M48T58-70PC1 STMicroelectronics, M48T58-70PC1 Datasheet - Page 13

• Manufacturer Part Number: M48T58-70PC1
• Description: IC TIMEKPR NVRAM 64KBIT 5V 28-DI
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T58-70PC1

• Memory Size: 64K (8K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.75 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 28-DIP Module (600 mil), 28-EDIP
• Function: Clock/Calendar/NV Timekeeping RAM/Battery Backup
• Rtc Memory Size: 8192 Byte
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.75 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Rtc Bus Interface: Parallel
• Clock Format: HH
• Clock Ic Type: Timekeeper
• Memory Configuration: 8K X 8
• Supply Voltage Range: 4.75V To 5.5V
• Digital Ic Case Style: DIP
• No. Of Pins: 28
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2857-5

M48T58, M48T58Y
Table 4.
1. Valid for ambient operating temperature: T
2. C
3. If E1 goes low or E2 high simultaneously with W going low, the outputs remain in the high impedance
t
t
WHQX
WLQZ
Symbol
noted).
state.
t
t
t
t
t
t
t
t
t
t
t
t
t
t
E1LE1H
E2HE2L
t
t
t
t
E1HDX
AVE2H
E1HAX
DVE1H
E2LDX
AVE1H
L
t
AVE1L
WLWH
E2LAX
DVE2L
WHDX
AVE2L
WHAX
DVWH
AVWH
AVWL
AVAV
= 5 pF.
(2)(3)
(2)(3)
WRITE mode AC characteristics
WRITE cycle time
Address valid to WRITE enable low
Address valid to chip enable 1 low
Address valid to chip enable 2 high
WRITE enable pulse width
Chip enable 1 low to chip enable 1 high
Chip enable 2 high to chip enable 2 low
WRITE enable high to address transition
Chip enable 1 high to address transition
Chip enable 2 low to address transition
Input valid to WRITE enable high
Input valid to chip enable 1 high
Input valid to chip enable 2 low
WRITE enable high to input transition
Chip enable 1 high to input transition
Chip enable 2 low to input transition
Write enable low to output Hi-Z
Address valid to WRITE enable high
Address valid to chip enable 1 high
Address valid to chip enable 2 low
WRITE enable high to output transition
Parameter
Doc ID 2412 Rev 7
A
= 0 to 70 °C; V
(1)
CC
= 4.75 to 5.5 V or 4.5 to 5.5 V (except where
Min
70
50
55
55
30
30
30
60
60
60
0
0
0
0
0
0
5
5
5
5
M48T58/Y
Max
25
WRITE mode
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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