M48Z35Y-70PC1 STMicroelectronics, M48Z35Y-70PC1 Datasheet - Page 5

• Manufacturer Part Number: M48Z35Y-70PC1
• Description: IC NVSRAM 256KBIT 70NS 28DIP
• Manufacturer: STMicroelectronics

Specifications of M48Z35Y-70PC1

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-DIP Module (600 mil), 28-EDIP
• Data Bus Width: 8 bit
• Organization: 32 Kb x 8
• Interface Type: Parallel
• Access Time: 70 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Operating Current: 50 mA
• Maximum Operating Temperature: 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Capacitance, Input: 10 pF
• Capacitance, Output: 10 pF
• Current, Input, Leakage: ±1 μA
• Current, Operating: 50 mA
• Current, Output, Leakage: ±5
• Data Retention: 10 yrs.
• Density: 256K
• Package Type: PCDIP28
• Power Dissipation: 1 W
• Temperature, Operating: 0 to +70 °C
• Time, Access: 70 ns
• Time, Fall: ≤5 ns
• Time, Rise: ≤5 ns
• Voltage, Input, High: 4.8 to 5.8 V
• Voltage, Input, Low: 0.8 V
• Voltage, Output, High: 2.4 V
• Voltage, Output, Low: 0.4 V
• Voltage, Supply: 4.5 to 5.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2885-5

Figure 8.
Table 5.
1. Valid for ambient operating temperature: T
2. V
3. V
Table 6.
1. Valid for ambient operating temperature: T
2. At 25°C, V
Note:
12/23
Symbol
Symbol
V
t
V
t
V
DR
PFD
CC
PFD
t
FB
t
t
t
F
PFD
PD
t
RB
rec
SO
R
(2)
(2)
(3)
passes V
(min) to V
(max) to V
V CC
V PFD (max)
V PFD (min)
V SO
INPUTS
OUTPUTS
CC
Power-fail deselect voltage
Battery back-up switchover voltage
Expected data retention time
For more information on Battery Storage Life refer to the Application Note AN1012.
Power down/up mode AC waveforms
Power down/up AC characteristics
Power down/up trip points DC characteristics
All voltages referenced to V
E or W at V
V
V
V
V
V
= 0V.
PFD
PFD
PFD
PFD
SS
PFD
SS
PFD
to V
(min).
fall time of less than t
(max) to V
(min) to V
(min) to V
(max) to inputs recognized
(min) fall time of less than t
tPD
PFD
(PER CONTROL INPUT)
IH
(min) V
VALID
before power down
RECOGNIZED
SS
PFD
PFD
Parameter
tF
Parameter
V
(max) V
CC
CC
(min) V
fall time
rise time
FB
A
A
may cause corruption of RAM data.
(1)
CC
CC
= 0 to 70°C; V
= 0 to 70°C; V
(1)
SS
rise time
fall time
F
tFB
may result in deselection/write protection not occurring until 200µs after
.
M48Z35/Y
M48Z35Y
M48Z35
CC
CC
= 4.75 to 5.5V or 4.5 to 5.5V (except where noted).
= 4.75 to 5.5V or 4.5 to 5.5V (except where noted).
tDR
DON'T CARE
HIGH-Z
Min
300
Min
4.5
4.2
10
10
40
10
0
1
tRB
4.35
Typ
4.6
3.0
Max
200
tR
(PER CONTROL INPUT)
trec
RECOGNIZED
Max
4.75
VALID
4.5
AI01168C
Unit
ms
µs
µs
µs
µs
µs
YEARS
Unit
V
V
V