ST7MC1 datasheet(255/308 Pages) STMICROELECTRONICS

部品番号	ST7MC1

部品情報	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI

PDF	308 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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ST7MC1/ST7MC2

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12.5 CLOCK AND TIMING CHARACTERISTICS

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

12.5.1 General Timings

Notes:

1. Data based on typical application software.

2. Time measured between interrupt event and interrupt vector fetch.

∆t

c(INST) is the number of tCPU cycles needed to finish

the current instruction execution.

12.5.2 External Clock Source

Figure 135. Typical Application with an External Clock Source

Notes:

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

Symbol

Parameter

Conditions

Min

Typ 1)

Max

Unit

tc(INST)

Instruction cycle time

tCPU

fCPU=8MHz

250

375

1500

tv(IT)

Interrupt reaction time 2)

tv(IT) = ∆tc(INST) + 10

tCPU

fCPU=8MHz

1.25

2.75

µs

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VOSC1H

OSC1 input pin high level voltage

see Figure 135

0.7xVDD

VDD

VOSC1L

OSC1 input pin low level voltage

VSS

0.3xVDD

tw(OSC1H)

tw(OSC1L)

OSC1 high or low time 1)

tr(OSC1)

tf(OSC1)

OSC1 rise or fall time 1)

OSCx Input leakage current

VSS≤VIN≤VDD

± 1

µA

OSC1

OSC2

fOSC

EXTERNAL

ST7FMC

CLOCK SOURCE

VOSC1L

VOSC1H

tr(OSC1)

tf(OSC1)

tw(OSC1H)

tw(OSC1L)

90%

10%

VDD

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