M48T512Y-70PM1 STMicroelectronics, M48T512Y-70PM1 Datasheet - Page 5

• Manufacturer Part Number: M48T512Y-70PM1
• Description: IC TIMEKPR NVRAM 4MBIT 5V 32-DIP
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T512Y-70PM1

• Memory Size: 4M (512K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 32-DIP (600 mil) Module
• Clock Format: BCD
• Clock Ic Type: Timekeeper
• Memory Configuration: 512K X 8
• Supply Voltage Range: 4.5V To 5.5V
• Digital Ic Case Style: DIP
• No. Of Pins: 32
• Operating Temperature Range: 0°C To +70°C
• Rohs Compliant: Yes
• Nvram Features: RTC, Internal Battery, XTAL
• Access Time: 70ns
• Memory Case Style: DIP
• Bus Type: Parallel
• User Ram: 512KB
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 32
• Mounting: Through Hole
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2856-5

M48T512Y, M48T512V
1
Description
The M48T512Y/V TIMEKEEPER
time clock organized as 524,288 words by 8 bits. The special DIP package provides a fully
integrated battery-backed memory and real-time clock solution.
The M48T512Y/V directly replaces industry standard 512 Kb x 8 SRAMs. It also provides
the non-volatility of Flash without any requirement for special WRITE timing or limitations on
the number of WRITEs that can be performed.
Figure 1.
Table 1.
A0-A18
DQ0-DQ7
E
G
W
V
V
CC
SS
Logic diagram
Signal names
A0-A18
W
G
Doc ID 5747 Rev 6
E
®
19
RAM is a 512 Kb x 8 non-volatile static RAM and real-
Address inputs
Data inputs / outputs
Chip enable input
Output enable input
WRITE enable input
Supply voltage
Ground
M48T512Y
M48T512V
V CC
V SS
8
DQ0-DQ7
Description
AI02262
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