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UL62H256A fiches techniques PDF

Zentrum Mikroelektronik Dresden AG - Low Voltage Automotive Fast 32K x 8 SRAM

Numéro de référence UL62H256A
Description Low Voltage Automotive Fast 32K x 8 SRAM
Fabricant Zentrum Mikroelektronik Dresden AG 
Logo Zentrum Mikroelektronik Dresden AG 





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UL62H256A fiche technique
UL62H256A
Low Voltage Automotive Fast 32K x 8 SRAM
Features
Description
! 32768 x 8 bit static CMOS RAM
! 35 and 55 ns Access Time
! Common data inputs and
data outputs
! Three-state outputs
! Typ. operating supply current
35 ns: 45 mA
55 ns: 30 mA
! Standby current < 40 µA at 125 °C
! TTL/CMOS-compatible
! Power supply voltage 2.5 - 3.6 V
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-40 °C to 125 °C
! QS 9000 Quality Standard
! ESD protection > 2000 V
(MIL STD 883C M3015.7)
! Latch-up immunity >100 mA
! Package: SOP28 (300/330 mil)
The UL62H256A is a static RAM
manufactured using a CMOS pro-
cess technology with the following
operating modes:
- Read
- Standby
- Write
- Data Retention
The memory array is based on a
6-Transistor cell.
The circuit is activated by the fal-
ling edge of E. The address and
control inputs open simultaneously.
According to the information of W
and G, the data inputs, or outputs,
are active. In a Read cycle, the
data outputs are activated by the
falling edge of G, afterwards the
data word will be available at the
outputs DQ0-DQ7. After the
address change, the data outputs
go High-Z until the new information
is available. The data outputs have
no preferred state. The Read cycle
is finished by the falling edge of W,
or by the rising edge of E, respec-
tively.
Data retention is guaranteed down
to 2 V. With the exception of E, all
inputs consist of NOR gates, so
that no pull-up/pull-down resistors
are required.
Pin Configuration
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1 28
2 27
3 26
4 25
5 24
6 23
7 22
8 SOP 21
9 20
10 19
11 18
12 17
13 16
14 15
VCC
W
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
Top View
May 07, 2004
Pin Description
Signal Name
A0 - A14
DQ0 - DQ7
E
G
W
VCC
VSS
Signal Description
Address Inputs
Data In/Out
Chip Enable
Output Enable
Write Enable
Power Supply
Voltage
Ground
1

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