ADSP-2181KSZ-160 Datasheet, PDF (18/32 Pages) Analog Devices – DSP Microcomputer

ADSP-2181
Parameter
Memory Write
Switching Characteristics:
t_DW
t_DH
t_WP
t_WDE
t_ASW
t_DDR
t_CWR
t_AW
t_WRA
t_WWR
Data Setup before WR High
Data Hold after WR High
WR Pulsewidth
WR Low to Data Enabled
A0–A13, xMS Setup before WR Low
Data Disable before WR or RD Low
CLKOUT High to WR Low
A0–A13, xMS, Setup before WR Deasserted
A0–A13, xMS Hold after WR Deasserted
WR High to RD or WR Low
w = wait states × t_CK.
xMS = PMS, DMS, CMS, IOMS, BMS.
Min
0.5t_CK – 7 + w
0.25t_CK – 2
0.5t_CK – 5 + w
0
0.25t_CK – 4
0.25t_CK – 4
0.25t_CK – 5
0.75t_CK – 9 + w
0.25t_CK – 3
0.5t_CK – 5
Max
0.25 t_CK + 7
CLKOUT
A0–A13
DMS, PMS,
BMS, CMS,
IOMS
WR
D
RD
t_WRA
t_ASW
t_CWR
t_WP
t_AW
t_DW
t_WDE
t_WWR
t_DH
t_DDR
Figure 12. Memory Write
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
–18–
REV. D