PXR40 Datasheet, PDF (84/100 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Electrical characteristics
5.12.5 External Bus Interface (EBI) timing
Table 33. Bus operation timing ¹
Spec
Characteristic
66 MHz (Ext. Bus Freq)^{2 3}
Symbol
Unit
Min
Max
Notes
1 D_CLKOUT Period
2 D_CLKOUT Duty Cycle
3 D_CLKOUT Rise Time
4 D_CLKOUT Fall Time
5 D_CLKOUT Posedge to Output
Signal Invalid or High Z (Hold Time)
t_C
t_CDC
t_CRT
t_CFT
t_COH
D_ADD[9:30]
D_BDIP
D_CS[0:3]
D_DAT[0:15]
D_OE
D_RD_WR
D_TA
D_TS
D_WE[0:3]/D_BE[0:3]
6 D_CLKOUT Posedge to Output
Signal Valid (Output Delay)
t_COV
D_ADD[9:30]
D_BDIP
D_CS[0:3]
D_DAT[0:15]
D_OE
D_RD_WR
D_TA
D_TS
D_WE[0:3]/D_BE[0:3]
15.2
45%
—
—
1.0/1.5
—
—
55%
—⁴
—⁴
—
ns Signals are measured at 50% V_DDE.
t_C
ns
ns
ns Hold time selectable via
SIU_ECCR[EBTS] bit:
EBTS = 0: 1.0 ns
EBTS = 1: 1.5 ns
7.0/7.5
ns Output valid time selectable via
SIU_ECCR[EBTS] bit:
EBTS = 0: 7.0 ns
EBTS = 1: 7.5 ns
PXR40 Microcontroller Data Sheet, Rev. 1
84
Freescale Semiconductor