ST7PLITE39F2U6TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7PLITE39F2U6TR

8-bit MCU with single voltage Flash, data EEPROM, ADC, timers, SPI, LINSCI™

STMicroelectronics 

ST7LITE3xF2

13.5 CLOCK AND TIMING CHARACTERISTICS

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

13.5.1 General Timings

Symbol

Parameter 1)

Conditions

tc(INST)

tv(IT)

Instruction cycle time

Interrupt reaction time 3)

tv(IT) = ∆tc(INST) + 10

fCPU=8MHz

fCPU=8MHz

Min

2

250

10

1.25

Typ 2)

3

375

Max

12

1500

22

2.75

Unit

tCPU

ns

tCPU

µs

13.5.2 External Clock Source

Symbol

Parameter

Conditions

VOSC1H or VCLKIN_H

VOSC1L or VCLKIN_L

tw(OSC1H) or tw(CLKINH)

tw(OSC1L) or tw(CLKINL)

tr(OSC1) or tr(CLKIN)

tf(OSC1) or tf(CLKIN)

IL

OSC1/CLKIN input pin high level voltage

OSC1/CLKIN input pin low level voltage

OSC1/CLKIN high or low time 4)

see Figure 83

OSC1/CLKIN rise or fall time 4)

OSCx/CLKIN Input leakage current

VSS≤VIN≤VDD

Min Typ

0.7xVDD

VSS

15

Max

VDD

0.3xVDD

Unit

V

ns

15

±1

µA

Notes:

1. Guaranteed by Design. Not tested in production.

2. Data based on typical application software.

3. Time measured between interrupt event and interrupt vector fetch. ∆tc(INST) is the number of tCPU cycles needed to fin-

ish the current instruction execution.

4. Data based on design simulation and/or technology characteristics, not tested in production.

Figure 83. Typical Application with an External Clock Source

VOSC1H or VCLKINH

VOSC1L or VCLKINL

90%

10%

tr(OSC1 or CLKIN) tf(OSC1 or CLKIN)

tw(OSC1H or CLKINH) tw(OSC1L or CLKINL)

EXTERNAL

CLOCK SOURCE

OSC2

Not connected internally

OSC1/CLKIN

fOSC

IL

ST72XXX

143/173

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