ST7578
14. TIMING CHARACTERISTICS
System Bus Read/Write Characteristics 1 (For the 8080 Series MPU)
(VDD = 3.3V , Ta =-30~85°C)
Item
Address setup time
Signal
Symbol
tAW8
Condition
Min.
80
Max.
—
Unit
A0
Address hold time
tAH8
10
—
System cycle time
tCYC8
tCCLW
tCCHW
tCCLR
tCCHR
tDS8
350
70
—
/WR
RD
Enable L pulse width (WRITE)
Enable H pulse width (WRITE)
Enable L pulse width (READ)
Enable H pulse width (READ)
WRITE Data setup time
WRITE Data hold time
—
50
—
ns
120
50
—
60
—
—
70
50
tDH8
10
D[7:0]
READ access time
tACC8
tOH8
CL = 16 pF
CL = 16 pF
—
READ Output disable time
10
(VDD = 2.8V , Ta =-30~85°C)
Item
Signal
Symbol
tAW8
Condition
Min.
120
15
Max.
—
Unit
Address setup time
A0
Address hold time
tAH8
—
System cycle time
tCYC8
tCCLW
tCCHW
tCCLR
tCCHR
tDS8
450
120
100
120
100
90
—
/WR
RD
Enable L pulse width (WRITE)
Enable H pulse width (WRITE)
Enable L pulse width (READ)
Enable H pulse width (READ)
WRITE Data setup time
WRITE Data hold time
READ access time
—
—
ns
—
—
—
tDH8
15
—
D[7:0]
—
tACC8
tOH8
CL = 16 pF
CL = 16 pF
140
100
READ Output disable time
10
Ver 1.2
37/52
2007/04/30
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
