ST7FMC2S5TC(2004) 查看數據表（PDF） - STMicroelectronics

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ST7FMC2S5TC
(Rev.:2004)

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

STMicroelectronics 

ST7MC1/ST7MC2

CLOCK AND TIMING CHARACTERISTICS (Cont’d)

11.5.4 Clock Security System with PLL

Table 89. PLL Characteristics

Symbol

Parameter

Min

Typ

Max

Unit

Fosc

PLL input frequency range

7

8

MHz

Output Frequency Output frequency when the PLL attain lock.

16

MHz

tLock

Jitter

fcpu

PLL Lock Time (LOCKED = 1)

Jitter in the output clock

CPU clock frequency when VCO is con-

nected to ground (ICD internal clock or

back up oscillator )

50

100

µs

2

%

3

MHz

Table 90. Clock Detector Characteristics

Symbol

Parameter

Min

Typ

Max

Unit

fDetect

Detected Minimum Input Frequency

500 1)

KHz

tsetup

Time needed to detect OSCIN once CKD is

enabled

3

µs

thold

Time needed to detect that OSCIN stops

3

µs

Notes:

1. Data based on characterization results, not tested in production.

254/294

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