M4T28-BR12SH1 STMicroelectronics, M4T28-BR12SH1 Datasheet - Page 9

• Manufacturer Part Number: M4T28-BR12SH1
• Description: IC SNAPHAT BATT/CRYSTAL 28-SOIC
• Manufacturer: STMicroelectronics

Specifications of M4T28-BR12SH1

• Battery Type: Li-(CF)
• Operating Supply Voltage: 0 V to 2.8 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Package / Case: SOIC-28
• Mounting Style: SMD/SMT
• Ic Function: Timekeeper (Battery & Crystal)
• Supply Voltage Range: 2.8V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: SNAPHAT
• No. Of Pins: 28
• Termination Type: SMD
• Rohs Compliant: Yes
• Filter Terminals: SMD
• External Depth: 14.99mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3686-5

M48T35AV
Note:
The state of the eight three-state data I/O signals is controlled by E and G. If the outputs are
activated before t
the Address Inputs are changed while E and G remain active, output data will remain valid
for output data hold time (t
Figure 5.
WRITE enable (W) = High.
Table 3.
1. Valid for ambient operating temperature: T
2. C
Symbol
t
t
t
t
A0-A14
E
G
DQ0-DQ7
GLQX
EHQZ
GHQZ
ELQX
t
t
t
t
t
AVQV
ELQV
GLQV
AXQX
L
AVAV
= 5 pF.
(2)
(2)
(2)
(2)
READ mode AC waveforms
READ mode AC characteristics
READ cycle time
Address valid to output valid
Chip enable low to output valid
Output enable low to output valid
Chip enable low to output transition
Output enable low to output transition
Chip enable high to output Hi-Z
Output enable high to output Hi-Z
Address transition to output transition
AVQV
, the data lines will be driven to an indeterminate state until t
AXQX
Parameter
Doc ID 6845 Rev 8
tAVQV
tELQX
) but will go indeterminate until the next address access.
tGLQX
tELQV
tGLQV
A
(1)
= 0 to 70 °C; V
tAVAV
VALID
CC
= 3.0 to 3.6 V (except where noted).
VALID
Min
100
10
10
5
M48T35AV
–100
tGHQZ
Max
100
100
Operation modes
50
50
40
AVQV
tAXQX
tEHQZ
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
AI00925
. If
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