DS1225Y-150+ Maxim Integrated Products, DS1225Y-150+ Datasheet - Page 6

• Manufacturer Part Number: DS1225Y-150+
• Description: IC NVSRAM 64KBIT 150NS 28DIP
• Manufacturer: Maxim Integrated Products

Specifications of DS1225Y-150+

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 64K (8K x 8)
• Speed: 150ns
• 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: 8 K x 8
• Interface Type: Parallel
• Access Time: 150 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

POWER-DOWN/POWER-UP CONDITION
SEE NOTE 11
POWER-DOWN/POWER-UP TIMING
WARNING:
Under no circumstance are negative undershoots, of any amplitude, allowed when device is in battery
backup mode.
NOTES:
1. WE is high for a read cycle.
2. OE = V
3. t
4. t
5. These parameters are sampled with a 5 pF load and are not 100% tested.
6. If the CE low transition occurs simultaneously with or later than the WE low transition in Write
7. If the CE high transition occurs prior to or simultaneously with the WE high transition, the output
NOT RECOMMENDED FOR NEW DESIGNS
PARAMETER
V
V
PARAMETER
Expected Data Retention Time
CE at V
CE at V
CC
CC
state.
going low to the earlier of CE or WE going high.
Cycle 1, the output buffers remain in a high-impedance state during this period.
buffers remain in a high-impedance state during this period.
WP
DS
Slew from V
Slew from 0V to V
is measured from the earlier of CE or WE going high.
is specified as the logical AND of CE and WE . t
IH
IH
IH
before Power-Down
after Power-Up
or V
IL
TP
. If OE = V
to 0V
TP
IH
during a write cycle, the output buffers remain in a high impedance
SYMBOL
SYMBOL
t
t
t
REC
t
t
PD
DR
F
R
6 of 8
MIN
MIN
100
10
0
0
WP
is measured from the latter of CE or WE
MAX
MAX
2
UNITS
UNITS
years
ms
µs
µs
µs
(T
A
NOTES
NOTES
= +25°C)
11
9
DS1225Y