ST7PMC2N6B6(2004) 查看數據表（PDF） - STMicroelectronics

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ST7PMC2N6B6
(Rev.:2004)

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

STMicroelectronics 

ST7MC1/ST7MC2

11.5 CLOCK AND TIMING CHARACTERISTICS

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

11.5.1 General Timings

Symbol

Parameter

Conditions

tc(INST)

tv(IT)

Instruction cycle time

Interrupt reaction time 2)

tv(IT) = ∆tc(INST) + 10

fCPU=8MHz

fCPU=8MHz

Min

Typ 1)

Max

2

3

12

250

375

1500

10

22

1.25

2.75

Unit

tCPU

ns

tCPU

µs

Notes:

1. Data based on typical application software.

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

the current instruction execution.

11.5.2 External Clock Source

Symbol

VOSC1H

VOSC1L

tw(OSC1H)

tw(OSC1L)

tr(OSC1)

tf(OSC1)

IL

Parameter

OSC1 input pin high level voltage

OSC1 input pin low level voltage

OSC1 high or low time 1)

OSC1 rise or fall time 1)

OSCx Input leakage current

Conditions

see Figure 133

VSS≤VIN≤VDD

Min

Typ

0.7xVDD

VSS

25

Max

VDD

0.3xVDD

Unit

V

ns

5

±1

µA

Figure 133. Typical Application with an External Clock Source

VOSC1H

VOSC1L

90%

10%

tr(OSC1)

tf(OSC1)

tw(OSC1H)

tw(OSC1L)

VDD

OSC2

EXTERNAL

CLOCK SOURCE

OSC1

fOSC

IL

ST7FMC

Notes:

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

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