M48T37Y-70MH1E STMicroelectronics, M48T37Y-70MH1E Datasheet - Page 6

• Manufacturer Part Number: M48T37Y-70MH1E
• Description: IC TIMEKPR NVRAM 256KBIT5V 44SOH
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T37Y-70MH1E

• Memory Size: 256K (32K 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: Surface Mount
• Package / Case: 44-SOH
• Bus Type: Parallel
• User Ram: 32KB
• Operating Supply Voltage (typ): 5V
• Package Type: SOH
• 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: 44
• Mounting: Surface Mount
• Memory Configuration: 32K X 8
• Nvram Features: RTC
• Interface Type: Parallel
• Access Time: 70ns
• Supply Voltage Range: 4.5V To 5.5V
• Memory Case Style: SOIC
• No. Of Pins: 44
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2854-5; M48T37Y-70MH1

Description
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Table 1.
Figure 2.
A0-A14
DQ0-DQ7
RST
IRQ/FT
WDI
E
G
W
V
V
NC
CC
SS
Signal names
SOIC connections
Address inputs
Interrupt / frequency test output (open drain)
Data inputs / outputs
Reset output (open drain)
Watchdog input
Chip enable
Output enable
WRITE enable
Supply voltage
Ground
Not connected internally
DQ0
DQ1
DQ2
RST
V SS
WDI
A14
A12
NC
NC
NC
NC
NC
NC
A7
A6
A5
A4
A3
A2
A1
A0
Doc ID 7019 Rev 9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
M48T37Y
M48T37V
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
V CC
NC
NC
NC
IRQ/FT
W
A13
A8
A9
A11
G
NC
NC
A10
E
NC
DQ7
DQ6
DQ5
DQ4
DQ3
NC
M48T37Y, M48T37V
AI02174