ADSP-BF531WBBCZ-4A AD [Analog Devices], ADSP-BF531WBBCZ-4A Datasheet - Page 26

• Manufacturer Part Number: ADSP-BF531WBBCZ-4A
• Description: Blackfin Embedded Processor
• Manufacturer: AD [Analog Devices]

ADSP-BF531/ADSP-BF532
Asynchronous Memory Write Cycle Timing
Table 17. Asynchronous Memory Write Cycle Timing
1
Parameter
Timing Requirements
t
t
Switching Characteristics
t
t
t
t
Output pins include AMS3–0, ABE1–0, ADDR19–1, DATA15–0, AOE, AWE.
SARDY
HARDY
DDAT
ENDAT
DO
HO
ADDR19–1
DATA15–0
CLKOUT
ABE1–0
AMSx
ARDY
AWE
ARDY Setup Before CLKOUT
ARDY Hold After CLKOUT
DATA15–0 Disable After CLKOUT
DATA15–0 Enable After CLKOUT
Output Delay After CLKOUT
Output Hold After CLKOUT
2 CYCLES
t
ENDAT
SETUP
t
DO
t
DO
ABE, ADDRESS
WRITE DATA
t
SARDY
1
PROGRAMMED WRITE
1
ACCESS 2 CYCLES
Figure 12. Asynchronous Memory Write Cycle Timing
Rev. D | Page 26 of 60 | August 2006
t
SARDY
EXTENDED
1 CYCLE
ACCESS
t
HO
t
HARDY
1 CYCLE
HOLD
t
HO
t
DD AT
V
Min
4.0
1.0
1.0
1.0
DDEXT
= 1.8 V V
Max
6.0
6.0
Min
4.0
0.0
1.0
0.8
DDEXT
= 2.5 V/3.3 V
Max
6.0
6.0
Unit
ns
ns
ns
ns
ns
ns