5962F-0323602QXC Просмотр технического описания (PDF) - Aeroflex UTMC
Номер в каталоге
Компоненты Описание
производитель
5962F-0323602QXC Datasheet PDF : 16 Pages
| |||
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
VSS
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
1 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52
2
3
4
5
6
Top View
7
8
9
10
11
12
13
14
15
16
17
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
VSS
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
Figure 2. 15ns SRAM Pinout (68)
PIN NAMES
A(16:0) Address
DQ(31:0) Data Input/Output
E1
Enable (Active Low)
E2
Enable (Active High)
HHWE
LWHE
High half-word enable
Low half-word enable
W Write Enable
G Output Enable
VDD1 Power (1.8V)
VDD2 Power (3.3V)
VSS Ground
DEVICE OPERATION
The UT8R128K32 has six control inputs called Enable 1 (E1),
Enable 2 (E2), Write Enable (W), Half-word Enables (HHWE/
LHWE) and Output Enable (G); 17 address inputs, A(16:0); and
32 bidirectional data lines, DQ(15:0). E1 and E2 device enables
control device selection, active, and standby modes. Asserting
E1 and E2 enables the device, causes IDD to rise to its active
value, and decodes the 17 address inputs to select one of 131,072
words in the memory. W controls read and write operations.
During a read cycle, G must be asserted to enable the outputs.
Table 1. Device Operation Truth Table
G W E2 E1 LHWE HHWE I/O Mode
Mode
XX X H
X
XX L X
X
LH H L
L
X
DQ(31:16) Standby
3-State
DQ(15:0)
3-State
X
DQ(31:16) Standby
3-State
DQ(15:0)
3-State
H
DQ(31:16) Low Half-Word
3-State
Read
DQ(15:0)
Data Out
LH H L
H
LH H L
L
XL H L
L
XL H L
L
XL H L
H
HH H L
X
XX H L
H
L
DQ(31:16) High Half-Word
Data Out
Read
DQ(15:0)
3-State
L
DQ(31:16) Word Read
Data Out
DQ(15:0)
Data Out
L
DQ(31:16) Word Write
Data In
DQ(15:0)
Data In
H
DQ(31:16) Low Half-Word
3-State
Write
DQ(15:0)
Data In
L
DQ(31:16) High Half-Word
Data In
Write
DQ(15:0)
3-State
X
DQ(31:16) 3-State
DQ(15:0)
All 3-State
H
DQ(31:16) 3-State
DQ(15:0)
All 3-State
Notes:
1. “X” is defined as a “don’t care” condition.
2. Device active; outputs disabled.
2
Share Link: 