M48Z128-70PM1 STMicroelectronics, M48Z128-70PM1 Datasheet - Page 9

• Manufacturer Part Number: M48Z128-70PM1
• Description: IC NVSRAM 1MBIT 70NS 32DIP
• Manufacturer: STMicroelectronics

Specifications of M48Z128-70PM1

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 1M (128K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.75 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-DIP (600 mil) Module
• Data Bus Width: 8 bit
• Organization: 128 Kb x 8
• Interface Type: Parallel
• Access Time: 70 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.75 V
• Operating Current: 105 mA
• Maximum Operating Temperature: 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Memory Configuration: 128K X 8
• Nvram Features: Internal Battery
• Supply Voltage Range: 4.5V To 5.5V
• Memory Case Style: DIP
• No. Of Pins: 32
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2873-5

WRITE Mode
The M48Z128/Y/V is in the WRITE Mode whenev-
er W and E are active. The start of a WRITE is ref-
erenced from the latter occurring falling edge of W
or E. A WRITE is terminated by the earlier rising
edge of W or E.
The addresses must be held valid throughout the
cycle. E or W must return high for minimum of
t
Figure 8. WRITE Enable Controlled, WRITE AC Waveforms
Note: Output Enable (G) = High.
Figure 9. Chip Enable Controlled, WRITE AC Waveforms
Note: Output Enable (G) = High.
EHAX
from E or t
A0-A16
E
W
DQ0-DQ7
A0-A16
E
W
DQ0-DQ7
WHAX
from W prior to the initiation
tAVEL
tAVEL
tAVWL
tAVWL
tWLQZ
tAVWH
tAVEH
tWLWH
tAVAV
VALID
tAVAV
VALID
tELEH
of another READ or WRITE cycle. Data-in must be
valid t
valid for t
kept high during WRITE cycles to avoid bus con-
tention; although, if the output bus has been acti-
vated by a low on E and G, a low on W will disable
the outputs t
tDVEH
DVWH
tDVWH
DATA INPUT
WHDX
M48Z128, M48Z128Y, M48Z128V*
DATA INPUT
tWHDX
prior to the end of WRITE and remain
WLQZ
or t
after W falls.
EHDX
tEHDX
tWHQX
afterward. G should be
tEHAX
tWHAX
AI01198
AI01199
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