HM6216255HTT-15 HITACHI, HM6216255HTT-15 Datasheet - Page 8

• Manufacturer Part Number: HM6216255HTT-15
• Manufacturer: HITACHI

Specifications of HM6216255HTT-15

• Lead Free Status / Rohs Status: Supplier Unconfirmed

HM6216255H Series
Write Cycle
Parameter
Write cycle time
Address valid to end of write
Chip select to end of write
Write pulse width
Byte select to end of write
Address setup time
Write recovery time
Data to write time overlap
Data hold from write time
Write disable to output in low-Z
Output disable to output in high-Z
Write enable to output in high-Z
Notes: 1. Transition is measured 200 mV from steady voltage with Load (B). This parameter is sampled
8
2. If the CS or LB or UB low transition occurs simultaneously with the WE low transition or after the
3. WE and/or CS must be high during address transition time.
4. If CS, OE, LB and UB are low during this period, I/O pins are in the output state. Then the data
5. t
6. t
7. A write occurs during the overlap of low CS, low WE and low LB or low UB.
8. t
9. t
10. t
and not 100% tested.
WE transition, output remains a high impedance state.
input signals of opposite phase to the outputs must not be applied to them.
AS
WR
CW
LBW
UBW
is measured from the latest address transition to the latest of CS, WE, LB or UB going low.
is measured from the earliest of CS, WE, LB or UB going high to the first address transition.
is measured from the later of CS going low to the end of write.
is measured from the later of LB going low to the end of write.
is measured from the later of UB going low to the end of write.
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
WC
AW
CW
WP
LBW
AS
WR
DW
DH
OW
OHZ
WHZ
, t
UBW
-10
HM6216255H
Min
10
7
7
7
7
0
0
5
0
3
—
—
Max
—
—
—
—
—
—
—
—
—
—
5
5
-12
Min
12
8
8
8
8
0
0
6
0
3
—
—
Max
—
—
—
—
—
—
—
—
—
—
6
6
-15
Min
15
10
10
10
10
0
0
7
0
3
—
—
Max
—
—
—
—
—
—
—
—
—
—
7
7
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
8
7
9, 10
5
6
1
1
1