M48T37Y-70MH1E STMicroelectronics, M48T37Y-70MH1E Datasheet - Page 22

• 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

DC and AC parameters
Table 11.
1. Valid for ambient operating temperature: T
2. WDI internally pulled down to V
3. Outputs deselected.
Figure 13. Power down/up mode AC waveforms
22/30
Symbol
I
I
I
I
V
LO
V
noted).
I
V
LI
CC1
CC2
V
CC
OH
OL
(2)
IH
IL
(3)
V CC
V PFD (max)
V PFD (min)
V SO
RST
INPUTS
OUTPUTS
Input leakage current
Output leakage current
Supply current
Supply current (standby) TTL
Supply current (standby)
CMOS
Input low voltage
Input high voltage
Output low voltage (standard)
Output low voltage
(open drain)
Output high voltage
DC characteristics
Parameter
VALID
VALID
tF
SS
through a 100 kΩ resistor.
A
tFB
= 0 to 70 °C or –40 to 85 °C; V
0 V ≤ V
Test condition
E = V
0 V ≤ V
Outputs open
I
I
I
OL
OH
OL
Doc ID 7019 Rev 9
E = V
= 2.1 mA
CC
= 10 mA
= –1 mA
OUT
IN
– 0.2 V
≤ V
IH
≤ V
DON'T CARE
tDR
CC
CC
(1)
HIGH-Z
–0.3
Min
2.2
2.4
M48T37Y
CC
–70
tRB
= 4.5 to 5.5 V or 3.0 to 3.6 V (except where
V
CC
Max
0.8
0.4
0.4
±1
±1
50
3
3
+ 0.3
tR
–0.3
Min
2.2
2.4
M48T37V
tREC
M48T37Y, M48T37V
–100
VALID
VALID
V
CC
Max
0.8
0.4
0.4
±1
±1
33
2
2
+ 0.3
AI03078
Unit
mA
mA
mA
µA
µA
V
V
V
V
V