com81c17 Standard Microsystems Corp., com81c17 Datasheet - Page 13

• Manufacturer Part Number: com81c17
• Description: Twenty Pin Uart Tpuart Corporation
• Manufacturer: Standard Microsystems Corp.

WRITE CYCLE
t
t
t
t
t
READ CYCLE
t
t
t
t
t
GENERAL TIMING
t
t
t
t
t
nCP1, nCP2 data
CLOCK FREQUENCY
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
SYMBOL
nCS, RS to nWR
nCS, RS hold time to nWR
nWR pulse width
Data BUS in setup time to nWR
Data BUS in hold time to nWR
nCS, RS to nWR
nCS, RS hold time to nWR
nWR pulse width
Data BUS in setup time to nWR
Data BUS in hold time to nWR
Reset Pulse Width
nCP1 active to nINT
nWR rising edge to nCP2 change
CP1, CP2 pulse width
Read Write Interval
Rise Time
Fall Time
Rise Time
Fall Time
Internal Baud Rate Mode
External Baud Rate Mode
Duty Cycle
Table 9 - AC CHARACTERISTICS
DESCRIPTION
AC CHARACTERISTICS
setup time
setup time
13
MIN TYP
100
100
100
1.0
1.0
50
75
10
50
0
0
0
0
40/60
MAX
11.0
300
200
1.6
60
60
30
30
30
30
ns
ns
ns
ns
ns
ns
ns
ns
ns @50pf max
ns @50pf max
ns
ns @25pf
ns @25pf
ns
ns
MHz
MHz
%
s
s @25pf
s
s
UNITS