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PDF M48Z30 Data sheet ( Hoja de datos )
| Número de pieza | M48Z30 | |
| Descripción | CMOS 32K x 8 ZEROPOWER SRAM | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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M48Z30
M48Z30Y
CMOS 32K x 8 ZEROPOWER SRAM
INTEGRATED LOW POWER SRAM,
POWER-FAIL CONTROL CIRCUIT and
BATTERY
CONVENTIONAL SRAM OPERATION;
UNLIMITED WRITE CYCLES
10 YEARS of DATA RETENTION in the
ABSENCE of POWER
PIN and FUNCTION COMPATIBLE with
JEDEC STANDARD 32K x 8 SRAMs
AUTOMATIC POWER-FAIL CHIP DESELECT
and WRITE PROTECTION
CHOICE of TWO WRITE PROTECT
VOLTAGES:
– M48Z30: 4.5V ≤ VPFD ≤ 4.75V
– M48Z30Y: 4.2V ≤ VPFD ≤ 4.50V
BATTERY INTERNALLY ISOLATED UNTIL
POWER IS APPLIED
28
1
PMDIP28 (PM)
Module
Figure 1. Logic Diagram
DESCRIPTION
The M48Z30/30Y 32K x 8 ZEROPOWER® RAM is
a non-volatile 262,144 bit Static RAM organized as
32,768 words by 8 bits. The device combines an
internal lithium battery and a full CMOS SRAM in a
plastic 28 pin DIP Module. The ZEROPOWER
Table 1. Signal Names
A0 - A14
Address Inputs
DQ0 - DQ7
Data Inputs / Outputs
E Chip Enable
G Output Enable
W Write Enable
VCC Supply Voltage
VSS Ground
July 1994
1/12
1 page  
M48Z30, M48Z30Y
Table 7. Power Down/Up Mode AC Characteristics (TA = 0 to 70°C)
Symbol
Parameter
Min Max Unit
tF (1)
tFB (2)
VPFD (max) to VPFD (min) VCC Fall Time
VPFD (min) to VSO VCC Fall Time
300 µs
10 µs
tWP Write Protect Time from VCC = VPFD
40 150 µs
tR VSO to VPFD (max) VCC Rise Time
0 µs
tER E Recovery Time
40 120 ms
Notes: 1. VPFD (max) to VPFD (min) fall time of less than tF may result in deselection/write protection not occurring until 200 µs after
VCC passes VPFD (min).
2. VPFD (min) to VSO fall time of less than tFB may cause corruption of RAM data.
Figure 5. Power Down/Up Mode AC Waveforms
5/12
5 Page 
Symb
A
A1
B
C
D
E
e1
e3
eA
L
S
N
PMDIP28
M48Z30, M48Z30Y
PMDIP28 - 28 pin Plastic DIP Module
mm inches
Typ Min Max Typ Min
9.27 9.52
0.365
0.38 –
0.015
0.43 0.59
0.017
0.20 0.33
0.008
37.34
38.10
1.470
18.03
18.80
0.710
2.29 2.79
0.090
29.72
36.32
1.170
14.99
16.00
0.590
3.05 3.81
0.120
1.91 2.79
0.075
28 28
Max
0.375
–
0.023
0.013
1.500
0.740
0.110
1.430
0.630
0.150
0.110
S
N
B
e3
D
1
A
A1 L
e1
E
Drawing is not to scale
C
eA
PMDIP
11/12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet M48Z30.PDF ] | |
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