SM8051C25 参数 Datasheet PDF下载

SyncMOS Technologies Inc.

May 2001

Application Reference

Valid for SM8051/8052

X'tal

C1

C2

R

X'tal

C1

C2

R

3MHz

30 pF

30 pF

open

16MHz

30 pF

30 pF

open

6MHz

30 pF

30 pF

open

25MHz

15 pF

15 pF

62KΩ

9MHz

30 pF

30 pF

open

33MHz

10 pF

10 pF

6.8KΩ

12MHz

30 pF

30 pF

open

40MHz

5 pF

5 pF

4.7KΩ

R

X2

C1

C2

XI

X'tal

SM8051/80952

SM8051/8052

NOTE: Oscillation circuit may differs with different crystal or ceramic

resonator in higher oscillation frequency which was due to each

crystal or ceramic resonator has its own characteristics.

User should check with the crystal or ceramic resonator manufacturer

for appropriate value of external components.

Data Memory Read Cycle Timing

T12

T1

T2

T3

T4

T5

T6

T7

T8

T9

T10

T11

T12

T1

T2

T3

OSC

1

2

ALE

#PSEN

#RD

5

7

3

PORT2

ADDRESS A15 - A8

3

4

Float

6

DATA in

8

Float

ADDRESS

or Float

PORT0

INST in Float

A7 - A0

Specifications subject to change without notice,contact your sales representatives for the most recent information.

9/16

Ver 1.1

SM8051/8052 07/2005