CDP1854 Intersil Corporation, CDP1854 Datasheet - Page 17

• Manufacturer Part Number: CDP1854
• Description: Programmable Universal Asynchronous Receiver/Transmitter (UART)
• Manufacturer: Intersil Corporation

Dynamic Electrical Specifications
NOTES:
1. Typical values for T
2. Maximum limits of minimum characteristics are the values above which all devices function.
INTERFACE TIMING - MODE 0
Minimum Pulse Width
Minimum Setup Time
Minimum Hold Time
Propagation Delay Time
CRL
MR
Control Word to CRL
Control Word after CRL
SFD High to SOD
SFD Low to SOD
RRD High to Receiver Register
High Impedance
RRD Low to Receiver Register Active
CONTROL WORD INPUT
STATUS OUTPUTS
R BUS 0
R BUS 7
PARAMETER
A
RRD
CRL
SFD
= 25
CONTROL INPUT WORD TIMING
STATUS OUTPUT TIMING
RECEIVER REGISTER DISCONNECT TIMING
o
C and nominal voltages.
t
RRDH
t
SFDH
FIGURE 9. MODE 0 INTERFACE TIMING DIAGRAM
T
(See Figure 9)
A
= -40
t
t
t
t
t
t
RRDH
SFDH
RRDL
CDP1854A, CDP1854AC
t
SFDL
CWC
CCW
t
CRL
MR
o
C to +85
t
CWC
o
V
(V)
C, V
10
10
10
10
10
10
10
10
DD
5
5
5
5
5
5
5
5
5-58
DD
t
CRL
5%, t
(NOTE 1)
TYP
100
200
100
100
200
100
200
100
100
50
40
20
50
75
40
50
R
, t
CDP1854A
F
= 20ns, V
(NOTE 2)
MAX
150
400
200
150
300
150
120
300
150
150
75
80
50
75
60
75
IH
= 0.7 V
LIMITS
(NOTE 1)
DD
t
CCW
TYP
100
200
100
200
200
100
, V
40
75
-
-
-
-
-
-
-
-
CDP1854AC
IL
t
RRDL
= 0.3 V
t
SFDL
(NOTE 2)
DD
MAX
150
400
150
300
120
300
150
80
-
-
-
-
-
-
-
-
, C
L
= 100pF,
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns