ST6200C datasheet(81/100 Pages) STMICROELECTRONICS

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ST6200C/ST6201C/ST6203C

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11.9 CONTROL PIN CHARACTERISTICS

11.9.1 Asynchronous RESET Pin

Subject to general operating conditions for VDD, fOSC, and TA unless otherwise specified.

Notes:

1. Unless otherwise specified, typical data are based on TA=25°C and VDD=5V.

2. Data based on characterization results, not tested in production.

3. Hysteresis voltage between Schmitt trigger switching levels. Based on characterization results, not tested.

4. The RON pull-up equivalent resistor is based on a resistive transistor. This data is based on characterization results,

not tested in production.

5. All short pulse applied on RESET pin with a duration below th(RSTL)in can be ignored.

6. The reset network protects the device against parasitic resets, especially in a noisy environment.

7. The output of the external reset circuit must have an open-drain output to drive the ST6 reset pad. Otherwise the device

can be damaged when the ST6 generates an internal reset (LVD or watchdog).

Figure 63. Typical RON vs VDD with VIN=VSS

Symbol

Parameter

Conditions

Min

Typ 1)

Max

Unit

VIL

Input low level voltage 2)

0.3xVDD

VIH

Input high level voltage 2)

0.7xVDD

Vhys

Schmitt trigger voltage hysteresis 3)

200

400

RON

Weak pull-up equivalent resistor 4)

VIN=VSS

VDD=5V

150

350

900

Ω

VDD=3.3V

300

730

1900

RESD

ESD resistor protection

VIN=VSS

VDD=5V

2.8

Ω

VDD=3.3V

tw(RSTL)out Generated reset pulse duration

External pin or

internal reset sources

tCPU

µs

th(RSTL)in External reset pulse hold time

µs

tg(RSTL)in Filtered glitch duration

VDD [V]

100

200

300

400

500

600

700

800

900

1000

Ron [Kohm]

Ta=-40°C

Ta=25°C

Ta=95°C

Ta=125°C

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