Datasheet

M48T58, M48T58Y WRITE mode
Doc ID 2412 Rev 8 13/33
Table 4. WRITE mode AC characteristics
Symbol Parameter
(1)
1. Valid for ambient operating temperature: T
A
= 0 to 70 °C; V
CC
= 4.75 to 5.5 V or 4.5 to 5.5 V (except where
noted).
M48T58/Y
Unit
Min Max
t
AVAV
WRITE cycle time 70 ns
t
AVWL
Address valid to WRITE enable low 0 ns
t
AVE1L
Address valid to chip enable 1 low 0 ns
t
AVE2H
Address valid to chip enable 2 high 0 ns
t
WLWH
WRITE enable pulse width 50 ns
t
E1LE1H
Chip enable 1 low to chip enable 1 high 55 ns
t
E2HE2L
Chip enable 2 high to chip enable 2 low 55 ns
t
WHAX
WRITE enable high to address transition 0 ns
t
E1HAX
Chip enable 1 high to address transition 0 ns
t
E2LAX
Chip enable 2 low to address transition 0 ns
t
DVWH
Input valid to WRITE enable high 30 ns
t
DVE1H
Input valid to chip enable 1 high 30 ns
t
DVE2L
Input valid to chip enable 2 low 30 ns
t
WHDX
WRITE enable high to input transition 5 ns
t
E1HDX
Chip enable 1 high to input transition 5 ns
t
E2LDX
Chip enable 2 low to input transition 5 ns
t
WLQZ
(2)(3)
2. C
L
= 5 pF.
3. If E1
goes low or E2 high simultaneously with W going low, the outputs remain in the high impedance
state.
Write enable low to output Hi-Z 25 ns
t
AVWH
Address valid to WRITE enable high 60 ns
t
AVE1H
Address valid to chip enable 1 high 60 ns
t
AVE2L
Address valid to chip enable 2 low 60 ns
t
WHQX
(2)(3)
WRITE enable high to output transition 5 ns