ST72E121 datasheet(83/92 Pages) STMICROELECTRONICS

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ST72E121 ST72T121

6.3 DC ELECTRICAL CHARACTERISTICS

(TA = -40°C to +125°C and VDD = 5V unless otherwise specified)

Notes:

1. Hysteresis voltage between switching levels. Based on characterisation results, not tested.

2. CPU running with memory access, no DC load or activity on I/O’s; clock input (OSCIN) driven by external square wave.

3. No DC load or activity on I/O’s; clock input (OSCIN) driven by external square wave.

4. Except OSCIN and OSCOUT

5. WAIT Mode with SLOW Mode selected. Based on characterisation results, not tested.

Symbol

Parameter

Test Conditions

Value

Unit

Min.

Typ.

Max.

VIL

Input Low Level Voltage

All Input pins

3V < VDD < 5.5V

VDD x 0.3

VIH

Input High Level Voltage

All Input pins

3V < VDD < 5.5V

VDD x 0.7

VHYS

Hysteresis Voltage 1)

All Input pins

400

VOL

Low Level Output Voltage

All Output pins

IOL =+10µA

IOL = + 2mA

0.1

0.4

Low Level Output Voltage

High Sink I/O pins

IOL =+10µA

IOL = +10mA

IOL = + 15mA

IOL = + 20mA, TA =85°Cmax

0.1

1.5

3.0

VOH

High Level Output Voltage

All Output pins

IOH =- 10µA

IOH= - 2mA

4.9

4.2

IIL

IIH

Input Leakage Current

All Input pins but RESET 4)

VIN =VSS (No Pull-up configured)

VIN =VDD

0.1

1.0

µA

IIH

Input Leakage Current

RESET pin

VIN =VDD

0.1

1.0

RON

Reset Weak Pull-up RON

VIN >VIH

VIN <VIL

120

240

Ω

RPU

I/O Weak Pull-up RPU

VIN <VIL

100

Ω

IDD

Supply Current in

RUN Mode 2)

fOSC = 4 MHz, fCPU =2 MHz

fOSC = 8 MHz, fCPU =4 MHz

fOSC = 16 MHz, fCPU =8 MHz

3.5

Supply Current in SLOW

Mode 2)

fOSC = 4 MHz, fCPU= 125 kHz

fOSC = 8 MHz, fCPU= 250 kHz

fOSC = 16 MHz, fCPU= 500 kHz

1.5

2.5

4.5

Supply Current in WAIT

Mode 3)

fOSC = 4MHz, fCPU = 2MHz

fOSC = 8MHz, fCPU = 4 MHz

fOSC = 16MHz, fCPU =8 MHz

6.5

Supply Current in WAIT-

MINIMUM Mode5)

fOSC = 4 MHz, fCPU= 125 kHz

fOSC = 8 MHz, fCPU= 250 kHz

fOSC = 16 MHz, fCPU= 500 kHz

0.8

1.6

1.5

3.5

Supply Current in HALT

Mode

ILOAD = 0mA without LVD, TA =85°Cmax

ILOAD = 0mA without LVD

ILOAD = 0mA with LVD

100

µA

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