ST72521AR6T6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72521AR6T6

8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE

STMicroelectronics 

ST72521

SUPPLY CURRENT CHARACTERISTICS (Cont’d)

12.4.2 WAIT and SLOW WAIT Modes (Flash devices)

Symbol

Parameter

Supply current in WAIT mode 2)

(see Figure 87)

IDD

Supply current in SLOW WAIT mode 2)

(see Figure 88)

Conditions

fOSC=2MHz, fCPU=1MHz

fOSC=4MHz, fCPU=2MHz

fOSC=8MHz, fCPU=4MHz

fOSC=16MHz, fCPU=8MHz

fOSC=2MHz, fCPU=62.5kHz

fOSC=4MHz, fCPU=125kHz

fOSC=8MHz, fCPU=250kHz

fOSC=16MHz, fCPU=500kHz

Typ Max 1) Unit

1.0

3.0

1.5

2.5

4.0

5.0

mA

4.5

7.0

0.58 1.2

0.65 1.3

0.77 1.8

mA

1.05 2.0

Figure 87. Typical IDD in WAIT vs. fCPU

Figure 88. Typical IDD in SLOW-WAIT vs. fCPU

6

8MHz

4MHz

5

2MHz

1MHz

4

3

2

1

0

3.2

3.6

4

4.4

4.8

5.2

5.5

Vdd (V)

1.20

500kHz

250kHz

1.00

125kHz

62.5kHz

0.80

0.60

0.40

0.20

0.00

3.2

3.6

4

4.4

4.8

5.2

5.5

Vdd (V)

Notes:

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

2. Measurements are done in the following conditions:

- Progam 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.

- CSS and 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 Section 12.5.4) and the

peripheral power consumption (Section 12.4.7).

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