
ADMC200
REV. A
–3–
9
Table I. ADMC200 Timing Specifications (V
DD
= 5 V
6
5%; T
A
= –4
0
8
C to +85
8
C)
Number
Symbol
ADMC200 Timing Requirements
Min
Max
Units
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
t
per
clk
t
pwh
clk
t
pwl
clk
t
su
csb_wrb
t
su
addr_wrb
t
su
data_wrb
t
hd
wrb_data
t
hd
wrb_addr
t
hd
wrb_csb
t
pwl
wrb
1
t
pwh
wrb
1
t
hd
wrb_clk_h
1
t
su
wrb_clk_h
1
t
su
wrb_clk_l
1
t
hd
clk_wrb_l
1
t
su
csb_rdb
t
su
addr_rdb
t
hd
rdb_addr
t
hd
rdb_csb
t
pwl
rdb
t
pwh
rdb
t
su
rdb_clk_h
t
hd
rdb_clk_h
t
pwl
resetb
CLK Period
CLK Pulse Width, High
CLK Pulse Width, Low
CS
Low before Falling Edge of
WR
ADDR Valid before Falling Edge of
WR
DATA Valid before Rising Edge of
WR
DATA Hold after Rising Edge of
WR
ADDR Hold after Rising Edge of
WR
CS
Hold after Rising Edge of
WR
WR
Pulse Width, Low
WR
Pulse Width, High
WR
Low after Rising Edge of CLK
WR
High before Rising Edge of CLK
WR
High before Falling Edge of CLK
WR
High after Falling Edge of CLK
CS
Low before Falling Edge of
RD
ADDR Valid before Falling Edge of
RD
ADDR Hold after Rising Edge of
RD
CS
Hold after Rising Edge of
RD
RD
Pulse Width, Low
RD
Pulse Width, High
RD
Low before Rising Edge of CLK
RD
Low after Rising Edge of CLK
RESET
Pulse Width, Low
40
20
20
0
0
13
4.5
4.5
4.5
20
20
7
7
10
10
0
0
0
0
20
20
7.5
7.5
2
×
t
per
clk
160
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTE
1
All WRITES to the ADMC200 must occur within 1 system clock cycle (0 wait states).
Number
Symbol
ADMC200 Switching Characteristics
Min
Max
Units
25
26
t
dly
rdb_data
t
hd
rdb_data
DATA Valid after Falling Edge of
RD
DATA Hold after Rising Edge of
RD
–
0
23
–
ns
ns
11
4
5
6
7
10
12
15
13
9
8
14
CLK
CS
A0–A3
WR
DATA
NOTE:
ALL WRITES TO THE ADMC200 MUST OCCUR WITHIN
ONE SYSTEM CLOCK CYCLE (i.e. 0 WAIT STATES)
Figure 3. Write Cycle Timing Diagram
1
2
3
CLK
Figure 1. Clock Input Timing
24
CLK
RESET
Figure 2. Reset Input Timing