MC9S12XF512_1 Datasheet, PDF (1225/1306 Pages) Freescale Semiconductor, Inc – S12X Microcontrollers

Appendix A Electrical Characteristics
Table A-27. Example 1a: Normal Expanded Mode Timing 50 MHz bus (EWAIT disabled)
No.
Characteristic
Symbol
- Frequency of internal bus
f_i
- Internal cycle time
t_cyc
- Frequency of external bus
f_o
1 External cycle time (selected by EXSTR)
2 Address ⁽¹⁾ valid to RE fall
t_cyce
t_ADRE
3 Pulse width, RE
PW_RE
4 Address valid to WE fall
t_ADWE
5 Pulse width, WE
PW_WE
6 Read data setup time (if ITHRS = 0)
t_DSR
Read data setup time (if ITHRS = 1)
t_DSR
7 Read data hold time
t_DHR
8 Read enable access time
t_ACCR
9 Write data valid to WE fall
t_WDWE
10 Write data setup time
t_DSW
11 Write data hold time
t_DHW
1. Includes the following signals: ADDRx, UDS, LDS, and CSx.
V_DD35=5.0V
C Min Max
- D.C. 50.0
- 20 ∞
- D.C. 25.0
- 40 ∞
D4
-
D 28
-
D4
-
D 18
-
D 19
-
D 23
-
D0
-
D4
-
D5
-
D 23
-
D6
-
Unit
MHz
ns
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Freescale Semiconductor
MC9S12XF - Family Reference Manual, Rev.1.19
1225