ST72E311 datasheet(89/100 Pages) STMICROELECTRONICS

部件名	ST72E311

功能描述	8-BIT MCU WITH 8 TO 16K OTP/EPROM, 384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS

PDF	100 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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89 / 100 page

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ST72E311 ST72T311

6.4 RESET CHARACTERISTICS

(TA=-40...+125

oC and V

DD=5V±10% unless otherwise specified.

Note:

1) These values given only as design guidelines and are not tested.

6.5 OSCILLATOR CHARACTERISTICS

(TA = -40°C to +125°C unless otherwise specified)

6.6 PERIPHERAL CHARACTERISTICS

Notes:

1. The safe reset cannot be guaranted by the LVD when fosc is greater than 8MHz.

2. Based on characterisation results, not tested.

Symbol

Parameter

Condition s

Min

Typ 1)

Max

Unit

RON

Reset Weak Pull-up R

VIN >VIH

VIN <VIL

120

240

Ω

tRESET

Pulse duration generated by watch-

dog and POR reset

µs

tPULSE

Minimum pulse duration to be ap-

plied on external RESET pin

10 1)

Symbol

Parameter

Test Conditions

Value

Unit

Min.

Typ.

Max.

Oscillator transconductance

mA/V

fOSC

Crystal frequency

MHz

tstart

Osc. start up time

VDD =5V±10%

Low Voltage Detection Reset Electrical Specifications (Optio n)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VLVDUP

LVD Reset Trigger, VDD rising edge

fOSC = 8 MHz max

1).

3.6 2)

3.85

4.1

VLVDDOWN

LVD Reset Trigger, VDD falling edge

3.35

3.6

3.85

VLVDHYS

LVD Reset Trigger, hysteresis2)

250

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