals off, HSE

external clock

fCPU = 16 MHz

1.75

2.6

fCPU = 8 MHz

1.25

2.0(2)

fCPU = 4 MHz

1.0

1.7(2)

fCPU = 2 MHz

0.9

1.6

IDD(SLOW)(1)

Supply

current in

Slow mode

fCPU scaled down,

all peripherals off,

code executed from

RAM

Ext. clock 16 MHz

fCPU = 125 kHz

1.6

2.05

LSI internal RC

fCPU = 128 kHz

1.6

1.7(2)

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