ST52T400 查看數據表（PDF） - STMicroelectronics

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ST52T400

8-BIT INTELLIGENT CONTROLLER UNIT (ICU) Timer/PWM, Analog Comparator, Triac/PWM Timer, WDG

STMicroelectronics 

ST52T400/T440/E440/T441

11.4 Supply Current Characteristics

Supply current is mainly a function of the operating

voltage and frequency. Other factors such as I/O

pin loading and switching rate, oscillator type,

internal code execution pattern and temperature,

also have an impact on the current consumption.

The test condition in RUN mode for all the IDD

measurements are:

OSCin = external square wave, from rail to rail;

OSCout = floating;

All I/O pins tristated pulled to VDD

TA=25°C

Table 11.5 Supply Current in RUN and WAIT Mode

Symbol

Parameter

Conditions

Typ

Max3)

Unit

fosc=2 Mhz

6.48

6.48

Supply current in RUN mode 1)

fosc=4 Mhz

fosc=5 Mhz,

7.95

9.08

8.16

9.27

fosc=10

15.5

15.6

IDD

VDD=5V±5%

fosc=20

28.3

28.92

mA

TA=25°C

fosc=2 MHz

4.4

4.41

Supply current in WAIT mode2)

fosc=4 MHz

6.0

fosc=5 MHz

6.6

6.09

6.89

fosc=10

12.2

12.31

fosc=20

23.0

23.07

Notes:

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

peripherals switched off; clock input (OSCin driven by external square wave).

2. CPU in WAIT mode with all I/O pins in input mode with a static value at VDD (no load), all peripherals

switched off; clock input (OSCin driven by external square wave).

3. Data based on characterization results, tested in production at VDDmax and foscmax.

Figure 11.4 Typical IDD in RUN vs fosc

35

30

25

20

15

10

5

0

2.0

3.0

4.0

5.0

6.0

VDD[V]

2MHz 4MHz 5MHz 10MHz 20MHz

Figure 11.5 Typical IDD in WAIT vs fosc

30

25

20

15

10

5

0

2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

VDD[V]

2MHz 4MHz 5MHz 10MHz 20MHz

75/94

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