ADSP-2109 AD [Analog Devices], ADSP-2109 Datasheet - Page 32

• Manufacturer Part Number: ADSP-2109
• Description: Low Cost DSP Microcomputers
• Manufacturer: AD [Analog Devices]

ADSP-2104/ADSP-2109
TIMING PARAMETERS (ADSP-2104L/ADSP-2109L)
MEMORY WRITE
Parameter
Switching Characteristic:
t
t
t
t
t
t
t
t
t
t
w = wait states
DW
DH
WP
WDE
ASW
DDR
CWR
AW
WRA
WWR
Data Setup before WR High
Data Hold after WR High
WR Pulse Width
WR Low to Data Enabled
A0–A13, DMS, PMS Setup before WR Low
Data Disable before WR or RD Low
CLKOUT High to WR Low
A0–A13, DMS, PMS, Setup before WR Deasserted
A0–A13, DMS, PMS Hold After WR Deasserted
WR High to RD or WR Low
t
CK.
DMS, PMS
CLKOUT
A0 – A13
WR
RD
D
Figure 29. Memory Write
t
CWR
t
ASW
–32–
t
WDE
Min
23.2
8.1
28.2
0
8.1
8.1
13.1
32.2
9.1
31.2
t
13.824 MHz
AW
t
WP
t
Max
28.1
DW
t
WRA
t
DH
Min
0.5t
0.25t
0.5t
0.25t
0.25t
0.25t
0.75t
0.25t
0.5t
t
WWR
CK
CK
CK
Dependency
Frequency
CK
CK
CK
CK
CK
CK
t
DDR
– 13 + w
– 8 + w
– 5
– 10
– 10
– 5
– 22 + w
– 9
– 10
Max
0.25t
CK
+ 10
REV. 0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns