CSTCC10.0MGA datasheet(113/153 Pages) STMICROELECTRONICS

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ST72334J/N, ST72314J/N, ST72124J

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16.4 SUPPLY CURRENT CHARACTERISTICS

The following current consumption specified for

the ST7 functional operating modes over tempera-

ture range does not take into account the clock

source current consumption. To get the total de-

vice consumption, the two current values must be

added (except for HALT mode for which the clock

is stopped).

16.4.1 RUN and SLOW Modes

Figure 63. Typical IDD in RUN vs. fCPU

Figure 64. Typical IDD in SLOW vs. fCPU

Notes:

1. Typical data are based on TA=25°C, VDD=5V (4.5V≤VDD≤5.5V range) and VDD=3.4V (3.2V≤VDD≤3.6V range).

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

3. CPU running with memory access, all I/O pins in input mode with a static value at VDD or VSS (no load), all peripherals

in reset state; clock input (OSC1) driven by external square wave, CSS and LVD disabled.

4. SLOW mode selected with fCPU based on fOSC divided by 32. All I/O pins in input mode with a static value at VDD or

VSS (no load), all peripherals in reset state; clock input (OSC1) driven by external square wave, CSS and LVD disabled.

Symbol

Parameter

Conditions

Max

Unit

∆I

DD(

∆Ta)

Supply current variation vs. temperature

Constant VDD and fCPU

Symbol

Parameter

Conditions

Typ 1)

Max 2)

Unit

IDD

Supply current in RUN mode 3)

(see Figure 63)

fOSC=2MHz, fCPU=1MHz

fOSC=4MHz, fCPU=2MHz

fOSC=8MHz, fCPU=4MHz

fOSC=16MHz, fCPU=8MHz

1.2

2.1

3.9

7.4

1.8

3.5

7.0

14.0

Supply current in SLOW mode 4)

(see Figure 64)

fOSC=2MHz, fCPU=62.5kHz

fOSC=4MHz, fCPU=125kHz

fOSC=8MHz, fCPU=250kHz

fOSC=16MHz, fCPU=500kHz

0.4

0.5

0.7

1.0

0.9

1.1

1.4

2.0

Supply current in RUN mode 3)

(see Figure 63)

fOSC=2MHz, fCPU=1MHz

fOSC=4MHz, fCPU=2MHz

fOSC=8MHz, fCPU=4MHz

fOSC=16MHz, fCPU=8MHz

0.3

0.8

1.6

3.5

1.5

Supply current in SLOW mode 4)

(see Figure 64)

fOSC=2MHz, fCPU=62.5kHz

fOSC=4MHz, fCPU=125kHz

fOSC=8MHz, fCPU=250kHz

fOSC=16MHz, fCPU=500kHz

0.1

0.2

0.3

0.5

0.3

0.5

0.6

1.0

3.2

3.5

4.5

5.5

VDD [V]

IDD [mA]

8MHz

4MHz

2MHz

1MHz

3.2

3.5

4.5

5.5

VDD [V]

0.2

0.4

0.6

0.8

1.2

IDD [mA]

500kHz

250kHz

125kHz

62.5kHz

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