mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1280

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Appendix A Electrical Characteristics
1
1280
No.
10
11
Includes the following signals: ADDRx, UDS, LDS, and CSx.
—
—
—
1
2
3
4
5
6
7
8
9
— Frequency of internal bus
— Internal cycle time
— Frequency of external bus
— External cycle time (selected by EXSTR)
C
D
D
D
D
D
D
D
D
D
D
D
Address
Pulse width, RE
Address
Pulse width, WE
Read data setup time (if ITHRS = 0)
Read data setup time (if ITHRS = 1)
Read data hold time
Read enable access time
Write data valid to WE fall
Write data setup time
Write data hold time
Table A-28. Example 1a: Normal Expanded Mode Timing V
1
1
valid to RE fall
valid to WE fall
Characteristic
MC9S12XDP512 Data Sheet, Rev. 2.17
DD35
Symbol
PW
t
PW
t
t
t
WDWE
ADWE
t
t
ADRE
t
t
t
ACCR
t
DSW
DHW
t
DHR
cyce
DSR
DSR
cyc
f
f
o
i
WE
= 5.0 V (EWAITE = 0)
RE
D.C.
D.C.
Min
25
50
35
23
24
28
11
31
5
5
0
7
8
Freescale Semiconductor
Max
40.0
20.0
—
—
—
—
—
—
—
—
—
—
—
MHz
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns