ST7MC1K2-Auto datasheet(317/371 Pages) STMICROELECTRONICS

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Electrical characteristics

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12.4

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 get the total device

consumption, the two current values must be added (except for Halt mode for which the clock is stopped).

12.4.1

Run and slow modes (Flash devices)

Figure 132. Typical IDD in RUN vs fCPU

Table 192.

Run and slow modes (Flash devices)

Symbol

Parameter

Conditions

Typ

Max(1)

Unit

IDD

Supply current in Run mode(2)

(see Figure 132)

4.5V < VDD < 5.5V

fOSC = 16 MHz,

fCPU = 8MHz

Supply current in Slow mode(2)

(see Figure 133)

fOSC = 16 MHz,

fCPU = 500 kHz

Data based on characterization results, tested in production at VDD max. and fCPU max.

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 mode, fCPU is based on fOSC divided by 32.

To obtain the total current consumption of the device, add the clock source (Section 12.5.3) and the peripheral power

consumption.

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0

0123

45678

Fcpu Mhz

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