CDP1877 View Datasheet(PDF) - Intersil
Part Name
Description
View to exact match
CDP1877 Datasheet PDF : 10 Pages
| |||
CDP1877, CDP1877C
Dynamic Electrical Specifications At TA = -40 to +85oC, VDD ±5%, tR, tF = 20ns, VIH = 0.7VDD, VIL = 0.3VDD, CL = 50pF
LIMITS
CDP1877
CDP1877C
PARAMETER
VDD
(NOTE 1)
(NOTE 1)
(V)
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Address to TPA Setup Time
tAS
5
60
-
10
40
-
-
60
-
-
-
-
-
ns
-
ns
Address to TPA Hold Time
tAH
5
60
-
10
40
-
-
60
-
-
-
-
-
ns
-
ns
Data Valid after TPB
tDTPB
5
370
-
-
370
-
10
210
310
-
-
-
-
ns
-
ns
Data Hold Time from Write
tHW
5
30
-
10
40
-
-
30
-
-
-
-
-
ns
-
ns
Address to Valid Data
Access Time
tDR
5
-
10
-
340
490
-
125
230
-
340
490
ns
-
-
ns
Data Setup Time to Write
tDSU
5
0
-
-
0
-
-
ns
10
0
-
-
-
-
-
ns
Address Hold from TPB
tHTPB
5
80
-
10
40
-
-
80
-
-
-
-
-
ns
-
ns
Minimum MWR Pulse Width tMWR
5
130
-
10
60
-
-
130
-
-
-
-
-
ns
-
ns
Minimum IR Pulse Width
tIRX
5
130
-
10
60
-
-
130
-
-
-
-
-
ns
-
ns
NOTE:
1. Typical values are for TA = 25oC and VDD ±5%.
TPA
MEMORY ADDRESS
TPB
MRD
DATA FROM PIC TO BUS
MWR
DATA FROM BUS TO PIC
IRX
tAS
HIGH BYTE
tAH
LOW BYTE
tHTPB
tDR
VALID DATA
tIRX
tDTPB
tMWR
tDSU
tDH
VALID DATA
FIGURE 4. TIMING WAVEFORMS FOR CDP1877
4-90
Share Link: 