ST72T631K4D0 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72T631K4D0

LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C

STMicroelectronics 

ST7263

7.6 LOW VOLTAGE DETECTOR (LVD) CHARACTERISTICS

LOW VOLTAGE RESET Electrical Specifications

Symbol

Parameter

Conditions

VIT+

VIT-

Vhys

Low Voltage Reset Threshold

VDD rising

Low Voltage Reset Threshold

VDD falling

Hysteresis (VIT+ - VIT-)

VDD Max. Variation

50mV/µs

VDD Max. Variation

50mV/µs

Min

Typ

Max

Unit

3.6

3.75

4.0

V

3.2

3.5

3.7

V

200

250

mV

7.7 CONTROL TIMING CHARACTERISTICS

(Operating conditions TA = 0 to +70°C unless otherwise specified)

CONTROL TIMINGS

Symbol

Parameter

fOSC

fCPU

tRL

tPORL

TDOGL

Oscillator Frequency

Operating Frequency

External RESET

Input pulse Width

Internal Power Reset Duration

Watchdog & Low Voltage Reset

Output Pulse Width

tDOG

tOXOV

tDDR

Watchdog Time-out

Crystal Oscillator

Start-up Time

Power up rise time

Conditions

fcpu = 8MHz

from VDD = 0 to 4V

Min

1.5

4096

200

49152

6

Value

Typ.

Max

24

8

3145728

384

50

100

Unit

MHz

MHz

tCPU

tCPU

ns

tCPU

ms

ms

ms

Note 1: The minimum period tILIL should not be less than the number of cycle times it takes to execute the

interrupt service routine plus 21 cycles.

C

98/109

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