IC80C51
IC80C31
EXTERNAL MEMORY CHARACTERISTICS
24 MHz
Clock
Min Max
40 MHz
Clock
Min Max
Variable Oscillator
(3.5-40 MHz)
Symbol Parameter
Min
Max
12tCLCL+10
—
Unit
ns
tXLXL
Serial port clock cycle time
490 510
290 310
12tCLCL–10
10tCLCL–10
tQVXH
Output data setup to
clock rising edge
406
73
0
—
240
40
0
—
ns
tXHQX
tXHDX
tXHDV
Output data hold after
clock rising edge
—
—
2tCLCL–10
—
—
ns
ns
ns
Input data hold after
clock rising edge
—
—
0
Clock rising edge to
input data valid
—
417
—
250
—
10tCLCL
EXTERNAL CLOCK DRIVE
Symbol
1/tCLCL
tCHCX
Parameter
Min
Max
40
—
Unit
MHz
ns
Oscillator Frequency
High time
3.5
10
10
—
tCLCX
Low time
—
ns
tCLCH
Rise time
10
10
ns
tCHCL
Fall time
—
ns
ROM VERIFICATION CHARACTERISTICS
Symbol
1/tCLCL
tAVQV
Parameter
Min
4
Max
6
Unit
Oscillator Frequency
Address to data valid
ENABLE low to data valid
Data float after ENABLE
MHz
—
—
0
40tCLCL
48tCLCL
48tCLCL
tELQV
tEHQZ
S3-40
Integrated Circuit Solution Inc.
MC001-0B
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
