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M48T59 数据表(PDF) 9 Page - STMicroelectronics

部件名 M48T59
功能描述  5.0 or 3.3 V, 64 Kbit (8 Kbit x 8) TIMEKEEPER짰 SRAM
PDF  32 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M48T59 数据表(HTML) 9 Page - STMicroelectronics

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Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
M48T59, M48T59Y, M48T59V
Operation modes
9/32
The state of the eight three-state Data I/O signals is controlled by E and G. If the outputs are
activated before tAVQV, the data lines will be driven to an indeterminate state until tAVQV. If
the Address Inputs are changed while E and G remain active, output data will remain valid
for Output Data Hold time (tAXQX) but will go indeterminate until the next Address Access.
Figure 5.
Read mode AC waveforms
Note:
WRITE enable (W) = High.
Table 3.
Read mode AC characteristics
Symbol
Parameter(1)
1.
Valid for ambient operating temperature: TA = 0 to 70°C; VCC = 4.5 to 5.5 V, 4.75 to 5.5 V, or 3.0 to 3.6 V (except where
noted).
M48T59/Y/V
Unit
–70
Min
Max
tAVAV
READ cycle time
70
ns
tAVQV
(2)
2.
CL = 100pF (see Figure 13 on page 22).
Address valid to output valid
70
ns
tELQV
(2)
Chip enable low to output valid
70
ns
tGLQV
(2)
Output enable low to output valid
35
ns
tELQX
(3)
3.
CL = 5pF (see Figure 13 on page 22).
Chip enable low to output transition
5
ns
tGLQX
(3)
Output enable low to output transition
5
ns
tEHQZ
(3)
Chip enable high to output Hi-Z
25
ns
tGHQZ
(3)
Output enable high to output Hi-Z
25
ns
tAXQX
(2)
Address transition to output transition
10
ns
AI01385
tAVAV
tAVQV
tAXQX
tELQV
tELQX
tEHQZ
tGLQV
tGLQX
tGHQZ
VALID
A0-A12
E
G
DQ0-DQ7
VALID



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