M48T59 Datasheet, PDF (6/21 Pages) STMicroelectronics – 64 Kbit 8Kb x8 TIMEKEEPER SRAM

M48T59, M48T59Y, M48T59V
Table 9. Read Mode AC Characteristics
(T_A = 0 to 70 °C or –40 to 85 °C; V_CC = 4.75V to 5.5V or 4.5V to 5.5V or 3.0V to 3.6V)
M48T59/M48T59Y/M48T59V
Symbol
Parameter
-70
Min
Max
t_AVAV Read Cycle Time
70
t_AVQV ⁽¹⁾ Address Valid to Output Valid
70
t_ELQV ⁽¹⁾ Chip Enable Low to Output Valid
70
t_GLQV ⁽¹⁾ Output Enable Low to Output Valid
35
t_ELQX ⁽²⁾ Chip Enable Low to Output Transition
5
t_GLQX ⁽²⁾ Output Enable Low to Output Transition
5
t_EHQZ ⁽²⁾ Chip Enable High to Output Hi-Z
25
t_GHQZ ⁽²⁾ Output Enable High to Output Hi-Z
25
t_AXQX ⁽¹⁾ Address Transition to Output Transition
10
Note: 1. C_L = 100pF (see Fig 4).
2. CL = 5pF (see Fig 4).
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Figure 6. Read Mode AC Waveforms.
A0-A12
E
G
DQ0-DQ7
Note: Write Enable (W) = High.
tAVQV
tELQV
tAVAV
VALID
tELQX
tGLQV
tGLQX
tAXQX
tEHQZ
tGHQZ
VALID
AI01385
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