TS68HC901 datasheet(40/42 Pages) STMICROELECTRONICS

tên linh kiện	TS68HC901

Giải thích chi tiết về linh kiện	HCMOS MULTI-FUNCTION PERIPHERAL

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Figure 34 : INTR Test Load

CR YSTAL PAR AMET ERS :

Par allel resonance, f undament al mode AT cut

RS ≤ 150Ω (FR = 2.8–5.0MHz);

RS ≤ 300Ω (FR = 2.0–2.7MHz)

CL = 18pf ; CM = 0.02pf;Ch = 5pf ; LM = 96mH

FR (typ) = 2.4576MHz

Figure 35 : External Oscillator Components

CAPACITANCE

TA =25°C, f = 1MHz unmeasured pins returned to ground.

Symbol

Parameter

Test Condition

Max.

Unit

C IN

Input Capacitance

Unmeasured pins returned to

ground

COUT

Tri-state Output Capacitance

F or all outputs except DTACK

For D TACK

C L = 100pf

C L =130pf

R L =20k Ω

R L =6kΩ

R 1 =1. 9kΩ

R 1 =740Ω

Figure 33 : Typical Test Load

OT HE R POSSIBLE CONFIGU RATION:

XTA L1 dri ven with a C MOS clock and XTAL2 not connec-

ted

Figure 36 : External Clock Connection.

Symbol

Parameter

Value

Unit

4MHz

5MHz

8MHz

Min.

Max.

Min.

Max.

Min.

Max.

Frequency of Operation

1.0

4.0

1.0

5.0

1.0

8.0

MHz

tcyc

Cycle Time

250

1000

200

1000

125

1000

tCL,tCH

Clock Pulse Width

110

480

tCr,tCf

Rise and Fall Times

CLOCK TIMING

TS68HC901

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