1 April 21, 2004
UL62H1616A
LB GA0 A1 A2 n.c.
DQ8 UB A3 A4 EDQ0
DQ9 DQ10 A5 A6 DQ1 DQ2
VSS DQ11 n.c. A7 DQ3 VCC
VCC DQ12 n.c. n.c. DQ4 VSS
DQ14 DQ13 A14 A15 DQ5 DQ6
DQ15 n.c. A12 A13 W DQ7
n.c. A8 A9 A10 A11 n.c.
!65536 x 16 bit static CMOS RAM
!15, 20 and 35 ns Access Time
!Common data inputs and
data outputs
!Three-state outputs
!Standby current < 150 µA
at 125°C
!TTL/CMOS-compatible
!Power supply voltage 3.3 V
!Operating temperature range
K-Type:-40 °C to 85 °C
A-Type:-40 °C to 125 °C
!QS 9000 Quality Standard
!ESD protection > 2000 V
(MIL STD 883C M3015.7)
!Latch-up immunity >100 mA
!Package: TSOP II 44 (400 mil)
The UL62H1616A is a static RAM
manufactured using a CMOS pro-
cess technology with the following
operating modes:
- Lower / Upper Byte Read
- Word Read
- Lower / Upper Byte Write
- Word Write
- Standby
- 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. During the active state
E = L and W = H each address
change leads to a new Read cycle.
In a Read cycle, the data outputs
are activated by the falling edge of
G. If LB = L the data lower byte will
be available at the outputs DQ0-
DQ7, on UB = L the data upper
byte appear at the outputs DQ8-
DQ15. 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, respectively.
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.
Low Voltage Automotive Fast 64K x 16 SRAM
Pin Configuration
Top View
Signal Name Signal Description
A0 - A15 Address Inputs
DQ0 - DQ15 Data In/Out
EChip Enable
GOutput Enable
WWrite Enable
UB Upper Byte Enable
LB Lower Byte Enable
VCC Power Supply Voltage
VSS Ground
n.c. not connected
Pin Description
1
A4
VCC
35
2A3 A6
34
4A1 G
32
5A0 UB
31
3A2 A7
33
6E
A5
30
7DQ0
LB
29
8DQ1
DQ15
28
12VSS
A8
24
9DQ2
DQ9
27
10DQ3
DQ8
26
11VCC
n.c.
25
13DQ4
A9
23
14DQ5
A10
38
TSOPII
15
16
17
18
19
20
22
21
36
37
39
40
41
42
43
44
DQ7
W
A15
A14
A13
A12
n.c.
DQ6
DQ14
DQ13
DQ12
VSS
DQ11
DQ10
n.c.
A11
Features Description
Top View
BGA