ST72C254G2 datasheet(103/140 Pages) STMICROELECTRONICS

103 / 140 page

ST72104G, ST72215G, ST72216G, ST72254G

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SUPPLY CURRENT CHARACTERISTICS (Cont’d)

14.4.2 WAIT and SLOW WAIT Modes

Figure 61. Typical IDD in WAIT vs. fCPU

Figure 62. Typical IDD in SLOW-WAIT 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. 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-WAIT 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

Typ 1)

Max 2)

Unit

IDD

Supply current in WAIT mode 3)

(see Figure 61)

fOSC=1MHz, fCPU=500kHz

fOSC=4MHz, fCPU=2MHz

fOSC=16MHz, fCPU=8MHz

150

560

2200

280

900

3000

µA

Supply current in SLOW WAIT mode 4)

(see Figure 62)

fOSC=1MHz, fCPU=31.25kHz

fOSC=4MHz, fCPU=125kHz

fOSC=16MHz, fCPU=500kHz

340

190

850

Supply current in WAIT mode 3)

(see Figure 61)

fOSC=1MHz, fCPU=500kHz

fOSC=4MHz, fCPU=2MHz

fOSC=16MHz, fCPU=8MHz

350

1370

200

550

1900

Supply current in SLOW WAIT mode 4)

(see Figure 62)

fOSC=1MHz, fCPU=31.25kHz

fOSC=4MHz, fCPU=125kHz

fOSC=16MHz, fCPU=500kHz

200

350

3.2

3.5

4.5

5.5

VDD [V]

0.5

1.5

2.5

IDD [mA]

8MHz

4MHz

2MHz

500kHz

3.2

3.5

4.5

5.5

VDD [V]

0.05

0.1

0.15

0.2

0.25

0.3

0.35

IDD [mA]

500kHz

250kHz

125kHz

31.25kHz

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